Effect of External Airflow Resistive Load on Postural and Exercise-Associated Cardiovascular and Pulmonary Responses in Pregnancy: A Case Control Study

Details

• Journal Article:
  BMC Pregnancy and Childbirth
• Personal Author:
  Kim, Jung-Hyun ; Roberge, Raymond J. ; Powell, Jeffrey B.
• Description:
  Background: Facial coverings (e.g., balaclavas, niqabs, medical/surgical masks, respirators, etc.), that impose low levels of airflow resistive loads, are worn by millions of pregnant women worldwide, but little data exist addressing their impact on pregnancy-associated cardiovascular and pulmonary responses. Methods: 16 pregnant and 16 non-pregnant women were monitored physiologically (heart rate, blood pressure, mean arterial pressure, total peripheral resistance, stroke volume, cardiac output, oxygen saturation, transcutaneous carbon dioxide, fetal heart rate) and subjectively (exertion) for 1 h of mixed sedentary postural activity (sitting, standing) and moderate exercise (bicycle ergometer) with and without wearing N95 filtering facepiece respirators with filter resistive loads of 94.1 Pa (9.6 mm H2O) - 119.6 Pa (12.2 mm H2O) pressure. Results: The external airflow resistive loads were associated with increases in diastolic pressure (p = 0.004), mean arterial pressure (p = 0.01), and subjective exertion score (p < 0.001) of all study subjects. No significant differences were noted with the external resistive loads between the pregnant and non-pregnant groups for any cardiovascular, pulmonary and subjective variable over 1 h. Conclusions: Low external airflow resistive loads, during combined sedentary postural activity and moderate exercise over 1 h, were associated with increases in the diastolic and mean arterial pressures of all study subjects, but pregnancy itself was not associated with any significant differences in physiologic or subjective responses to the external airway resistive loads utilized in the study. [Description provided by NIOSH]
• Subjects:
  Air Movements Cardiovascular Diseases Cardiovascular System Exercise Lung Occupational Health Personal Protective Equipment Pregnancy Respiratory Protective Devices Respiratory System Respiratory Tract Diseases Safety

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• Keywords:
  Author Keywords: Pregnancy; External Airflow Resistive Loads; Effects; Cardiovascular; Pulmonary Humans; Women; Pregnancy; Face-shields; Respiration; Respiratory-protection; Respiratory-protective-equipment; Air-flow; Cardiovascular-function; Cardiovascular-system; Cardiovascular-system-disorders; Cardiopulmonary-system; Cardiopulmonary-function; Cardiopulmonary-system-disorders; Physiological-response; Monitoring-systems; Respirators; Respiratory-equipment; Pulmonary-system; Pulmonary-system-disorders; Pulmonary-function;
• Source:
  BMC Pregnancy Childbirth 2015 Feb; 15:45
• ISSN:
  1471-2393
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  NPPTL - National Personal Protective Technology Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  8 pdf pages
• Volume:
  15
• NIOSHTIC Number:
  nn:20046008
• Contact Point Address:
  Raymond J Roberge, National Personal Protective Technology Laboratory, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, 626 Cochrans Mill Road, Pittsburgh 15236
• Email:
  dtn0@cdc.gov
• Federal Fiscal Year:
  2015
• NORA Priority Area:
  Healthcare and Social Assistance
• Peer Reviewed:
  True
• Collection(s):
  National Institute for Occupational Safety and Health CDC Public Access
• Main Document Checksum:
  urn:sha-512:148e021c83e6d5728bd80a95c1a013d0131771652a7d7f5be676d73d376e7973878a2a29b3afd602cb72abeb5228c46784ac003553d1703645e6dfc0151a05e1
• Download URL:
  https://stacks.cdc.gov/view/cdc/28729/cdc_28729_DS1.pdf
• File Type:
  [PDF - 946.26 KB ]