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Comparison of two species‐specific oscillometric blood pressure monitors with direct blood pressure measurement in anesthetized cats
Author(s) -
Cerejo Sofia A.,
TeixeiraNeto Francisco J.,
Garofalo Natache A.,
Rodrigues Jéssica C.,
CeleitaRodríguez Nathalia,
LagosCarvajal Angie P.
Publication year - 2017
Publication title -
journal of veterinary emergency and critical care
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.886
H-Index - 47
eISSN - 1476-4431
pISSN - 1479-3261
DOI - 10.1111/vec.12623
Subject(s) - medicine , blood pressure , isoflurane , cuff , anesthesia , cats , mean arterial pressure , arterial line , heart rate , surgery
Objective To compare the performance of 2 species‐specific oscillometric blood pressure (OBP) monitors (petMAP classic and petMAP graphic ) with direct blood pressure measurement in anesthetized cats. Design Prospective, experimental study. Setting Veterinary teaching hospital. Animals Eight adult cats (3.2–5.5 kg). Interventions During isoflurane anesthesia, OBP cuffs were placed on the thoracic limb and on the base of the tail while invasive blood pressure (IBP) was recorded from a dorsal pedal artery. End‐tidal isoflurane concentrations, with or without intravenous dopamine ( n = 8), norepinephrine ( n = 1), or phenylephrine ( n = 1) were adjusted to change invasive mean arterial pressure (MAP) between 40 to 100 mm Hg. Data were analyzed by the Bland‐Altman method and 4‐quadrant plots. Measurements and Main Results Mean biases and limits of agreement (LOA: ± 1.96 SD) (mm Hg) recorded between the petMAP classic (thoracic limb) and IBP for systolic arterial pressure (SAP), diastolic arterial pressure (DAP), and MAP were 4.2 ± 28.5, −6.1 ± 13.2, and −1.9 ± 14.6, respectively; mean biases and LOA (mm Hg) recorded with the tail cuff were 7.2 ± 31.3 (SAP), −6.1 ± 11.6 (DAP), and −1.1 ± 11.7 (MAP). Mean biases and LOA (mm Hg) between petMAP graphic (thoracic limb) and IBP were 7.7 ± 27.0 (SAP), −4.3 ± 11.5 (DAP), 0.2 ± 13.0 (MAP); values recorded with the tail cuff were 10.9 ± 29.6 (SAP), −4.4 ± 11.7 (DAP), and −0.1 ± 12.1 (MAP). Concordance rates after excluding arterial pressure changes ≤ 5 mm Hg was ≥ 93% for both devices. Conclusions Although both OBP monitors provide unacceptable SAP estimations, MAP values derived from both monitors and DAP measured by the petMAP graphic result in acceptable agreement with the reference method according to the Association for the Advancement of Medical Instrumentation (mean bias ≤ 5 mm Hg with LOA ≤ ± 16 mm Hg). Both monitors provide acceptable trending ability for SAP, DAP, and MAP.