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Randomized Controlled Trial
Transdermal clonidine in the treatment of severe hyperemesis. A pilot randomised control trial: CLONEMESI.
- A Maina, M Arrotta, L Cicogna, V Donvito, M Mischinelli, T Todros, and S Rivolo.
- Dipartimento di Medicina, Servizio di Medicina Interna, Ospedale Sant'Anna, AOU Città della Salute e della Scienza, Turin, Italy.
- BJOG. 2014 Nov 1;121(12):1556-62.
ObjectiveTo study the efficacy of transdermal clonidine in the treatment of severe refractory hyperemesis gravidarum (HG), the most severe illness of pregnancy.DesignThe study had a randomised, double -blind, placebo-controlled, cross-over design (RCT).SettingSingle tertiary referral hospital after admission of patients.SampleTwelve women of gestational age 6-12 weeks and a major grade of HG clinical severity who were unresponsive to standard antiemetic treatment.MethodsThe patients were randomly treated with and without the active drug (5 mg patch) for two consecutive periods of 5 days. The patients were allocated to a random list to receive first placebo and then active drug or the other way round. Other antiemetic drugs were administered on a scheduled or as-needed basis. All patients received intravenous hydration and thiamine supplementation.Main Outcome MeasuresPregnancy Unique Quantification of Emesis (PUQE) and visual analog scale (VAS) clinical scores, positive morning urine ketonuria, number of doses of standard antiemetic drugs required, and number of days off intravenous therapy were compared in the two periods.ResultsTransdermal clonidine led to a significantly greater improvement compared with placebo of the primary (PUQE score P = 0.026 CI 0.43-3.24; VAS score P = 0.010 CI 2.17-12.83) and secondary outcome measures. A reduction of blood pressure was reported for systolic 6 mmHg P = 0.01 and diastolic 3 mmHg P = 0.055.ConclusionsThis preliminary RCT demonstrates the efficacy of transdermal clonidine in the treatment of severe HG, leading to a significant reduction of symptoms and reducing the need for other supportive measures and medications.© 2014 Royal College of Obstetricians and Gynaecologists.
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