Abstract:
BACKGROUND:Tracheal occlusion (TO) promotes fetal lung growth through an increase in intraluminal pressure. Although evidence suggests that fetal TO (FETO) decreases the occurrence of pulmonary hypertension in severe congenital diaphragmatic hernia, controversies on its effect on the pulmonary circulation remain. Therefore, we investigated the effects of FETO on the lung hemodynamics in a chronically catheterized fetal lamb model. METHODS:Fifteen pregnant ewes were operated on between 125 and 128 days of gestation (term: 145 days). Catheters and ultrasonic flow transducer were placed through a left thoracotomy in the lamb fetus to determine aortic, pulmonary and left atrial pressures, and left pulmonary artery blood flow. A balloon was positioned between the carina and vocal cords under fetoscopic control. The animals were assigned to either control (n=6) or FETO (n=9) groups. TO was performed by inflating the balloon. We studied the acute effects of temporary (2-h) and prolonged (4-day) TO on basal pulmonary vascular tone and on the pulmonary vascular reactivity to acetylcholine and to increased fetal oxygen tension. RESULTS:We found that left pulmonary blood flow (LPA) increased and pulmonary vascular resistance (PVR) decreased by 20% during brief TO (p<0.05). After balloon deflation, LPA blood flow further increased by 40%, and PVR decreased by 50% compared to baseline values (p<0.05). In contrast, no change in LPA blood flow or PVR was observed during prolonged TO. Moreover, the vasodilator responses to acetylcholine and to increased fetal PaO2 were blunted during TO. CONCLUSIONS:These data indicate that antenatal tracheal occlusion promotes active pulmonary vasodilation, which is partly blunted by the mechanical effects of elevation of the intraluminal pressure.
journal_name
J Pediatr Surgjournal_title
Journal of pediatric surgeryauthors
Aubry E,Fayoux P,Jani J,Deprest J,Deruelle P,Houfflin-Debarge V,Storme Ldoi
10.1016/j.jpedsurg.2012.08.024subject
Has Abstractpub_date
2013-03-01 00:00:00pages
481-7issue
3eissn
0022-3468issn
1531-5037pii
S0022-3468(12)00688-4journal_volume
48pub_type
杂志文章abstract::Pilomatrixoma is a benign tumor of hair follicles that usually occurs as a single tumor and appears in the head and neck region, extremities, and trunk. The authors present a case of pilomatrixoma with multifocal localization. Simple excision of lesions is the recommended procedure, and recurrence usually is rare. ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1053/jpsu.2002.34496
更新日期:2002-08-01 00:00:00
abstract:BACKGROUND/PURPOSE:Adnexal torsion is a serious condition that frequently may result in ovarian removal, and there always is a risk of castration if the contralateral ovary undergo torsion as well. In this study, the authors present their experience with adnexal torsion in 15 children and describe a catastrophic event,...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章,评审
doi:10.1053/jpsu.2002.36195
更新日期:2002-11-01 00:00:00
abstract:BACKGROUND:Phrenic nerve palsy in infants and young children usually results from birth injury or iatrogenic damage. The newborn almost invariably presents with severe respiratory distress, diaphragmatic elevation, and paradoxical movement at the affected side. METHODS/RESULTS:In this retrospective analysis a group of...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(98)90325-6
更新日期:1998-04-01 00:00:00
abstract:INTRODUCTION:Appendicitis is the most common pediatric emergent surgical condition, with 77,000 American pediatric admissions costing $680 million US annually. Diagnosing appendicitis can be challenging. The prospective Quality Assurance and performance improvement project for suspected aPPEndicitis (QAPPE) study imple...
journal_title:Journal of pediatric surgery
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abstract:BACKGROUND:Enteric neural crest cells (ENCCs) were labeled with VENUS, an enhanced green fluoroscein protein, to record their migration in genetically engineered transgenic (SOX10-VENUS) mice. MATERIALS AND METHODS:Pregnant SOX10-VENUS mice were killed on day 12.5 of gestation. The colorectum was excised from each emb...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2011.09.020
更新日期:2011-12-01 00:00:00
abstract::Because postoperative apnea and bradycardia in premature infants following inguinal herniorrhaphy remains a concern, outpatient repair has not been recommended. We have been performing outpatient inguinal herniorrhaphy in premature infants and the present study reviews our experience. Between 1985 and 1990, 1,294 outp...
journal_title:Journal of pediatric surgery
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doi:10.1016/0022-3468(92)90313-v
更新日期:1992-02-01 00:00:00
abstract::Inflammatory cloacogenic polyp (ICP) is a rare lesion arising in the region of the anorectal transitional zone. It is likely caused by occult internal prolapse. Most cases reported in the literature are in the adult population. This is a report of ICP in four children. Awareness of this entity in children is important...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/0022-3468(95)90137-x
更新日期:1995-04-01 00:00:00
abstract::A case of pig bite to the prolapsed rectum in a 2(1/2) year old boy is reported because of its rarity and successful management in spite of delayed presentation. ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1053/jpsu.2002.31633
更新日期:2002-04-01 00:00:00
abstract::A 3-month-old boy was operated on for an inguinal tumor. Histological diagnosis was neuroblastoma. This is the second known case of primary paratesticular neuroblastoma reported in the literature. The treatment of choice for Evan's stage I is surgery. ...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(97)90723-5
更新日期:1997-04-01 00:00:00
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journal_title:Journal of pediatric surgery
pub_type: 杂志文章,多中心研究
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更新日期:2012-05-01 00:00:00
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journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2003.09.013
更新日期:2004-01-01 00:00:00
abstract:INTRODUCTION:Helicopter emergency medical services (HEMS) have provided benefit for severely injured patients. However, HEMS are likely overused for the transportation of both adult and pediatric trauma patients. In this study, we aim to evaluate the degree of overuse of helicopter as a mode of transport for head-injur...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2018.04.032
更新日期:2018-09-01 00:00:00
abstract:PURPOSE:The aim of this study was to identify the most accurate prenatal predictors of outcomes and need for fetal surgery for fetuses with high-risk lung masses and vascular tumors. METHODS:The records of all fetuses with high-risk lung mass (congenital cystic adenomatoid malformation-volume ratio > 1.6 or findings o...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2011.10.019
更新日期:2012-01-01 00:00:00
abstract:PURPOSE:Safety profile of different gastrostomy procedures in small children has not been well studied. This study was conducted to investigate whether complication and mortality rates differ between surgical gastrostomy (G-tube) and percutaneous endoscopic gastrostomy (PEG) in infants and neonates. METHODS:In this re...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2017.01.008
更新日期:2017-09-01 00:00:00
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journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2011.10.047
更新日期:2012-01-01 00:00:00
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journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1053/jpsu.2001.27035
更新日期:2001-10-01 00:00:00
abstract:BACKGROUND:Pectus excavatum (PE) is the most common chest well deformity seen in children. In 1997, the Miniature Access Pectus Excavatum repair (MAPER) was presented by Nuss et al, adding a new option for PE repair. This operation entails placing a custom bent metal bar across the chest to mechanically raise the stern...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2004.01.046
更新日期:2004-05-01 00:00:00
abstract:AIM/BACKGROUND:How the gubernaculum guides the testis into the scrotum remains controversial, with various proposals from passive inversion to active growth. We aimed to determine if the gubernaculum contains an area of active proliferation, such as a "progress zone" in a growing embryonic limb bud, using a fluorescent...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2007.04.035
更新日期:2007-09-01 00:00:00
abstract:INTRODUCTION:Traditionally Hirschsprung's disease has been treated by a three-stage procedure. This approach has been associated with stoma problems, three episodes of hospitalization, and a theoretical disadvantage, because of the delayed passage of feces via the rectum, in controlling defecation. The aim of this stud...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
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更新日期:1997-02-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2005-11-01 00:00:00
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journal_title:Journal of pediatric surgery
pub_type: 杂志文章
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journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2008.09.024
更新日期:2009-01-01 00:00:00
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journal_title:Journal of pediatric surgery
pub_type: 杂志文章,评审
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更新日期:1991-11-01 00:00:00
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journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2006.12.019
更新日期:2007-04-01 00:00:00
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journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2006.09.027
更新日期:2007-01-01 00:00:00
abstract:BACKGROUND:Orthotopic liver transplantation (OLT) is the only treatment option for unresectable hepatoblastoma (HB) and hepatocellular carcinoma (HCC) in children. Aggregated outcomes of OLT for these hepatic malignancies have not been evaluated in the United Network for Organ Sharing national database. PURPOSE:The pu...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2005.10.091
更新日期:2006-01-01 00:00:00
abstract:BACKGROUND/PURPOSE:Advances in the management for biliary atresia (BA) have improved the prognosis and has greatly increased the number of long-term survivors. Even the long-term survivors, however, still face some problems. This retrospective review was performed to assess pregnancy-associated issues in long-term surv...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2007.03.027
更新日期:2007-08-01 00:00:00
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journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/j.jpedsurg.2005.01.009
更新日期:2005-04-01 00:00:00
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journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/0022-3468(94)90726-9
更新日期:1994-05-01 00:00:00
abstract::Surgical experience with 9 patients with chronic pancreatitis is reviewed. Vague, atypical abdominal pain and obstructive jaundice were the most common form of presentation. Serum amylase was elevated in less than half the patients. Ultrasound, ERCP, and operative cholangiopancreatography were the most helpful studies...
journal_title:Journal of pediatric surgery
pub_type: 杂志文章
doi:10.1016/s0022-3468(82)80468-5
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