Prominent publications by Michael R Harrison

KOL Index score: 18094

OBJECTIVE: To assess the value of antenatally determined observed to expected fetal lung area to head circumference ratio (LHR) in the prediction of postnatal survival in isolated, congenital diaphragmatic hernia (CDH).

METHODS: Two groups of fetuses were examined. The first group included 650 normal fetuses at 12-32 weeks' gestation, and the data collected were used to establish a normal range of observed to expected LHR with gestational age. The second group included the data of a ...

Also Ranks for: Circumference Ratio |  cdh lhr |  expected lung |  survival fetuses |  isolated diaphragmatic hernia
KOL Index score: 14446

Most fetuses with congenital diaphragmatic hernia (CDH) diagnosed before 24 weeks' gestation die despite optimal postnatal care. In fetuses with liver herniation into the chest, prenatal repair has not been successful. In the course of exploring the pathophysiology of CDH and its repair in fetal lambs, the authors found that obstructing the normal egress of fetal lung fluid enlarges developing fetal lungs, reduces the herniated viscera, and accelerates lung growth, resulting in improved ...

Also Ranks for: Congenital Diaphragmatic |  tracheal occlusion |  fetal trachea |  hypoplastic lung |  liver herniation
KOL Index score: 14396

BACKGROUND/PURPOSE: Fetuses with congenital diaphragmatic hernia (CDH) who have a "poor prognosis" with postnatal treatment now can be identified on the basis of liver herniation, early diagnosis (before 25 weeks' gestation) and a low lung-to-head ratio (LHR). Because complete in utero repair proved unsuccessful for this group, the strategy of temporary tracheal occlusion was developed to gradually enlarge the hypoplastic fetal lung. The purpose of this study is to compare the outcome of ...

Also Ranks for: Liver Herniation |  tracheal occlusion |  congenital diaphragmatic hernia |  fetuses cdh |  fetoscopic temporary
KOL Index score: 13692

OBJECTIVE: Fetal intervention for obstructive uropathy was first performed at the University of California, San Francisco in 1981. Indications for treatment were bilateral hydronephrosis with oligohydramnios. Preintervention criteria included fetal urinary electrolytes with beta-microglobulin levels, karyotyping, and detailed sonography specifically looking for renal cortical cysts. We reviewed the outcomes of children who underwent fetal intervention with specific long-term follow-up in ...

Also Ranks for: Posterior Urethral Valves |  fetal surgery |  obstructive uropathy |  renal function |  urinary diversion
KOL Index score: 13438

OBJECTIVE: Our purpose was to review our experience with fetal congenital cystic adenomatoid malformation and extralobar pulmonary sequestration emphasizing natural history, management, and outcome.

STUDY DESIGN: We conducted a retrospective review of 175 fetal lung lesions diagnosed by antenatal ultrasonography at 2 fetal treatment centers.

RESULTS: There were 134 congenital cystic adenomatoid malformation cases. Fourteen women underwent elective abortion, 101 women were managed ...

Also Ranks for: Lung Lesions |  thoracoamniotic shunting |  nonimmune hydrops |  postnatal resection |  fetal congenital
KOL Index score: 13336

Transplantation of hematopoietic stem cells (HSC) from adult sheep into fetal lambs results in hematopoietic chimerism and graft-versus-host disease (GVHD). To evaluate the role of T cells in HSC engraftment and GVHD we depleted adult marrow HSC of T cells and observed the incidence of chimerism and GVHD in the fetal recipients. Using a naturally occurring polymorphism of the beta-globin locus to detect engraftment, bone marrow obtained from homozygous type A hemoglobin adult sheep were ...

Also Ranks for: Host Disease |  hematopoietic stem cells |  utero transplantation |  donor hsc |  fetal recipients
KOL Index score: 12860

OBJECTIVE: The purpose of this study was to investigate the relationship between lung-to-head ratio (LHR) and gestational age (GA) in fetuses with isolated left congenital diaphragmatic hernia and to determine the applicability and reliability of LHR to predict postnatal outcome beyond 24-26 weeks of gestation.

STUDY DESIGN: The institutional review board approved this retrospective review of the University of California, San Francisco, Fetal Treatment Center database for cases with left ...

Also Ranks for: Diaphragmatic Hernia |  postnatal survival |  lhr measurement |  head ratio |  24 weeks
KOL Index score: 12717

Of 130 infants with esophageal atresia who were operated on during the past 12 yr, 7 (5.4%) had a right aortic arch. In 1 infant, preoperative recognition of the right arch allowed successful primary repair of the esophagus through the left chest. In 6 infants, an unsuspected right arch was found at the time of initial right thoracotomy. In 2, repair from the right side was difficult but successful. In 4, however, the right arch markedly altered the clinical course, leading to the death ...

Also Ranks for: Aortic Arch |  esophageal atresia |  multiple aorta |  thoracotomy repair |  1 infant
KOL Index score: 12440

Wound healing is a complex process involving the interaction of many cell types with the extracellular matrix (ECM). Fetal skin wound healing differs from that in the adult in that it occurs rapidly and without scar formation. The mechanisms underlying these differing processes may be related to the fetal environment, the stage of differentiation of the fetal cells or the ECM deposited in the wound. The spatial and temporal distribution of two components of the ECM, fibronectin and ...

Also Ranks for: Fetal Wound |  fibronectin tenascin |  cell migration |  scar formation |  matrix ecm
KOL Index score: 12075

The purpose of the present study was to determine the ability of lung-to-head ratio to predict survival and need for extracorporeal membrane oxygenation support in fetuses with left congenital diaphragmatic hernia without herniation of the liver into the chest. The perinatal records of 20 fetuses with isolated left congenital diaphragmatic hernia without herniation of the left lobe of the liver into the chest were reviewed. Fetuses were stratified into two groups depending on ...

Also Ranks for: Head Ratio |  diaphragmatic hernia |  survival fetuses |  fetal death |  gestational age
KOL Index score: 11742

BACKGROUND/PURPOSE: Development of hydrops fetalis in fetuses with congenital cystic adenomatoid malformations (CCAM) is a significant risk factor for fetal or neonatal demise. In rare cases, resolution of CCAM has occurred, presumably owing to lesion maturation or involution. Steroid therapy, utilized for lung maturity, has been postulated to accelerate this process. The natural history of hydropic fetuses with CCAM after receiving steroid therapy is presented.

METHODS: The authors ...

Also Ranks for: Hydrops Fetalis |  steroid therapy |  congenital cystic |  adenomatoid malformation |  3 patients
KOL Index score: 10890

Despite advances in postnatal care, patients born with a congenital diaphragmatic hernia (CDH) suffer substantial morbidity and mortality. The present study was undertaken to determine the prognostic influence of prenatally-diagnosed liver herniation in the hemithorax in fetuses with CDH. The medical records of 48 patients evaluated for a prenatally-diagnosed left CDH were retrospectively reviewed. Patients were analysed according to the position of the liver by prenatal ultrasound; 32 ...

Also Ranks for: Liver Position |  congenital diaphragmatic hernia |  perinatal outcome |  fetuses cdh |  postnatal survival
KOL Index score: 10810

PURPOSE: To determine the interobserver variability of prenatal magnetic resonance (MR) lung volumetry and to assess the value of MR lung volumetric findings as predictors of outcome in fetuses with congenital diaphragmatic hernia.

MATERIALS AND METHODS: Prenatal MR imaging was performed in 26 fetuses with unilateral congenital diaphragmatic hernia. Two independent observers performed planimetric measurement of lung volume. Relative lung volume was calculated as the observed total lung ...

Also Ranks for: Congenital Diaphragmatic |  relative lung volume |  pregnancy outcome |  prenatal imaging |  gestational age
KOL Index score: 10759

BackgroundOpen inguinal hernia repair with high ligation is an excellent method of repair in the pediatric population. Advantages of endoscopic repairs include the ability to evaluate the contralateral side, avoidance of access trauma to the vas deferens and gonadal vessels, and decreased operative time. We now report our experience with subcutaneous endoscopically assisted ligation (SEAL), a novel technique that has proved to be a safe and effective in the treatment of inguinal hernia ...

Also Ranks for: Inguinal Hernias |  new technique |  internal ring |  pediatric population |  recurrence rate
KOL Index score: 10564

PURPOSE: The sequelae of congenital diaphragmatic hernia (CDH) continue well beyond the perinatal period. Up to 50% of these patients have subsequent recurrent herniation or small bowel obstruction (SBO). A recent trend has been toward the use of bioactive prosthetic materials. We reviewed different patch closure techniques used for CDH repair at our institution and their association with these sequelae.

METHODS: A retrospective review was performed of 152 records for patients with CDH. ...

Also Ranks for: Diaphragmatic Hernia |  prosthetic patches |  patients cdh |  surgisis repair |  gore tex

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Michael R Harrison:Expert Impact

Concepts for whichMichael R Harrisonhas direct influence:Fetal surgery,  Congenital diaphragmatic hernia,  Diaphragmatic hernias,  Diaphragmatic hernia,  Hyaluronic acid,  Congenital diaphragmatic,  Wound healing,  Cleft lip.

Michael R Harrison:KOL impact

Concepts related to the work of other authors for whichfor which Michael R Harrison has influence:Congenital diaphragmatic hernia,  Prenatal diagnosis,  Fetal surgery,  Wound healing,  Gestational age,  Pulmonary hypoplasia,  Amniotic fluid.



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Division of Pediatric Surgery, Department of Surgery, University of California San Francisco, San Francisco, California | Department of Pediatric Surgery, University of California at San Francisco, San Francisco, California, United States; Magnamosis