Abstract
Background: Heart rate variability (HRV) analysis is a relevant indicator of autonomic nervous system function over the cardiovascular system. The usual way to measure this variability is from the electrocardiogram (ECG).
Objective: To assess the validity of HRV measurements obtained from a heart rate monitor (HRM) Polar® V800 in critically ill adult subjects.
Materials and Methods: A prospective, repeated measures, observational study was conducted in two in the Chilean intensive care units. Twenty-one different HRV variables were simultaneously assessed using a Polar® V800 HRM and an ECG Mortara® H3 Holter device. The data was collected from the clinical record and physical examinations. The evaluations were conducted for 10 minutes at a time and simultaneously, during which the subjects had to remain supine and at rest. The sampling frequency was 1000 Hz, providing a temporal resolution of 1 millisecond for each RR period.
Results: Thirty adult subjects were included with an average age of 33.63 ± 8.91 years. When comparing both HRV assessment methods, only 3 variables showed statistically significant differences (p ≤ 0.05). As well, the correlations showed 4 strong and 17 near-perfect associations, which were positive and statistically significant (p ≤ 0.001). In addition, intraclass correlation coefficients (between 0.744 and 1) and bias determined using the Bland-Altman method found both methods to be concordant.
Conclusion: The Polar® V800 monitor is a valid tool for assessing HRV in critically ill adult subjects.
Graphical Abstract
[http://dx.doi.org/10.1016/j.biopsycho.2013.02.013] [PMID: 23466587]
[http://dx.doi.org/10.1093/cvr/4.2.160] [PMID: 4192616]
[http://dx.doi.org/10.1016/S0165-0327(00)00338-4] [PMID: 11163422]
[http://dx.doi.org/10.1016/j.ccc.2007.10.003] [PMID: 18241783]
[http://dx.doi.org/10.1007/s00134-013-2991-z] [PMID: 23793889]
[http://dx.doi.org/10.1097/TA.0b013e31821858e6] [PMID: 21817974]
[http://dx.doi.org/10.1006/jsre.1996.0214] [PMID: 8661164]
[http://dx.doi.org/10.1186/cc8132] [PMID: 20017889]
[http://dx.doi.org/10.1249/01.mss.0000218135.79476.9c] [PMID: 16672842]
[http://dx.doi.org/10.1249/MSS.0b013e31818cb278] [PMID: 19092709]
[http://dx.doi.org/10.1007/s00421-015-3303-9] [PMID: 26708360]
[http://dx.doi.org/10.1111/cpf.12320] [PMID: 26749070]
[http://dx.doi.org/10.1016/j.physbeh.2009.05.018] [PMID: 19497332]
[http://dx.doi.org/10.1016/S0167-5273(02)00057-8] [PMID: 12104056]
[http://dx.doi.org/10.1136/adc.83.2.179] [PMID: 10906034]
[http://dx.doi.org/10.3390/s22176536]
[http://dx.doi.org/10.1249/MSS.0b013e318184a4b1] [PMID: 19092682]
[http://dx.doi.org/10.1007/s00421-008-0742-6] [PMID: 18427831]
[http://dx.doi.org/10.1111/j.1542-474X.2001.tb00080.x] [PMID: 11174857]
[http://dx.doi.org/10.1097/00075198-200208000-00007] [PMID: 12386491]
[http://dx.doi.org/10.1371/journal.pone.0118308] [PMID: 25822720]
[PMID: 22755301]
[http://dx.doi.org/10.1097/01.CCM.0000178181.91250.99] [PMID: 16148471]