ABSTRACT. Objectives. 1) To compare the Mogen and Gomco clamps with regard to pain experienced during neonatal circumcision, and 2) to assess neonatal circumcision pain with and without dorsal penile nerve block (DPNB).Design/Methods. A randomized, controlled, nonblinded clinical trial; 48 healthy, full-term infants were randomized into one of the following four groups: Gomco vs Mogen with (؉) or without (؊) DPNB. DPNB؉ infants were injected with 0.8 mL of 1% lidocaine before circumcision. DPNB؊ infants received no placebo injection. Heart rate, respiratory rate, and oxygen saturation (SaO 2 ) during the procedure were monitored and data transferred to computer files by using the Datalab software system. Crying was recorded on videotape. Pre-and postcircumcision saliva samples for cortisol analysis were collected. Heart rate, respiratory rate, SaO 2 , cortisol changes, and duration of crying were evaluated statistically with two-way analyses of variance and t tests.Results ABBREVIATIONS. HR, heart rate; RR, respiratory rate; Sao 2 , oxygen saturation; DPNB, dorsal penile nerve block; ANOVA, analysis of variance.

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