Further study on the physiological effects of an alternative spit mask.

Abstract:

OBJECTIVES:Spit masks are used by law enforcement officers and healthcare providers to protect themselves from the spread of communicable disease by subjects who pose a potential risk of biological exposure by spitting. Little research is available regarding the safety of these masks. However, concerns surround the ability of subjects to properly ventilate while wearing these masks as there are several anecdotal incidents of asphyxiation. A recent pilot study performed by our group showed no significant changes in ventilatory or circulatory parameters in healthy adults wearing a standard spit mask. In this study we aim to further this baseline research by testing physiological parameters in subjects wearing an alternative design of spit mask. METHODS:This prospective study evaluated the changes in respiratory and circulatory parameters in healthy adult subjects wearing a Safariland Tranzport Hood spit mask (SKU: 8320-0-2C) at rest. Baseline measurements of pulse, blood pressure, respiratory rate, oxygen saturation, and end-tidal CO2 were taken while sitting at rest. The spit mask was then placed over the subject's head and repeat measurements were taken at 5, 10, and 15 min. Measurements at 5, 10, and 15 min were compared to baseline using paired t tests with 95% confidence intervals using SPSS. RESULTS:A total of 15 subjects participated in the study. There was no significant difference between baseline and at 5, 10, and 15 min after spit mask application in heart rate (p = 0.246, p = 0.785, p = 0.502, respectively), oxygen saturation (p = 0.751, p = 0.334, p = 1.00, respectively), respiratory rate (p = 0.866, p = 0.270, p = 0.106, respectively), systolic blood pressure (p = 0.385, p = 0.481, p = 0.182, respectively), and diastolic blood pressure (p = 0.832, p = 0.516, p = 0.597, respectively). For end-tidal CO2, there was no significant difference between baseline and at 10 and 15 min (p = 0.586, p = 0.416, respectively). End-tidal CO2 was significantly increased from baseline at 5 min (p = 0.042). CONCLUSIONS:In healthy adult subjects, there were no clinically significant differences in respiratory or circulatory parameters while wearing the Safariland Tranzport Hood spit mask.

journal_name

J Forensic Leg Med

authors

Marigold O,Castillo EM,Sloane C,Brennan J,Coyne CJ,Swift S,Vilke GM

doi

10.1016/j.jflm.2020.101945

subject

Has Abstract

pub_date

2020-05-01 00:00:00

pages

101945

eissn

1752-928X

issn

1878-7487

pii

S1752-928X(20)30052-4

journal_volume

72

pub_type

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