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Test Dose in Pediatric epidural




Epidural Test dose are as important in Children as in adults.
However since epidural block always done under general anesthesia, GA decrease test dose sensitivity.
For example during halothane anesthesia administration of IV adrenaline causes hypertension and bradycardia not tachycardia. Prior administration of Atropine 0.01mg/kg increase the reliability of test dose during halothane anesthesia.
During Sevoflurane anesthesia, the reliability of IV adrenaline test dose 0.01mg/kg is 100% using the 10 beat per minute increase in HR as definition of positive test dose. Atropine is not needed to achieve this sensitivity.
There is no data regarding test dose during isoflurane  or desflurane anesthesia  
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