Key result
Oscillometric BP agrees poorly with intraradial BP during general anesthesia, showing ~9 mmHg SBP bias.
Why the study?
The accuracy of noninvasive oscillometric blood pressure measurement compared to invasive arterial measurement during surgeries inducing gall cardiac reflex under general anesthesia was unclear.
Does noninvasive oscillometric blood pressure monitoring agree with invasive arterial blood pressure monitoring in patients undergoing cholecyst or bile duct operations under general anesthesia?
Observational (n=78)
Does noninvasive oscillometric blood pressure monitoring agree with invasive arterial blood pressure monitoring in patients undergoing cholecyst or bile duct operations under general anesthesia?
Noninvasive oscillometric blood pressure measurement shows poor agreement with invasive arterial monitoring during surgeries inducing gall cardiac reflex, suggesting it should not be relied upon as a substitute in this setting.
Answers are grounded in this paper and cite their sources.
May warrant caution relying on oscillometric BP in biliary surgery under anesthesia; leaves open need for prospective validation against invasive standards.
OBJECTIVE: The aim of the present study was to comprehensively compare noninvasive and invasive blood pressure (BP) measured by the Philips Intellivue MP50 monitor in surgeries that may induce gall cardiac reflex under general anesthesia. PARTICIPANTS AND METHODS: Seventy-eight patients undergoing cholecyst or bile duct operations under general anesthesia were enrolled in our study. Both invasive (intraradial, femoral, or dorsalis pedis artery) and noninvasive (oscillometric) BP were monitored by the Philips Intellivue MP50 monitor simultaneously. Data were analyzed using Bland-Altman plots. RESULTS: In a supine position during operations, between intraradial and oscillometric measurements, the bias and precision (mmHg) were 9.34±12.98 and 12.47±10.00 for systolic blood pressure (SBP) and 3.26±8.22 and 6.53±5.97 for diastolic blood pressure (DBP), between intrafemoral and oscillometric measurements, the bias and precision (mmHg) were 14.40±14.38 and 16.93±11.28 for SBP and 4.35±9.72 and 7.52±7.54 for DBP, between intradorsalis pedis and oscillometric measurements, the bias and precision (mmHg) were 15.69±14.37 and 16.91±12.91 for SBP and 0.99±7.69 and 5.67±5.27 for DBP. CONCLUSION: The oscillometric BP showed poor agreement with intra-arterial BP in cholecyst or bile duct surgeries that may induce gall cardiac reflex under general anesthesia. Therefore, according to the present data, application of oscillometric BP measured by the Philips Intellivue MP50 monitor in these surgery patients under general anesthesia cannot be recommended generally.
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Meng et al. (2017) conducted an observational in Cholecyst or bile duct operations under general anesthesia (n=78). Noninvasive (oscillometric) blood pressure measurement vs. Invasive (intra-arterial) blood pressure measurement was evaluated on Agreement between noninvasive and invasive blood pressure (bias and precision). Oscillometric BP showed poor agreement with intraradial BP during cholecyst or bile duct surgeries under general anesthesia.
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