Factors effecting Hypotension in Elderly after received Spinal Anesthesia, Udonthani Hospital 2015

Abstract

Objective: This retrospective descriptive study aimed to determine factors effecting hypotension in elderly after received spinal anesthesia, to analyze the relation between sex, age, type of operation, operation time, underlying disease, ASA class, pre – load fluid, amount of anesthetic agent.

Methods: Purposive sampling was done and 216 patients who older than 65 years old that had received spinal anesthesia in Udonthani hospital were recruited. The tools that used to study this research were a retrospective data sheet. Anesthetist data was recorded during the 1^st June - 31^st July 2014. The data was analyzed by descriptive, calculated as a percentage, mean, standard deviation of anxiety and Chi-square test on SPSS program.

Result: Most of them were male (60.6%), age between 65 – 93 years old (mean 72.30). Mean operation time was 55.17 minute with mean pre – load fluid was 367.13 ml. Mean amount of anesthetic agent (0.5% Marcaine) was 2.432 ml. Underlying hypertension was high prevalence in this group (38.4%). There were classified in class II 52.8%. One – third of the operation type was debridement.

Factors effecting hypotension in this study were female, operation time more than 60 minutes, age more than 80 years old, ASA class III and type of operation was appendectomy, these factors was statistically significant (p – value <0.05).

Conclusion: sex, age, type of operation, operation time and ASA class related to hypotension in elderly after received spinal anesthesia.