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1.
Gynecol Surg ; 14(1): 11, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28890674

RESUMEN

BACKGROUND: The demand for uterus-sparing treatments is increasing as more women postpone childbirth to their 30-40s, when fibroids are more symptomatic. With an increasing choice of treatment options and changing care-provider profiles, now is an opportune time to survey current practices and opinions. Using a 25-stem questionnaire, a web-based survey was used to capture the practices and opinions of UK consultant gynecologists on the treatment of symptomatic fibroids, including the types of procedure most frequently used, methods used to reduce blood loss, and awareness and acceptability of treatment options, and to assess the impact of gender and experience of the treating gynecologist. RESULTS: The response rate was 22%. Laparascopic myomectomy is used least frequently, with 80% of the respondents using GnRHa preoperatively to minimize blood loss and correct anemia, while vasopressin is most frequently used to reduce intraoperative blood loss. Female consultants operate significantly less frequently than males. Those with more than 10 years consultant experience are more likely to perform an open myomectomy compared to those with less than 10 years experience. CONCLUSIONS: Compared to a similar survey performed 10 years ago, surgical methods remain to be the most common treatments, but use of less invasive treatments such as UAE has increased. Consultants' attitudes appear to be responding to the patient demand for less radical treatments. However, it is yet to be seen if the changing consultant demographics will keep up with this demand. The low response rate warrants cautious interpretation of the results, but they provide an interesting snapshot of current views and practices.

3.
Microcirculation ; 21(1): 67-73, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-23844560

RESUMEN

OBJECTIVE: Twin infants tend to have LBW and microvascular alterations but do not appear to have an increase in cardiovascular mortality later in life as singleton infants. We hypothesized that twin infants born to normotensive mothers would not have capillary rarefaction at birth. METHODS: We studied 26 dizygotic twin infants and compared them with 115 consecutive singleton infants to normotensive mothers. We used orthogonal polarized spectroscopy to measure basal (i.e., functional) and maximal (i.e., structural) skin capillary density according to a well-standardized protocol. RESULTS: Twin infants have significantly higher BCD (mean difference 4.3 capillaries/mm(2) , 95% CI: 0.4, 8.1, p = 0.03) and have marginally significantly higher MCD (mean difference 3.9 capillaries/mm(2) , 95% CI: -0.6, 8.3, p = 0.086) compared to singleton infants. Birth weight was significantly associated with BCD and MCD (p = 0.003 and 0.006). CONCLUSIONS: Twin infants with low and NBWs tend to have higher functional and structural capillary densities compared to singleton infants. Further longitudinal studies of skin capillary density and of retinal vascular parameters commencing from birth to various stages in early childhood are essential to identify the dynamics and the exact timing, if any, of the remodeling of microcirculation in these individuals.


Asunto(s)
Capilares , Piel/irrigación sanguínea , Gemelos Dicigóticos , Adulto , Femenino , Humanos , Recién Nacido , Masculino
4.
Am J Hypertens ; 26(9): 1162-9, 2013 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-23757401

RESUMEN

BACKGROUND: Preeclampsia is a major cause of maternal and neonatal mortality and morbidity. The incidence of preeclampsia seems to be rising because of increased prevalence of predisposing disorders, such as essential hypertension, diabetes, and obesity, and there is increasing evidence to suggest widespread microcirculatory abnormalities before the onset of preeclampsia. We hypothesized that quantifying capillary rarefaction could be helpful in the clinical prediction of preeclampsia. METHODS: We measured skin capillary density according to a well-validated protocol at 5 consecutive predetermined visits in 322 consecutive white women, of whom 16 subjects developed preeclampsia. RESULTS: We found that structural capillary rarefaction at 20-24 weeks of gestation yielded a sensitivity of 0.87 with a specificity of 0.50 at the cutoff of 2 capillaries/field with the area under the curve of the receiver operating characteristic value of 0.70, whereas capillary rarefaction at 27-32 weeks of gestation yielded a sensitivity of 0.75 and a higher specificity of 0.77 at the cutoff of 8 capillaries/field with area under the curve of the receiver operating characteristic value of 0.82. Combining capillary rarefaction with uterine artery Doppler pulsatility index increased the sensitivity and specificity of the prediction. Multivariable analysis shows that the odds of preeclampsia are increased in women with previous history of preeclampsia or chronic hypertension and in those with increased uterine artery Doppler pulsatility index, but the most powerful and independent predictor of preeclampsia was capillary rarefaction at 27-32 weeks. CONCLUSIONS: Quantifying structural rarefaction of skin capillaries in pregnancy is a potentially useful clinical marker for the prediction of preeclampsia.


Asunto(s)
Biomarcadores , Capilares/patología , Microcirculación , Preeclampsia/diagnóstico , Preeclampsia/fisiopatología , Piel/irrigación sanguínea , Adulto , Femenino , Humanos , Microcirculación/fisiología , Microscopía por Video , Valor Predictivo de las Pruebas , Embarazo , Segundo Trimestre del Embarazo , Tercer Trimestre del Embarazo , Pronóstico , Análisis de la Onda del Pulso , Curva ROC , Sensibilidad y Especificidad , Ultrasonografía , Arteria Uterina/diagnóstico por imagen
5.
Adv Ther ; 29(8): 655-63, 2012 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-22903240

RESUMEN

Fibroids, the most common tumor in women of reproductive age, impact negatively on women's health and quality of life, and have significant cost implications for their management. The current mainstay treatments are surgical (myomectomy and hysterectomy) and more recently radiological (UAE and focused ultrasound surgery). Hysterectomy is curative but precludes future fertility, whereas the impact of the other treatments on reproduction is uncertain. With women in Western societies deferring childbearing to their 30s and 40s, when fibroids are most symptomatic, there is a pressing need for a uterus-sparing medical therapy that is cheap, effective, and enhances reproductive potential. Serendipity and meticulous translational research has shown that progesterone augments fibroid proliferation, raising the possibility that progesterone receptor modulators could inhibit fibroid growth; this research has culminated in the emergence of ulipristal acetate (UA), a first-in-class, oral selective progesterone receptor modulator (SPRM) that has successfully completed phase III clinical trials. It has been licensed in Western Europe for short-term clinical use prior to surgery, and has shown efficacy with a significant reduction in uterine bleeding, fibroid volume, and improved quality of life, without the side effects associated with other medications such as gonadotropin-releasing hormone (GnRH) agonists. As with all new medicines, there are concerns surrounding UA, not least its effect on the endometrium and the long-term impact on general health and reproduction. Research to date has tended to be industry led, and therefore, there is a need for researcher/clinician-led studies to address the wider issues concerning SPRMs. UA may not turn out to be the "Holy Grail" of medical therapy in the treatment of symptomatic uterine fibroids, but it has rightly given cause for a huge optimism. Further laboratory and clinical research into PRMs and related compounds will no doubt lead to more refined medications.


Asunto(s)
Anticonceptivos/administración & dosificación , Leiomioma/tratamiento farmacológico , Norpregnadienos/administración & dosificación , Neoplasias Uterinas/tratamiento farmacológico , Adulto , Factores de Edad , Estudios de Cohortes , Anticonceptivos/efectos adversos , Estudios Transversales , Relación Dosis-Respuesta a Droga , Esquema de Medicación , Femenino , Estudios de Seguimiento , Humanos , Histerectomía/métodos , Leiomioma/diagnóstico , Leiomioma/cirugía , Persona de Mediana Edad , Evaluación de Necesidades , Norpregnadienos/efectos adversos , Calidad de Vida , Medición de Riesgo , Índice de Severidad de la Enfermedad , Resultado del Tratamiento , Reino Unido , Neoplasias Uterinas/diagnóstico , Neoplasias Uterinas/cirugía
6.
Arch Gynecol Obstet ; 286(5): 1165-71, 2012 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-22710951

RESUMEN

PURPOSE: To evaluate the technical success of total fibroid clearance at open myomectomy for massive and/or multiple symptomatic fibroids using MR imaging (MRI) as the imaging modality. METHODS: The study group comprised 27 women [mean age 37.4 ± 6.9 years (range 27-53)] who underwent open myomectomy for the treatment of massive/multiple symptomatic fibroids at our institution between January 2009 and April 2010. Myomectomy was performed with the intention of achieving complete fibroid clearance. Pre- and postmyomectomy MRI was performed to assess changes in uterine volume and fibroid burden. Periprocedural data (including blood loss and complications) and relief of clinical symptoms at follow-up were also recorded. RESULTS: The mean time to MRI and clinical follow-up was 10 months (range 6-15 months). The mean uterine volume premyomectomy was 795 ± 580 cc and postmyomectomy was 123 ± 70 cc (p < 0.001). The mean percentage reduction in uterine volume was 80.3 % (range 43.0-98.1 %). Of the 10/27 (37.0 %) women with residual fibroids at follow-up: 7 patients had fibroids measuring up to 1 cc in volume, 3 patients had fibroids measuring up to 6 cc. Postoperative adnexal seromas were observed in 6/27 (22.2 %) patients. The clinical success rates of myomectomy amongst the 22/27 (81 %) responders were: 73 % for menorrhagia, 64 % for pain, and 36-64 % for mass-related symptoms. CONCLUSIONS: Using MRI, we have confirmed that open myomectomy can achieve total or near-total fibroid clearance in the majority of patients with massive and/or multiple fibroids.


Asunto(s)
Leiomiomatosis/patología , Imagen por Resonancia Magnética , Neoplasias Uterinas/patología , Útero/patología , Dolor Abdominal/etiología , Dolor Abdominal/cirugía , Adulto , Pérdida de Sangre Quirúrgica , Volumen Sanguíneo , Distribución de Chi-Cuadrado , Femenino , Estudios de Seguimiento , Humanos , Leiomiomatosis/complicaciones , Leiomiomatosis/cirugía , Menorragia/etiología , Menorragia/cirugía , Persona de Mediana Edad , Neoplasia Residual , Tamaño de los Órganos , Seroma/diagnóstico , Seroma/etiología , Resultado del Tratamiento , Carga Tumoral , Miomectomía Uterina/efectos adversos , Neoplasias Uterinas/complicaciones , Neoplasias Uterinas/cirugía
7.
Am J Hypertens ; 25(8): 848-53, 2012 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-22573013

RESUMEN

BACKGROUND: Capillary rarefaction is pathognomonic of essential hypertension. We have previously shown significant capillary rarefaction in normotensive adult offspring of hypertensive parents, suggesting a familial predisposition in which capillary rarefaction represents a primary vascular abnormality that antedates the onset of sustained elevation of blood pressure (BP). We have recently reported that low-birth weight (LBW) infants, born at term or preterm, to normotensive mothers do not have capillary rarefaction at birth. We hypothesized that infants born to mothers with hypertensive disorders of pregnancy (HDP) would have significant capillary rarefaction at birth when compared to infants of normotensive mothers. METHODS: We studied 22 infants born to hypertensive mothers and compared them to 40 normal birth weight infants born at term to normotensive mothers. We used orthogonal polarized spectroscopy to measure basal (i.e., functional) and maximal (i.e., structural) skin capillary densities according to a well-validated protocol. RESULTS: We found that term infants born to hypertensive mothers had significantly lower maximal capillary density (MCD) (mean difference of -5.0 capillaries/mm(2); P < 0.05). However, preterm infants with LBW born to hypertensive mothers tended to have higher basal and maximal skin capillary densities compared with term infants. CONCLUSIONS: While the results in term infants are consistent with our belief that capillary rarefaction in essential hypertension is likely to be a primary vascular abnormality, the results in preterm infants may suggest that the intrauterine environment may exert some influences on the remodeling of the microcirculation which may delay the onset of capillary rarefaction in these infants.


Asunto(s)
Capilares/fisiopatología , Hipertensión/fisiopatología , Microcirculación/fisiología , Complicaciones Cardiovasculares del Embarazo/fisiopatología , Piel/irrigación sanguínea , Adulto , Capilares/anomalías , Femenino , Humanos , Recién Nacido de Bajo Peso , Recién Nacido , Recien Nacido Prematuro , Proyectos Piloto , Embarazo , Dedos del Pie/irrigación sanguínea
8.
Obstet Gynecol ; 119(5): 967-74, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-22525907

RESUMEN

OBJECTIVE: To estimate if reduced capillary density (ie, capillary rarefaction) precedes the onset of preeclampsia and if it could play a role in its pathogenesis. Capillary rarefaction is a consistent finding in essential hypertension. METHODS: In this longitudinal cohort study, we recruited 322 consecutive white women, of whom 305 women completed the study. We used intravital video microscopy to measure basal (ie, functional) and maximal (ie, structural) skin capillary densities according to a well-validated protocol and measured plasma angiogenic and antiangiogenic factors. Women were studied at five consecutive predetermined visits. RESULTS: Preeclampsia occurred in 16 women (mean onset at 35.6±4.8 weeks of gestation), 272 women had normal pregnancies, eight had hypertension, and nine pregnancies were complicated by intrauterine growth restriction. In women with a normal pregnancy, significant reduction in maximal capillary density occurred at 27-32 weeks but had resolved by the puerperium. In contrast, in women who later developed preeclampsia, structural rarefaction was greater and occurred earlier at 20-24 weeks of gestation and persisted into the puerperium. We also found that the change in soluble Endoglin from 11-16 weeks of gestation to 27-32 weeks of gestation was significantly correlated with the change in structural capillary density. CONCLUSION: Significant structural capillary rarefaction precedes the onset of preeclampsia and could play a role in its pathogenesis. LEVEL OF EVIDENCE: II.


Asunto(s)
Capilares/fisiopatología , Preeclampsia/fisiopatología , Piel/irrigación sanguínea , Adulto , Antígenos CD/sangre , Biomarcadores/sangre , Endoglina , Femenino , Humanos , Estudios Longitudinales , Microcirculación , Microscopía por Video , Preeclampsia/sangre , Embarazo , Estudios Prospectivos , Receptores de Superficie Celular/sangre
9.
Pregnancy Hypertens ; 2(4): 380-6, 2012 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-26105607

RESUMEN

OBJECTIVE: To conduct a longitudinal study of skin capillary density changes throughout normal pregnancy and correlate them to changes in blood pressure. DESIGN: Prospective, longitudinal cohort study. SETTING: London teaching hospital. STUDY DESIGN: Two hundred and twenty-five Caucasian, Primigravid women with singleton pregnancy, normotensive throughout pregnancy, and with normal pregnancy outcomes. We used intra-vital video microscopy to measure basal (i.e. functional) and maximal (i.e. structural) skin capillary density (CD) according to a well-validated protocol. The subjects were studied at baseline (11-16weeks gestation) and at four consecutive visits (20-24weeks, 27-32weeks, 34-38weeks, and 5-15weeks postpartum). Blood pressure measurements were taken during the same visits. RESULTS: We found that normal pregnancy was associated with progressive capillary rarefaction, with the overall trend in the fall in both functional and structural CD being statistically significant (p<0.001). The fall in CD was a remarkable mirror image to a progressive rise in systolic and diastolic blood pressures, there being a significant correlation between systolic blood pressure and structural CD. Postpartum measurements of both CD and blood pressure were similar to base line levels. CONCLUSIONS: Progressive capillary rarefaction is a normal accompaniment of human pregnancy that may mediate the progressive rise in systolic and diastolic pressures. Both the CD and blood pressure changes are reversible, returning to baseline in the puerperium.

10.
Cardiovasc Intervent Radiol ; 35(3): 530-6, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-21773858

RESUMEN

PURPOSE: This study was designed to compare quality of life (QoL) outcomes after uterine artery embolization (UAE) or myomectomy. METHODS: Women with symptomatic fibroids diagnosed by ultrasound who wished to preserve their uterus were randomized to myomectomy (n=81) or UAE (n=82). Endpoints at 1 year were QoL measured by a validated questionnaire, hospital stay, rates of complications, and need for reintervention. RESULTS: UAE patients had shorter hospitalization (2 vs. 6 days, p<0.001). By 1 year postintervention, significant and equal improvements in QoL scores had occurred in both groups (myomectomy n=59; UAE n=61). There had been two (2.9%) major complications among UAE versus 6 (8%) among myomectomy patients (not significant). By 2 years, among UAE patients (n=57) there were eight (14.0%) reinterventions for inadequate symptom control compared with one (2.7%) among myomectomy patients (n=37). Half of the women who required hysterectomy had concomitant adenomyosis missed by US. CONCLUSIONS: UAE and myomectomy both result in significant and equal improvements in QoL. UAE allows a shorter hospital stay and fewer major complications but with a higher rate of reintervention.


Asunto(s)
Leiomioma/terapia , Calidad de Vida , Embolización de la Arteria Uterina , Neoplasias Uterinas/terapia , Adulto , Femenino , Humanos , Histerectomía , Leiomioma/diagnóstico por imagen , Leiomioma/cirugía , Tiempo de Internación/estadística & datos numéricos , Persona de Mediana Edad , Complicaciones Posoperatorias/epidemiología , Estudios Prospectivos , Retratamiento/estadística & datos numéricos , Factores de Riesgo , Encuestas y Cuestionarios , Ultrasonografía , Neoplasias Uterinas/diagnóstico por imagen , Neoplasias Uterinas/cirugía
11.
Hypertension ; 58(5): 847-51, 2011 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-21968755

RESUMEN

Low birth weight predicts adult essential hypertension and is linked to increased cardiovascular mortality in adult life. A reduction in capillary density (ie, rarefaction) is a hallmark of essential hypertension, and evidence suggests that rarefaction precedes the onset of the rise in blood pressure, because it is found in normotensive individuals at high risk of developing hypertension, suggesting that rarefaction is likely to be a primary structural abnormality. We hypothesized that low birth weight infants would have significant capillary rarefaction at birth. We studied 44 low birth weight infants born to normotensive mothers (33 were born preterm, birth weight: 1823±446 g; and 11 were born at term, birth weight: 2339±177 g) and compared them with 71 infants born at term with normal weight (birth weight: 3333±519 g). We used orthogonal polarized spectroscopy to measure basal (ie, functional) and maximal (ie, structural) skin capillary densities. Low birth weight infants, whether born preterm or at term, had significantly higher functional capillary density (mean difference of 10.5 capillaries per millimeter squared; 95% CI: 6.6-14.4 capillaries per millimeter squared; P<0.0001) and higher structural capillary density (mean difference of 11.1 capillaries per millimeter squared; 95% CI: 7.6-14.5 capillaries per millimeter squared; P<0.0001) when compared with normal weight term infants. We conclude that low birth weight infants born to normotensive mothers do not have capillary rarefaction at birth. These results contradict what might have been predicted from the concept of the intrauterine origins of adult disease and suggest that microcirculatory abnormalities observed in individuals of low birth weight occur in postnatal life rather than during their intrauterine existence.


Asunto(s)
Capilares/fisiopatología , Hipertensión/etiología , Recién Nacido de Bajo Peso , Microcirculación/fisiología , Piel/irrigación sanguínea , Adulto , Factores de Edad , Angioscopía/métodos , Peso al Nacer , Determinación de la Presión Sanguínea , Estudios de Casos y Controles , Intervalos de Confianza , Femenino , Estudios de Seguimiento , Humanos , Hipertensión/fisiopatología , Recién Nacido , Masculino , Análisis Multivariante , Embarazo , Valores de Referencia , Análisis de Regresión , Medición de Riesgo , Nacimiento a Término
12.
Eur J Obstet Gynecol Reprod Biol ; 157(1): 10-3, 2011 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-21507551

RESUMEN

Epidemiological data suggest that diets rich in antioxidants protect against diseases associated with free radical damage, including cancer, cardiovascular disease and diabetes. Early observations also suggested that vitamin supplements with antioxidant properties, like vitamins C and E, could also prevent or ameliorate pre-eclampsia, but most large randomized clinical trials have failed to show any benefit. Vitamin C given orally, even at high doses, does not achieve sustained serum levels that might be required for effective antioxidant activity. This may explain the failure of the numerous clinical trials involving its use in pre-eclampsia, cancers, cardiovascular diseases, etc. Vitamin C supplementation to stave off pre-eclampsia, cancer and other diseases is a 'nutraceutical' industry-driven myth which should be abandoned. We do not dispute a role for oxidative stress in the pathophysiology of pre-eclampsia, nor the possibility of amelioration of the disease by an anti-oxidant given at the right time and in the correct dosage. We simply wish to make a case that the massive and expensive clinical trials of vitamins C and E should cease until further rigorous scientific research is undertaken.


Asunto(s)
Antioxidantes/uso terapéutico , Ácido Ascórbico/uso terapéutico , Suplementos Dietéticos , Salud de la Mujer , Animales , Antioxidantes/administración & dosificación , Ácido Ascórbico/administración & dosificación , Femenino , Radicales Libres/antagonistas & inhibidores , Radicales Libres/metabolismo , Humanos , Estrés Oxidativo/efectos de los fármacos , Embarazo
13.
J Hypertens ; 29(4): 763-8, 2011 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-21178781

RESUMEN

BACKGROUND: Current dogma states that there is a mid-trimester fall in blood pressure (BP) in uncomplicated pregnancy. In the early stages of a longitudinal study of microcirculatory changes in pregnancy, we noted an absence of this mid-trimester fall. METHOD: We prospectively studied this phenomenon in all our subsequent recruits. From a total of 326 women, 255 primigravid white women normotensive at booking and after delivery were studied. Serial BP measurements were taken under controlled conditions through to 38 weeks gestation. BP measurements by midwives were extracted from the case notes of 51 women within this cohort and analysed to validate the results. SBP progressively increased from the first trimester through to 38 weeks gestation. RESULTS: The increase from baseline at 13 weeks was significant when compared with measurements at 22 weeks [mean difference: 2.8 mmHg; 95% (confidence interval) CI 1.9-3.7], 28 weeks (mean difference: 5.0 mmHg; 95% CI 3.5-6.5) and 36 weeks (mean difference: 7.7 mmHg; 95% CI 6.2-9.1). DBP showed a nonsignificant dip at 22 weeks (mean difference: -0.12 mmHg; 95% CI -0.92 to 0.68), a nonsignificant increase at 28 weeks (mean difference: 2.0 mmHg; 95% CI 0.80-3.2) and a significant increase at 36 weeks (mean difference: 6.0; 95% CI 4.6-7.3). In the validation cohort, the SBP (P=0.0001) and DBP showed an increasing trend (P=0.0001). CONCLUSION: BP measured under controlled conditions showed a progressive rise in pregnancy, with no significant mid-trimester drop. The findings were replicated in the routine antenatal clinic measurements.


Asunto(s)
Presión Sanguínea , Embarazo/fisiología , Femenino , Humanos , Estudios Prospectivos , Valores de Referencia
14.
Best Pract Res Clin Obstet Gynaecol ; 23(5): 609-17, 2009 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-19264555

RESUMEN

Although fibroids constitute the most common tumour in women of reproductive age, it is remarkable how very rarely they cause acute complications. However, when they do occur, the acute complications can cause significant morbidity (very occasionally, mortality), profoundly affecting a woman's quality of life. The complications include thrombo-embolism, acute torsion of subserosal pedunculated leiomyomata, acute urinary retention and renal failure, acute pain caused by red degeneration during pregnancy, acute vaginal or intra-peritoneal haemorrhage, mesenteric vein thrombosis and intestinal gangrene. The obstetrician will be most familiar with red degeneration and acute urinary retention, both of which tend to occur in association with pregnancy. It is difficult to quote an incidence rate for these acute complications as they are rare, and most are reported as cases or case series in the literature. The majority (except red degeneration, acute urinary retention and thrombo-embolism) presents as an acute abdomen and requires urgent exploratory surgery. The differential diagnosis would include twisted adnexa, ruptured ectopic pregnancy, haemorrhagic corpus luteum or follicular cyst, whilst that of the pelvic mass would be ovarian or endometrial carcinoma, uterine sarcoma or leiomyoma and, rarely, ovarian fibroma. Deep vein thrombosis is usually due to pelvic venous compression, and while some have advocated that its occurrence in association with a fibroid mass should be an absolute indication for hysterectomy, sophisticated use of radiological adjuncts at surgery, such as 'umbrellas' and haematological support with appropriate anticoagulation, could enable uterine-preserving surgery. The diagnosis of fibroids as a cause of acute urinary retention should be one of exclusion. The treatment of the acute fibroid in pregnancy is of course conservative, definitive treatment being postponed until postpartum.


Asunto(s)
Leiomioma/complicaciones , Neoplasias Uterinas/complicaciones , Enfermedad Aguda , Lesión Renal Aguda/etiología , Femenino , Gangrena/etiología , Hemorragia/etiología , Humanos , Intestino Delgado/patología , Enfermedades Peritoneales/etiología , Embolia Pulmonar/etiología , Anomalía Torsional/etiología , Retención Urinaria/etiología , Hemorragia Uterina/etiología , Trombosis de la Vena/etiología
15.
Best Pract Res Clin Obstet Gynaecol ; 22(4): 655-76, 2008 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-18468953

RESUMEN

The ideal medical therapy for fibroids is, arguably, a tablet that is taken by mouth, once a day or, even better, once a week, with minimal, if any, side-effects, that induces fibroid regression and thus a resolution of symptoms rapidly, but without affecting fertility. Such a magic bullet does not yet exist, and there are no indications that one is on the horizon. Driven by the observation that fibroid growth is hormone dependent, current medical treatments mainly involve hormonal manipulations. Gonadotrophin-releasing hormone analogues (GnRHa) have been the most widely used, and while they do cause fibroid regression, they can only be used in the short term, as temporizing measures in the perimenopausal woman, or pre-operatively to reduce fibroid size, influence the type of surgery, restore haemoglobin levels and apparently reduce blood loss at operation. They are notorious for rebound growth of the fibroids upon cessation of therapy, and have major side-effects. GnRH antagonists avoid the initial flare effect seen with GnRHa therapy, but otherwise do not appear to have any additional advantages over GnRHa. Selective oestrogen receptor modulators, such as raloxifene, have been shown to induce fibroid regression effectively in post-, but not pre-, menopausal women; even in the former group, experience with these drugs is limited, and they are associated with significant side-effects. Aromatase inhibitors only appear to be effective in postmenopausal women, have potentially significant long-term side-effects, and experience with their use is also limited. There are suggestions that the levonorgestrel intra-uterine system can cause dramatic reduction in menstrual flow in women with fibroids, but to date there have been no RCTs of its use in these women, in whom rates of expulsion of the device appear to be high. The progesterone antagonists mifepristone and asoprisnil have shown significant promise and warrant further research, as they appear to show efficacy in inducing fibroid regression without major side-effects. However, they and the other hormonal therapies that alter oestrogen and progesterone production or function significantly (danazol, gestrinone) are not compatible with reproduction. Therefore, the quest for the ideal medical therapy for fibroid disease continues, and increasing understanding of fibroid biology is ushering in non-hormonal therapies, although all are confined to laboratory experimentation at present. In the meantime, surgical and radiological approaches remain the mainstay effective therapies.


Asunto(s)
Antineoplásicos Hormonales/uso terapéutico , Leiomioma/tratamiento farmacológico , Neoplasias Uterinas/tratamiento farmacológico , Quimioterapia Combinada , Femenino , Hormona Liberadora de Gonadotropina/agonistas , Hormona Liberadora de Gonadotropina/antagonistas & inhibidores , Hormona Liberadora de Gonadotropina/uso terapéutico , Antagonistas de Hormonas/uso terapéutico , Humanos , Progesterona/antagonistas & inhibidores
16.
Best Pract Res Clin Obstet Gynaecol ; 22(4): 677-705, 2008 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-18395493

RESUMEN

In addition to the conventional/older treatments of myomectomy and hysterectomy, the options now available to the woman with symptomatic fibroids, especially if she wishes to conserve her uterus, include medical treatments such as mifepristone, minimally invasive therapies such as uterine artery embolization (UAE) or magnetic-resonance-guided focused ultrasound surgery (MRgFUS), and laparoscopic or vaginal myomectomy. It is generally accepted, and with justification, that conventional myomectomy is associated with significant morbidity, especially excessive peri-operative blood loss, recurrence of the fibroids and adhesion formation, which might compromise the very reason, i.e. fertility, which the operation is performed to preserve. However, the newer treatments have significant limitations: medical treatments are promising but, to date, have been found to be of limited efficacy; UAE is still under evaluation and its impact on fertility has yet to be researched; and MRgFUS is an even newer therapy which is limited to centres with high technology and hugely expensive open magnetic resonance imaging facilities. Both UAE and MRgFUS cause shrinkage rather than removal of the fibroids, and have limited efficacy when used with really large, multiple fibroids. Laparoscopic myomectomy is also limited by the size and number of fibroids that can be treated by this approach, and demands laparoscopic skills that are still lacking in most institutions; limitations which also apply to vaginal myomectomy. It is therefore evident that conventional abdominal myomectomy still has a major role to play. There are no limitations on size and number of fibroids, and there are good data showing improvement in outcomes of assisted reproduction treatments following myomectomy. The widespread fallacy is probably the assumption that any gynaecological surgeon can perform a myomectomy; good conventional myomectomy demands no less skill than the laparoscopic approach. There is a need to continue to refine and innovate, especially with regard to reducing blood loss during surgery, reducing the risk of adhesion formation, reducing the risk of recurrence, and reconstruction of uteri to approximate anatomical normality and physiological integrity so that they can carry a pregnancy without complications such as scar rupture. This chapter will review the position of conventional myomectomy and describe approaches to optimizing outcomes following myomectomy.


Asunto(s)
Histerectomía/métodos , Leiomioma/cirugía , Neoplasias Uterinas/cirugía , Femenino , Hemostasis Quirúrgica/métodos , Hemostáticos/uso terapéutico , Humanos , Histerectomía/efectos adversos , Miometrio/cirugía , Embarazo , Resultado del Embarazo , Cuidados Preoperatorios/métodos , Pronóstico , Hemorragia Uterina/prevención & control
17.
J Mol Endocrinol ; 39(3): 189-98, 2007 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-17766644

RESUMEN

Placental neurokinin B appears to be post-translationally modified by phosphocholine (PC) attached to the aspartyl side chain at residue 4 of the mature peptide. Corticotrophin releasing factor (CRF) was found to be expressed by the rat placenta with the main secreted forms being phosphocholinated proCRF+/- one or two polysaccharide moieties. A combination of high-pressure liquid chromatography (HPLC) and two-site immunometric analysis suggested that PC was also attached to the placental precursors of adrenocorticotrophin, hemokinin, activin and follistatin. However, the fully processed forms of rat placental activin and CRF were free of PC. Formerly, the parasitic filarial nematodes have used PC as a post-translational modification, attached via the polysaccharide moiety of certain secretory glycoproteins to attenuate the host immune system allowing parasite survival, but it is the PC group itself which endows the carrier with the biological activity. The fact that treatment of proCRF peptides with phospholipase C but not endoglycosidase destroyed PC immunoreactivity suggested a simpler mode of attachment of PC to placental peptides than that used by nematodes. Thus, it is possible that by analogy the placenta uses its secreted phosphocholinated hormones to modulate the mother's immune system and help protect the placenta from rejection.


Asunto(s)
Hormona Liberadora de Corticotropina/metabolismo , Péptidos/metabolismo , Fosforilcolina/metabolismo , Placenta/metabolismo , Procesamiento Proteico-Postraduccional , Animales , Anticuerpos/metabolismo , Hormona Liberadora de Corticotropina/química , Femenino , Humanos , Neuroquinina B/química , Neuroquinina B/metabolismo , Péptidos/química , Ratas , Ratas Wistar
18.
Am J Obstet Gynecol ; 196(3): 213.e1-5, 2007 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-17346524

RESUMEN

OBJECTIVE: The objective of the study was to quantify markers of myometrial ischemia, necrosis, and inflammation in women undergoing uterine artery embolization (UAE). STUDY DESIGN: Women with symptomatic fibroids were randomized to treatment with UAE (n = 14) or abdominal myomectomy (n = 11). Peripheral venous blood samples were taken before and after the procedure, at 24 hours and 6 weeks. Creatine kinase (CK) and ischemia-modified albumin (IMA) were measured as markers of necrosis and ischemia. Inflammation was assessed by measurement of C-reactive protein (CRP). OUTCOME MEASURES: Changes in the markers following UAE and myomectomy were measured. RESULTS: Following UAE, no change was seen in CK or IMA, but CRP was raised only at 6 weeks. At 24 hours after myomectomy, there were significant rises in all 3 markers, with a return to normal by 6 weeks. CONCLUSION: No significant ischemia or necrosis occurs in the myometrium following UAE, whereas the delayed rise in CRP is likely to reflect necrosis in fibroids.


Asunto(s)
Proteína C-Reactiva/análisis , Creatina Quinasa/sangre , Embolización Terapéutica/efectos adversos , Endometritis/sangre , Endometritis/diagnóstico , Isquemia/sangre , Isquemia/diagnóstico , Leiomioma/terapia , Miometrio/irrigación sanguínea , Miometrio/patología , Albúmina Sérica/análisis , Neoplasias Uterinas/terapia , Biomarcadores/sangre , Endometritis/etiología , Femenino , Humanos , Isquemia/etiología , Leiomioma/sangre , Leiomioma/irrigación sanguínea , Leiomioma/cirugía , Necrosis , Neoplasias Uterinas/sangre , Neoplasias Uterinas/irrigación sanguínea , Neoplasias Uterinas/cirugía
20.
Best Pract Res Clin Obstet Gynaecol ; 19(3): 431-49, 2005 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-15985257

RESUMEN

The range of alternatives to hysterectomy includes 'expanded' oral medical regimens, the levonorgestrel-releasing intrauterine system (LNG-IUS), a wide range of endometrial ablative techniques, and-where fibroids are the primary pathology-myomectomy and uterine artery embolization. Since research has shown that hysterectomy is a highly effective treatment, these alternatives must be assessed against the recognized high satisfaction rates and improved quality of life reported following hysterectomy. Additional issues that would also need to be addressed include complication rates, side-effects, and cost-effectiveness. For women with prolonged abnormal uterine bleeding, recent research suggests that hysterectomy is significantly superior to an expanded medical treatment regimen for health-related quality-of-life measures. Satisfaction with treatment, and health-related quality of life and psychosocial well-being, are reportedly similar between hysterectomy and the LNG-IUS, but the latter has the advantage of reduced cost. Endometrial ablation reduces menstrual blood flow, but its benefits relative to hysterectomy lessen over time. No large-scale studies have adequately compared uterine artery embolization or myomectomy to hysterectomy. Perhaps the most telling finding from recent research with respect to the place of alternative therapies to hysterectomy is that the existence or advent of these alternatives has not reduced hysterectomy rates, but merely increased treatment options and interventions for excessive menstrual loss.


Asunto(s)
Histerectomía , Enfermedades Uterinas/terapia , Antiinflamatorios no Esteroideos/uso terapéutico , Endometrio/cirugía , Femenino , Humanos , Leiomioma/terapia , Levonorgestrel/uso terapéutico , Menorragia/terapia , Miometrio/cirugía , Calidad de Vida
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