Anesthesia, General Clinical Trial
— SEVONATEOfficial title:
Effects of Nitrous Oxide Added at the End of Sevoflurane Anesthesia on Recovery and Postoperative Nausea and Vomiting - a Randomized Clinical Trial (SEVONATE)
Verified date | August 2020 |
Source | General Hospital Zadar |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
Addition of nitrous oxide N2O towards the end of prolonged isoflurane anesthesia hastens patients recovery. The hypothesis is that the addition of N2O at the end of prolonged sevoflurane anaesthesia also hastens early recovery without increasing the frequencies and intensity of PONV and improves quality of recovery.
Status | Completed |
Enrollment | 100 |
Est. completion date | July 25, 2021 |
Est. primary completion date | July 10, 2021 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years to 80 Years |
Eligibility | Inclusion Criteria: - Adult patients, American Society of Anesthesiologists Physical status ASA PS I-III, scheduled for laparotomic and laparoscopic surgery expected to last 2 hours or more who can understand and signed informed consent. Exclusion Criteria: - Patients who will be discharged within 72 hours after surgery - Patients on intensive care within few months before the study enrollment - Diseases that impair gastric motility (diabetes mellitus, chronic cholecystitis, gastric and intestinal disease, neuromuscular disorders, neuropathies, liver dysfunction) - Vestibular disease; history of migraine headaches, central nervous system injury - Renal impairment - Patients on antihistamines, antipsychotics, contraceptives, steroids within 72 hours before surgery - Known hypersensitivity to drugs used in the study protocol - Alcoholism, and/or opioid addiction - Conditions that can influence the incidence of PONV, postoperative pain or morbidity (e.g., significant intraoperative surgery complications), intraoperative drug allergy, severe intraoperative hypotension, perioperative hypoxia, excessive blood loss, difficult intubation |
Country | Name | City | State |
---|---|---|---|
Croatia | General Hospital Zadar | Zadar |
Lead Sponsor | Collaborator |
---|---|
General Hospital Zadar |
Croatia,
Agoliati A, Dexter F, Lok J, Masursky D, Sarwar MF, Stuart SB, Bayman EO, Epstein RH. Meta-analysis of average and variability of time to extubation comparing isoflurane with desflurane or isoflurane with sevoflurane. Anesth Analg. 2010 May 1;110(5):1433-9. doi: 10.1213/ANE.0b013e3181d58052. — View Citation
Jones PM, Bainbridge D, Chu MWA, Fernandes PS, Fox SA, Iglesias I, Kiaii B, Lavi R, Murkin JM. Comparison of isoflurane and sevoflurane in cardiac surgery: a randomized non-inferiority comparative effectiveness trial. Can J Anaesth. 2016 Oct;63(10):1128-1139. doi: 10.1007/s12630-016-0706-y. Epub 2016 Jul 27. — View Citation
Mraovic B, Simurina T, Gan TJ. Nitrous oxide added at the end of isoflurane anesthesia hastens early recovery without increasing the risk for postoperative nausea and vomiting: a randomized clinical trial. Can J Anaesth. 2018 Feb;65(2):162-169. doi: 10.1007/s12630-017-1013-y. Epub 2017 Nov 17. — View Citation
Myles PS, Hunt JO, Nightingale CE, Fletcher H, Beh T, Tanil D, Nagy A, Rubinstein A, Ponsford JL. Development and psychometric testing of a quality of recovery score after general anesthesia and surgery in adults. Anesth Analg. 1999 Jan;88(1):83-90. — View Citation
Myles PS, Weitkamp B, Jones K, Melick J, Hensen S. Validity and reliability of a postoperative quality of recovery score: the QoR-40. Br J Anaesth. 2000 Jan;84(1):11-5. — View Citation
Myles PS, Wengritzky R. Simplified postoperative nausea and vomiting impact scale for audit and post-discharge review. Br J Anaesth. 2012 Mar;108(3):423-9. doi: 10.1093/bja/aer505. Epub 2012 Jan 29. — View Citation
Peyton PJ, Wu CY. Nitrous oxide-related postoperative nausea and vomiting depends on duration of exposure. Anesthesiology. 2014 May;120(5):1137-45. doi: 10.1097/ALN.0000000000000122. Erratum in: Anesthesiology. 2014 Dec;121(6):1359. — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Other | Postoperative sedation | Ramsay Sedation Scale [score 1-6] consists of six levels of sedation [Awake levels: 1, patient anxious and agitated or restless or both; 2, patient co-operative, orientated, and tranquil; 3, patient responds to commands only. Asleep levels are dependent on the patient's response to a light glabellar tap or loud auditory stimulus: 4, a brisk response; 5, a sluggish response; and 6, no response]. | 2 hours | |
Other | Postoperative nausea and vomiting | The use of rescue antiemetics (yes/no and quantity in milligrams) | 24 hours | |
Other | Postoperative pain | The use of analgesics (opioids/nonopioids:yes/no and quantity in milligrams) | 24 hours | |
Other | Readiness for Discharge from the Postanesthesia Care Unit (PACU) | Modified Aldrete score: Activity - able to move voluntarily or on command: 2 - four extremities ; 1- two extremities ; 0- extremities 0; Respiration: 2 - able to deep breathe and cough freely , 1 - dyspnea, shallow or limited breathing , 0 - apneic. Circulation - blood pressure , BP of preanesthetic level: 2 - BP ± 20 mm; 1 - BP ± 20-50 mm; 0 - BP ± 50 mm. Consciousness: 2 fully awake;1 arousable on calling; 0 not responding.O2 saturation : 2 - able to maintain O2 saturation >92% on room air; 1- needs O2 inhalation to maintain O2 saturation >90%; 0 - O2 saturation <90% even with O2 supplementation. A score 9 and more = Ready for Discharge from the Postanesthesia Care Unit | 2 hours | |
Primary | Early recovery (awakening) in the operation room (OR) | eye opening (in minutes), following verbal commands (in minutes), time to extubation (in minutes ), orientation to time and place (in minutes) | 15 minutes | |
Secondary | Postoperative nausea and vomiting | Simplified postoperative nausea and vomiting impact scale:the sum of the numerical responses to questions Q1 and Q2 ( Q1: The vomiting or dry-retching count? 0 -2 or 3 (three or more times); Q2: Severity of nausea - interference with activities of daily living: score 0-3 [0 - not at all, 1-sometimes, 2- often or most of the time, 3- all of the time] ) and score =5 defines clinically important PONV. | 24 hours | |
Secondary | Quality of recovery | Quality of Recovery 40 questionnaire on the first, second and third postoperative days: The QoR-40 consists of five clinically relevant dimensions: (i) physical comfort (12 items), (ii) emotional state (9 items), (iii) physical independence (5 items), (iv) psychological support (7 items), and (v) pain (7 items). Each item is rated on a five-point Likert scale. The QoR-40 score ranges from 40 (extremely poor quality of recovery) to 200 (excellent quality of recovery). | 72 hours | |
Secondary | Postoperative pain | Visual analogue scale VAS pain score [a 100 mm visual analogue scale (VAS) 0= no pain, 10= maximal pain] | 24 hours |
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