The effect of mask use on maternal oxygen saturation in term pregnancies during the COVID-19 process
-
Erzat Toprak
and
Ayça Nazlı Bulut
Abstract
Objectives
Our aim was to evaluate the effect of standard surgical and N-95 respiratory mask use on maternal oxygen saturation, vital signs and result on non-stress tests in term pregnancies.
Methods
It is a prospective observational study. The study included healthy, not in labor, singleton pregnant women of 370/7–410/7 weeks who were applied to our hospital for routine obstetric control examination between March 1, 2020, and August 31, 2020. Patients were randomised by coin toss method. Oxygen saturation, systolic, and diastolic arterial blood pressure, pulse, respiratory rate, and temperature of pregnant women using surgical masks and respiratory masks were measured before and after the non-stress test. The tolerance of the masks was also evaluated. Student’s t-test was used for variables showing parametric distribution and the Mann Whitney U-test was used for non-parametric tests. The categorical variables between the groups was analyzed by using the Chi square test or Fisher Exact test. The statistical significance level was taken as p<0.05 in all tests.
Results
A total of 297 pregnant women using masks were included in the study. The effect of mask type on oxygen saturation before and after the non-stress test was found to be significant (97.1±1.8 corresponds to 95.3±2.6 for the surgical mask, p=0.0001; 97.8±1.7 corresponds to 93.7±2.0 for the respiratory mask, p=0.0001). Mask tolerance of patients using respiratory masks was significantly higher than those using surgical masks (mean 8, 1–10, p=0.0001).
Conclusions
Surgical mask and respiratory mask usage decreased significantly in oxygen saturation in term pregnancies.
Researchfunding: None declared.
Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
Competing interests: Authors state no conflict of interest.
Informed consent: Informed consent was obtained from all patients included in the study.
Ethical approval: Approval was obtained from the regional Ethics Committee for this study.
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© 2020 Walter de Gruyter GmbH, Berlin/Boston
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- Corner of Academy
- Long term alterations of growth after antenatal steroids in preterm twin pregnancies
- Original Articles – Obstetrics
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- Does the length of second stage of labour or second stage caesarean section in nulliparous women increase the risk of preterm birth in subsequent pregnancies?
- Reference range for C1-esterase inhibitor (C1 INH) in the third trimester of pregnancy
- Termination of pregnancy following a Down Syndrome diagnosis: decision-making process and influential factors in a Muslim but secular country, Turkey
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- Cervical elastography strain ratio and strain pattern for the prediction of a successful induction of labour
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- CD34 immunostain increases sensitivity of the diagnosis of fetal vascular malperfusion in placentas from ex-utero intrapartum treatment
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