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Fetal ultrasound at 30 weeks and 1 day. (a) Fetal ascites, (b) fetal ascites, normal appearance of the kidneys, (c) small capacity bladder with thickened walls
Source publication
Background:
Fetal bladder rupture causing urinary ascites is uncommon. It is generally related to invasive fetal medicine procedures or obstructive disorders such as in posterior urethral valves in male fetuses. An exceptional case of spontaneous bladder rupture in a female fetus occurred in a pregnant woman treated with high doses of opiates in a...
Citations
... Fetal bladder rupture is a very rare condition usually caused by congenital lower urinary tract obstruction (LUTO) [1]. However, this complication can exceptionally occur in the absence of any urogenital malformation after maternal high-dose opioid therapy [2][3][4][5]. ...
Objectives
Fetal bladder rupture is rare and mainly caused by lower urinary tract obstruction (LUTO). Our case report describes a rupture at a gestational age of 31 weeks following high-dose maternal opioid exposure during intensive care treatment. Opioids perturb the interplay of afferent and efferent signals between the bladder, urethra, and the central nervous system (CNS) which is crucial in contributing to urinary retention. They rapidly cross the human placenta, affecting also the fetus. To date, there is no clear proof of the connection between maternal opioid treatment and fetal bladder rupture, but the association seems to strengthen.
Case presentation
A 18-year old first Gravida at 31 weeks of gestation developed a severe sepsis with progressive hypoxic lung failure and need for intubation. During the ICU-treatment, several opioids were administered for sedation and pain relief. Four days after induction of opioid treatment the ultrasound revealed a decompressed fetal bladder, hematoma and significant ascites. Fetal bladder rupture with urinary ascites was suspected. A caesarean section was performed at 33 weeks of gestation due to massive fetal urinary ascites, fetal deterioration and imminent abdominal compartment syndrome. Adequate ventilation and circulation could only be established after percutaneous drainage of 350 mL of abdominal fluid, that was confirmed to be urine. A defect of the bladder was confirmed by ultrasound. On the fifth day of life, the bladder was closed surgically by pediatric surgery.
Conclusions
Growing awareness of the possible connection between maternal opioid therapy and fetal bladder rupture is necessary to plan follow-up ultrasound examinations to assess the fetal situation.
... Neonates with urinary ascites usually present as a clinical emergency, requiring resuscitation, respiratory and cardiovascular failure requiring critical care support, and renal impairment [2]. It is a life-threatening condition as the peritoneal membrane "autodialyzes" the urine, leading to a progressive increase in the blood urea nitrogen (BUN) and derangement of the serum electrolytes [3]. Diagnosis is suspected on the basis of ascites with deranged renal function and is confirmed by imaging [4]. ...
Bladder rupture leading to urinary ascites in neonates is a very rare occurrence. It can present as a clinical emergency, requiring resuscitation, ventilator support, and acute derangement in renal function. There are only a few reported cases so far in the literature. The commonest etiology is posterior urethral valves which can occasionally lead to urinary ascites even in fetal life. But other proposed etiologies are umbilical arterial catheterization in extreme preterm babies and iatrogenic due to urethral catheterization injuries. Early detection is crucial so that appropriate management, including surgical drainage of the urine if performed early, can lead to the normalization of renal function. Large perforations may need surgical repair after stabilization. These cases can be a challenge for both neonatologists and surgeons. We report a case of bladder perforation in an extreme preterm baby at our hospital.
Introduction
A case of spontaneous fetal bladder rupture occurring in a woman with SARS-CoV-2 pneumonia receiving invasive ventilatory support is reported.
Case
A 33-year-old woman was admitted at 30.6 weeks’ gestation with the diagnosis of severe pneumonia due to COVID-19. The patient required invasive mechanical ventilation on day 2. Propofol, fentanyl, midazolam, and dexmedetomidine were administered for sedation, pain relief, and to improve patient-ventilator interaction. A bedside ultrasound on day 3 revealed fetal megacystis. Follow-up scan two days later showed urinary ascites and a collapsed bladder. The diagnosis of fetal bladder rupture was confirmed postpartum. Bladder repair was performed on day 5, with an uneventful recovery.
Discussion
Transplacental transfer of opioids during invasive ventilatory support in pregnancy may cause acute fetal bladder atony leading to severe urine retention and, potentially, bladder rupture. This can be a serious complication of adjunctive therapy in women with severe SARS-CoV-2 pneumonia.
