Changes of cardiac output measured with Vigileo-flo Trac devise after local anesthetic infiltration into the oral mucosa

Background: Though we observed hypotensive episodes during infiltration of local anesthetic into oral mucosa, this hemodynamic changes has not been known for dentists. Aims: We investigated the effects of adrenaline-induced hypotension on hemodynamics to measure changes in cardiac output with Vigileo-flo Trac devise when local anesthetic was infiltrated into the oral submucosa. Materials and Methods: Ten patients (three men, seven women; mean age, 22 years; mean weight, 56.4 kg with an American Society of Anesthesiologists physical status of I who were scheduled for sagittal split ramus osteotomy were included in the present study. We measured systolic arterial pressure, diastolic arterial pressure, mean arterial pressure, pulse rate, blood oxygen saturation, Cardiac output, Cardiac index, Stroke volume, Stroke volume index and Stroke volume variation. Results: At arterial blood pressure reached its minimum, SAP decreased by mean 25.3 mmHg, MAP decreased by mean 16.8 mmHg, DAP decreased by mean 16.8 mmHg and puls rate increased by mean 8 beat/min. There was a slight increase in cardiac output, cardiac index, stroke volume, stroke volume index and stroke volume variation but not a significant difference in five parameters. Conclusion: It was thought that hypotension induced by adrenaline may not affect the cardiac output. However, it is prudent to consider the possibility of hemodynamic changes when infiltrating the oral submucosa with lidocaine containing adrenaline.

Author(s): Kenichi Satoh, Mami Chikuda and Shigeharu Joh

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