Correlation Between Baseline Perfusion Index  and Post-Spinal Hypotension in Patients Undregoing Orthopaedic Surgery

Muhamamd Abuzar Shakeel; Shehbaz Afsar Khan; Bilal Yasin; Syed Qasim Ali  Shah; Hajra Maryam Muhammad; Waqas Tariq

doi:10.51253/pafmj.v75iSUPPL-6.8682

Authors

Muhamamd Abuzar Shakeel Department of Anesthesia, Combined Military Hospital Rawalpindi/National University of Medical Sciences (NUMS) Pakistan
Shehbaz Afsar Khan Department of Anesthesia, Combined Military Hospital Abbottabad/National University of Medical Sciences (NUMS) Pakistan
Bilal Yasin Department of Anesthesia, Combined Military Hospital Okara/National University of Medical Sciences (NUMS) Pakistan
Syed Qasim Ali Shah Department of Anesthesia, Combined Military Hospital Rawalpindi/National University of Medical Sciences (NUMS) Pakistan
Hajra Maryam Muhammad Combined Military Hospital Rawalpindi/National University of Medical Sciences (NUMS) Pakistan
Waqas Tariq Department of Anesthesia, Combined Military Hospital Rawalpindi/National University of Medical Sciences (NUMS) Pakistan

DOI:

https://doi.org/10.51253/pafmj.v75iSUPPL-6.8682

Abstract

Objective: To determine the correlation between baseline perfusion index and post-spinal hypotension.

Study Design: Prospective longitudinal study

Place and Duration of Study: Combined Military Hospital, Rawalpindi from April to July, 2021.

Methodology: Male and female ASA I and II adult patients undergoing elective orthopaedic surgery under spinal anaesthesia were included in the study. Non-randomized, consecutive sampling was used. Brachial Non Invasive Blood Pressure (NIBP) was measured before administration of spinal anaesthesia and immediately post-spinal plus 2 additional readings at 3 minute intervals. Lowest post-spinal NIBP reading for a subject was considered in determining occurrence of hypotension. Hypotension was defined as either a drop of systolic B.P. to 100 mmHg or lower, or a drop to 80% baseline or lower.

Results: Of the 371 subjects, 189(50.9%) were male. Mean age was 47.19±18.93 years. 203(54.7%) subjects were ASA I. Most frequently performed procedure was Knee Arthroscopy (n=54 [14.6%]). Mean Perfusion Index at baseline was 3.52±2.05 (from 0.3 to 7.7). At baseline, mean systolic B.P. was 135.53±17.12 mmHg, mean diastolic B.P. was 76.10 ±12.27 mmHg, and mean MAP was 95.92±10.09 mmHg. Post-spinal mean values were 112.37±17.24 mmHg for systolic, 68.19±11.65 mmHg for diastolic, and 82.60±10.85 mmHg for MAP, respectively. Overall, 201(54.2%) of the subjects exhibited post-spinal hypotension. Correlation between PI and Post-spinal Hypotension revealed a statistically significant association (p =0.043).

Conclusion: A higher PI score at baseline could have predictive value for development of post-spinal hypotension in orthopaedic procedures. Further studies are needed to determine utility of PI as a predictor of ..

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