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Short-term heart-rate variability in healthy small and medium-sized dogs over a five-minute measuring period

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Clinical characteristics and values of time and frequency domains in dogs grouped by age as under and over six years of age, expressed as mean ± SD for normally distributed data and median (IQR) for non-normally distributed data

HRV Dogs ≤ 6 years (n = 41) Dogs > 6 years (n = 37)
Age (years) 4 ± 1.55 10.1 ± 2.64
BW (kg) 8.06 ± 4.9 8.82 ± 3.87
Sex (M/F) 22/19 17/21
Mean RR 475 (394–568) 488 (416–602)
Mean HR 130 (108–154) 122 (101–142)
SDNN 60.3 (38.4–84.9) 65.9 (37.7–87.8)
rMSSD 54.2 (32.2–120) 67 (31.6–124.1)
pNN50 26.7 (8.9–62.6) 29.6 (9.3–61.2)
TP (ms2) 1,885 (971–3,752) 2,029 (917–3,350)
VLF (ms2) 186 (94.5–627) 155 (52.5–284.5)
LF (ms2) 653 (523–1,111) 586 (420–1,137)
HF (ms2) 513 (256–1,858) 865 (338.5–2,034.5)
LF/HF 1.1 (0.62–2) 0.96 (0.4–1.7)

Clinical characteristics and values of time and frequency domains for the total study group and 95% confidence interval expressed as mean ± SD for normally distributed data and median (IQR) for non-normally distributed data

HRV Total (n = 79) 95% CI
Age 7 ± 3.7 6–7.73
BW (kg) 8.42 ± 4.45 7.4–9.4
Sex (M/F) 39/40 -
Mean RR 477 (404–576) 471–519
Mean HR 124 (103–146) 120–132
SDNN 61.9 (38.5–87.8) 60–77.1
rMSSD 56.6 (33.2–121) 69.9–102.5
pNN50 27.6 (9.44–60.38) 29.2–41.7
TP (ms2) 1,898 (947–3,641) 2,037–3,851
VLF (ms2) 164 (70.2–517.7) 274–618
LF (ms2) 652 (457–1,116) 714–1,113
HF (ms2) 635 (284–1,952) 932–2,385
LF/HF 0.99 (0.48–1.95) 1.07–1.68

Clinical characteristics and values of time and frequency domains for different groups distributed by sex, expressed as mean ± SD for normally distributed data and median (IQR) for non-normally distributed data

HRV Males (n = 39) Females (n = 40)
Age (years) 7.06 ± 3.9 6.89 ± 4.1
BW (kg) 8.9 ± 4.8 7.9 ± 3.6
Mean RR 513 (413–599) 449 (389–527)
Mean HR 117 (103–139) 132 (108–151)
SDNN 65.9 (38.1–103.5) 58 (38.7–82.1)
RMSSD 73 (29.9–142.8) 52.6 (34.4–116.1)
pNN50 36.2 (8–69.5) 25.2 (10.5–55.8)
TP (ms2) 2,430 (966–4,441) 1,647 (940–2,483)
VLF (ms2) 164 (73–526) 165 (62–437)
LF (ms2) 657 (486–1,108) 609 (420–1,142)
HF (ms2) 865 (271–2,980) 575 (306–1,235)
LF/HF 0.96 (0.3–1.7) 1.1 (0.6–2)
eISSN:
2450-8608
Langue:
Anglais
Périodicité:
4 fois par an
Sujets de la revue:
Life Sciences, Molecular Biology, Microbiology and Virology, other, Medicine, Veterinary Medicine