ORIGINAL ARTICLE
Year : 2017  |  Volume : 11  |  Issue : 4  |  Page : 449-453

Ultrasound assessment of cranial spread during caudal blockade in children: Effect of different volumes of local anesthetic


1 Department of Anesthesia, AIIMS, Patna, India
2 Department of Community and Family Medicine, AIIMS, Patna, India
3 Department of Anesthesia, AIIMS, New Delhi, India
4 Department of Pediatric Surgery, AIIMS, Patna, India

Correspondence Address:
Chandni Sinha
Department of Anesthesia, AIIMS, Patna
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/sja.SJA_284_17

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Background: Ultrasound-guided caudal block injection is a simple, safe, and effective method of anesthesia/analgesia in pediatric patients. The volume of caudal drug required has always been a matter of debate. Materials and Methods: This present prospective, randomized, double-blinded study aimed to measure extent of the cranial spread of caudally administered levobupivacaine in Indian children by means of real-time ultrasonography. Ninety American Society of Anesthesiologists I/II children scheduled for urogenital surgeries were enrolled in this trial. Anesthesia and caudal analgesia were administered in a standardized manner in the patients. The patients received 0.5 ml/kg or 1 ml/kg or 1.25 ml/kg of 0.125% levobupivacaine according to the group allocated. Cranial spread of local anesthetic was noted using ultrasound. Results: There was no difference in the spread when related to age, sex, weight, or body mass index. A significant difference of ultrasound-assessed cranial spread of the local anesthetic was found between Group 1 (0.5 ml/kg) with both Group 2 (1 ml/kg) (P = 0.001) and with Group 3 (1.125 ml/kg) (P < 0.001) but there is no significant difference between Group 2 and Group 3 (P = 0.451) revealing that spinal level spread is only different between 0.5 ml/kg and 1 ml/kg of local anesthetic. Conclusion: In conclusion, the ultrasound assessment of local anesthetic spread after a caudal block showed that cranial spread of the block is dependent on the volume injected into the caudal space. Since there was no difference between 1 ml/kg and 1.25 ml/kg, to achieve a dermatomal blockade up to thoracic level, we might have to increase the dose beyond 1.25 ml/kg, keeping the toxic dose in mind.


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