直接血圧測定値と間接血圧測定値の間に誤差を生じさせる要因についての検討

酒田 宴里

doi:10.24795/nk009_011-020

Objective We analyzed factors affecting the difference between direct and indirect blood pressure measurements. Methods One hundred patients with arterial lines in their radial arteries were studied for the difference between direct and indirect blood pressure measurements. Patient information was obtained from their clinical records. With each measurements, factors causing possible measurement errors were carefully avoided. The patients were divided into four groups according to the range of the difference, and each group was compared for selected factors statistically. Conclusions The difference by fifteen percents or more between direct and indirect blood pressure measurements was observed in about a quarter of the patients (A group of the patients). No statistically significant differences were found between each group in such blood data as RBC, Hb, Ht, PLT, Na, K, WBC, and CRP. The history of anticoagulant therapy, alcohol taking, or smoking does not appear to affect the difference. The frequency of hypertension, and renal function abnormality is significantly higher in the A group patients. In addition, all of these patients were aged 70 or older. Therefore, it is suggested that the factors affecting the difference between direct and indirect blood pressure measurements include hypertension, renal function and aging.

直接血圧測定値と間接血圧測定値の間に誤差を生じさせる要因についての検討

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