Clinical trial NCT02538718: Efficacy and Safety of MgSO4 as Tocolytics Compared to Ritodrine in Preterm Labor
Official title: Efficacy and Safety of MgSO4 as Tocolytics Compared to Ritodrine in Preterm Labor
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Preterm Labor
Lead sponsor: Seoul National University Hospital
Sponsor class: OTHER
First posted: 2015-09-02
Enrollment: 34
Sex: FEMALE
Minimum age (years): 20
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: Ritodrine is the conventional and the only approved tocolytics in Korea(by KFDA), although it was withdrawn from the US market more than 10 years ago. As already known well, ritodrine has many side effects such as tachycardia, hyperglycemia, pulmonary edema and so on. When such complications of ritodrine appears, clinicians consider of using MgSO4 as substitute, but its use is off-the-label yet in Korea. Facing this discrepancy, the investigators want to compare the efficacy and safety of MgSO4 with ritodrine and prove that MgSO4 is not inferior to ritodrine as tocolytics. For the singleton and twin pregnancies between 24+0weeks and 34 completed weeks whose uterine contraction is more than 4 during 20 minutes period with their cervical ripening is more than 25%, the investigators randomise them in Ritodrine group or MgSO4 group. Then, the investigators will check the change of their interval of uterine contraction, degree of pain and the appearance of any side effects or treatment failure sign.


Eligibility criteria: Inclusion Criteria:

* Gestational age of 24+0 to 34+6weeks
* singleton and twin pregnancies
* preterm labor with more than 4 times of uterine contraction for 20 minutes or more than 8 times for 1 hour on external tocography
* cervical dilatation of 0 to 3cm and cervical ripening more than 25%, or cervical length in sonography below 2cm

Exclusion Criteria:

* triplet etc
* preterm premature rupture of membrane
* cervical dilatation more than 3cm
* history of cerclage operation during this pregnancy
* placenta previa
* severe hypertensive diseases in pregnancy
* history of administration of any tocolytics 12 hours before enrollment
* fever more than 38.0'c

Primary outcomes:
measure: Efficacy of MgSO4 as tocolytics : increased interval of uterine contraction, decreased maternal painful sensation, stopping the cervical change
timeFrame: 48 hours later
Secondary outcomes:
Other outcomes:
Locations:
city: Seoul
country: Korea, Republic of
facility: Seoul National University Hospital
city: Seoul
country: Korea, Republic of
facility: Seoul Metropolitan Goverment Seoul National University Boramae Medical Center
Study officials:
affiliation: Seoul National University Hospital
name: Joong Shin Park, M.D., Ph.D.
role: PRINCIPAL_INVESTIGATOR
References:
citation: Wilson A, Hodgetts-Morton VA, Marson EJ, Markland AD, Larkai E, Papadopoulou A, Coomarasamy A, Tobias A, Chou D, Oladapo OT, Price MJ, Morris K, Gallos ID. Tocolytics for delaying preterm birth: a network meta-analysis (0924). Cochrane Database Syst Rev. 2022 Aug 10;8(8):CD014978. doi: 10.1002/14651858.CD014978.pub2.