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KMID : 0356920120630060515
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Korean Journal of Anesthesiology
2012 Volume.63 No. 6 p.515 ~ p.520
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Ankle-brachial blood pressure differences in the beach-chair position of the shoulder surgery
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Choi Jae-Chan
Lee Jong-Hyuk
Lee Young-Don
Kim Soon-Yul
Chang Sei-Jin
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Abstract
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Background: During shoulder surgery, blood pressure is frequently measured at the ankle. Anesthetic complications may result when ankle blood pressure is higher than brachial blood pressure and anesthesiologists misinterpret ankle blood pressure as brachial blood pressure. Therefore, we investigated whether ankle blood pressure is significantly higher than brachial blood pressure before anesthesia induction, during induction, after tracheal intubation, before beach chair position, and in the beach chair position.
Methods: Thirty patients requiring general anesthesia for shoulder surgery were included in this study. Ankle and brachial blood pressure were simultaneously measured before induction, during induction, after intubation, before beach chair position, and in the beach chair position.
Results: Ankle blood pressure was higher than brachial blood pressure before induction, during induction, after intubation, before beach chair position, and in the beach chair position. Ankle-brachial blood pressure differences in the beach chair condition were much higher than in four other conditions. The correlation coefficient between mean ankle-brachial blood pressure differences before the beach chair position and mean ankle-brachial blood pressure differences in the beach chair position was 0.616. Brachial systolic blood pressure could be predicted by regression equations (R2 = 0.306-0.771).
Conclusions: These results suggest that anesthesiologists should consider these ankle-brachial blood pressure differences when monitoring anesthesia in the beach chair position.
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KEYWORD
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Ankle blood pressure, Ankle-brachial blood pressure index, Beach chair position, Blood pressure, Brachial blood pressure, Shoulder surgery
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