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Status unknownNCT03109054Updated Apr 12, 2017

Endogenous Melatonin Level and Pre- Postoperative Anxiety in Bariatric Surgery Patients.

An observational study in Anxiety Disorders and Melatonin, sponsored by Inonu University. Status unknown at 1 site in Turkey (Türkiye). Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2017-04-12.

Sponsored by Inonu University · Observational

The sponsor has not verified this record recently (last verified Apr 2017), so the status shown — last known as Enrolling by invitation — may be out of date.
Study type
Observational
Model
Case-control
Time perspective
Prospective
Enrollment
50
Ages
18 Years to 65 Years
Sex
All
01

Study summary

Bariatric surgical procedures are associated with low short-term mortality and may be associated with long-term reductions in all-cause, cardiovascular, and cancer-related mortality. This surgeries are major surgeries include risk of mortality still.

Different level anxiety that can define as fear or worry can be seen in 60%-80% of patients scheduled surgery. Anxiety levels; may vary on age, gender, type of operation, previous experience of anesthesia and surgery and way of hospitalization. Preoperative anxiety affects negatively the surgery, the anesthesia and postoperative recovery.

Melatonin is a hormone secreted from the pineal gland. The circadian rhythm of melatonin changes according to age and it's production decreases with older ages. Melatonin is an antioxidant, antinociceptive, hypnotic, anticonvulsant, neuroprotective, anxiolytic, sedative, analgesic and has a preventive effect of delirium in intensive care. Irregularity of melatonin secretion causes a sleep irregularities, psychosis in intensive care unit and some behavioral disorder. It has been demonstrated that oral exogen administration of melatonin was effective on preoperative anxiety.

The aim of this study was to determine the relationship between endogenous melatonin levels and anxiety levels in patients with bariatric surgery.

Read the detailed description

Bariatric surgical procedures, including gastric bypass, vertical sleeve gastrectomy, and biliopancreatic diversion, are the most effective and durable treatments for obesity. Bariatric surgery provides long-term benefit for patients with diabetes, fatty liver disease, and other metabolic disorders, through both weight loss-dependent and -independent mechanisms.

Bariatric surgery is associated with low short-term mortality and may be associated with long-term reductions in all-cause, cardiovascular, and cancer-related mortality. This surgeries are major surgeries include risk of mortality still.

Different level anxiety that can define as fear or worry can be seen in 60%-80% of patients scheduled surgery. Anxiety levels; may vary on age, gender, type of operation, previous experience of anesthesia and surgery and way of hospitalization. Preoperative anxiety affects negatively the surgery, the anesthesia and postoperative recovery. It may cause the pathophysiological response as hypertension and arrhythmia even refusal the surgery is planned. Also the anesthetic requirements and the risk "awareness" during the operation may increase. Patients with high level anxiety have more postoperative pain symptoms too. Therefore determination of the causes and prevention of anxiety is important.

Melatonin is a hormone secreted from the pineal gland, also known as the pineal gland. It's production is stimulated by darkness, independent of sleep, and is inhibited by exposure to light and proved endocrine rhythms. It shows a daily biorhythm. The circadian rhythm of melatonin changes according to age and it's production decreases with older ages. Melatonin level can be measured in the blood and in urine collected for 24 hours. Melatonin is an antioxidant, antinociceptive, hypnotic, anticonvulsant, neuroprotective, anxiolytic, sedative, analgesic and has a preventive effect of delirium in intensive care. Irregularity of melatonin secretion causes a sleep irregularities, psychosis in intensive care unit and some behavioral disorder. It has been demonstrated that oral exogen administration of melatonin was effective on preoperative anxiety.

The aim of this study was to determine the relationship between endogenous melatonin levels and anxiety levels in patients with bariatric surgery.

02

Conditions studied

  • Anxiety Disorders
  • Melatonin

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Keywords

  • Melatonin
  • Anxiety
03

In context

Anxiety Disorders

5,063 studies on the registry are indexed under Anxiety Disorders; 1,408 are open to participants now.

This study's planned enrollment of 50 is below the median of 148 across 630 observational studies indexed under Anxiety Disorders.

Browse Anxiety Disorders studies →

Lead sponsor

Inonu University is the lead sponsor of 385 studies on the registry; 90 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

50 patients of American Society of Anesthesiologists (ASA) 1-2 status, aged between 18-65 years who are scheduled to undergo bariatric surgery, will be included in the study.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

American Society of Anesthesiologists (ASA) 3-4 status, aged between 18-65 years who are scheduled to undergo bariatric surgery.

Exclusion criteria

Exclusion Criteria:

Patients with cardiovascular and pulmonary disease, those with ASA III-IV and propofol, fentanyl, remifentanil and rocuronium allergy.

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Study design

Observational model
Case-control
Time perspective
Prospective
Enrollment
50 participants (estimated)
Patient registry
No

Groups and cohorts

  • Low Anxiety Level

    The patients had low anxiety levels. Anxiety levels will determine with S-Anxiety TX-1 (State-Trait Anxiety Inventory Test:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3879951/)

    Diagnostic Test: State-Trait Anxiety Inventory Test

  • High Anxiety Level

    The patients had high anxiety levels. Anxiety levels will determine with S-Anxiety (State-Trait Anxiety Inventory Test: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3879951/)

    Diagnostic Test: State-Trait Anxiety Inventory Test

Interventions

  • Diagnostic testState-Trait Anxiety Inventory Test

    All patients will take a State-Trait Anxiety Inventory Test. After the test patients will enroll low or high anxiety level.

    Also known as: STAI FORM TX-1

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What researchers measure

Primary outcomes

  1. change in melatonin levels

    Melatonin is a hormone secreted from the pineal gland. It shows a daily biorhythm. The circadian rhythm of melatonin changes according to age and it's production decreases with older ages. Melatonin level can be measured in the blood and in urine collected for 24 hours.

    Time frame: preoperative and 24. hour after postoperative

Secondary outcomes

  1. S-Anxiety (State-Trait Anxiety Inventory Test

    Anxiety levels; may vary on age, gender, type of operation, previous experience of anesthesia and surgery and way of hospitalization.

    Time frame: preoperative and 24. hour after postoperative

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Study locations

1 site
  • Inonu university
    Malatya, Malatya 044100, Turkey (Türkiye)
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References and documents

Publications

  • Cardoso L, Rodrigues D, Gomes L, Carrilho F. Short- and long-term mortality after bariatric surgery: A systematic review and meta-analysis. Diabetes Obes Metab. 2017 Sep;19(9):1223-1232. doi: 10.1111/dom.12922. Epub 2017 May 31. PubMed 28244626 ↗
  • Hansen MV. Chronobiology, cognitive function and depressive symptoms in surgical patients. Dan Med J. 2014 Sep;61(9):B4914. PubMed 25186550 ↗
  • Edwards-Hampton SA, Madan A, Wedin S, Borckardt JJ, Crowley N, Byrne KT. A closer look at the nature of anxiety in weight loss surgery candidates. Int J Psychiatry Med. 2014;47(2):105-13. doi: 10.2190/PM.47.2.b. PubMed 25084797 ↗

Individual participant data

Plan to share: No — no a plan

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Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Mar 2017 (actual). Primary completion is estimated for May 2017, 2 months after the start.

Of 262 non-industry observational studies under Anxiety Disorders, half reached primary completion within 19 months of starting (the median), counting those still running; a quarter within 6 and three quarters within 52. This study's planned 2 months is below that.

Counting every sponsor, half of 284 studies reached it within 18 months; a quarter within 6 and three quarters within 46.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 28, 2017
First posted
Apr 12, 2017
StartActual
Mar 15, 2017
Primary completionEst.
May 15, 2017
CompletionEst.
Jun 15, 2017
Last update
Apr 12, 2017
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Apr 12, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03109054
Lead sponsor
Inonu University
Responsible party
Mehmet Ali Erdoğan (Associate Professor, M.D., Inonu University) — Principal investigator
First posted
Apr 12, 2017
Start date
Mar 15, 2017
Primary completion
May 15, 2017 (estimated)
Completion
Jun 15, 2017 (estimated)
Last update
Apr 12, 2017

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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