Changes in blood pressure and related risk factors among nurses working in a negative pressure isolation ward

ObjectiveTo observe changes in blood pressure (Delta BP) and explore potential risk factors for high Delta BP among nurses working in a negative pressure isolation ward (NPIW). MethodsData from the single-center prospective observational study were used. Based on a routine practice plan, female nurses working in NPIW were scheduled to work for 4 days/week in different shifts, with each day working continuously for either 5 or 6 h. BP was measured when they entered and left NPIW. Multivariable logistic regression was used to assess potential risk factors in relation to Delta BP >= 5 mm Hg. ResultsA total of 84 nurses were included in the analysis. The Delta BP was found to fluctuate on different working days; no significant difference in Delta BP was observed between the schedules of 5 and 6 h/day. The standardized score from the self-rating anxiety scale (SAS) was significantly associated with an increased risk of Delta BP >= 5 mm Hg (odds ratio [OR] = 1.12, 95% CI: 1.00-1.24). Working 6 h/day (vs. 5 h/day) in NPIW was non-significantly related to decreased risk of Delta BP (OR = 0.70), while >= 2 consecutive working days (vs. 1 working day) was non-significantly associated with increased risk of Delta BP (OR = 1.50). ConclusionThis study revealed no significant trend for Delta BP by working days or working time. Anxiety was found to be significantly associated with increased Delta BP, while no <2 consecutive working days were non-significantly related to Delta BP. These findings may provide some preliminary evidence for BP control in nurses who are working in NPIW for Coronavirus Disease 2019 (COVID-19).