Juncheol Lee1, Jaehoon Oh2, Tae Ho Lim3, Hyunggoo Kang3, Jung Hwan Park4, Soon Young Song5, Ga Hye Shin5, Yeongtak Song3. 1. Department of Emergency Medicine, College of Medicine, Hanyang University, Seoul, Republic of Korea. 2. Department of Emergency Medicine, College of Medicine, Hanyang University, Seoul, Republic of Korea; Convergence Technology Centre for Disaster Preparedness, Hanyang University, Seoul, Republic of Korea. Electronic address: ojjai@hanmail.net. 3. Department of Emergency Medicine, College of Medicine, Hanyang University, Seoul, Republic of Korea; Convergence Technology Centre for Disaster Preparedness, Hanyang University, Seoul, Republic of Korea. 4. Department of Endocrinology, College of Medicine, Hanyang University, Seoul, Republic of Korea. 5. Department of Radiology, College of Medicine, Hanyang University, Seoul, Republic of Korea.
Abstract
BACKGROUND: Abdominal fatty tissue deposition in obese individuals could alter the proper hand position for chest compression during cardiopulmonary resuscitation, similar to that in pregnant women. This study aimed to identify the difference in body mass index between obese and normal weight individuals by measuring the optimal point of maximal left ventricular diameter (OPLV), using computed tomography (CT). METHODS: We performed a retrospective analysis of chest CT scans between January 2012 and August 2016 and measured the sternal length and OPLV and estimated the ratio of OPLV to that individual sternal length. We also investigated whether OPLV was within the clinically relevant range of 20 mm to the position advised by the Guidelines 2015. We compared these outcomes between the two groups. RESULTS: We randomly selected and analysed 50 of 7229 normal weight and 50 of 394 obese individuals from a database. The mean ± standard deviation of the ratio of OPLV was 22.0 ± 5.7% and 14.8 ± 6.6% of the sternal length, as measured from its most caudal point, respectively, for the obese and normal weight groups (p < 0.001). Both are more caudal than at the middle point of "the lower half of the sternum" as currently recommended. Notably, 96% of the OPLV in the obese group was within ±20 mm of the guideline point versus 52% for normal weight group. CONCLUSION: OPLV on the sternum in obese individuals was more cranial than that in normal weight individuals. The optimal point for chest compression in obese individuals could be slightly more cranial than that in the others.
BACKGROUND: Abdominal fatty tissue deposition in obese individuals could alter the proper hand position for chest compression during cardiopulmonary resuscitation, similar to that in pregnant women. This study aimed to identify the difference in body mass index between obese and normal weight individuals by measuring the optimal point of maximal left ventricular diameter (OPLV), using computed tomography (CT). METHODS: We performed a retrospective analysis of chest CT scans between January 2012 and August 2016 and measured the sternal length and OPLV and estimated the ratio of OPLV to that individual sternal length. We also investigated whether OPLV was within the clinically relevant range of 20 mm to the position advised by the Guidelines 2015. We compared these outcomes between the two groups. RESULTS: We randomly selected and analysed 50 of 7229 normal weight and 50 of 394 obese individuals from a database. The mean ± standard deviation of the ratio of OPLV was 22.0 ± 5.7% and 14.8 ± 6.6% of the sternal length, as measured from its most caudal point, respectively, for the obese and normal weight groups (p < 0.001). Both are more caudal than at the middle point of "the lower half of the sternum" as currently recommended. Notably, 96% of the OPLV in the obese group was within ±20 mm of the guideline point versus 52% for normal weight group. CONCLUSION: OPLV on the sternum in obese individuals was more cranial than that in normal weight individuals. The optimal point for chest compression in obese individuals could be slightly more cranial than that in the others.
Authors: Kyung Hun Yoo; Jaehoon Oh; Heekyung Lee; Juncheol Lee; Hyunggoo Kang; Tae Ho Lim; Soon Young Song; Solji Kim Journal: Ann Geriatr Med Res Date: 2018-09-30
Authors: Theresa M Olasveengen; Federico Semeraro; Giuseppe Ristagno; Maaret Castren; Anthony Handley; Artem Kuzovlev; Koenraad G Monsieurs; Violetta Raffay; Michael Smyth; Jasmeet Soar; Hildigunnur Svavarsdóttir; Gavin D Perkins Journal: Notf Rett Med Date: 2021-06-02 Impact factor: 0.826