Key result
Night duty calls are linked to transient ~9 mmHg increases in physician systolic blood pressure.
Why the study?
Do duty events (phone calls) increase blood pressure and alter heart rate variability in physicians on night duty?
Observational (n=12)
Do duty events (phone calls) increase blood pressure and alter heart rate variability in physicians on night duty?
Night duty events such as phone calls transiently elevate blood pressure and sympathetic tone in physicians for up to 30 minutes.
Answers are grounded in this paper and cite their sources.
Physicians may experience transient BP spikes from night duty calls; this observational finding leaves open causal effects on cardiovascular health.
BACKGROUND: The dynamic effects of duty events on the blood pressure (BP) and heart rate variability (HRV) of physicians on duty are unknown. METHODS: A study was conducted among 12 physicians on night duty. BP and HRV with and without the effect of a duty event were compared. The risk of higher BP and impaired HRV after a phone call were calculated. RESULTS: Physicians had higher mean BP (122.4 ± 11.1; 76.9 ± 7.1 mmHg) within 30 min after a phone calls than without a phone call (113.5 ± 5.3; 69.0 ± 3.8) and higher sympathetic tone (low frequency normalized units (LFnu) 68.5 ± 8.9; high frequency normalized units (HFnu) 27.7 ± 8.7) within 10 min of a phone call than without a phone call (62.9 ± 8.51; 33.5 ± 8.4). Elevated BP and sympathetic tone recovered to baseline levels 30 min after a phone call. CONCLUSIONS: Among physicians on night duty, sympathetic tone and BP might be elevated by clinical events, and these effects last for 30 min.
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Lee et al. (2018) conducted an observational in Physicians on night duty (n=12). Duty event (phone call) vs. Without a duty event (no phone call) was evaluated on Blood pressure and heart rate variability. Night duty events (phone calls) transiently elevated physicians' mean systolic blood pressure (122.4 vs 113.5 mmHg) and sympathetic tone, with recovery to baseline within 30 minutes.
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