RESUMEN
OBJECTIVES: Obesity prevalence has increased over the past 20 years in the general population and among kidney transplant recipients. General surgical belief is that obesity increases surgical difficulty. The aim of this study was to assess the impact of Body Mass Index (BMI) on perioperative complications. METHODS: All kidney transplantations performed in adults in our centre from 2006 to 2011 were analysed. Data on patients' characteristics, surgical protocol, intra and postoperative complications and renal function were collected. Patients were divided into 4 groups as follows: underweight (BMI<18.5kg/m2), normal weight (18.5kg/m2≤BMI<25kg/m2), overweight (25kg/m2≤BMI<30kg/m2) and obese (BMI≥30kg/m2). We also studied the impact of BMI on complications using it as a continuous variable to identify potential threshold values. RESULTS: Among 694 patients included, 52% had normal BMI, 7%, 31% and 9% were underweight, overweight and obese, respectively. In multivariate analysis, overweight was significantly associated with longer operative time compared to normal-weight patients (estimated mean difference of 10,4min, 95% confidence interval (CI) [4.0; 16.9]) and obesity was associated with an increased risk of wound dehiscence (odds ratio 3.1, 95%CI [1.3; 7.3] compared with normal-weight patients). Considering BMI as a continuous variable, the risk of parietal dehiscence significantly increased beyond a BMI of 26kg/m2, intraoperative blood loss and the risk of ureteral stenosis beyond 32kg/m2 and the risk of abdominal wall hematoma beyond a BMI of 34kg/m2. CONCLUSIONS: We found BMI thresholds above which intraoperative blood loss and the risk of parietal dehiscence, ureteral stenosis, and parietal hematoma significantly increased. LEVEL OF EVIDENCE: 3.
Asunto(s)
Trasplante de Riñón , Adulto , Índice de Masa Corporal , Humanos , Trasplante de Riñón/efectos adversos , Obesidad/complicaciones , Obesidad/epidemiología , Sobrepeso/complicaciones , Sobrepeso/epidemiología , Estudios RetrospectivosRESUMEN
Regulatory RNAs, present in many bacterial genomes and particularly in pathogenic bacteria such as Staphylococcus aureus, control the expression of genes encoding virulence factors or metabolic proteins. They are extremely diverse and include noncoding RNAs (sRNA), antisense RNAs, and some 5' or 3' untranslated regions of messenger RNAs that act as sensors for metabolites, tRNAs, or environmental conditions (e.g., temperature, pH). In this review we focus on specific examples of sRNAs of S. aureus that illustrate how numerous sRNAs and associated proteins are embedded in complex networks of regulation. In addition, we discuss the CRISPR-Cas systems defined as an RNA-interference-like mechanism, which also exist in staphylococcal strains.
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ARN Bacteriano/metabolismo , ARN Pequeño no Traducido/metabolismo , Staphylococcus aureus/genética , Animales , Regulación Bacteriana de la Expresión Génica , Genoma Bacteriano , Humanos , ARN Bacteriano/genética , Infecciones Estafilocócicas/microbiología , Staphylococcus aureus/metabolismoRESUMEN
Restricted protein diets in patients with chronic kidney disease have been debated for several decades. In chronic kidney disease as in other chronic diseases, the modulation of the nutritional intake is the object of a certain renewal. It is supported by recent studies that highlight the importance of modulating nutrient intake by diets that are healthier, less rich in animal proteins and richer in plants. The recent reintroduction in France of amino acid supplements and ketoanalogs of amino acids allows the prescription of a very restricted diet. Historical studies have only focused on the relationship between protein intake and renal function degradation. Recent studies on acid loading, bone metabolism or potassium intake allow revisiting the interest of restricted diets. As with any change in eating habits, the selection of patients, information, education and monitoring during the diet are very important and help prevent undernutrition: this is the purpose of this short review.
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Aminoácidos/administración & dosificación , Dieta con Restricción de Proteínas/métodos , Insuficiencia Renal Crónica/dietoterapia , Animales , Suplementos Dietéticos , Conducta Alimentaria , Francia , HumanosRESUMEN
OBJECTIVES: To determine if sound-activated noise meters providing direct audit and visual feedback can reduce sound levels in a level 3 neonatal intensive care unit (NICU). DESIGN/METHODS: Sound levels (in dB) were compared between a 2-month period with noise meters present but without visual signal fluctuation and a subsequent 2â months with the noise meters providing direct audit and visual feedback. RESULTS: There was a significant increase in the percentage of time the sound level in the NICU was below 50â dB across all patient care areas (9.9%, 8.9% and 7.3%). This improvement was not observed in the desk area where there are no admitted patients. There was no change in the percentage of time the NICU was below 45 or 55â dB. CONCLUSIONS: Sound-activated noise meters seem effective in reducing sound levels in patient care areas. Conversations may have moved to non-patient care areas preventing a similar change there.
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Monitoreo del Ambiente/métodos , Unidades de Cuidado Intensivo Neonatal/normas , Ruido/prevención & control , Acústica/instrumentación , Retroalimentación , Ambiente de Instituciones de Salud/normas , Humanos , Recién Nacido , OntarioRESUMEN
AIM: To compare the in vitro biocompatibility of Biodentine™ and White ProRoot(®) mineral trioxide aggregate (MTA(®) ) with MG63 osteoblast-like cells and to characterize the cement surface. METHODOLOGY: A direct contact model for MG63 osteoblast-like cells with cements was used for 1, 3 and 5 days. Four end-points were investigated: (i) cement surface characterization by atomic force microscopy (AFM), (ii) cell viability by MTT assay, (iii) protein amount quantification by Bradford assay and (iv) cell morphology by SEM. Statistical analyses were performed by analysis of variance (anova) with a repetition test method. RESULTS: The roughness of the cements was comparable as revealed by AFM analysis. The MTT test for Biodentine™ was similar to that of MTA(®) . Biodentine™ and MTA(®) induced a similar but slight decrease in metabolic activity. The amount of total protein was significantly enhanced at day three (P < 0.05) but slightly decreased at day five for both tested samples. Biodentine™ was tolerated as well as MTA(®) in all cytotoxicity assays. SEM observations showed improvement of cell attachment and proliferation on both material surfaces following the three incubation periods. CONCLUSION: The biocompatibility of Biodentine™ to bone cells was comparable to MTA(®) .
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Compuestos de Aluminio , Materiales Biocompatibles , Compuestos de Calcio , Cementos Dentales , Dentina , Osteoblastos/citología , Óxidos , Silicatos , Línea Celular , Combinación de Medicamentos , Humanos , Técnicas In Vitro , Microscopía de Fuerza Atómica , Microscopía Electrónica de Rastreo , Proteínas/análisis , Propiedades de SuperficieRESUMEN
OBJECTIVES: To determine whether implementation of a noise reduction policy followed by the addition of direct audit and feedback reduces noise levels in a tertiary-level neonatal intensive care unit (NICU). STUDY DESIGN: Noise level data was collected in three phases: (1) baseline (preintervention), (2) immediately postimplementation of our noise reduction policy, (3) postunveiling of direct audit and feedback mechanism. SETTING: A level 3 NICU in Ontario, Canada. INTERVENTIONS: Noise reduction policy and a direct audit and feedback mechanism. MAIN OUTCOME MEASURES: Average noise level. RESULTS: The baseline level of noise in our unit consistently exceeds guidelines with an average baseline noise of 49 dB (±1.4). Our intervention resulted in a significant reduction in noise levels for one of the four areas in our NICU [-1.06 dB (-1.52, -0.6)], with a trend towards reduction in a second area (-0.21 dB (-0.6, 0.18)). Unexpectedly, two other areas experienced a significant increase in noise (2.05 dB (1.18, 2.94); 0.85 dB (0.11, 1.59)). CONCLUSIONS: The baseline noise in the NICU consistently exceeds guidelines, but reductions in noise levels are achievable. Nonetheless, more work is needed to find the optimal NICU design and noise reduction strategy.
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Auditoría Clínica/métodos , Guías como Asunto/normas , Recién Nacido/fisiología , Unidades de Cuidado Intensivo Neonatal/organización & administración , Ruido/efectos adversos , Canadá , Humanos , Ruido/prevención & control , Evaluación de Programas y Proyectos de Salud , Espectrografía del Sonido , Centros de Atención TerciariaRESUMEN
Hepatitis E virus (HEV) has been identified as a cause of chronic viral hepatitis in immunocompromised patients. Some glomerular diseases were found to be associated with this infection. We report the first case, to our knowledge, of a kidney transplant recipient who developed an HEV infection and de novo membranous nephropathy (MN) concomitantly. The patient displayed a hepatic cytolysis first and a nephrotic syndrome occurred 3 months later. HEV infection was diagnosed upon positive polymerase chain reaction on plasma and stool samples, and renal allograft biopsy revealed de novo MN. Typical causes of MN were definitively excluded. A 3-month course of ribavirin monotherapy allowed the patient to mount a sustained viral response that was rapidly followed by complete remission of the nephrotic syndrome. The chronology of the onset and remission of both diseases is highly suggestive of a causal relationship between hepatitis E and MN.
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Glomerulonefritis Membranosa/virología , Hepatitis E/complicaciones , Trasplante de Riñón , Hepatitis E/tratamiento farmacológico , Humanos , Masculino , Persona de Mediana EdadRESUMEN
International consensus guidelines on the management of cytomegalovirus (CMV) infections in kidney transplantation recommend the use of universal prophylaxis over preemptive therapy for the highest risk kidney transplant recipients (KTR), namely donor+/recipient - CMV serostatus. However, no universal recommendations have been made for R+ KTR undergoing antithymocyte globulin (ATG) induction. In this retrospective study, we compared 1-year outcomes among 24 R+ KTR who received 3 months of valgancyclovir prophylaxis with 72 R+ KTR who were subjected to a preemptive strategy. All subjects received ATG induction. The incidence of CMV infection was significantly higher among the preemptive subjects versus the prophylaxis group (78% versus 38%, respectively; P = .0003), whereas the incidence of CMV disease was low and did not differ significantly between the cohorts (8% versus 7% respectively, P = .8). Late-onset CMV infections were only observed in the prophylaxis group (25% versus 0%, P = .0001). Finally, the rate of opportunistic infections, acute rejection episodes, and graft/patient survivals at 1 year were also similar between the two groups. In light of this study, preemptive therapy and universal prophylaxis were almost equally effective to prevent CMV infection among R+ KTR receiving ATG induction.
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Suero Antilinfocítico/efectos adversos , Antivirales/administración & dosificación , Infecciones por Citomegalovirus/prevención & control , Ganciclovir/análogos & derivados , Inmunosupresores/efectos adversos , Trasplante de Riñón/inmunología , Enfermedad Aguda , Anciano , Anciano de 80 o más Años , Distribución de Chi-Cuadrado , Infecciones por Citomegalovirus/diagnóstico , Infecciones por Citomegalovirus/inmunología , Infecciones por Citomegalovirus/mortalidad , Esquema de Medicación , Femenino , Francia/epidemiología , Ganciclovir/administración & dosificación , Rechazo de Injerto/epidemiología , Rechazo de Injerto/inmunología , Supervivencia de Injerto , Humanos , Incidencia , Trasplante de Riñón/efectos adversos , Trasplante de Riñón/mortalidad , Masculino , Persona de Mediana Edad , Infecciones Oportunistas/epidemiología , Infecciones Oportunistas/inmunología , Estudios Retrospectivos , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento , ValganciclovirRESUMEN
Anti-cytomegalovirus (CMV) prophylaxis is recommended in D+R- kidney transplant recipients (KTR), but is associated with a theoretical increased risk of developing anti-CMV drug resistance. This hypothesis was retested in this study by comparing 32 D+R- KTR who received 3 months prophylaxis (valganciclovir) with 80 D+R- KTR who received preemptive treatment. The incidence of CMV infections was higher in the preemptive group than in the prophylactic group (60% vs. 34%, respectively; p = 0.02). Treatment failure (i.e. a positive DNAemia 8 weeks after the initiation of anti-CMV treatment) was more frequent in the preemptive group (31% vs. 3% in the prophylactic group; p = 0.001). Similarly, anti-CMV drug resistance (UL97 or UL54 mutations) was also more frequent in the preemptive group (16% vs. 3% in the prophylactic group; p = 0.05). Antiviral treatment failures were associated with anti-CMV drug resistance (p = 0.0001). Patients with a CMV load over 5.25 log(10) copies/mL displayed the highest risk of developing anti-CMV drug resistance (OR = 16.91, p = 0.0008). Finally, the 1-year estimated glomerular filtration rate was reduced in patients with anti-CMV drug resistance (p = 0.02). In summary, preemptive therapy in D+R- KTR with high CMV loads and antiviral treatment failure was associated with a high incidence of anti-CMV drug resistance.
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Citomegalovirus/efectos de los fármacos , Farmacorresistencia Viral , Trasplante de Riñón , Humanos , IncidenciaRESUMEN
Virus-induced genes were identified using suppression subtractive hybridisation (SSH) from Pacific cupped oyster, Crassostrea gigas, haemocytes challenged by OsHV-1. A total of 304 clones from SSH forward library were sequenced. Among these sequences, some homologues corresponded to (i) immune related genes (macrophage express protein, IK cytokine, interferon-induced protein 44 or multicopper oxidase), (ii) apoptosis related genes (Bcl-2) and (iii) cell signalling and virus receptor genes (glypican). Molecular characterization and phylogenic analysis of 3 immune-related genes (macrophage expressed protein, multicopper oxidase and immunoglobulin domain cell adhesion molecule) were performed. Finally, quantitative PCR revealed significant changes in the expression of immune related genes (multicopper oxidase, macrophage expressed protein, myeloid differentiation factor 88 and interferon-induced protein 44) in oysters experimentally challenged with OsHV-1. These findings provide a first basis for studying the role of innate immunity in response to viruses in bivalves and identified genes may serve as markers of interest in breeding programs in order to obtain selected oysters presenting OsHV-1 resistance.
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Crassostrea/genética , Infecciones por Herpesviridae/inmunología , Herpesviridae/inmunología , Animales , Apoptosis/genética , Crassostrea/inmunología , Crassostrea/virología , Citocinas/genética , Citocinas/metabolismo , Perfilación de la Expresión Génica , Glipicanos/genética , Glipicanos/metabolismo , Herpesviridae/patogenicidad , Inmunidad Innata/genética , Filogenia , Proteínas Proto-Oncogénicas c-bcl-2/genética , Proteínas Proto-Oncogénicas c-bcl-2/metabolismo , Transducción de Señal/genéticaRESUMEN
Left visual neglect is a dramatic neurological condition that impairs awareness of left-sided events. Neglect has been classically reported after strokes in the territory of the right middle cerebral artery. However, the precise lesional correlates of neglect within this territory remain discussed. Recent evidence strongly suggests an implication of dysfunction of large-scale perisylvian networks in chronic neglect, but the quantitative relationships between neglect signs and damage to white matter (WM) tracts have never been explored. In this prospective study, we used diffusion tensor imaging (DTI) tractography in twelve patients with a vascular stroke in the right hemisphere. Six of these patients showed signs of neglect. Nonparametric voxel-based comparisons between neglect and controls on fractional anisotropy maps revealed clusters in the perisylvian WM and in the external capsule. Individual DTI tractography identified specific disconnections of the fronto-parietal and fronto-occipital pathways in the neglect group. Voxel-based correlation statistics highlighted correlations between patients' performance on two visual search tasks and damage to WM clusters. These clusters were located in the anterior limb of the internal capsule and in the WM underlying the inferior frontal gyrus, along the trajectory of the anterior segment of the arcuate fasciculus (asAF). These results indicate that chronic visual neglect can result from, and correlate with, damage to fronto-parietal connections in the right hemisphere, within large-scale cortical networks important for orienting of spatial attention, arousal and spatial working memory.
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Encéfalo/patología , Trastornos de la Percepción/patología , Accidente Cerebrovascular/patología , Adulto , Anciano , Anciano de 80 o más Años , Anisotropía , Imagen de Difusión Tensora , Femenino , Lateralidad Funcional/fisiología , Humanos , Procesamiento de Imagen Asistido por Computador , Masculino , Persona de Mediana Edad , Red Nerviosa/patología , Pruebas Neuropsicológicas , Trastornos de la Percepción/psicología , Estudios Prospectivos , Desempeño Psicomotor/fisiología , Tractos Piramidales/patología , Factores Socioeconómicos , Accidente Cerebrovascular/psicología , Campos VisualesRESUMEN
BACKGROUND: The goal of this study was to establish preliminary criterion-referenced cut points for adult pedometer-determined physical activity (PA) related to weight status defined by body mass index (BMI). METHODS: Researchers contributed directly measured BMI and pedometer data that had been collected (1) using a Yamax-manufactured pedometer, (2) for a minimum of 3 days, (3) on ostensibly healthy adults. The contrasting groups method was used to identify age- and gender-specific cut points for steps/d related to BMI cut points for normal weight and overweight/obesity (defined as BMI <25 and >or=25 kg/m2, respectively). RESULTS: Data included 3127 individuals age 18 to 94 years (976 men, age = 46.8 +/- 15.4 years, BMI = 27.3 +/- 4.9; 2151 women, age = 47.4 +/- 14.9 years, BMI = 27.6 +/- 6.4; all gender differences NS). Best estimated cut points for normal versus overweight/obesity ranged from 11,000 to 12,000 steps/d for men and 8000 to 12,000 steps/d for women (consistently higher for younger age groups). CONCLUSIONS: These steps/d cut points can be used to identify individuals at risk, or the proportion of adults achieving or falling short of set cut points can be reported and compared between populations. Cut points can also be used to set intervention goals, and they can be referred to when evaluating program impact, as well as environmental and policy changes.
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Índice de Masa Corporal , Recolección de Datos/métodos , Caminata , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Peso Corporal , Femenino , Humanos , Masculino , Persona de Mediana Edad , Monitoreo Ambulatorio/métodos , Estándares de ReferenciaRESUMEN
This is the case of the replantation of the upper limb of a sixty year old woman. The nature of the traumatism is an avulsion of the upper limb, at the junction of the middle third and the lower third of the humerus, which has a very bad prognosis. The originality of this report is the administration of Tacrolimus (immunosuppressive molecule) in an autotransplant. Tracolimus stimulates the nerve growing back, as already demonstrated in the animal and the fetus. In this preliminary report, the use of Tacrolimus over one year showed exceptional results. Indeed, the autors noticed clinical signs of intrinsic reinervation of the hand in the territory of the ulnar and median nerve. This has been confirmed with the use of electromyography. This is, as far as we know, the first observation of such results with adults and when the level of amputation is located so high. The authors think that the use of Tacrolimus should be tested in numerous cases of nerve lesions with bad prognosis such as high ulnar nerve lesions, serious plexus suffering or even in spinal cord trauma.
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Traumatismos del Brazo/cirugía , Inmunosupresores/uso terapéutico , Reimplantación/métodos , Tacrolimus/uso terapéutico , Administración Oral , Electromiografía , Femenino , Humanos , Persona de Mediana Edad , Pronóstico , Trasplante Autólogo , Resultado del Tratamiento , Nervio Cubital/lesionesRESUMEN
Genetic control of the different attributes involved in peach quality has been investigated in an advanced backcross population derived from a cross between Prunus davidiana clone P1908, a wild parent with poor agronomic performance, and a commercial variety, Summergrand. A total of 24 physical and biochemical traits were investigated. Quantitative trait loci (QTLs) were detected for all the traits studied. We identified alleles from P. davidiana with agronomically favorable effects regarding fruit and stone sizes, sugar and acid concentrations and red flesh coloration, in clear contrast to its phenotype. We identified three main regions of the genome where alleles from P. davidiana had negative effects on multiple traits. In other regions, co-locations of QTLs with opposite effects on quality traits were also detected. We discuss the nature of these co-locations in the light of the probable physiological mechanisms involved. Strategies to cope with negative correlations between favorable traits and co-locations of P. davidiana alleles with negative effects on quality traits and positive effects regarding resistance to powdery mildew are discussed from a breeding point of view.
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Frutas/química , Hibridación Genética , Prunus/genética , Sitios de Carácter Cuantitativo , Agricultura/métodos , Carbohidratos/análisis , Mapeo Cromosómico , Frutas/fisiología , Genotipo , Repeticiones de Minisatélite/genética , Polimorfismo de Longitud del Fragmento de RestricciónRESUMEN
Retroviral integrase (IN) is the viral enzyme responsible for the integration of viral DNA into host cellular DNA. In vitro, recombinant IN protein is able to catalyze the 3'-processing, strand transfer and disintegration activities. In order to analyze the importance of specific residues of ALSV (Avian leukemia and sarcoma viruses) IN protein, we introduced 31 amino acid substitutions either in residues previously shown by others to be involved in IN oligomerization or in selected conserved and non-conserved residues through the IN sequence. We tested, in vitro, the three catalytic activities of these mutants as well as their capacity to bind DNA. We found that (i) 88% of the substitutions occurring on well-conserved residues have an effect on IN activities (ii) two mutants (S85T in the central catalytic domain and N197C in the C-terminal domain) present a reduced efficiency of DNA binding compared to the wild type protein. Moreover, all mutations made on the dimer interface of C-terminal domain present reduced activities, suggesting an important role of this part of the protein. Finally, for some mutations, we observed differences between the ALSV and HIV (Human immunodeficiency virus) IN corresponding residues.
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Alpharetrovirus/enzimología , Integrasas/química , Secuencia de Aminoácidos , Secuencia Conservada , ADN/metabolismo , Integrasa de VIH/química , Integrasas/fisiología , Datos de Secuencia Molecular , Mutación , Solubilidad , Relación Estructura-ActividadRESUMEN
The aim of this study was to determine the long-term changes in spine and trunk alignment in patients who have undergone scoliosis surgery. Twenty-three (16F; 7M; at age of surgery 15.7 +/- 4.9 years) patients with adolescent idiopathic scoliosis agreed to participate and had posterior-anterior radiographs and surface topography prior to derotation surgery, within 6 months of surgery, at 2 years post-operatively and 5-10 years (mean follow-up period 6.11 +/- 1.6 years) after surgery. Cobb angles, surface trunk rotations, and cosmetic scores were measured at each visit. A questionnaire assessed back appearance and pain at the 5-10 year follow-up. The results of the questionnaire were compared to 25 patients with idiopathic scoliosis who had recently undergone surgery. A paired two-tailed Student's t-test with p=0.05 was used to compare the deformity between visits. The Cobb angle and cosmetic score improved after surgery while the change in trunk rotation was insignificant (p=0.37). Between the two-year and 5-10 year review, the Cobb angle, cosmetic score, and surface trunk rotation significantly increased. Self-perception of appearance and pain were similar to the control group. Surgical correction of scoliosis is not completely maintained during adulthood although the radiographic and surface deterioration does not appear to be clinically significant.
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Complicaciones Posoperatorias/diagnóstico , Escoliosis/cirugía , Fusión Vertebral , Adolescente , Adulto , Niño , Progresión de la Enfermedad , Femenino , Estudios de Seguimiento , Humanos , Vértebras Lumbares/cirugía , Masculino , Evaluación de Resultado en la Atención de Salud , Vértebras Torácicas/cirugíaRESUMEN
The goal of this pilot study was to explore the relationship between pelvic obliquity and patient pain, sitting tolerance, pressure sores, and function. Five neuromuscular patients who underwent spinal surgery 6-26 weeks prior to assessment took part in this on-going study (4F; 1M); age at surgery (14.6 +/- 2.6 years). Pelvic obliquity was measured from pre- and post-operative anterior-posterior radiographs. A force-sensing pad with a grid of sensors was placed on a flat surface and the weight distribution pattern was recorded. The pressures were divided into left and right sides and peak levels were noted on each side. The parents or caregivers completed a questionnaire on their child's pain, sitting tolerance, pressure sores, and functional abilities. Pelvic obliquity was reduced after surgery by approximately 50% depending on the method used to assess pelvic obliquity. The major curve was reduced from 64 degrees(10 degrees) to 39 degrees (10 degrees). Post operatively, the average pressure (left/right side) ranged from 1.2 to 2.0 (average 1.6). The peak pressure ratio ranged from 1.1 to 1.9 (average 1.4). The ratio of left/right pressure correlated with improvement in pelvic obliquity (r2=0.9). Pain was moderate/severe in the 2 patients with the least correction as measured with the Cobb angle from surgery; both improved following surgery. Two patients suffered pressure sores pre-operatively and one post-operatively. Only 3/5 felt sitting endurance had increased. All parents felt their child sat straighter after surgery. The outcome measures of pain, pressure sores, sitting tolerance, and function were not well related to the amount of pelvic obliquity. More candidates and a longer follow-up may shed light on the many relationships.