低血圧麻酔における観血的測定法および非観血的血圧測定法(オシロメトリック法)による血圧測定値の比較, ならびに血流量の変化

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Blood pressure was measured in the radial and the dorsalis pedis artery invasively and by noninvasively oscillometry of the forearm, during anesthesia with N_2O-O_2-sevoflurane (control) and during hypotensive anesthesia with nitroglycerin (TNG) and prostaglandin E_1 (PGE_1) for oral surgery. The changes in blood pressure at these three sites were compared. During control, there was good agreement among the systolic pressure, diastolic pressure, and mean arterial pressure at the three sites. Systolic pressure was high in the dorsalis pedis artery. During TNG-induced hypotension, there was good agreement in the systolic pressure recorded at the three sites, while diastolic pressure and mean arterial pressure showed large variations and differences between the values measured invasively and those measured noninvasively. In particular, there was a 12.0mmHg difference between the diastolic pressure measured in the radial artery and that measured by the forearm cuff. During PGE_1-induced hypotension, the blood pressure was remarkably lower in the dorsalis pedis artery, and the PGE_1-induced arteriolar dilatation may be associated with large differences in systolic pressure depending on the site of measurement. In particular, there was a 16.2mmHg difference between the blood pressure in the dordalis pedis artery and the cuff blood pressure. On the other hand, the correlation coefficients were relatively high for the mean arterial pressure at the three sites ; differences in measurements were minimal and there was good agreement. In addition, changes in blood flow in the common carotid artery and the femoral artery during hypotensive anesthesia induced by TNG and PGE_1 were studied in the dog. During TNG-induced hypotensive anesthesia, blood flow in the femoral artery decreased significantly (mean 67.2% of base line) in all animals. In contrast, blood flow in the common carotid artery was 96.2% of base line, indicating that cerebral blood flow was maintained under these condition. During PGE_1-induced hypotensive anesthesia, the mean femoral artery blood flow decreased to 60.4% of base line in dogs. However, blood flow in the common carotid artery increased to 111.5% of base line, suggesting that cerebral blood flow was well maintained.
福岡歯科大学学会の論文
1996-06-30

低血圧麻酔における観血的測定法および非観血的血圧測定法(オシロメトリック法)による血圧測定値の比較, ならびに血流量の変化

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