Dataset Information

Effect of Melatonin on Sleep in the Perioperative Period after Breast Cancer Surgery: A Randomized, Double-Blind, Placebo-Controlled Trial.

ABSTRACT: To investigate whether administration of an oral dose of 6 mg melatonin before bedtime perioperatively in breast cancer surgery could change sleep outcomes measured by actigraphy.This paper reports secondary outcomes from a double-blind, placebo-controlled, randomized clinical trial where patients received 6 mg melatonin (n = 27) or placebo (n = 21) approximately 60 minutes before bedtime 3 nights preoperatively until at least one week postoperatively. Participants were monitored in the entire period with actigraphy, and were instructed to complete visual analogue scale (VAS) for sleep, and the Karolinska Sleepiness Scale (KSS) each morning.Administration of 6 mg oral melatonin approximately 1 hour before bedtime resulted in significantly increased sleep efficiency and reduced wake after sleep onset for the entire 2-week postoperative period. No other significant differences for actigraphy determined sleep outcomes or subjective outcome parameters in the perioperative period were found between the groups. Overall, the patients sleep outcomes were within normal ranges and no participants had pathological sleep disturbances.Melatonin significantly changed sleep efficiency and wake after sleep onset after surgery, but had no effects on other objective sleep outcomes or on subjective sleep quality (VAS and KSS).

SUBMITTER: Madsen MT

PROVIDER: S-EPMC4751412 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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Effect of Melatonin on Sleep in the Perioperative Period after Breast Cancer Surgery: A Randomized, Double-Blind, Placebo-Controlled Trial.

Madsen Michael Tvilling MT Hansen Melissa Voigt MV Andersen Lærke Toftegård LT Hageman Ida I Rasmussen Lars Simon LS Bokmand Susanne S Rosenberg Jacob J Gögenur Ismail I

Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine 20160201 2

<h4>Study objectives</h4>To investigate whether administration of an oral dose of 6 mg melatonin before bedtime perioperatively in breast cancer surgery could change sleep outcomes measured by actigraphy.<h4>Methods</h4>This paper reports secondary outcomes from a double-blind, placebo-controlled, randomized clinical trial where patients received 6 mg melatonin (n = 27) or placebo (n = 21) approximately 60 minutes before bedtime 3 nights preoperatively until at least one week postoperatively. Pa ...[more]

PMID: 26414973

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Project description:ObjectiveTo assess the effectiveness and safety of melatonin in treating severe sleep problems in children with neurodevelopmental disorders.Design12 week double masked randomised placebo controlled phase III trial.Setting19 hospitals across England and Wales.Participants146 children aged 3 years to 15 years 8 months were randomised. They had a range of neurological and developmental disorders and a severe sleep problem that had not responded to a standardised sleep behaviour advice booklet provided to parents four to six weeks before randomisation. A sleep problem was defined as the child not falling asleep within one hour of lights out or having less than six hours' continuous sleep.InterventionsImmediate release melatonin or matching placebo capsules administered 45 minutes before the child's bedtime for a period of 12 weeks. All children started with a 0.5 mg capsule, which was increased through 2 mg, 6 mg, and 12 mg depending on their response to treatment.Main outcome measuresTotal sleep time at night after 12 weeks adjusted for baseline recorded in sleep diaries completed by the parent. Secondary outcomes included sleep onset latency, assessments of child behaviour, family functioning, and adverse events. Sleep was measured with diaries and actigraphy.ResultsMelatonin increased total sleep time by 22.4 minutes (95% confidence interval 0.5 to 44.3 minutes) measured by sleep diaries (n=110) and 13.3 (-15.5 to 42.2) measured by actigraphy (n=59). Melatonin reduced sleep onset latency measured by sleep diaries (-37.5 minutes, -55.3 to -19.7 minutes) and actigraphy (-45.3 minutes, -68.8 to -21.9 minutes) and was most effective for children with the longest sleep latency (P=0.009). Melatonin was associated with earlier waking times than placebo (29.9 minutes, 13.6 to 46.3 minutes). Child behaviour and family functioning outcomes showed some improvement and favoured use of melatonin. Adverse events were mild and similar between the two groups.ConclusionsChildren gained little additional sleep on melatonin; though they fell asleep significantly faster, waking times became earlier. Child behaviour and family functioning outcomes did not significantly improve. Melatonin was tolerable over this three month period. Comparisons with slow release melatonin preparations or melatonin analogues are required.Trial registrationISRCT No 05534585.

Project description:INTRODUCTION:Melatonin, secreted by the pineal gland during the night phase, is a regulator of the biological clock and sleep tendency. Totally blind subjects frequently report severe, periodic sleep problems, with 50%-75% of cases displaying non-24-hour sleep-wake disorder (N24HSWD) due to inability to synchronize with the environmental day-night cycle. Melatonin immediate-release preparations are reportedly effective in N24HSWD. Here, we studied the efficacy and safety of prolonged-release melatonin (PRM), a registered drug for insomnia, for sleep disorders in totally blind subjects living in normal social environments. The primary endpoint was demonstration of clinically meaningful effects on sleep duration (upper confidence interval [CI] limit >20 minutes whether significant or not) to allow early decision-making on further drug development in this indication. TRIAL REGISTRATION:ClinicalTrials.gov registry - NCT00972075. METHODS:In a randomized, double-blind, placebo-controlled proof-of-principle study, 13 totally blind subjects had 2 weeks' placebo run-in, 6 weeks' randomized (1:1) PRM (Circadin(®)) or placebo nightly, and 2 weeks' placebo run-out. Outcome measures included daily voice recorded sleep diary, Clinical Global Impression of Change (CGIC), WHO-Five Well-being Index (WHO-5), and safety. RESULTS:Mean nightly sleep duration improved by 43 minutes in the PRM and 16 minutes in the placebo group (mean difference: 27 minutes, 95% CI: -14.4 to 69 minutes; P=0.18; effect size: 0.82) meeting the primary endpoint. Mean sleep latency decreased by 29 minutes with PRM over placebo (P=0.13; effect size: 0.92) and nap duration decreased in the PRM but not placebo group. The variability in sleep onset/offset and latency tended to decrease during PRM but not placebo treatment. The potentially beneficial effects of PRM persisted during the 2 weeks of discontinuation period, consistent with clock stabilizing effects. PRM was well-tolerated, adverse events were of mild or moderate severity and similar between PRM and placebo. CONCLUSION:Nightly use of PRM may potentially improve patient-reported sleep difficulties in totally blind individuals trying to adhere to normal social lifestyle. A larger study powered to demonstrate a statistically significant effect is warranted.

Dataset Information

Effect of Melatonin on Sleep in the Perioperative Period after Breast Cancer Surgery: A Randomized, Double-Blind, Placebo-Controlled Trial.

Publications

Effect of Melatonin on Sleep in the Perioperative Period after Breast Cancer Surgery: A Randomized, Double-Blind, Placebo-Controlled Trial.

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