Prediction of Hypotension Using Perfusion Index Following Spinal Anesthesia

Launched by ANKARA CITY HOSPITAL BILKENT · May 19, 2024

Keywords

ClinConnect Summary

In orthopedic lower extremity surgeries, spinal anesthesia is a preferred method of anesthesia compared to general anesthesia. Spinal anesthesia may cause severe hypotension and adverse effects in the patient due to pharmacologic sympathectomy. Especially elderly patients and patients with comorbid diseases are at risk. Hypoperfusion and vasopressor drugs to be used in treatment may lead to adverse effects.

Perfusion index is calculated as the ratio non-pulsatile to pulsatile flow in peripheral capillary blood flow. Perfusion index is a non-invasive method that provides insight into the dy...

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Eligibility criteria

• Inclusion Criteria:
• • American Society of Anesthesiologists (ASA) I-II-III physical status
• • patients planned for effective lower extremity surgery in the supine position
• • age \>18 years
• Exclusion Criteria:
• • Known cardiac abnormalities (left ventricular ejection fraction \<50% or decompensated heart failure, heart block, arrhythmia)
• • uncontrolled hypertension
• • hyperthyroidism
• • monoamine oxidase inhibitor use
• • chronic beta-blocker or digoxin therapy
• • severe arrhythmia
• • peripheral arterial disease
• • history of glaucoma
• • hepatic cell failure
• • renal failure
• • local anesthetic allergy
• • contraindications for spinal anesthesia