Detection of additional abnormalities or co-morbidities in women with suspected intrahepatic cholestasis of pregnancy
Background Current guidelines recommend viral, autoimmune, coagulation and liver ultrasound testing in intrahepatic cholestasis of pregnancy to exclude alternative diagnoses. Methods Electronic health records were searched for investigations and diagnoses in women with raised bile acid concentrations (>10 µmol/L) between January 2016 and December 2017 at two UK maternity units. Results Five hundred and thirty-one women had a raised bile acid concentration (median (IQR): 18 (13–32 µmol/L)) at a median gestation of 35.1 (IQR 31.8–37.0) weeks. Out of 531 women, 250 (47.1%) had full virology, autoimmune and ultrasound tests, and 348 (65.5%) had coagulation performed. Positive hepatitis B and C results were previously known. No new Epstein–Barr virus, cytomegalovirus or hepatitis A diagnoses were made. There were 11 positive autoimmune results, but no new diagnoses. No woman had an unexplained prolonged prothrombin time. No ultrasound liver ( n = 38) or gallbladder ( n = 85) abnormalities were of acute clinical significance. Conclusion Intrahepatic cholestasis of pregnancy investigations provided no new diagnoses that influenced clinical management during pregnancy.