Clinical trial NCT01572805: Evaluation of Melatonin's Effect on Pain and Blood Loss After Cesarean Section
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE1
PHASE2
Conditions: Post Partum Haemorrhage in Patients Undergoing Cesarean Section
Keywords: Post partum haemorrhage
Cesarean
Pain
Lead sponsor: Qazvin University Of Medical Sciences
Sponsor class: OTHER
First posted: 2012-04-06
Enrollment: 120
Sex: FEMALE
Minimum age (years): 18
Maximum age (years): 42
Standard ages: ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: The purpose of this study is to assess the effect of melatonin on pain and amount of blood loss after cesarean delivery one hundred twenty women with singleton term pregnancy undergoing elective or emergency lower segment cesarean section under spinal anesthesia were included in this study. The patients were randomly allocated to one of three groups of 40 each to receive sublingual 3 mg melatonin or 6 mg melatonin or placebo before spinal of anesthesia . In all patients 20 IU syntocinon which dissolved in 0.5liter of lactated Ringer's solution) at the rate of 500 ml over a 15 minutes period, immediately after delivery of the neonate was infused . Time to first requirement of analgesic supplement, Hemodynamic variables,will be recorded.Patients were instructed preoperatively in the use of the verbal rating scale (VRS) from 0 to 10 (0no pain, 10maximum imaginable pain) for pain assessment. If the VRS exceeded four and the patient requested a supplement analgesic, diclofenac Na supp 100 mg was to be given for post-operative pain relief as needed . For breakthrough pain(VRS \>4) if time of administration of diclofenac Na less than 8h,Pethidine 25 mg IV was given. For determination of blood loss ,change in hemoglobin levels, need for additional oxytocics and ,the volume of blood in the suction bottle was measured, blood soaked sponges. Hemoglobin values were determined both before surgery and 12 h following surgery


Eligibility criteria: Inclusion Criteria:

* pregnant women at term (37-40 wks) gestation scheduled for either elective or emergency lower segment cesarean section

Exclusion Criteria:

* women with any risk factor associated with an increased risk of postpartum hemorrhage were excluded i.e. multiple gestation, antepartum hemorrhage,poly-hydramnios, two or more previous cesarean sections and/or a history of previous rupture uterus
* current or previous history of significant disease including heart disease, liver, renal disorders ,anemia (Hb8 g%)or known coagulopathy

Primary outcomes:
measure: Time to first requirement of analgesic supplement
timeFrame: Time to first requirement of analgesic supplement within 24 hours after intratechal injection
measure: amount of blood loss after cesarean delivery
timeFrame: during surgery
Secondary outcomes:
measure: hemodynamic variables
timeFrame: 5min before the intrathecal injection,and at 2, 4, 6, 10, 15,20 min after the injection
Other outcomes:
Locations:
city: Qazvin
country: Iran, Islamic Republic of
facility: Qazvin Medical Science University
Study officials:
References:
citation: Khezri MB, Reihany MD, Dabbaghi Ghaleh T, Mohammadi N. Effect of Melatonin on Blood Loss After Cesarean Section: A Prospective Randomized Double-Blind Trial. J Obstet Gynaecol India. 2019 Oct;69(5):436-443. doi: 10.1007/s13224-019-01205-7. Epub 2019 Apr 24.