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1.
AJR Am J Roentgenol ; 218(1): 152-161, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34286594

RESUMO

BACKGROUND. MRI is the reference standard for neonatal brain imaging, but it is expensive, time-consuming, potentially limited by availability and accessibility, and contraindicated in some patients. Transfontanelle neonatal head ultrasound is an excellent alternative but may be less sensitive and specific than MRI. Contrast-enhanced ultrasound (CEUS) has the potential to improve the capabilities of ultrasound. OBJECTIVE. The purpose of this study is to prospectively evaluate the feasibility, safety, and diagnostic performance of transfontanelle neonatal brain CEUS, with MRI used as the reference standard. METHODS. Neonates in the institutional neonatal ICU who were undergoing MRI as part of their clinical care were prospectively recruited to undergo portable brain ultrasound and CEUS for research purposes. Brain ultrasound and CEUS were performed portably without moving the patient from the isolette or crib in the neonatal ICU. Adverse events were recorded. Two radiologists independently evaluated ultrasound and CEUS images for abnormalities and then reached consensus regarding discrepancies. A separate radiologist reviewed MRI examinations. Sensitivity, specificity, and interreader agreement were evaluated, with MRI used as the reference. Qualitative post hoc image review was performed. RESULTS. Twenty-six neonates (nine boys and 17 girls; mean [± SD] age, 15.2 ± 14.0 days) were included. No significant alteration in patient vital signs or adverse reaction to the ultrasound contrast agent (UCA) occurred. The mean duration of the examination was significantly shorter for combined ultrasound and CEUS than for MRI (21.1 ± 4.7 vs 74.2 ± 34.8 minutes; p < .001). Interrater agreement for any abnormality was almost perfect for both ultrasound and CEUS (κ = 0.92 and 0.85, respectively). Sensitivity for any abnormality was 86.7% for ultrasound and 93.3% for CEUS; specificity was 100.0% for both. CEUS had sensitivity of 87.5% for acute or subacute ischemia and 100.0% for chronic ischemia; its specificity was 100.0% for acute or subacute ischemia and chronic ischemia. For both ultrasound and CEUS, sensitivity for subdural and intraparenchymal hemorrhage was poor (22.2-50.0%). On CEUS but not on MRI, post hoc review showed a case of postischemic hyperperfusion, which was confirmed by subsequently performed contrast-enhanced CT. CONCLUSION. The use of portable brain CEUS in neonates is feasible, safe, and more rapid than MRI. CLINICAL IMPACT. The potential diagnostic utility of brain neonatal CEUS relative to conventional ultrasound, particularly for ischemia, warrants further investigation.


Assuntos
Lesões Encefálicas/diagnóstico por imagem , Encéfalo/diagnóstico por imagem , Meios de Contraste/administração & dosagem , Aumento da Imagem/métodos , Imageamento por Ressonância Magnética/métodos , Ultrassonografia/métodos , Meios de Contraste/efeitos adversos , Estudos de Viabilidade , Feminino , Humanos , Recém-Nascido , Masculino , Estudos Prospectivos , Padrões de Referência , Ultrassonografia/efeitos adversos
2.
J Pediatr ; 237: 190-196, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34144032

RESUMO

OBJECTIVE: To examine the frequency of placental abnormalities in a multicenter cohort of newborn infants with hypoxic-ischemic encephalopathy (HIE) and to determine the association between acuity of placental abnormalities and clinical characteristics of HIE. STUDY DESIGN: Infants born at ≥36 weeks of gestation (n = 500) with moderate or severe HIE were enrolled in the High-dose Erythropoietin for Asphyxia and Encephalopathy Trial. A placental pathologist blinded to clinical information reviewed clinical pathology reports to determine the presence of acute and chronic placental abnormalities using a standard classification system. RESULTS: Complete placental pathologic examination was available for 321 of 500 (64%) trial participants. Placental abnormalities were identified in 273 of 321 (85%) and were more common in infants ≥40 weeks of gestation (93% vs 81%, P = .01). A combination of acute and chronic placental abnormalities (43%) was more common than either acute (20%) or chronic (21%) abnormalities alone. Acute abnormalities included meconium staining of the placenta (41%) and histologic chorioamnionitis (39%). Chronic abnormalities included maternal vascular malperfusion (25%), villitis of unknown etiology (8%), and fetal vascular malperfusion (6%). Infants with chronic placental abnormalities exhibited a greater mean base deficit at birth (-15.9 vs -14.3, P = .049) than those without such abnormalities. Patients with HIE and acute placental lesions had older mean gestational ages (39.1 vs 38.0, P < .001) and greater rates of clinically diagnosed chorioamnionitis (25% vs 2%, P < .001) than those without acute abnormalities. CONCLUSIONS: Combined acute and chronic placental abnormalities were common in this cohort of infants with HIE, underscoring the complex causal pathways of HIE. TRIAL REGISTRATION: ClinicalTrials.gov: NCT02811263.


Assuntos
Hipóxia-Isquemia Encefálica/patologia , Doenças Placentárias/diagnóstico , Doenças Placentárias/epidemiologia , Doença Aguda , Doença Crônica , Estudos de Coortes , Método Duplo-Cego , Eritropoetina/uso terapêutico , Feminino , Idade Gestacional , Humanos , Hipotermia Induzida , Hipóxia-Isquemia Encefálica/terapia , Recém-Nascido , Masculino , Gravidez , Fatores de Risco
3.
J Pediatr ; 163(2): 406-11, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23472765

RESUMO

OBJECTIVE: To test the hypothesis that infants who are just being introduced to enteral feedings will advance to full enteral nutrition at a faster rate if they receive "trophic" (15 mL/kg/d) enteral feedings while receiving indomethacin or ibuprofen treatment for patent ductus arteriosus. STUDY DESIGN: Infants were eligible for the study if they were 23(1/7)-30(6/7) weeks' gestation, weighed 401-1250 g at birth, received maximum enteral volumes ≤60 mL/kg/d, and were about to be treated with indomethacin or ibuprofen. A standardized "feeding advance regimen" and guidelines for managing feeding intolerance were followed at each site (N = 13). RESULTS: Infants (N = 177, 26.3 ± 1.9 weeks' mean ± SD gestation) were randomized at 6.5 ± 3.9 days to receive "trophic" feeds ("feeding" group, n = 81: indomethacin 80%, ibuprofen 20%) or no feeds ("fasting [nil per os]" group, n = 96: indomethacin 75%, ibuprofen 25%) during the drug administration period. Maximum daily enteral volumes before study entry were 14 ± 15 mL/kg/d. After drug treatment, infants randomized to the "feeding" arm required fewer days to reach the study's feeding volume end point (120 mL/kg/d). Although the enteral feeding end point was reached at an earlier postnatal age, the age at which central venous lines were removed did not differ between the 2 groups. There were no differences between the 2 groups in the incidence of infection, necrotizing enterocolitis, spontaneous intestinal perforation, or other neonatal morbidities. CONCLUSION: Infants required less time to reach the feeding volume end point if they were given "trophic" enteral feedings when they received indomethacin or ibuprofen treatments.


Assuntos
Permeabilidade do Canal Arterial/terapia , Nutrição Enteral , Ibuprofeno/uso terapêutico , Indometacina/uso terapêutico , Terapia Combinada , Permeabilidade do Canal Arterial/tratamento farmacológico , Feminino , Humanos , Recém-Nascido , Masculino , Estudos Prospectivos , Fatores de Tempo
4.
West Indian med. j ; West Indian med. j;50(Suppl 7): 43-4, Dec. 2001.
Artigo em Inglês | MedCarib | ID: med-22

RESUMO

The objective of this study was to evaluate the efficacy of Harrington Rod Fusion with Process Wiring on scoliosis. A retrospective review of records and radiographs of twenty-one scoliosis patients, all citizens of Trinidad and Tobago, with single curve, idiopathic scoliosis was conducted. They received treatment with Harrington Rod Fusion with Spinous Process Wiring at the Princess Elizabeth Centre. Radiographs were used to determine the correction percentages at post-op and at follow-up between two and three years later. Of the twenty-one surgical cases, seventeen (81 percent) were female and four (19 percent) male. The mean post-op correction percentage was 46.3 percent, compared with a mean follow-up percentage of 28.6 percent, showing a significant decrease between post-op and follow-up. A majority of patients (90.5 percent) had a reduction in curve magnitude after surgery, whereas 85.7 percent showed reduction at follow-up. The average duration of surgery was 140 minutes with a mean blood loss of 831ml. There was no significant difference in correction percentage between thoracic and thoracolumbar curves. This procedure is an effective surgical treatment for idiopathic scoliosis. It is equally effective in treating thoracic and thoracolumbar curves. This low cost method affords the patient curve reduction with minimal risk. (AU)


Assuntos
Feminino , Humanos , Masculino , Escoliose/cirurgia , Dorso/anormalidades , Fusão Vertebral , Trinidad e Tobago , Estudos Retrospectivos , Fios Ortopédicos/estatística & dados numéricos , Escoliose/terapia
5.
West Indian Med J ; 44(3): 91-2, 1995 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-8560886

RESUMO

A pre-operative autologous blood donation programme was started in 1988 and made available to all doctors offering elective surgical procedures. Two hundred and seventy-seven (277) patients presented for autologous donation over a five-year period. Nine point four per cent were rejected because of low haemoglobin ( < 10.5 g/dl). The single biggest user of the programme was the Princess Elizabeth Hospital for handicapped persons. Patients undergoing orthopaedic procedures gave 50% of the donations, and ranged in age from 10 to 73 years. The oldest donor was a 73-year-old man who had an abdominal aortic aneurysm replaced. Gynaecological surgeons in the public and private sectors together provided 43.9% of donors, 3.6% of these underwent elective Caesarean Section, each donating one unit of blood at 36 weeks. Patients undergoing general surgical procedures comprised 10.4% of donors. Autologous donors contributed 1.3% of the total number of donations over this period.


Assuntos
Doadores de Sangue , Transfusão de Sangue Autóloga , Cuidados Pré-Operatórios , Adulto , Idoso , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Trinidad e Tobago
6.
West Indian med. j ; West Indian med. j;44(3): 91-2, Sept. 1995.
Artigo em Inglês | MedCarib | ID: med-5885

RESUMO

A pre-operative autologous blood donation programme was started in 1988 and made available to all doctors offering elective surgical procedures. Two hundred and seventy-seven (277) patients presented for autologous donation over a five-year period. Nine point four per cent were rejected because of low haemoglobin (<10.5 g/dl). The single biggest user of the programme was the Princess Elizabeth Hospital for handicapped persons. Patients undergoing orthopaedic procedures gave 50 per cent of the donations, and ranged in age from 10 to 73 years. The oldest donor was a 73-year-old man who had an abdominal aortic aneurysm replaced. Gynaecological surgeons in the public and private sectors together provided 43.9 percent of donors, 3.6 percent of these underwent elective Caesarean Section, each donating one unit of blood at 36 weeks. Patients undergoing general surgical procedures comprised 10.4 percent of donors. Autologous donors contributed 1.3 percent of the total number of donations over this period (AU)


Assuntos
Humanos , Masculino , Feminino , Criança , Adolescente , Adulto , Pessoa de Meia-Idade , Idoso , Transfusão de Sangue Autóloga/tendências , Trinidad e Tobago , Doadores de Sangue
7.
West Indian med. j ; West Indian med. j;44(3): 91-2, Sept. 1995.
Artigo em Inglês | LILACS | ID: lil-152463

RESUMO

A pre-operative autologous blood donation programme was started in 1988 and made available to all doctors offering elective surgical procedures. Two hundred and seventy-seven (277) patients presented for autologous donation over a five-year period. Nine point four per cent were rejected because of low haemoglobin (<10.5 g/dl). The single biggest user of the programme was the Princess Elizabeth Hospital for handicapped persons. Patients undergoing orthopaedic procedures gave 50 per cent of the donations, and ranged in age from 10 to 73 years. The oldest donor was a 73-year-old man who had an abdominal aortic aneurysm replaced. Gynaecological surgeons in the public and private sectors together provided 43.9 percent of donors, 3.6 percent of these underwent elective Caesarean Section, each donating one unit of blood at 36 weeks. Patients undergoing general surgical procedures comprised 10.4 percent of donors. Autologous donors contributed 1.3 percent of the total number of donations over this period


Assuntos
Humanos , Masculino , Feminino , Criança , Adolescente , Adulto , Pessoa de Meia-Idade , Transfusão de Sangue Autóloga/tendências , Procedimentos Cirúrgicos Eletivos , Trinidad e Tobago , Doadores de Sangue
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