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TORCH screening in polyhydramnios: an observational study
1Obstetrics & Gynaecology Department, Scarborough General Hospital, Woodlands Drive Scarborough, North Yorkshire, YO12 6QL, United Kingdom.
Aim:
The aim of this study was to understand the TORCH test and to evaluate its significance in women with polyhydramnios in singleton pregnancies.
Method:
Retrospective analysis of indications and results of TORCH referrals made from November 2007 to 2009 with detailed review of case notes of women with polyhydramnios who had TORCH test.
Results:
The total number of deliveries during specimen time was 3004, out of which 110(3.6%) had serum TORCH screening. The main indication for this test was polyhydramnios 62 (56.36%) followed by obstetric cholestasis 20 (18.18%), Intra-uterine fetal demise 6 (5.45%), fetal anomalies 5(4.54%), and deranged liver function tests (LFTs) 2 (1.8%). 15 (13.6%) women had TORCH screening for other indications such as clinical polyhydramnios, increased nuchal translucency (>2.5 mm). cytomegalovirus (CMV) and toxoplasmosis antibodies were tested in all cases whereas, parvovirus and herpes simplex virus screen were carried out in 4 (12.7%) and 2 (1.8%) patients, respectively. One woman (0.09%) had infection with CMV who had TORCH screening carried out for deranged LFTs. None of these women had positive TORCH screening giving the p value of <0.0001. These women also did not have any associated perinatal or maternal mortality.
Conclusions:
While the sample size of this study is small to disregard the significance of TORCH test in polyhydramnios, the statistical evaluation shows that this test is not beneficial in women in whom polyhydramnios is an isolated ultrasound finding, especially when it is diagnosed in third trimester.
