Key result
Poorer subjective sleep quality links to lower heart rate variability in female nurses.
Why the study?
Poor sleep has been positively associated with nurses' medical errors, but the relationship between sleep quality and heart rate variability among female nurses required investigation.
Does poor sleep quality and shift work associate with impaired heart rate variability among female nurses?
Cross-Sectional (n=393)
No
Does poor sleep quality and shift work associate with impaired heart rate variability among female nurses?
Poor sleep quality is highly prevalent among female nurses and is significantly associated with decreased heart rate variability, suggesting impaired cardiac autonomic regulation.
Answers are grounded in this paper and cite their sources.
Poor sleep quality associated with reduced HRV in female nurses; leaves open whether interventions improve autonomic function.
The quality of nurses’ work has a direct effect on patient health, and poor sleep has been positively associated with nurses’ medical errors. The aim of this study was to investigate the relationship between quality of sleep and heart rate variability (HRV) among female nurses. A descriptive cross-sectional correlational study design was used in January 2014 to study female nurses (n = 393) employed in a medical center in Taiwan. Data were obtained from several questionnaires. HRV was analyzed with five-minute recordings of heart rate signals obtained using a Heart Rater SA-3000P. Approximately 96% of the participants self-reported a poor quality of sleep. Compared to non-shift nurses, significant decreases were found in total power (TP) and low-frequency HRV among shift-work nurses. However, negative correlations were found between sleep quality and HRV, including total power, low frequency, and the low frequency/high frequency ratio (r = −0.425, p < 0.05; r = −0.269, −0.266, p < 0.05). In a stepwise multiple regression analysis, 23.1% of variance in quality of sleep can be explained by TP and heart rate. The sleep quality of female nurses was poor and this affected their autonomic nervous system, which can contribute unfavorable consequences for their health.
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Hsu et al. (2021) conducted a cross-sectional in Female nurses (n=393). Sleep quality (measured by Pittsburgh Sleep Quality Index) vs. Good sleep quality was evaluated on Correlation between subjective sleep quality (PSQI global score) and total power of heart rate variability (r = -0.425, p=<0.01). Poorer subjective sleep quality among female nurses was correlated with decreased total power and low-frequency heart rate variability.
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