Department of Obstetrics and Gynecology, Division of Perinatology, Kayseri City Education and Research Hospital, Kayseri, Turkey.
Department of Obstetrics and Gynecology, Kayseri City Education and Research Hospital, Kayseri, Turkey.
J Perinat Med. 2020 Nov 26;49(2):148-152. doi: 10.1515/jpm-2020-0422. Print 2021 Feb 23.
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.
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.
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).
Surgical mask and respiratory mask usage decreased significantly in oxygen saturation in term pregnancies.
评估标准手术口罩和 N-95 呼吸口罩的使用对足月妊娠产妇氧饱和度、生命体征和无应激试验结果的影响。
这是一项前瞻性观察性研究。研究纳入了 2020 年 3 月 1 日至 8 月 31 日期间因常规产科检查就诊于我院的健康、未临产、单胎妊娠且孕周为 370/7-410/7 周的孕妇。采用抛硬币法将患者随机分为两组。使用手术口罩和呼吸口罩的孕妇在进行无应激试验前后分别测量其氧饱和度、收缩压、舒张压、脉搏、呼吸频率和体温，并评估口罩的耐受性。正态分布的计量资料采用 t 检验，非正态分布的计量资料采用 Mann-Whitney U 检验，组间分类变量采用卡方检验或 Fisher 确切概率法。所有检验均以 p<0.05 为差异有统计学意义。
共有 297 名使用口罩的孕妇纳入研究。无应激试验前后口罩类型对氧饱和度的影响有统计学意义（手术口罩组为 97.1±1.8，呼吸口罩组为 97.8±1.7，p=0.0001）。使用呼吸口罩的患者对口罩的耐受性明显高于使用手术口罩的患者（平均值为 8，1-10，p=0.0001）。
手术口罩和呼吸口罩的使用会显著降低足月妊娠产妇的氧饱和度。
