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Amnioinfusion does not elevate intra-amniotic infection risk

01 Mar 2020
First uterus transplant botched due to infection.

In comparison to intrauterine pressure catheter (IUPC) alone, amnioinfusion does not result in a higher rate of intra-amniotic infection, suggests a recent study.

A total of 513 women received IUPC in labour, of whom 130 (25.3 percent) received an amnioinfusion. Those who did and did not receive amnioinfusion had comparable demographic data, but women who received an IUPC with amnioinfusion had a lower body mass index (BMI; 33.4 vs 35.3 kg/m2; p=0.02).

Both groups also showed similar rates of caesarean delivery, median length of time of rupture of membranes (ROM) and median length of time of IUPC placement.

Women who received IUPC and amnioinfusion, compared to those with an IUPC alone, did not have an increased risk of intra-amniotic infection (5.5 percent vs 5.4 percent; adjusted odds ratio [aOR], 1.16, 95 percent confidence interval [CI], 0.47–2.86) or postpartum endometritis (3.4 percent vs 3.9 percent; aOR, 1.13, 95 percent CI, 0.39–3.29).

This retrospective cohort study enrolled women who had an IUPC placed in labour from June 2017 to June 2018 at a tertiary care centre. Clinical intra-amniotic infection referred to a maternal intrapartum fever and one or more of the following: maternal leucocytosis, purulent cervical drainage or foetal tachycardia. Those with a diagnosis of intra-amniotic infection prior to IUPC placement were excluded.

The investigators performed multivariable logistic regression to compare women with an IUPC alone to those with an IUPC and amnioinfusion after adjusting for age, race, BMI, gestational age and length of ROM. They also obtained aOR with 95 percent CIs.

“Amnioinfusion is the instillation of fluid into the uterine cavity through an IUPC and is often used in labour to relieve variable decelerations,” the investigators said. “There is theoretical concern that amnioinfusion may increase the risk of intraamniotic infection due to washing out of the bacteriostatic properties of amniotic fluid.”

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Most Read Articles
01 Apr 2020
Being overweight or obese in adolescence appears to increase the risk of papillary thyroid cancer in adulthood, a recent study has shown.
3 days ago
A recent study reports a mean growth rate of proximal aorta of about 0.1 mm/year in hypertensive patients with known aortic dilatation. In addition, those with increased rather than normal aortic z score have slower dilatation over time.
Tristan Manalac, 2 days ago
The coronavirus disease 2019 (COVID-19) appears to be more dangerous among cancer patients, who tend suffer more severe complications and faster disease progression, according to a new study.
01 Apr 2020
Knee osteoarthritis (OA), whether symptomatic or radiographic, contributes to an increased risk of all-cause mortality, with the risk increase from symptomatic knee OA partially attributed to its effect on disability and quality of life (QoL).