• Int J Obstet Anesth · May 2024

    Observational Study

    Observational study of peripheral skin temperature changes following spinal anaesthesia for caesarean birth.

    • L Kessack, G Davenport, C McGlennan, and J H Bamber.
    • Department of Anaesthesia, Rosie Hospital, Cambridge University Hospitals NHS FT, Cambridge, UK. Electronic address: Laura.kessack@nhs.net.
    • Int J Obstet Anesth. 2024 May 1; 58: 103970103970.

    BackgroundSpinal anaesthesia is widely used in obstetric anaesthesia practice but there is limited knowledge about the development of sympathetic blockade following spinal anaesthesia for caesarean birth. This study investigated the characteristics of sympathetic blockade by measuring peripheral skin temperature changes in the feet of patients given spinal anaesthesia for elective caesarean birth.MethodsA prospective observational study was conducted involving 60 eligible parturients scheduled for elective caesarean birth with spinal anaesthesia. Skin temperature probes were attached to the dorsum of both feet, and temperature measurements were recorded every minute. The dose of spinal anaesthesia given, and other relevant patient data, were collected.ResultsAll participants had successful spinal anaesthesia. Following spinal anaesthesia, a sustained rise in skin temperature of both feet was observed, indicating the presence of sympathetic blockade. The maximum rate of temperature increase occurred between 6 and 15 min after the intrathecal injection and plateaued from 22 min after the injection. Control participants did not show any changes in foot temperature.ConclusionsThis study demonstrates that successful spinal anaesthesia for caesarean birth results in a consistent and reliable rise in skin temperature of the feet that is evident after six minutes from intrathecal injection. The observed temperature changes provide indirect objective evidence of bilateral sympathetic blockade. Measurement of feet skin temperatures may serve as an additional objective indicator of successful spinal anaesthesia, along with tests of lower limb motor block and sensory block height. These findings contribute to the understanding of sympathetic blockade during spinal anaesthesia.Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.

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