scholarly journals Reactance to social authority in entertainment-education media: study protocol for an online randomized controlled trial (Preprint)

2020 ◽  
Author(s):  
Alain Vandormael ◽  
Maya Adam ◽  
Merlin Greuel ◽  
Violetta Hachaturyan ◽  
Caterina Favaretti ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
Controlled Trial ◽  
Secondary Outcome ◽  
Placebo Control ◽  
Entertainment Education ◽  
Health Message ◽  
Online Data ◽  
Randomized Controlled ◽  
Social Authority ◽  
Sugar Reduction

BACKGROUND Entertainment-education (E-E) media can be an effective strategy for influencing health behaviors. To improve E-E effectiveness, we investigate if the social authority of a person delivering a health message arouses motivation to reject that message—a phenomenon known as reactance. Using a short, animated video, we measure reactance to a sugar reduction message that is narrated by a child (low social authority), the child’s mother (equivalent social authority to the target audience), and the family physician (high social authority). OBJECTIVE This study aims to 1) determine the effect of the narrator’s social authority on reactance to the sugar reduction message; 2) establish the video’s effectiveness in improving behavioral intent to reduce the intake of added sugars; and 3) quantify participant’s interest in watching the E-E intervention video. METHODS This is a parallel group, randomized controlled trial comparing an intervention video narrated by a (i) low, (ii) equivalent, or (iii) high social authority against an (iv) attention placebo control video, and a (v) control video. The primary outcomes will include measures of antecedents of reactance, its components, and its attitudinal and behavioral outcomes. For our secondary outcome, we will assess participant engagement with the sugar intervention videos. We will leverage a regression framework to analyze online data collected from 4,000 English-speaking participants aged 18 to 59 years. RESULTS The study received ethics approval from the Heidelberg University’s Ethics Committee on March 18th, 2020 (S-088/2020). The participant recruitment has not started yet but is planned to be completed by December 2020. The data analysis is planned to be finished in February 2021 and the final results are planned to be published by April 2021. CONCLUSIONS This trial will utilize several randomization procedures, list experimentation methods, and new online technologies to investigate the effect of social authority on reactance to a persuasive health message. Our results will inform the design of future E-E videos for public health promotion needs. CLINICALTRIAL This study was registered at the German Clinical Trials Register (www.drks.de) on July 24th, 2020: DRKS00022340.

scholarly journals Reactance to Social Authority in a Sugar Reduction Informational Video: Web-Based Randomized Controlled Trial of 4013 Participants

10.2196/29664 ◽  
2021 ◽  
Vol 23 (11) ◽  
pp. e29664
Author(s):  
Violetta Hachaturyan ◽  
Maya Adam ◽  
Caterina Favaretti ◽  
Merlin Greuel ◽  
Jennifer Gates ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
Family Physician ◽  
Controlled Trial ◽  
Health Messages ◽  
Message Content ◽  
Health Message ◽  
Web Based ◽  
Randomized Controlled ◽  
Social Authority ◽  
Sugar Reduction

Background Short and animated story-based (SAS) videos can be an effective strategy for promoting health messages. However, health promotion strategies often motivate the rejection of health messages, a phenomenon known as reactance. In this study, we examine whether the child narrator of a SAS video (perceived as nonthreatening, with low social authority) minimizes reactance to a health message about the consumption of added sugars. Objective This study aims to determine whether our SAS intervention video attenuates reactance to the sugar message when compared with a content placebo video (a health message about sunscreen) and a placebo video (a nonhealth message about earthquakes) and determine if the child narrator is more effective at reducing reactance to the sugar message when compared with the mother narrator (equivalent social authority to target audience) or family physician narrator (high social authority) of the same SAS video. Methods This is a web-based randomized controlled trial comparing an intervention video about sugar reduction narrated by a child, the child’s mother, or the family physician with a content placebo video about sunscreen use and a placebo video about earthquakes. The primary end points are differences in the antecedents to reactance (proneness to reactance, threat level of the message), its components (anger and negative cognition), and outcomes (source appraisal and attitude). We performed analysis of variance on data collected (N=4013) from participants aged 18 to 59 years who speak English and reside in the United Kingdom. Results Between December 9 and December 11, 2020, we recruited 38.62% (1550/4013) men, 60.85% (2442/4013) women, and 0.52% (21/4013) others for our study. We found a strong causal relationship between the persuasiveness of the content promoted by the videos and the components of reactance. Compared with the placebo (mean 1.56, SD 0.63) and content placebo (mean 1.76, SD 0.69) videos, the intervention videos (mean 1.99, SD 0.83) aroused higher levels of reactance to the message content (P<.001). We found no evidence that the child narrator (mean 1.99, SD 0.87) attenuated reactance to the sugar reduction message when compared with the physician (mean 1.95, SD 0.79; P=.77) and mother (mean 2.03, SD 0.83; P=.93). In addition, the physician was perceived as more qualified, reliable, and having more expertise than the child (P<.001) and mother (P<.001) narrators. Conclusions Although children may be perceived as nonthreatening messengers, we found no evidence that a child narrator attenuated reactance to a SAS video about sugar consumption when compared with a physician. Furthermore, our intervention videos, with well-intended goals toward audience health awareness, aroused higher levels of reactance when compared with the placebo videos. Our results highlight the challenges in developing effective interventions to promote persuasive health messages. Trial Registration German Clinical Trials Registry DRKS00022340; https://tinyurl.com/mr8dfena International Registered Report Identifier (IRRID) RR2-10.2196/25343

scholarly journals Reactance to Social Authority in a Sugar Reduction Informational Video: Web-Based Randomized Controlled Trial of 4013 Participants (Preprint)

2021 ◽  
Author(s):  
Violetta Hachaturyan ◽  
Maya Adam ◽  
Caterina Favaretti ◽  
Merlin Greuel ◽  
Jennifer Gates ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
Family Physician ◽  
Controlled Trial ◽  
Health Messages ◽  
Message Content ◽  
Health Message ◽  
Web Based ◽  
Randomized Controlled ◽  
Social Authority ◽  
Sugar Reduction

BACKGROUND Short and animated story-based (SAS) videos can be an effective strategy for promoting health messages. However, health promotion strategies often motivate the rejection of health messages, a phenomenon known as reactance. In this study, we examine whether the child narrator of a SAS video (perceived as nonthreatening, with low social authority) minimizes reactance to a health message about the consumption of added sugars. OBJECTIVE This study aims to determine whether our SAS intervention video attenuates reactance to the sugar message when compared with a content placebo video (a health message about sunscreen) and a placebo video (a nonhealth message about earthquakes) and determine if the child narrator is more effective at reducing reactance to the sugar message when compared with the mother narrator (equivalent social authority to target audience) or family physician narrator (high social authority) of the same SAS video. METHODS This is a web-based randomized controlled trial comparing an intervention video about sugar reduction narrated by a child, the child’s mother, or the family physician with a content placebo video about sunscreen use and a placebo video about earthquakes. The primary end points are differences in the antecedents to reactance (proneness to reactance, threat level of the message), its components (anger and negative cognition), and outcomes (source appraisal and attitude). We performed analysis of variance on data collected (N=4013) from participants aged 18 to 59 years who speak English and reside in the United Kingdom. RESULTS Between December 9 and December 11, 2020, we recruited 38.62% (1550/4013) men, 60.85% (2442/4013) women, and 0.52% (21/4013) others for our study. We found a strong causal relationship between the persuasiveness of the content promoted by the videos and the components of reactance. Compared with the placebo (mean 1.56, SD 0.63) and content placebo (mean 1.76, SD 0.69) videos, the intervention videos (mean 1.99, SD 0.83) aroused higher levels of reactance to the message content (<i>P</i>&lt;.001). We found no evidence that the child narrator (mean 1.99, SD 0.87) attenuated reactance to the sugar reduction message when compared with the physician (mean 1.95, SD 0.79; <i>P</i>=.77) and mother (mean 2.03, SD 0.83; <i>P</i>=.93). In addition, the physician was perceived as more qualified, reliable, and having more expertise than the child (<i>P&lt;</i>.001) and mother (<i>P&lt;</i>.001) narrators. CONCLUSIONS Although children may be perceived as nonthreatening messengers, we found no evidence that a child narrator attenuated reactance to a SAS video about sugar consumption when compared with a physician. Furthermore, our intervention videos, with well-intended goals toward audience health awareness, aroused higher levels of reactance when compared with the placebo videos. Our results highlight the challenges in developing effective interventions to promote persuasive health messages. CLINICALTRIAL German Clinical Trials Registry DRKS00022340; https://tinyurl.com/mr8dfena INTERNATIONAL REGISTERED REPORT RR2-10.2196/25343

scholarly journals An entertainment-education approach to prevent COVID-19 spread: study protocol for a multi-site randomized controlled trial

Trials ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Alain Vandormael ◽  
Maya Adam ◽  
Merlin Greuel ◽  
Till Bärnighausen
Keyword(s):  
Randomized Controlled Trial ◽  
Controlled Trial ◽  
Public Health Intervention ◽  
Physical Contact ◽  
Placebo Control ◽  
Entertainment Education ◽  
Behavioral Intent ◽  
Randomized Controlled ◽  
The Usa ◽  
The Uk

Abstract Background Entertainment-education (E-E) media can improve behavioral intent toward health-related practices. In the era of COVID-19, millions of people can be reached by E-E media without requiring any physical contact. We have designed a short, wordless, animated video about preventive COVID-19 behaviors that can be rapidly distributed through social media channels to a global audience. The E-E video’s effectiveness, however, remains unclear. Methods/design This is a multi-site, parallel group, randomized controlled trial comparing the effectiveness of an E-E video on COVID-19 against (i) an attention placebo control (APC) video and (ii) no video. For our primary outcomes, we will measure knowledge about preventive COVID-19 behaviors. We will also use a list randomization approach to measure behavioral intent toward preventative COVID-19 behaviors. In each trial arm, participants will be randomized to a control list or a control list plus an item about social distancing, washing hands, cleaning household surfaces, sharing of eating utensils, and the stockpiling of essential goods. Using an online platform, we will recruit 17,010 participants (aged 18–59 years) from the USA, the UK, Germany, Spain, France, and Mexico. Trial registration German Clinical Trials Register #DRKS00021582. Registered on May 12, 2020. Discussion This trial will utilize several randomization procedures, list experimentation methods, and state-of-the-art online technology to demonstrate the effectiveness of an E-E video to improve knowledge of, and behavioral intent toward, the prevention of COVID-19. Our results will inform future E-E video campaigns for COVID-19 and similar public health intervention needs.

scholarly journals Does regular strength training cause urinary incontinence in overweight inactive women? A randomized controlled trial

2021 ◽  
Author(s):  
Kari Bø ◽  
Lene Anette H. Haakstad ◽  
Gøran Paulsen ◽  
Anne Mette Rustaden
Keyword(s):  
Randomized Controlled Trial ◽  
Urinary Incontinence ◽  
Strength Training ◽  
Short Form ◽  
Controlled Trial ◽  
Secondary Outcome ◽  
Control Group ◽  
Randomized Controlled ◽  
Sum Score ◽  
New Onset

Abstract Introduction and hypothesis Urinary incontinence (UI) is common in women who exercise. We aimed to investigate new onset UI in formerly inactive, overweight or obese women (BMI > 25) participating in three different strength training modalities compared with a non-exercising control group. Methods This was a secondary analysis of an assessor blinded randomized controlled trial investigating the effect of 12 weeks of three strength training concepts for women on muscle strength and body composition. None of the programs included pelvic floor muscle training. International Consensus on Incontinence Questionnaire Urinary Incontinence Short Form (ICIQ-UI-SF) was used to investigate primary outcome; new onset UI, and secondary outcome; ICIQ-UI-SF sum score. Suissa and Shuster’s exact unconditional test was used to analyze difference in new onset UI. Difference in ICIQ-UI-SF sum score is presented as mean with 95% CI. Results At baseline 40 out of 128 (31.2%) participants reported UI. Three out of 27, 2 out of 17, 2 out of 23, and 0 out of 21 women in the three training and control groups respectively had new onset UI. There were no statistically significant differences in new onset UI across the groups or when collapsing new onset UI in the intervention groups compared with the controls (7 out of 67 vs 0 out of 21), p = 0.124. After the intervention the control group reported worse ICIQ-UI-SF sum score than any of the training groups; mean difference − 6.6 (95% CI: −11.9, −1.27), p = 0.012, but there was no difference in change from baseline to 12 weeks between the groups p = 0.145). Conclusions There was no statistically significant change in UI after strength training.

scholarly journals OP0010 EFFECTIVENESS OF THE MAKING IT WORK™ PROGRAM AT IMPROVING PRESENTEEISM AND WORK CESSATION IN WORKERS WITH INFLAMMATORY ARTHRITIS – RESULTS OF A RANDOMIZED CONTROLLED TRIAL

2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 7.1-8
Author(s):  
A. Luquini ◽  
Y. Zheng ◽  
H. Xie ◽  
C. Backman ◽  
P. Rogers ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
Work Disability ◽  
Inflammatory Arthritis ◽  
Missing Values ◽  
Controlled Trial ◽  
Intervention Group ◽  
Secondary Outcome ◽  
Mixed Effect ◽  
Randomized Controlled ◽  
Baseline Characteristics

Background:Arthritis often leads to presenteeism (decreased at-work productivity), missed days from work and permanent work disability, leading to reduced quality of life and high costs to individuals and society. Yet, health services addressing the employment needs of people with arthritis are lacking.Objectives:We evaluated the effectiveness of the Making-it-WorkTM(MiW) program, an online self-management program developed to help people with inflammatory arthritis (IA) deal with employment issues.Methods:A multi-center RCT evaluated the effectiveness of MiW at improving presenteeism and preventing work cessation (WC) over two years. Participants were recruited from rheumatologist practices, consumer organizations and arthritis programs, in three Canadian provinces. Eligibility criteria: diagnosis of IA, employed, age 18-59, and concerned about ability to work. Participants were randomized 1:1 to MiW or usual care plus printed material on workplace tips. MiW consists of five online self-learning modules and group meetings, and individual vocational counselling and ergonomic consultations. Questionnaires were administered every 6 months. Outcomes were presenteeism [Rheumatoid Arthritis Work Instability Scale (RA-WIS)], time to WC ≥ 6 months, and time to WC ≥ 2 months (secondary outcome). Baseline characteristics (age, gender, ethnicity, occupation, education, disease duration and self-employment) were collected. Intention-to-treat (ITT) longitudinal analysis of RA-WIS using linear mixed effect regression models with 2-year comparison as primary endpoint and survival analysis for time to WC using Kaplan-Meier and Cox Proportional Hazard models were performed. Robustness analyses were conducted by using various missing values imputation methods like last observation carried forward, imputation using worse possible outcomes and model-based multiple imputations; using square root transformation of RA-WIS outcome; and adjusting for baseline covariates. SAS version 9.4 was used.Results:A total of 564 participants were recruited, with 478 (84.75%) completing 2-year follow-up. Baseline characteristics were similar between groups. Mean RA-WIS scores were significantly lower in the intervention group from 6 months onwards, with the greatest difference observed at 2 years (-1.78, 95%CI: -2.7, -0.9, p < .0001), yielding a standardized effect size of 32%. Satisfactory robustness was observed. Work cessation occurred less often in intervention than control groups, but only reached statistical significance for WC ≥ 2 months (WC ≥ 6 months: 31 versus 44 events, aHR 0.70, 95%CI: 0.44, 1.11, p = 0.13; WC ≥ 2 months: 39 versus 61 events, aHR: 0.65, 95%CI: 0.43, 0.98, p = 0.04).Conclusion:Results of the RCT reveal the program was effective at improving presenteeism and preventing short-term WC. Effectiveness at preventing long-term work disability will be assessed at 5 years. This program fills one of the most important and costly unmet needs for people with inflammatory arthritis.References:[1]Carruthers EC, Rogers P, Backman CL, et al. “Employment and arthritis: making it work” a randomized controlled trial evaluating an online program to help people with inflammatory arthritis maintain employment (study protocol).BMC Med Inform Decis Mak. 2014;14:59. Published 2014 Jul 21. doi:10.1186/1472-6947-14-59Disclosure of Interests:Andre Luquini: None declared, Yufei Zheng: None declared, Hui Xie: None declared, Catherine Backman: None declared, Pamela Rogers: None declared, Alex Kwok: None declared, Astrid Knight: None declared, Monique Gignac: None declared, Dianne Mosher: None declared, Linda Li: None declared, John Esdaile: None declared, Carter Thorne Consultant of: Abbvie, Centocor, Janssen, Lilly, Medexus/Medac, Pfizer, Speakers bureau: Medexus/Medac, Diane Lacaille: None declared

scholarly journals COMmunity PARticipation through Education (COMPARE): effectiveness of supported education for students with mental health problems, a mixed methods study – study protocol for a randomized controlled trial

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Jacomijn Hofstra ◽  
Jorien van der Velde ◽  
Petra Jannette Havinga ◽  
Lies Korevaar
Keyword(s):  
Mental Health ◽  
Randomized Controlled Trial ◽  
Mixed Methods ◽  
Mental Health Problems ◽  
Controlled Trial ◽  
Health Problems ◽  
Secondary Outcome ◽  
Study Success ◽  
Randomized Controlled ◽  
Supported Education

Abstract Background The onset of mental health problems generally occurs between the ages of 16 and 23 – the years in which young people follow post-secondary education, which is a major channel in our society to prepare for a career and enhance life goals. Several studies have shown that students with mental health problems have a higher chance of early school leaving. Supported Education services have been developed to support students with mental health problems to remain at school. The current project aims to study the effect of an individually tailored Supported Education intervention on remaining at school, study success, and satisfaction of students with mental health problems studying at an institute for intermediate vocational education and a university of applied sciences in the Netherlands. Methods/design The design combines quantitative research (Randomized Controlled Trial; RCT) with qualitative research (monitoring, interviews, focus groups). One hundred students with mental health problems recruited from the two educational institutes will be randomly allocated to either the intervention or control condition. The students in the intervention condition receive the Supported Education intervention given by a Supported Education specialist, the students in the active control condition receive support as usual plus advice from a trained staff member on potential supportive resources regarding studying with mental health problems. The primary outcome ‘remaining at school’, and the secondary outcome ‘study success’ will be determined using data from the school’s administration. The secondary outcome ‘student satisfaction’ and other variables that will be studied in a more exploratory way, such as self-efficacy and study skills, will be determined through online questionnaires at baseline, at 6 and at 12 months follow-up. Focus groups and interviews with the students and Supported Education specialists will be carried out to complement the trial. Discussion This RCT is the first to assess the effect of Supported Education on remaining at school, next to study success and student satisfaction among students with mental health problems. The use of a mixed-methods design will result in a thorough evaluation of the effect of the intervention. Issues regarding the influx and possible attrition of students in the follow-up are discussed. Trial registration The study was registered with Trialregister.nl, no. NL8349, date registered: February 4th 2020. Register name: Community participation through education. Effectiveness of Supported Education for youth with mental health problems, a mixed methods study – Study protocol for a Randomized Controlled Trial. Protocol Version: 3, date: May 28th, 2021.

scholarly journals Electroacupuncture for postoperative pain after nasal endoscopic surgery: study protocol for a pilot randomized controlled trial

2020 ◽  
Author(s):  
Shanshan Li ◽  
Qing Zhang ◽  
Xuan Yin ◽  
Hongyu Yue ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Randomized Controlled Trial ◽  
Postoperative Pain ◽  
Endoscopic Surgery ◽  
Short Form ◽  
Controlled Trial ◽  
Secondary Outcome ◽  
Randomized Controlled ◽  
Pilot Randomized Controlled Trial

Abstract Background: Postoperative pain is a common disorder that interferes with the quality of sleep after nasal endoscopic surgery and delays postoperative recovery. Acupuncture is an effective tool for pain management. However, electroacupuncture specifically for the relief of postoperative pain after nasal endoscopic surgery has not yet been studied through a randomized controlled trial. Method/Design: A pilotrandomized, sham-controlled, patient- and- assessor-blind trial is designed to evaluate the efficacy and safety of electroacupuncturein managing postoperative pain following nasal endoscopic surgery of sinusitis with nasal polyps. There will be 30participants randomly allocated to an electroacupuncture or non-invasive sham control in a 1:1 ratio. Treatment will be done within 2 hours before operation, immediately after the operation upon arrival to the recovery ward, and once daily for 3 days. The primary outcome of the Pain Numerical Rating Scale (NRS) will be analyzed using the area-under-the-curve (AUC) method. The secondary outcome measures include Heart Rate (HR) and Blood Pressure (BP) after operation, the sleep quality during the hospital stay (Actigragh),Quality of Recovery-15 (QoR-15), and the MOS item short form health survey (SF-36). ITT analysis will be used in this RCT. Discussion: This pilot randomized controlled trial will explore the feasibility of further clinical application for the management of postoperative pain using electroacupuncture treatment, and it will inform the design of a further full-scale trial. Trial Registration: Chinese Clinical Trial Registry, ChiCTR1900024183, Date: 2019-06-29. URL: http://www.chictr.org.cn/showproj.aspx?proj=40573 Keywords: Electroacupuncture; postoperative pain;nasal endoscopic surgery; RCT; randomized controlled trial; clinical trial

scholarly journals A randomized controlled study to compare the efficacy of hughes abdominal repair with conventional abdominal closure-to reduce the incidence of incisional hernias in Indian population

2017 ◽  
Vol 4 (7) ◽  
pp. 2291
Author(s):  
Rajasekaran C. ◽  
Vijaykumar K. ◽  
Arulkumaran M. ◽  
Meera S. S.
Keyword(s):  
Randomized Controlled Trial ◽  
Incisional Hernia ◽  
Abdominal Wall ◽  
Controlled Trial ◽  
Secondary Outcome ◽  
Midline Laparotomy ◽  
Incisional Hernias ◽  
Abdominal Closure ◽  
Randomized Controlled ◽  
Abdominal Repair

Background: Incisional hernia forms the most common delayed morbidity following midline laparotomy surgeries- causing mental trauma to the patient impairing their quality of life and scars the name and fame of the surgeon. So, the need for possible attributes on surgeon’s aspect to prevent the incisional hernia is the need of the hour. We planned a randomized controlled trial to compare two different abdominal closure techniques to reduce the incidence of Incisional hernia following midline laparotomy incisions. We advocated Hughes abdominal repair which includes a series of two horizontal and two vertical mattresses within single suture whereby the tension load of suture is distributed both along and across the suture line.Methods: 1:1 Randomized controlled trial in which the patient is blinded and obviously operating surgeon is non-blinded. Evaluating examiner and radiologist are blinded.100 patients who underwent emergency and elective midline laparotomies were enrolled in the study and intra-operatively randomized into two groups in 1:1 pattern. Ethical clearance obtained from the Institutional ethical committee. The primary outcome measure is the incidence of burst abdomen at the end of 15 days by the evaluating surgeon (non-operated surgeon who is blinded). The secondary outcome is the incidence of incisional hernia at the end of one year-evaluated by detailed clinical examination with radiological proof using CT abdomen.Results: The incidence of incisional hernia is significantly low in Hughes abdominal repair than conventional abdominal closure.Conclusions: Hughes abdominal wall closure is superior to conventional closure in both emergency and elective laparotomy cases, in prevention of wound dehiscence and Incisional hernias later. Present study encourages us that Hughes abdominal wall repair is comparable to mesh repairs. This study needs to be continued further to a vast sample size to perfectly assess the statistical significance.

scholarly journals PREWARMING FOR PREVENTION OF PERIOPERATIVE HYPOTHERMIA IN PATIENTS WITH COMBINED EPIDURAL AND GENERAL ANESTHESIA: A RANDOMIZED CONTROLLED TRIAL

2021 ◽  
Author(s):  
Dang Tinh Pham ◽  
Thi Ngoc Le ◽  
Ton Ngoc Vu Phan ◽  
Parshal Bhandari ◽  
Sairah Zia ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
General Anesthesia ◽  
Outcome Measures ◽  
Medical Center ◽  
Controlled Trial ◽  
Secondary Outcome ◽  
Perioperative Hypothermia ◽  
Randomized Controlled ◽  
Physical Status Classification ◽  
American Society

OBJECTIVE The aim of this study was to access the influence of active warming after epidural anesthesia (EDA) and before general anesthesia in prevention of perioperative hypothermia. METHOD This randomized controlled trial was conducted in the department of anesthesiology in university medical center of Ho Chi Minh city, Vietnam from December 2019 until April 2020. This trial included 60 adult patients who were scheduled for major abdominal surgery with a duration of at least 120 minutes and under combined general anesthesia and EDA. Patients were excluded if age was below 18 years, American Society Anesthesiologists’ physical status classification of IV or higher, or refusal of EDA. Written informed consent was obtained for all patients. Patients were divided randomly into two groups. The first group received 10 minutes of active air-forced warming after EDA before the induction of general anesthesia. The second group was covered with a blanket 10 minutes after EDA and before general anesthesia. Core temperatures were recorded throughout the study. The primary outcome measures were the incidence of perioperative hypothermia and the degree of hypothermia. The secondary outcome measures were rate and time for body temperature to return to normal and incidence of postoperative body shivering. RESULTS Without active warming (n = 21), 70% of patients became hypothermic (<36°C) postoperatively. Active air-forced warming for 10 minutes after EDA and before induction of general anesthesia decreased the incidence of postoperative hypothermia to 26.7% (n = 8). CONCLUSION Active air-forced warming for 10 minutes after EDA and before induction of general anesthesia is efficient in reducing the incidence of perioperative hypothermia.

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