Risk analysis of cold ischemia time (CIT) in liver transplantation has largely focused on patient and graft survival. Posttransplant length of stay is a sensitive marker of morbidity and cost. We hypothesize that CIT is a risk factor for posttransplant prolonged length of stay (PLOS) and aim to conduct an hour-by-hour analysis of CIT and PLOS. We retrospectively reviewed all adult, first-time liver transplants between March 2002 and September 2016 in the United Network for Organ Sharing database. The 67,426 recipients were categorized by hourly CIT increments. Multivariate logistic regression of PLOS (defined as >30 days), CIT groups, and an extensive list of confounding variables was performed. Linear regression between length of stay and CIT as continuous variables was also performed. CIT 1-6 hours was protective against PLOS, whereas CIT >7 hours was associated with increased odds for PLOS. The lowest odds for PLOS were observed with 1-2 hours (odds ratio [OR], 0.65; 95% confidence interval [CI], 0.45-0.92) and 2-3 hours (OR, 0.65; 95% CI, 0.55-0.78) of CIT. OR for PLOS steadily increased with increasing CIT, reaching the greatest odds for PLOS with 13-14 hours (OR, 2.05; 95% CI, 1.57-2.67) and 15-16 hours (OR, 2.06; 95% CI, 1.27-3.33) of CIT. Linear regression revealed a positive correlation between length of stay and CIT with a correlation coefficient of +0.35 (P < 0.001). In conclusion, post-liver transplant length of stay is sensitive to CIT, with a substantial increase in the odds of PLOS observed with nearly every additional hour of cold ischemia. We conclude that CIT should be minimized to protect against the morbidity and cost associated with posttransplant PLOS. Liver Transplantation 24 762-768 2018 AASLD.
Objectives Prenatal myelomeningocele (MMC) repair has been shown to provide significant benefits to the infant, decreasing the postnatal need for ventriculoperitoneal shunt and improving motor outcome. Chorioamniotic membrane separation (CAS) is a potential complication following prenatal MMC repair and may increase the risk of preterm prelabor rupture of membranes (PPROM) and preterm birth. The objectives of this study were: (1) to evaluate the incidence of CAS after prenatal MMC repair; (2) to determine risk factors associated with its occurrence; and (3) to assess its association with adverse perinatal outcomes. Methods This was a retrospective cohort study of patients who underwent fetal MMC repair between November 2011 and December 2018. Surgery was performed using either a fetoscopic (laparotomy or exteriorized uterus) approach or an open‐hysterotomy approach. Eligibility criteria were those reported in the Management of Myelomeningocele Study. If CAS was detected on ultrasound (US), its severity was graded as ‘mild’ if amnion detachment involved < 25% of the uterine cavity, ‘moderate’ if it involved 25–50% and ‘severe’ if it involved > 50%. Evolution of CAS was classified as stable, increasing or decreasing based on the difference in severity grading between the time at first diagnosis and the last US scan before delivery. Logistic regression analysis was performed to identify pre‐ or perisurgical factors associated with the development of CAS and to determine the risk of adverse perinatal outcome associated with CAS. Results In total, 91 cases were included. Fetoscopic or open‐hysterotomy repair of MMC was performed in 52/91 (57.1%) and 39/91 (42.9%) cases, at a median gestational age (GA) of 25.0 weeks (range, 22.9–26.0 weeks) and 25.0 weeks (range, 21.3–25.9 weeks), respectively. CAS was diagnosed in 31/91 (34.1%) patients, at a median GA of 28.1 weeks (range, 24.4–37.6 weeks). Anterior placenta was identified as a risk factor for the postoperative development of CAS (odds ratio (OR), 3.72 (95% CI, 1.46–9.5); P < 0.01). This risk was dependent on the repair technique. An anterior placenta significantly increased the risk of CAS after fetoscopic repair (OR, 3.94 (95% CI, 1.14–13.6); P = 0.03) but not after open repair (OR, 2.8 (95% CI, 0.6–12.5); P = 0.16). There was no significant difference in the rate of CAS after fetoscopic repair (21/52 (40.4%)) vs open‐hysterotomy repair (10/39 (25.6%)) (P = 0.14), nor were there any differences in GA at diagnosis of CAS, interval between surgery and diagnosis, distribution of CAS severity or progression of CAS between the two groups. CAS increased the risk of PPROM (50% in those with vs 12% in those without CAS) (OR, 7.6 (95% CI, 2.5–21.9); P < 0.01) and preterm delivery (70% vs 38%) (OR, 3.2 (95% CI, 1.3–8.1); P < 0.01). Fetoscopically repaired cases with CAS had a higher rate of PPROM (12/20 (60.0%) vs 2/31 (6.5%); P < 0.01) and preterm delivery (13/20 (65.0%) vs 5/31 (16.1%); P < 0.01) than those that did not develop CAS, while the differences were not...
<b><i>Background:</i></b> Fetal myelomeningocele (fMMC) repair yields superior outcomes to postnatal repair and is increasingly offered at select fetal centers. <b><i>Objectives:</i></b> To report the fMMC referral process from initial referral to evaluation and surgical intervention in a large fetal referral center. <b><i>Methods:</i></b> We conducted a retrospective cohort study of patients referred to Texas Children’s Fetal Center for fMMC between September 2013 and January 2018, reviewing the process from referral to final disposition. The stepwise evaluation included a phone interview followed by multidisciplinary consultation at our fetal center. We modified the Management of Myelomeningocele Study inclusion and exclusion criteria to allow a maternal body mass index of 35–40 on an individual basis. <b><i>Results:</i></b> A total of 204 referrals were contacted for a phone interview; 175 (86%) pursued outpatient evaluation, and 80 (46%) of them qualified for repair. Among the eligible patients, 37 (46%) underwent fetoscopic repair, 20 (25%) underwent open repair, and 17 (21%) declined prenatal surgery. Of the 89 noneligible patients (53%) excluded upon outpatient evaluation, 64 (72%) were excluded for fetal and 17 (19%) for maternal reasons. No hindbrain herniation (16%) and maternal BMI and/or hypertension (5%) were the most common reasons for fetal and maternal exclusion, respectively. A total of 31% of our referral population underwent fetal surgery. <b><i>Conclusions:</i></b> A small percentage of fMMC referrals ultimately undergo prenatal surgery. Stepwise evaluation and multidisciplinary teams are key to the success of large referral programs.
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