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Ambulatory versus inpatient management of severe nausea and vomiting of pregnancy: a randomised control trial with patient preference arm.

Ambulatory versus inpatient management of severe nausea and vomiting of pregnancy: a randomised control trial with patient preference arm.
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Mitchell-Jones N, Farren JA, Tobias A, Bourne T, Bottomley C,


Mitchell-Jones N, Farren JA, Tobias A, Bourne T, Bottomley C, (click to view)

Mitchell-Jones N, Farren JA, Tobias A, Bourne T, Bottomley C,

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BMJ open 2017 12 057(12) e017566 doi 10.1136/bmjopen-2017-017566
Abstract
OBJECTIVE
To determine whether ambulatory (outpatient (OP)) treatment of severe nausea and vomiting of pregnancy (NVP) is as effective as inpatient (IP) care.

DESIGN
Non-blinded randomised control trial (RCT) with patient preference arm.

SETTING
Two multicentre teaching hospitals in London.

PARTICIPANTS
Women less than 20 weeks’ pregnant with severe NVP and associated ketonuria (>1+).

METHODS
Women who agreed to the RCT were randomised via web-based application to either ambulatory or IP treatment. Women who declined randomisation underwent the treatment of their choice in the patient preference trial (PPT) arm. Treatment protocols, data collection and follow-up were the same for all participants.

MAIN OUTCOME MEASURES
Primary outcome was reduction in Pregnancy Unique Quantification of Emesis (PUQE) score 48 hours after starting treatment. Secondary outcome measures were duration of treatment, improvement in symptom scores and ketonuria at 48 hours, reattendances within 7 days of discharge and comparison of symptoms at 7 days postdischarge.

RESULTS
152/174 eligible women agreed to participate with 77/152 (51%) recruited to the RCT and 75/152 (49%) to the PPT.Patients were initially compared in four groups (randomised IP, randomised OP, non-randomised IP and non-randomised OP). Comprehensive cohort analysis of participants in the randomised group (RCT) and non-randomised group (PPT) did not demonstrate any differences in patient demographics or baseline clinical characteristics. Pooled analysis of IP versus OP groups showed no difference in reduction in PUQE score at 48 hours (p=0.86). There was no difference in change in eating score (p=0.69), drinking score (p=0.77), well-being rating (p=0.64) or reduction in ketonuria (p=0.47) at 48 hours, with no difference in duration of index treatment episode (p=0.83) or reattendances within 7 days (p=0.52).

CONCLUSIONS
Ambulatory management is an effective direct alternative to IP management of severe NVP. The trial also demonstrated that many women requiring treatment for severe NVP have strong preferences regarding treatment setting, which may need to be considered by care providers, especially given the psychological impact of severe NVP.

TRIAL REGISTRATION NUMBER
http://www.isrctn.com/ISRCTN24659467 (March 2014).

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