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Case Reports
. 2021 Nov 1;21(1):742.
doi: 10.1186/s12884-021-04218-1.

Pathological post-obstructive diuresis following obstructive uropathy due to constipation in the post-partum period: a case report

Mohamed Rishard  1 , Thalagala Kossinnage Maheeka Kossinna  2 , Mohamed Nazar Latiff  3 , Susantha De Silva  4 , Mohamed Hilmy Mohamed Asmath  5
Affiliations
Case Reports

Pathological post-obstructive diuresis following obstructive uropathy due to constipation in the post-partum period: a case report

Mohamed Rishard et al. BMC Pregnancy Childbirth. .

Abstract

Background: Constipation during pregnancy is not uncommon. Usually, this does not warrant extensive evaluation and settles with minor interventions or lifestyle modifications. Severe fecal impaction in chronically constipated patients can rarely lead to obstructive uropathy. Relief of obstruction can result in a diuretic phase which may be self-limiting or pathological. However, occurrence of pathological post-obstructive diuresis as a result of severe constipation is an extremely rare complication during pregnancy and puerperium which can even be fatal if not promptly diagnosed and adequately monitored and timely intervened. We describe the management of a pathological post-obstructive diuresis which occurred in the immediate postpartum period after treatment of severe constipation and obstructive uropathy.

Case presentation: A woman who had undergone an emergency caesarean section due to deep transverse arrest 1 week ago, presented with fecal impaction and anuria. On relief of urinary obstruction which had developed secondary to fecal impaction, she developed pathological post-obstructive diuresis. Careful and timely monitoring with exact fluid replacement, correction of electrolyte imbalances and multidisciplinary care ensured complete recovery of the patient.

Conclusions: Despite obstructive uropathy being uncommon in obstetric practice, clinicians need to have a high index of suspicion to monitor and promptly manage the potentially life-threatening condition of post-obstructive diuresis in pregnant and puerperal women undergoing urinary tract decompression. Due to unreliability of laboratory cutoff values in pregnancy and puerperium, a more vigilant and multidisciplinary approach with lower threshold for intervention is more prudent in the management of these patients.

Keywords: Constipation; Fecal impaction; Obstructive uropathy; Post-obstructive diuresis; Post-partum morbidity.

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Conflict of interest statement

The authors declare that they have no competing interests.

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