The effectiveness of visual-based interventions on health literacy in health care: a systematic review and meta-analysis.

BACKGROUND: Limited Health Literacy (HL) is an obstacle to accessing and receiving optimal health care and negatively impacts patients' quality of life, thus making it an urgent issue in the health care system. Visual-based interventions are a promising strategy to improve HL through the use of visual aids and pictorial materials to explain health-related concepts. However, a comprehensive summary of the literature on the topic is still scarce. METHODS: To fill this gap, we carried out a systematic review and meta-analysis with the aim to determine the effectiveness of visual-based interventions in improving comprehension of health related material in the clinical population. Independent studies evaluating the effectiveness of visual-based interventions on adults (> 18 years) and whose primary outcome was either health literacy (HL) or comprehension were eligible for the review. After a systematic literature search was carried out in five databases, 28 studies met the inclusion criteria and thus were included. Most of the studies were randomized controlled trials and they focused on HL and health knowledge as outcomes. RESULTS: The review and meta-analysis showed that visual-based interventions were most effective in enhancing the comprehension of health-related material compared to traditional methods. According to meta-analytic results, videos are more effective than traditional methods (Z = 5.45, 95% CI [0.35, 0.75], p < 0.00001) and than the employment of written material (Z = 7.59, 95% CI [0.48, 0.82], p < 0.00001). Despite this, no significant difference was found between video and oral discussion (Z = 1.70, 95% CI [-0.46, 0.53], p = 0.09). CONCLUSIONS: We conclude that visual-based interventions, particularly the ones using videos, are effective for improving HL and the comprehension of health-related material.

The good lecture.

Postgraduate medical education often relies on the traditional lecture model with low knowledge retention rates of 5-20%. Cognitive overload from excessive information during lectures diminishes learning efficacy. To optimise learning, evidence suggests prioritising active engagement, streamlining visual aids, introducing clinical scenarios, and incorporating audience response systems may further enhance retention and comprehension. In conclusion, the traditional lecture must evolve into more interactive and engaging modalities to facilitate increased participant long-term learning as summarised in this review.

The impact of audiovisual breathing guidance on respiratory-triggered cardiac magnetic resonance cine imaging.

BACKGROUND: In patients who have difficulty holding their breath, a free breathing (FB) respiratory-triggered (RT) bSSFP cine technique may be used. However, this technique may have inferior image quality and a longer scan time than breath-hold (BH) bSSFP cine acquisitions. This study examined the effect of an audiovisual breathing guidance (BG) system on RT bSSFP cine image quality, scan time, and ventricular measurements. METHODS: This study evaluated a BG system that provides audiovisual instructions and feedback on the timing of inspiration and expiration to the patient during image acquisition using input from the respiratory bellows to guide them toward a regular breathing pattern with extended end-expiration. In this single-center prospective study in patients undergoing a clinical cardiac magnetic resonance examination, a ventricular short-axis stack of bSSFP cine images was acquired using 3 techniques in each patient: 1) FB and RT (FBRT), 2) BG system and RT (BGRT), and 3) BH. The 3 acquisitions were compared for image quality metrics (endocardial edge definition, motion artifact, and blood-to-myocardial contrast) scored on a Likert scale, scan time, and ventricular volumes and mass. RESULTS: Thirty-two patients (19 females; median age 21 years, IQR 18-32) completed the study protocol. For scan time, BGRT was faster than FBRT (163 s vs. 345 s, p < 0.001). Endocardial edge definition, motion artifact, and blood-to-myocardial contrast were all better for BGRT than FBRT (p < 0.001). Left ventricular (LV) end-systolic volume (ESV) was smaller (3%, p = 0.02) and LV ejection fraction (EF) was larger (0.5%, p = 0.003) with BGRT than with FBRT. There was no significant difference in LV end-diastolic volume (EDV), LV mass, right ventricular (RV) EDV, RV ESV, and RV EF. Scan times were shorter for BGRT compared to BH. Endocardial edge definition and blood-to-myocardial contrast were better for BH than BGRT. Compared to BH, the LV EDV, LV ESV, RV EDV, and RV ESV were mildly smaller (all differences <7%) for BGRT. CONCLUSIONS: The addition of a BG system to RT bSSFP cine acquisitions decreased the scan time and improved image quality. Further exploration of this BG approach is warranted in more diverse populations and with other free breathing sequences.

Evaluation of parental anxiety following three methods of pre-anesthesia counseling: Video, brochure and verbal communication.

BACKGROUND: The purpose of this study is to provide comprehensive and efficient pre-anesthesia counseling (PAC) utilizing audiovisual aids and to examine their effect on parental anxiety. METHODS: For this prospective, controlled study, 174 parents were recruited and randomized into three groups of 58 (Group A: video, Group B: brochure, and Group C: verbal). During pre-anesthesia counseling, the parent was provided with a detailed explanation of preoperative preparation, fasting instructions, transport to the operating room, induction, the emergence of anesthesia, and nursing in the post-anesthesia care unit based on their assigned group. We evaluated parental anxiety using Spielberger's State-Trait Anxiety Inventory before and after the pre-anesthesia counseling. RESULTS: The results of our study show a statistically significant difference in the final mean STAI scores among the three groups (Group A: 34.69 ± 5.31, Group B: 36.34 ± 8.59, and Group C: 43.59 ± 3.39; p < .001). When compared to the brochure and verbal groups, the parents in the video group have the greatest difference in mean baseline and final Spielberger's State-Trait Anxiety Inventory scores (12.207 ± 5.291, p .001). CONCLUSION: The results of our study suggest that pre-anesthesia counseling by video or a brochure before the day of surgery is associated with a higher reduction in parental anxiety when compared to verbal communication.

An exploration of the (3+1)-dimensional negative order KdV-CBS model: Wave solutions, Bäcklund transformation, and complexiton dynamics.

This research paper focuses on the study of the (3+1)-dimensional negative order KdV-Calogero-Bogoyavlenskii-Schiff (KdV-CBS) equation, an important nonlinear partial differential equation in oceanography. The primary objective is to explore various solution techniques and analyze their graphical representations. Initially, two wave, three wave, and multi-wave solutions of the negative order KdV CBS equation are derived using its bilinear form. This analysis shed light on the behavior and characteristics of the equation's wave solutions. Furthermore, a bilinear Bäcklund transform is employed by utilizing the Hirota bilinear form. This transformation yields exponential and rational function solutions, contributing to a more comprehensive understanding of the equation. The resulting solutions are accompanied by graphical representations, providing visual insights into their structures. Moreover, the extended transformed rational function method is applied to obtain complexiton solutions. This approach, executed through the bilinear form, facilitated the discovery of additional solutions with intriguing properties. The graphical representations, spanning 2D, 3D, and contour plots, serve as valuable visual aids for understanding the complex dynamics and behaviors exhibited by the equation's solutions.

Visual supplementation is an effective tool in cataract surgery counselling by eye-care practitioners.

BACKGROUND: Informed consent constitutes an important aspect of eye care. However, patients often experience difficulties understanding and retaining information presented to them during consultations. This study investigates the efficacy of pictorial aids in supplementing preoperative counselling of patients undergoing cataract surgery. METHODS: Patients attending routine pre-cataract surgery counselling were randomized to receive either a standard verbal consultation (control) or a verbal consultation with a digitalized pictorial aid illustrating key surgical steps (intervention). Patients were assessed after the consultation on their knowledge, satisfaction, anxiety and preparedness using an anonymous questionnaire. RESULTS: Seventy-six patients were recruited and randomized into the control and intervention groups. The intervention group attained better Knowledge Scores (control: 5 [2-6] vs. intervention: 6 [6]), and more patients "strongly agreed" that they were more prepared (control: 78.9% vs. intervention: 97.4%, P=0.028). A higher proportion of patients in the control group either "disagreed" or "neither disagree nor agreed (neutral)" that they were less worried (control: 15.8% vs. intervention: 0.0%, Fisher's Exact Test P=0.025). Although the consultation duration was shorter in the intervention group (21±4mins vs. 27±6mins, P<0.001), the use of digital pictorial aids during consultation resulted in more effective counselling with increased patient knowledge, easier decision-making process and reduced patient anxiety. CONCLUSION: Pictorial aids add to the repository of tools available to eye-care practitioners and are low-cost, easy to implement, and can effectively augment existing preoperative counselling processes to ensure accurate and effective preoperative counselling of patients.

Use of audio-visual aids and case studies to enhance understanding of family medicine among medical students.

Teaching family medicine to medical students is primarily intended to aid in their understanding of the distinctive and significant role that the speciality performs within the healthcare system. Improving medical students' comprehension of family medicine may have an impact on their decision to pursue family medicine as a speciality. It is important to use innovative evidence-based teaching and learning strategies and ensure that medical students receive extra learning opportunities in family medicine. This is a short report highlighting the use of audio-visual aids and case studies to enhance the understanding of family medicine principles among undergraduate medical students attending a private university in Ghana.Contribution: This short report offers family medicine teachers and educators at the undergraduate level an example of how to apply audio-visual aids and case studies to enhance the understanding of family medicine principles among students. The report contributes to the growth of family medicine as a speciality within the African context.

Culturally Adapted Dental Visual Aids Effect on Behavior Management during Dental Visits in Children with Autism Spectrum Disorder.

AIM: Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by unique behavioral patterns, treating children with ASD in the dental clinic has been a great challenge due to their behavior. This study aims to determine the effectiveness of culturally adapted dental visual aids in modifying behavior patterns during dental visits in children with ASD. MATERIALS AND METHODS: A controlled, blinded, randomized, clinical trial, with 64 children diagnosed with ASD, were randomly divided into two groups. The study took place between January 2019 and January 2021. The experimental group was provided with culturally adapted dental visual aids created especially for this research and the control group was provided with universal dental visual aids. The children's behavior patterns were evaluated before and after using the dental visual aids. SPSS v.25 was used to process all the data. RESULTS: Behavior patterns have modified significantly in the experimental group (p < 0.001) however, it was statistically insignificant in the control group (p = 0.077). In terms of behavioral patterns, the experimental group outperformed the control group significantly (p < 0.001). CONCLUSION: The culturally adapted dental visual aids have shown effectiveness in modifying behavior patterns in children diagnosed with ASD during dental visits. CLINICAL SIGNIFICANCE: By evaluating the impact of culturally adapted visual aids on behavior management, the study can enhance the accessibility and effectiveness of dental care for this vulnerable population, ultimately promoting better oral health outcomes and reducing potential trauma associated with dental visits for children with ASD. How to cite this article: Aljubour AA, AbdElBaki M, El Meligy O, et al. Culturally Adapted Dental Visual Aids Effect on Behavior Management during Dental Visits in Children with Autism Spectrum Disorder. J Contemp Dent Pract 2024;25(1):20-28.

Patient information videos via QR codes: An innovative and sustainable approach in ophthalmology.

BACKGROUND: We explore an innovative approach by transforming patient information leaflet (PILs) into Quick Response (QR) code linked patient information videos (PIVs) in ophthalmology. Our objectives are to assess the subjective utility of a PIV on glaucoma and analyse the use of QR codes as a delivery method. METHODS: A prospective study was conducted in Ninewells Hospital, NHS Tayside. A glaucoma PIV was created and linked to a QR code provided to 130 glaucoma patients. Pre- and post-video questionnaires evaluated the patients' perception of using a QR code and subjective improvement in their understanding of glaucoma. RESULTS: Out of 102 responses collected, 55% of patients had no prior experience with QR codes. However, 81% of patients were able to watch the PIV. The average view duration of the video was 3:26, with 82.5% view retention. Statistically significant improvement in glaucoma knowledge was observed across all six areas questioned (p < 0.001) using a 5-point Likert scale. Overall, 70% of patients preferred PIVs over PILs, and 77% acknowledged that PIVs could be a sustainable alternative. CONCLUSION: QR codes for delivering PIVs were well-received, with patients finding them easy to use. Our PIV on glaucoma effectively enhanced patients' understanding of the condition.

The Influence of Audiovisual Distraction on Pain Reduction During Transcatheter Aortic Valve Implantation Under Monitored Anesthesia Care: A Prospective Randomized Trial.

OBJECTIVES: To investigate the effect of an audiovisual distraction system on the dose of remifentanil for perioperative sedation during transcatheter aortic valve implantation under monitored anesthesia care. DESIGN: Single-center prospective randomized nonblinded study. SETTING: Tertiary referral academic hospital. PARTICIPANTS: Ninety patients who underwent transfemoral transcatheter aortic valve implantation between July 2019 and July 2021. INTERVENTIONS: Patients were randomized to use either a novel audiovisual distraction system during the intervention (n = 45) or standard care without an audiovisual distraction system (n = 45). MEASUREMENTS AND MAIN RESULTS: Standardized questionnaires were given to each patient at admission and before and after the intervention to assess their levels of anxiety. Primary endpoints were the average and peak infusion rates of remifentanil. All patients were considered for the final analysis according to an intention-to-treat design. No relevant differences in pre- and postinterventional anxiety status were observed between the groups. Similarly, there were no significant differences in reported pain scores (p = 0.364). The average infusion rate (p = 0.028) and peak infusion rate (p = 0.025) of remifentanil were lower in the group with an audiovisual distraction system. CONCLUSIONS: Audiovisual distraction is a useful adjunct to reduce the dose of remifentanil under monitored anesthesia care during transcatheter aortic valve implantation. Larger studies are needed to evaluate potential positive effects on patient satisfaction, incidence of delirium, and possible economic benefits.

The status quo of short videos as a source of health information regarding bowel preparation before colonoscopy.

Background: For high-quality colonoscopies, adequate bowel preparation is a prerequisite, closely associated with the diagnostic accuracy and therapeutic safety of colonoscopy. Although popular-science short videos can help people quickly access health information, the overall quality of such short videos as a source of health information regarding bowel preparation before colonoscopy is unclear. Therefore, we intend to conduct a cross-sectional study to investigate the quality of bowel preparation information before colonoscopy through short videos taken on TikTok and Bilibili. Methods: The Chinese phrases "colonoscopy" and "bowel preparation" were used as keywords to search for and screen the top 100 videos in the comprehensive rankings on TikTok and Bilibili. The Global Quality Score (GQS) and the modified DISCERN score were used to assess the quality of the information provided in these short videos. Results: A total of 186 short videos were included in this study; 56.5% of them were posted by health professionals, whereas 43.5% of them were posted by nonhealth professionals. The overall quality of these videos was unsatisfactory, with a median DISCERN score of 3 (2-4) and a median GQS of 3 (3-4). The radar maps showed that videos posted by gastroenterologists had higher completeness scores regarding outcomes, management, and risk factors, while nongastroenterologists had higher completeness scores concerning adverse effects, symptoms, and definitions of bowel preparation. Additionally, the median DISCERN score and GQS of the videos posted by gastroenterologists were 3 (3-4) and 3 (3-4), respectively, whereas the quality of the videos posted by patients was the worst, with a median DISCERN score of 2 (1-2) and a median GQS of 2 (1.25-3). Conclusion: In conclusion, the overall quality of health information-related videos on bowel preparation before colonoscopy posted on specified short video platforms was not satisfactory. Gastroenterologists provide more information on the outcomes, management, and risk factors for bowel preparation before colonoscopy, while nongastroenterologists focus on adverse effects, symptoms, and definitions of bowel preparation.

Words and numbers: a comparative study of medical and journalism students' descriptors of risk, numeracy and preferences for health risk communication.

BACKGROUND: Given the complementary roles of health professionals and journalists in communicating health risks to patients and the public, there have been calls for physicians to work with journalists to improve the quality of health information received by the public. Understanding the preferences of medical and journalism students for the way in which health risks are communicated and their understanding of words used to describe risk is an important first step to inform interdisciplinary learning. METHODS: Medical and journalism students (n = 203) completed an online survey where they were given qualitative descriptors of risk such as 'a chance', 'probably' and 'unlikely', and asked to assign a number that represents what the word means to them. Different formats of communicating risk (percentages, natural frequency and visual aids) were provided and students were asked to select and explain their preference. A thematic analysis of reasons was conducted. Numeracy and perceived mathematics ability were measured. RESULTS: Numbers assigned to the descriptor 'A chance' had the highest variability for medical students. Numbers assigned to the descriptor 'Probably' had the highest variability for journalism students. Using visual aids was the most popular format for risk communication for both courses (56% of medical students and 40% of journalism students). Using percentages was twice as popular with journalism students compared to medical students (36% vs. 18%). Perceived mathematics ability was lower in students with a preference for natural frequencies and in journalism students, however performance on an objective numeracy scale was similar for all three formats (percentages, natural frequency and visual aids). Reasons for choosing a preferred format included good communication, eliciting a response, or learning style. CONCLUSIONS: Education on health risk communication for medical and journalism students should emphasize the need for qualitative descriptors of risk to be combined with the best available number. Students are already considering their role as future communicators of health risks and open to tailoring the mode of presentation to their audience. Further research is required on the design and evaluation of interdisciplinary workshops in health risk communication for medical and journalism students to maximise the opportunities for future inter-professional working.

Developing and assessing the use of demonstration videos in the preclinical simulation laboratory.

PURPOSE: This study aims to report the development of a preclinical simulation laboratory Demonstration Video Series (DVS) for the 2021-2022 academic year, measure its usage and usefulness, and compare these findings to the usage and usefulness of the existing didactic lecture videos. METHODS: The DVS videos were intended to be viewed before each preclinical simulation laboratory session along with the pre-existing didactic lectures (DL) by University of California San Francisco (UCSF) learners. Usage measurements included the percentage of the class that viewed each video, the number of views that each video received, and the average duration of each video that was watched. Usefulness of the videos was measured by a survey that assessed learner perspective on knowledge and ability to apply that knowledge during the simulation lab exercises. Both usage and usefulness of the DVS were then compared to the usage and usefulness of the DL. Both descriptive statistics and independent sample hypothesis tests were performed to compare the differences in proportion between DVS and DL mediums. RESULTS: Statistically significant differences were found in terms of both usage and usefulness of the DVS compared to the DL, with DVS being utilized more overall. With an 81% response rate, survey analysis revealed statistically significant differences among the learners' perspectives on the usefulness of the DVS compared to the DL, with a clear preference for the DVS over the DL and an overwhelmingly positive perception of the DVS. CONCLUSION: The DVS was found to be a valuable addition to the preclinical laboratory sessions for first-year learners.

Validação do conteúdo de um recurso audiovisual para pessoas vivendo com HIV / Validación del contenido de un recurso audiovisual para personas que viven con el VIH / Content validation of an audiovisual resource for people living with HIV

Resumo Objetivo Validar o conteúdo do roteiro de um recurso audiovisual para pessoas vivendo com HIV. Métodos Estudo metodológico com abordagem quantitativa, norteado pelo referencial teórico metodológico da psicometria. A validação de conteúdo foi realizada por juízes especialistas na área temática usando a técnica Delphi. A amostra foi composta por 22 juízes na primeira análise de validação e sete juízes na segunda análise. Resultados Todos domínios analisados apresentaram coeficiente de validade de conteúdo (CVC) >0,80, com CVC total (CVCt) de 0,96, consistência interna quase perfeita, Alfa de Cronbach de 0,988, ICC de 0,982 [IC95% 0,969-0,991] e p<0,005 significativo na primeira rodada de avaliação dos especialistas. Na segunda análise, os critérios usados para validação de conteúdo apresentaram CVCt de 0,97, com os critérios de objetividade, simplicidade, clareza, relevância, precisão, variedade, credibilidade e equilíbrio, atingindo 100% de aprovação. Conclusão O roteiro foi validado quanto ao conteúdo, mostrando ser um instrumento representativo e pertinente para construção do recurso audiovisual. Ele contribui para o avanço do conhecimento científico pois apresenta resultados com rigor metodológico, com inovações no campo da educação em saúde para pessoas vivendo com HIV.

Resumen Objetivo Validar el contenido del guion de un recurso audiovisual para personas que viven con el VIH Métodos Estudio metodológico con enfoque cuantitativo, norteado por el marco referencial teórico metodológico de la psicometría. La validación de contenido fue realizada por jueces especialistas en el área temática mediante el uso del método Delphi. La muestra estuvo compuesta por 22 jueces en el primer análisis de validación y siete jueces en el segundo análisis. Resultados Todos los dominios analizados presentaron coeficiente de validez de contenido (CVC) >0,80, con un CVC total (CVCt) de 0,96, consistencia interna casi perfecta, Alfa de Cronbach de 0,988, ICC de 0,982 [IC95 % 0,969-0,991] y p<0,005 significativo en la primera ronda de evaluación de los especialistas. En el segundo análisis, los criterios usados para la validación de contenido presentaron un CVCt de 0,97, con los criterios de objetividad, simplicidad, claridad, relevancia, precisión, variedad, credibilidad y equilibrio, con un 100 % de aprobación. Conclusión Se validó el guion en cuanto al contenido, lo que demuestra que es un instrumento representativo y pertinente para la elaboración del recurso audiovisual. Contribuye al avance del conocimiento científico ya que presenta resultados con rigor metodológico, con innovaciones en el campo de la educación para la salud para personas que viven con el VIH.

Abstract Objective The study aimed to validate the script content of an audiovisual resource for people living with HIV. Methods This methodological study had a quantitative approach and was guided by the methodological theoretical framework of psychometrics. Content validation was performed by expert judges in the thematic area using the Delphi technique. The sample consisted of 22 judges in the first validation analysis and seven judges in the second analysis. Results All domains analyzed had a content validity coefficient (CVC) >0.80, with a total CVC (CVCt) of 0.96, almost perfect internal consistency, Cronbach's alpha of 0.988, ICC of 0.982 [95%CI 0.969-0.991], and p<0.005 which was significant in the first round of expert evaluation. In the second analysis, the criteria used for content validation showed a CVCt of 0.97, with the criteria of objectivity, simplicity, clarity, relevance, accuracy, variety, credibility, and balance achieving 100% approval. Conclusion The script was validated in terms of content, showing to be a representative and relevant instrument for building the audiovisual resource. It contributes to the advancement of scientific knowledge as it presents results with methodological accuracy and innovations in the field of health education for people living with HIV.

Educational video for teaching safe practices in the perioperative period: randomized controlled trial / Video educativo para enseñanza de prácticas seguras en el perioperatorio: ensayo clínico aleatorizado / Vídeo educativo para ensino de práticas seguras no perioperatório: ensaio clínico randomizado

Objective: to assess the effectiveness of an educational video on hospitalized patients' knowledge of safe practices in the perioperative period. Method: randomized, double-blind controlled trial carried out in a teaching hospital in the countryside of Minas Gerais. 100 participants undergoing elective orthopaedic surgery were randomly allocated (50 participants in the experimental group and 50 participants in the control group). Patient knowledge was assessed using a questionnaire constructed by the researchers and validated by specialists, before and after the intervention (educational video) or standard guidelines were applied. Descriptive statistics were used for quantitative variables and Student's t-test for independent samples to analyze the mean difference in knowledge between the experimental and control groups (α = 0.05). Results: 100 participants took part in the study, 50 participants in the experimental group and 50 participants in the control group. The experimental group showed a significantly higher gain in knowledge (t =3.72 ±1.84; p<0.001) than the control group. Cohen's d was 1.22, indicating a large magnitude of the effect. Conclusion: the educational video was effective in improving patients' knowledge and can contribute to nurses in the practice of health education, optimizing time and disseminating knowledge about safe practices in the perioperative period. Brazilian Registry of Clinical Trials (REBEC): RBR-8x5mfq.

Objetivo: evaluar la efectividad de un video educativo en el conocimiento de pacientes hospitalizados sobre las prácticas seguras en el período perioperatorio. Método: ensayo clínico aleatorizado, doble ciego, realizado en un hospital docente en el interior de Minas Gerais. Se asignaron aleatoriamente 100 pacientes sometidos a cirugía ortopédica electiva (50 en el grupo experimental y 50 en el control). El conocimiento del paciente se evaluó mediante un cuestionario, construido por los investigadores y validado por especialistas, antes y después de la aplicación de la intervención (video educativo) o instrucciones estándar. Se adoptó estadística descriptiva para variables cuantitativas y prueba t de Student para muestras independientes en el análisis de la media de la diferencia de conocimiento entre los grupos experimental y control (α = 0,05). Resultados: participaron en el estudio 100 pacientes, 50 en el grupo experimental y 50 en el control. El grupo experimental mostró una ganancia de conocimiento significativamente superior ( t =3.72 ±1,84; p <0,001) al grupo control. Se obtuvo un d de Cohen de 1,22, indicando una gran magnitud del efecto. Conclusión: el video educativo fue efectivo en mejorar el conocimiento de los pacientes y puede contribuir con el enfermero, en la práctica de educación en salud, en la optimización del tiempo y en la difusión del conocimiento sobre las prácticas seguras en el perioperatorio. Registro Brasileño de Ensayos Clínicos (REBEC): RBR-8x5mfq.

Objetivo: avaliar a efetividade de um vídeo educativo no conhecimento de pacientes hospitalizados acerca das práticas seguras no período perioperatório. Método: ensaio clínico randomizado, duplo-cego, realizado em hospital de ensino no interior de Minas Gerais. Foram alocados aleatoriamente 100 pacientes submetidos à cirurgia ortopédica eletiva (50 no grupo experimental e 50 no controle). O conhecimento do paciente foi avaliado por meio de questionário, construído pelos pesquisadores e validado por especialistas, antes e após a aplicação da intervenção (vídeo educativo) ou orientações-padrão. Adotou-se estatística descritiva para variáveis quantitativas e teste t de Student para amostras independentes na análise da média da diferença do conhecimento entre os grupos experimental e controle (α = 0,05). Resultados: participaram do estudo 100 pacientes, 50 no grupo experimental e 50 no controle. O grupo experimental apresentou ganho de conhecimento significativamente superior ( t =3.72 ±1,84; p <0,001) ao grupo controle. Obteve-se d de Cohen de 1,22, indicando grande magnitude do efeito. Conclusão: o vídeo educativo foi efetivo na melhora do conhecimento dos pacientes e pode contribuir com o enfermeiro, na prática de educação em saúde, na otimização do tempo e na disseminação do conhecimento quanto às práticas seguras no perioperatório. Registro Brasileiro de Ensaios Clínicos (REBEC): RBR-8x5mfq.