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Effect of Melatonin on Blood Loss After Cesarean Section: A Prospective Randomized Double-Blind Trial.

ABSTRACT: Background and Objectives:The similarities between the melatonin and oxytocin signaling could lead to increased contractility of myometrium. We designed this randomized double-blind, placebo-controlled trial to evaluate the efficacy of melatonin in reduction of blood loss during and after the lower segment cesarean section. Methods:One hundred and twenty patients who had been scheduled for cesarean section under spinal anesthesia were enrolled in the study. We randomly allocated them to one of the three following groups to receive either melatonin 3 mg (M3), melatonin 6 mg (M6), or placebo (P) sublingually 20 min before the surgery. The hemoglobin levels before and 12 h after surgery, the mean weight of the materials used in the operation time, the need for additional oxytocic therapy, and the incidence of adverse effects were probed and recorded. Results:There was a significant difference between the group M6 and both M3 and P in the mean weight of the materials (p?=?.024 and .041, respectively) and between M6 and P groups in terms of mean decrease in hemoglobin during 12 h after cesarean section (p?=?.029). Conclusion:Using 6 mg melatonin, sublingually, as a premedication in patients undergoing cesarean section with spinal anesthesia could statistically reduce the amount of blood loss after the lower segment cesarean section, although it may not be clinically meaningful.Registration number: ACTRN12612000117819 and ClinicalTrials.gov Identifier: NCT01572805.

SUBMITTER: Khezri MB

PROVIDER: S-EPMC6765044 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

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Effect of Melatonin on Blood Loss After Cesarean Section: A Prospective Randomized Double-Blind Trial.

Khezri Marzieh Beigom MB Reihany Morteza Delkhosh MD Dabbaghi Ghaleh Talaat T Mohammadi Navid N

Journal of obstetrics and gynaecology of India 20190424 5

<h4>Background and objectives</h4>The similarities between the melatonin and oxytocin signaling could lead to increased contractility of myometrium. We designed this randomized double-blind, placebo-controlled trial to evaluate the efficacy of melatonin in reduction of blood loss during and after the lower segment cesarean section.<h4>Methods</h4>One hundred and twenty patients who had been scheduled for cesarean section under spinal anesthesia were enrolled in the study. We randomly allocated t ...[more]

PMID: 31598047

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Project description:BackgroundThe study aimed to investigate whether prophylactic use of glycopyrrolate decreases the vasopressor requirements to prevent hypotension following spinal anesthesia during non-elective cesarean section.MethodIn this double-blind randomized clinical trial, 258 patients undergoing non-elective cesarean section were randomly assigned (1:1) to receive intravenous 0.2 mg glycopyrrolate or normal saline (placebo) before spinal anesthesia. The primary outcome was phenylephrine equivalent needed intraoperatively. Secondary outcomes included incidences of maternal hypotension, reactive hypertension, bradycardia, need for atropine, tachycardia, intraoperative nausea/vomiting, shivering, pruritus, dry mouth, dizziness; neonatal APGAR score at 1 min and 5 min, neonatal resuscitation needed, NICU admission and neonatal death.ResultsThree patients withdrew from the study due to failed spinal anesthesia. 128 patients in the glycopyrrolate group and 127 patients in the placebo group were analyzed. The mean phenylephrine equivalent needed was 1108.96 μg in the glycopyrrolate group and 1103.64 μg in the placebo group (mean difference, 5.32 μg [95% CI - 67.97 to 78.62]; P = 0.88). Hypotension occurred in 38 patients (30%) in the glycopyrrolate group as compared with 49 patients (39%) in the placebo group (P = 0.13). Tachycardia was reported in 70% of the participants in the glycopyrrolate group and 57% of those in the placebo group (P = 0.04). No statistically significant difference was noted in hypotensive episodes > 1, reactive hypertension, bradycardia, need for atropine, nausea, vomiting, shivering, and dry mouth between the two groups. Neonatal outcomes were similar in the two groups.ConclusionProphylactic use of glycopyrrolate does not decrease the requirements of vasopressor to prevent hypotension in non-elective cesarean section under spinal anesthesia.Trial registrationRegistration number: NCT04401345. Date of registration: 26/05/2020. Website: https://clinicaltrials.gov.

Project description:BackgroundThe efficacy and safety of spinal anesthesia by intrathecal dexmedetomidine (DEX) for parturients undergoing cesarean section are still lack of evidence. This aim of our study was to evaluate the efficacy and safety of intrathecal DEX for parturients undergoing cesarean section to provide more data evidence for intrathecal applications.MethodsThree hundred parturients undergoing cesarean section under spinal anesthesia were randomly assigned into three groups: group B: 9.0 mg (1.2 ml) of 0.75% bupivacaine with saline (1 ml); group FB: 9.0 mg (1.2 ml) of 0.75% bupivacaine with 20 μg of fentanyl (1 ml); group DB: 9.0 mg (1.2 ml) of 0.75% bupivacaine with 5 μg of DEX (1 ml). Intraoperative block characteristics, parturients' postoperative quality of recovery, maternal and neonatal outcomes and the plasma concentration of DEX were measured. All parturients were followed up for 30 days to determine whether nerve injury occurred.ResultsCompared with group B, the duration of sensory block in group FB and group DB were significantly prolonged (108.4 min [95% Confidence Interval (CI) = 104.6-112.3] in group B, and 122.0 min [95% CI = 116.8-127.3] in group FB, 148.2 min [95% CI = 145.3-151.1] in group DB). The overall score of quality recovery in group DB (71.6 [95% CI = 71.0-72.2]) was significantly higher than that in group FB (61.5 [95% CI = 60.8-62.2]) and group B (61.7 [95% CI = 61.0-62.4]). There was no statistically significant difference among the three groups for PH, PaO2, and PaCO2 of newborn. The plasma concentration of DEX in umbilical artery and umbilical vein was low and cannot be detected. The 30-days follow-up of parturients did not show any new onset of back, buttock or leg pain or paresthesia.ConclusionsDEX is a potential local anesthetic adjuvant that the intrathecal combination of 5 μg DEX can safely exhibit a facilitatory block effect and improve parturients' recovery quality.Trial registrationChinese Clinical Trial Registry (Registration number # ChiCTR1900022019 ; Date of Registration on March 20th, 2019).

Dataset Information

Effect of Melatonin on Blood Loss After Cesarean Section: A Prospective Randomized Double-Blind Trial.

Publications

Effect of Melatonin on Blood Loss After Cesarean Section: A Prospective Randomized Double-Blind Trial.

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