Comparative Analysis of Solifenacin Plus Desmopressin Versus Desmopressin Alone in the Treatment of Primary Mono Symptomatic Nocturnal Enuresis

Objectives To compare the efficacy and tolerability of Solifenacin plus Desmopressin and Desmopressin alone in the treatment of primary monosymptomatic nocturnal enuresis (PMNE). Methods A total of 88 children, 5–14 years old, diagnosed with PMNE were enrolled in this randomized control trial (RCT) from June 2017 to June 2020. After informed written consent patients were randomized to one of the two therapeutic groups. Group 1 received one puff of desmopressin nasal spray 1 h before bedtime every night. Group 2 received one pill of solifenacin 5 mg plus one puff of desmopressin nasal spray 1 h before bedtime every night. All patients were evaluated after three months for their response to treatment and drug side effects. Results The mean age in desmopressin alone group and solifenacin plus desmopressin group was 8.1 ± 2.2 (5–14) and 7.9 ± 2.2 (5–14) years respectively (p-value >0.05). In group 2, 37/44 (84.09%) patients achieved complete response after three months of treatment in comparison to group 1 in which 27/44 (61.36%) patients showed complete response (p-value <0.05). In group 1, 8/44 (18.18%) patients developed treatment related side effects whereas in group 2, 12/44 (27.27%) patients developed side effects (p-value >0.05). No case of discontinuation of treatment due to side effects was observed in any of the two groups. The recurrence rate was also significantly lower in group 2 in comparison to group 1 (8.1% vs 33.3%, p-value <0.05). Conclusion Our study demonstrated that the combination of Solifenacin plus Desmopressin is more effective than desmopressin monotherapy in the treatment of PMNE with an acceptable tolerability profile. Level of Evidence Level I.