Abstract
Background General anesthesia combining with a caudal block (CB) has been commonly performed in pediatric patients undergoing circumcision surgeries. However, some severe complications have been suspected of a caudal block in the combined use. To avoid these issues of a caudal block, this study introduces a novel dorsal penile nerve block (DPNB) via perineum guided by ultrasound as an alternative to a caudal block in pediatric circumcision surgeries. Methods A total of 104 pediatric patients scheduled for circumcision surgeries were involved and randomly divided into 2 groups: the CB group (n=52) and the DPNB group (n=52). A laryngeal mask was inserted followed by induction and maintenance anesthesia of inhaled sevoflurane. In the DPNB group, a dorsal penile nerve block (DPNB) guided by a real-time ultrasonography was performed by a single injection via perineum of 0.25% ropivacaine plus 0.8% lidocaine with total injection volume of 3-5ml. In the CB group, a dose of 0.5 ml/kg was given via the caudal canal following the same general anesthesia with that of Group DPNB. The time to the first analgesic demand after surgery is the key data collected for comparing between the two study groups. Heart rates and respiratory rates changes before and during the surgical procedure, pain score when leaving the PACU, and the time taken for the first micturition after a surgery were also recorded to analyze the differences in analgesic effects between the CB and DPNB groups. Results No significant difference in heart rates and respiratory rates was found between the two groups before and during the surgery. Pain scores were similar before pediatric patients leave the PACU. However, the time taken for the first micturition after a surgery in Group DPNB is shorter than Group CB. The patients in Group DPNB asked for analgesics later than those in Group CB. Additionally, no significant differences in adverse effects were noted between two groups except the numbness of the lower limbs occurring less in Group DPNB. Conclusions The ultrasound-guided dorsal penile nerve block via perineal approach can basically act as a safe and effective alternative to the caudal block in pediatric patients undergoing circumcision surgeries. Clinical Trials identifier is ChiCTR-IPR-15006670. Protocol is available at http://www.chictr.org.cn/showproj.aspx?proj=11319.
Highlights
The circumcision is one of the most common surgical procedures performed in pediatrics, with its rates variously ranging from 42 to 80% in the United States [1] and 7 to 10% for boys in the United Kingdom [2] and nearly 4% in China [3]
This study aims to explore the effectiveness and the safety of ultrasound-guided dorsal penile nerve block via perineal approach for children undergoing circumcision surgeries
Results show that an ultrasound-guided dorsal penile nerve block (DPNB) via perineal approach is similar to the CB technique at the safety and the effectiveness, which can serve as an alternative to the caudal block in circumcision surgeries in pediatric patients
Summary
The circumcision is one of the most common surgical procedures performed in pediatrics, with its rates variously ranging from 42 to 80% in the United States [1] and 7 to 10% for boys in the United Kingdom [2] and nearly 4% in China [3]. An ultrasound-guided dorsal penile nerve block via perineal approach for circumcision surgeries in children was reported recently [9] This method is a potential alternative to the conjunctive method of a caudal block and general anesthesia. Some severe complications have been suspected of a caudal block in the combined use To avoid these issues of a caudal block, this study introduces a novel dorsal penile nerve block (DPNB) via perineum guided by ultrasound as an alternative to a caudal block in pediatric circumcision surgeries. The ultrasound-guided dorsal penile nerve block via perineal approach can basically act as a safe and effective alternative to the caudal block in pediatric patients undergoing circumcision surgeries.
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