Decontamination ; Disinfection ; Manikins ; Protective Clothing ; Personal Protective Equipment ; Health Personnel

OBJECTIVE: Several environmental factors influence the prehospital use of video laryngoscopes (VLs). For example, fogging of the VL lens can occur in cold environments, and the low temperature can cause the VLs to malfunction. As relevant research on the effect of environment on VLs is lacking, we aimed to study the effect of a cold environment on three commonly used VLs.METHODS: McGrath MAC, Pentax Airway Scope (AWS), and GlideScope Ranger were exposed to temperatures of -5°C, -10°C, -20°C, and -25°C for 1 hour each and then applied to a manikin in a thermohydrostat room 5 times. Immediately after turning on the power and inserting the blade, the time until an appropriate glottic image appeared on the screen was measured.RESULTS: McGrath MAC was able to accomplish immediate intubation regardless of the temperature drop. However, GlideScope Ranger required an average of 4.9 seconds (-5°C to -20°C) and 10.1 seconds (-25°C) until appropriate images were obtained for intubation. AWS showed adequate image acquisition immediately after blade insertion despite slight fogging at -20°C, but at -25°C, images suitable for intubation did not appear on the screen for an average of 4.7 minutes.CONCLUSION: All three devices appear to be usable without any limitations up to -20°C. However, GlideScope Ranger and AWS may not produce images immediately at temperatures below -25°C. Thus, medical practitioners performing VL in a cold environment should be aware of the characteristics of the VL devices in advance.
Cold Temperature ; Intubation ; Intubation, Intratracheal ; Laryngoscopes ; Manikins ; Weather

Administration, Oral ; Adult ; Animals ; Cartilage, Articular ; Chondrocytes ; Collagen ; Collagen Type II ; Glucosamine ; Humans ; Immobilization ; Knee ; Male ; Manikins ; Models, Theoretical ; Osteoarthritis ; Proteoglycans ; Rats ; Risedronate Sodium

Since the first use of the flexible fibreoptic bronchoscope, a plethora of new airway equipment has become available. It is essential for clinicians to understand the role and limitations of the available equipment to make appropriate choices. The recent 4th National Audit Project conducted in the United Kingdom found that poor judgement with inappropriate choice of equipment was a contributory factor in airway morbidity and mortality. Given the many modern airway adjuncts that are available, we aimed to define the role of flexible fibreoptic intubation in decision-making and management of anticipated and unanticipated difficult airways. We also reviewed the recent literature regarding the role of flexible fibreoptic intubation in specific patient groups who may present with difficult intubation, and concluded that the flexible fibrescope maintains its important role in difficult airway management.
Airway Management ; methods ; Airway Obstruction ; complications ; Anesthesia ; methods ; Bronchoscopy ; methods ; Equipment Design ; Fiber Optic Technology ; Humans ; Intubation, Intratracheal ; instrumentation ; methods ; Laryngoscopes ; Manikins ; Obesity ; complications ; Respiratory System ; Skull Fractures ; complications

OBJECTIVE: Healthcare providers are exposed to risky environments during prehospital transportation when they give O₂ supply to patients. This study examined the problems with risky environments during prehospital transportation and suggests safe and efficient O₂ supply methods through extension tube simulation. METHODS: Fifty-seven volunteers participated the study. The volunteer's back angle was measured during transportation simulation. This study measured the grip strength difference and forearm circumference difference in two situations. Without an extension tube and with extension tube, the participants measured the grip strength and forearm circumference before and after giving an O₂ supply to the mannequin for 5 minutes. The participants replied which body part showed the most discomfort. RESULTS: In the without extension tube group, participants leaned forward on average. On the other hand, the mean of anterior angle was 0° with an extension tube group. Without an extension tube, the grip strength decreased by whereas it decreased by with an extension tube. The decrease in grip strength was similar in both groups (P<0.05), and there was no significant difference in the forearm circumference. With the extension tube, 43.9% of participants reported no discomfort when they gave an O₂ supply. CONCLUSION: The extension tube improved the healthcare provider's safety and O₂ supply convenience during pre-hospital transportation.
Delivery of Health Care ; Emergencies ; Forearm ; Hand ; Hand Strength ; Health Personnel ; Humans ; Manikins ; Transportation ; Volunteers

OBJECTIVE: The UE Video Stylet VL400-S2 (UE Medical Devices, Newton, MA, USA) and Ambu aScope (Ambu, Copenhagen, Denmark) were recently introduced rigid video stylets and single-use fiberoptic bronchoscopes, respectively. To compare the utility of the two sets of equipment, this study conducted a randomized cross-over study using a manikin. METHODS: Twenty-eight novice doctors performed tracheal intubation on an airway trainer manikin (Laerdal, Stavanger, Norway). The sequence of intubation devices was randomized. The following data were measured and recorded: time to complete tracheal intubation (primary end point), overall success rate, time to see the glottis, and time to tube passage. RESULTS: The video stylet (24 seconds; interquartile range [IQR] 18–36) showed a significantly shorter completion time of the tracheal intubation than the fiberoptic bronchoscope (43 seconds; IQR, 32–84) (P<0.001). The overall success rate of tracheal intubation was 96.4% (27/28) in the video stylet and 82.1% (23/28) in the fiberoptic bronchoscope, and the cumulative success rate over time to complete intubation was significantly higher in the video stylet (P<0.001). CONCLUSION: The video stylet was superior to the fiberoptic bronchoscope in terms of the time to complete and the cumulative success rate of intubation for novice operators in manikin model. Further research will be needed to determine the degree of education required to use fiberoptic bronchoscopy.
Bronchoscopes ; Bronchoscopy ; Cross-Over Studies ; Education ; Glottis ; Intubation ; Intubation, Intratracheal ; Manikins ; Microscopy, Video

OBJECTIVES: The purpose of this study was factors affecting self-efficacy of cardiopulmonary resuscitation (CPR) in adults. Therefore, the provide basic data for strategy development to improve the performance rate of bystander CPR. METHODS: The data were collected from 164,165 adults of the 2016 Korean Community Health Survey. The survey method was 1:1 interview with households, and the survey period was from August 16, 2016 to October 31, 2016. The survey variables were as follows: self-efficacy of CPR, awareness of CPR, training experience of CPR, demographic characteristics, medical characteristics, health promoting behaviors, and safety practices. RESULTS: The rate of self-efficacy of CPR in adults was 60.6%. Factors affecting self-efficacy of CPR were age, sex, residence, education level, occupation, marital status, any CPR training, CPR training within the last 2 years, CPR training with manikin within the last 2 years, emergency room visit within the last 1 year, physical activity status, drive a bicycle, seat belts on rear seat, seat belts when riding a bus were statistically significant. CONCLUSIONS: In conclusion, in order to improve the self-efficacy of CPR in adults, the recent experience rate of CPR education, the practice rate of health promotion behavior, and the practice rate of safety behavior should be improved. The government should expand the provision of education programs to improve the self-efficacy of CPR and actively prepare national-level public advertisements strategies.
Adult ; Cardiopulmonary Resuscitation ; Education ; Emergency Service, Hospital ; Family Characteristics ; Health Promotion ; Health Surveys ; Humans ; Manikins ; Marital Status ; Motor Activity ; Occupations ; Seat Belts ; Surveys and Questionnaires

PURPOSE: This study aimed to evaluate the thermal protective function of firefighter clothes and gloves through real scale fire simulations. METHODS: Firstly, the fire simulation by real scale flame was performed for firefighter clothes. A manikin equipped with firefighter clothes was directly exposed to flames which energy average is 84 Kw/m2. for 22 seconds. Heat flux gauges attached on the body measured surface temperature elevation. Secondly, we also performed the other fire simulation by hot plate exposure to firefighter gloves. Firefighter gloves with heat flux gauges exposed hot plate which temperature is 300℃ in both dry and moist conditions. Primary outcome was surface temperature change of manikin body (first simulation) and hand (second simulation) over times. RESULTS: In the first flame simulation, the surface temperature of face and shoulders elevated more rapidly comparing with the other body surface area when initial period of flame shutter open. After 18sec of shutter open, the surface temperature of upper trunk elevated rapildy. After shutter closure, high surface temperature kept continuously on right side of face and left shoulder. In the second hot plate simulation, fingers and palms showed higher surface temperature than the other areas of hands in the both dry and wet conditions. CONCLUSION: This study suggests that the real scale flame enables firefighter clothes to lose their heat protective function suddenly after 18 seconds. Additionally, the protective function of firefighter gloves were relatively weaker in the palmar side of fingers than the other parts of hand. There should be additional study for evaluate thermal protection performance of firefighter clothes. And, further effort for reinforce palmar side of fingers of firefighter gloves should be done.
Body Surface Area ; Clothing* ; Fingers ; Firefighters* ; Fires ; Hand ; Hot Temperature ; Humans ; Manikins ; Patient Simulation ; Shoulder

PURPOSE: Tracheal intubation in a hemorrhagic airway is a difficult procedure because the visibility can be obscured by blood or vomitus. Several devices and methods have been developed to overcome such obstacles, but they are not available at all practical sites. Therefore, this study was conducted to assess the time and success rate of tracheal intubation according to the type of suction tip used in a hemorrhagic airway manikin model. METHODS: This study was a randomized crossover manikin simulation study. We recruited 18 emergency physicians to perform intubation with suction using a Yankauer suction tip and a polyvinyl chloride (PVC) catheter suction tip in a hemorrhagic airway manikin model. We then measured the time and success rate of intubation for each suction tip. RESULTS: The mean intubation time using the Yankauer suction tip was 42.3 seconds, and the mean intubation time using the PVC catheter suction tip was 91.1 seconds (p < 0.001). Two cases of esophageal intubation occurred when the PVC catheter suction tip was used (success rate, 88.9%). In contrast, there was no esophageal intubation when the Yankauer suction tip was used (success rate, 100%) (p=0.217). CONCLUSION: Intubation of a hemorrhagic airway manikin model can be performed in a shorter time when a Yankauer suction tip is used than when a PVC catheter suction tip is used.
Catheters ; Emergencies ; Hemorrhage ; Intubation ; Manikins ; Polyvinyl Chloride ; Polyvinyls ; Suction

OBJECTIVES: The current study aims to develop Korean Social Affective Visual Stimuli (K-SAVS) to arouse social affect. METHODS: K-SAVS is composed of pictures of social situations among East Asians. Each picture contains a negative, positive, or neutral affect. Positive and negative stimuli were presented to one group of subjects. Negative and neutral stimuli were presented to another group of subjects. All subjects were required to fill out Affective Valence and Arousal Manikin. RESULTS: In the initial test, 18 positive affective stimuli pictures (1 set) and 36 negative affective stimuli pictures (2 sets) were chosen from 95 stimuli pictures. Positive affective stimuli pictures showed higher valence (p < 0.001) and lower arousal (p < 0.001) than negative affective stimuli pictures. In the confirmatory test, 18 neutral stimuli pictures (1 set) were additionally selected out of the total of 79 pictures of neutral stimuli pictures and the pictures used in the former experiment. Neutral stimuli pictures showed higher valence (p < 0.001) and lower arousal (p < 0.001) than negative affective stimuli pictures. CONCLUSION: K-SAVS can be a valid and useful tool for inducing specific social affects of Koreans.
Arousal ; Asian Continental Ancestry Group ; Humans ; Manikins