Caffeine Intake Inrelation to Perioperative Analgesic Consumption
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ClinicalTrials.gov Identifier: NCT05330754 |
Recruitment Status :
Completed
First Posted : April 15, 2022
Last Update Posted : November 16, 2022
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Caffeine is the most widely consumed psychoactive drug in the world. Natural sources of caffeine include coffee, tea, and chocolate. Synthetic caffeine is also added to products to promote arousal, alertness, energy, and elevated mood.
We designed this prospective observational study to determine if caffeine consumption would influence intraoperative analgesic consumption
Condition or disease | Intervention/treatment |
---|---|
Analgesia Caffeine | Dietary Supplement: Caffeine intake in mg |
Study Type : | Observational |
Actual Enrollment : | 90 participants |
Observational Model: | Cohort |
Time Perspective: | Cross-Sectional |
Official Title: | Effect Of Daily Caffeine Intake On Perioperative Analgesic Consumption And Recovery Time In Patients Undergoing Laparoscopic Surgeries. |
Actual Study Start Date : | April 20, 2022 |
Actual Primary Completion Date : | August 30, 2022 |
Actual Study Completion Date : | September 10, 2022 |
Group/Cohort | Intervention/treatment |
---|---|
Control group
No caffeine intake
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Dietary Supplement: Caffeine intake in mg
Preanesthetic check-up was done. Average daily caffeine consumption in mg was calculated according to "caffeine content in consumed drinks" as estimated by "Food Data Central". |
Safe level Group
Caffeine daily intake ≤200 mg/day
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Dietary Supplement: Caffeine intake in mg
Preanesthetic check-up was done. Average daily caffeine consumption in mg was calculated according to "caffeine content in consumed drinks" as estimated by "Food Data Central". |
Unsafe level group:
Caffeine daily intake >200 mg/day
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Dietary Supplement: Caffeine intake in mg
Preanesthetic check-up was done. Average daily caffeine consumption in mg was calculated according to "caffeine content in consumed drinks" as estimated by "Food Data Central". |
- total intraoperative fentanyl consumption in microgram [ Time Frame: 2 hours ]Amount of total intraoperative fentanyl consumption in microgram

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Ages Eligible for Study: | 18 Years to 65 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Sampling Method: | Non-Probability Sample |
Inclusion Criteria:
- Patients scheduled to undergo elective laparoscopic surgery
Exclusion Criteria:
- Patients converted to an open surgery, postoperative complications that increased postoperative pain, and those with psychological or nervous system diseases were also excluded. Liver disease

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05330754
Egypt | |
Ain Shams University Hospitals | |
Cairo, Egypt |
Responsible Party: | Raham Hasan Mostafa, MD, Assistant Professor of Anesthesia, Ain Shams University |
ClinicalTrials.gov Identifier: | NCT05330754 |
Other Study ID Numbers: |
R 67/ 2022 |
First Posted: | April 15, 2022 Key Record Dates |
Last Update Posted: | November 16, 2022 |
Last Verified: | November 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Plan Description: | The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Caffeine Central Nervous System Stimulants Physiological Effects of Drugs Phosphodiesterase Inhibitors Enzyme Inhibitors |
Molecular Mechanisms of Pharmacological Action Purinergic P1 Receptor Antagonists Purinergic Antagonists Purinergic Agents Neurotransmitter Agents |