Differential sensory block during labour epidural analgesia: a prospective observational study to investigate the relationship of lower and upper sensory block levels to cold, pinprick, and light touch
Authors' conclusion
We observed two sensory block levels to ice and pinprick.
Study context
- Population
- Patients requesting labour epidural analgesia (catheter at L2/L3 or L3/L4; programmed intermittent epidural bolus plus PCEA)
- Participants
- 30 patients
- Outcome
- USBL and LSBL to cold and pinprick and sensory block level to light touch
- Follow-up
- 140 min after the loading dose
Main finding
As reported in the abstract
Sensory block levels · 140 min after loading dose
- Upper sensory block level (USBL) to ice, median [IQR]
- T7 [T7-T6]
- Lower sensory block level (LSBL) to ice, median [IQR]
- T9 [T10-T8]
- USBL to pinprick, median [IQR]
- T8 [T10-T6]
- LSBL to pinprick, median [IQR]
- T10 [T12-T10]
- Correlation USBL ice vs pinprick (Spearman)
- 0.57
- Correlation LSBL ice vs pinprick (Spearman)
- 0.52
Observational data: associations, not effects.
Original publication
Differential sensory block during labour epidural analgesia: a prospective observational study to investigate the relationship of lower and upper sensory block levels to cold, pinprick, and light touch. Can J Anaesth. Published 30 January 2024. doi:10.
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