Skip to main content

Table 2 Changes in maternal and fetal physiological parameters breathing through N95 masks compared to controls breathing ambient air

From: Respiratory consequences of N95-type Mask usage in pregnant healthcare workers—a controlled clinical study

N95 Mask vs Control Mean difference SE (95 % CI) P value
Pre exercise maternal heart rate −2.0 1.3 (−4.7; 0.6) 0.11
Exercise maternal heart rate −0.5 1.4 (−3.4; 2.4) 0.71
Post exercise maternal heart rate −0.8 1.6 (−4.1; 2.5) 0.61
Baseline fetal heart rate −0.5 0.6 −1.6; 0.6) 0.33
Capillary lactate 0.5 0.5 (−0.3; 1.4) 0.17
Finger-tip capillary oxygen saturation 0.1 0.02 (−0.06; 0.14 0.32
Borg scale 1.6 0.9 (−0.01; 3.3) 0.060