Peripheral Perfusion Index (PPI) as Monitor During Deliberate Hypotensive Anesthesia

The Use of Peripheral Perfusion Index as a Predictor for Patient's Response to Deliberate Hypotension During Functional Endoscopic Sinus Surgery A Prospective Observational Study

Hypotensive anesthesia is effective in reducing the intraoperative blood loss. The risk of hypoperfusion of vital organs continues to be a concern. An adequate monitoring of tissue perfusion and oxygenation is crucial issue. Peripheral Perfusion Index (PPI) as a noninvasive new monitoring, can reflect the peripheral perfusion dynamics.

This study is designed to explore the behaviour and trend of PPI during nitroglycerine induced deliberate hypotensive anesthesia in adult patients undergoing functional endoscopic sinus surgery (FESS).

Inclusion Criteria:

• Patients, aged from 18-50 years, ASA physical status I and II, undergoing functional endoscopic sinus surgery (FESS) under deliberate hypotensive anesthesia

Exclusion Criteria:

• Patients with systemic hypertension, cardiovascular disease, cerebrovascular insufficiency, coagulation defects, renal or hepatic insufficiency, and hypersensitivity to the study drugs will be excluded from the study. Patients receiving vasoactive drugs or beta blockers will be also excluded from the study.