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Fig. 1 | BMC Veterinary Research

Fig. 1

From: Experimental study on the effects of isoflurane with and without remifentanil or dexmedetomidine on heart rate variability before and after nociceptive stimulation at different MAC multiples in cats

Fig. 1

STD HR correlation with MAC. STD HR values (1/min) of 7 cats determined with isoflurane alone (group I, triangles), with isoflurane and a constant rate infusion of remifentanil (18 μg/kg/h IV; group IR, diamonds) and with isoflurane and a constant rate infusion of dexmedetomidine (3 μg/kg/h IV; group ID, circles) at different MAC levels (0.75, 1.0 and 1.5 MAC). Prestimulation values were used for correlation analysis. The correlation coefficients for STD HR were − 0.76 (p = < 0.0001) in group I, − 0.56 in group IR (p = 0.0085) and in group ID (p = 0.0142) with increasing MAC level. The slopes of the best-fit linear regression lines were − 1.932 (r2 = 0.4644, p = 0.0007) in group I, − 1.669 (r2 = 0.1975, p = 0.0435) in group IR and − 3.189 (r2 = 0.181, p = 0.0784; not significant) in group ID

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BMC Veterinary Research

ISSN: 1746-6148

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