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Treatment of ankylosed maxillary central incisors by segmental osteotomy with autogenous bone graft. Treatment of ankylosed maxillary central incisors by segmental osteotomy with autogenous bone graft. Treatment of ankylosed maxillary central incisors by segmental osteotomy with autogenous bone graft. Treatment of ankylosed maxillary central incisors by segmental osteotomy with autogenous bone graft.

Title
 Treatment of ankylosed maxillary central incisors by segmental osteotomy with autogenous bone graft. Treatment of ankylosed maxillary central incisors by segmental osteotomy with autogenous bone graft. Treatment of ankylosed maxillary central incisors by segmental osteotomy with autogenous bone graft. Treatment of ankylosed maxillary central incisors by segmental osteotomy with autogenous bone graft. 
Authors
 Jung Soo Lim ; Yong Chul Cho ; Seung Whan Kim ; Kwoen Yu ; Sung Pil Chung ; O Yu Kwon 
Issue Date
2012
Journal Title
 American Journal of Emergency Medicine 
ISSN
 0735-6757 
Citation
 American Journal of Emergency Medicine, Vol.30(7) : 1068~1071, 2012 
Abstract
OBJECTIVES: The efficacy of a modified bag-valve mask (BVM) with a ventilation rate alarm system was compared with conventional BVM to maximize adequate minute ventilation volume delivery in a manikin model. METHODS: After a 30-minute instructional session on how to use the 2 types of BVM, volunteers were randomly assigned to ventilate a manikin in a 2-minute arrest simulation using 2 different types of BVM. The manikin cardiopulmonary resuscitation was performed with a mechanical chest compression device, to which we added a rate alarm, which makes a ticking sound to indicate each second and buzzes every sixth second, to ensure a regular ventilation rate (10 breaths per minute). Fifty-two volunteers attempted to squeeze the classic BVM at a rate of 8 to 10 times per minute during 2-minute trial (volume marked BVM [VBVM]). After a 1-hour break, artificial ventilation was performed at a rate of 9 times per minute with the guidance of the rate alarm (rate and volume adjusted BVM [RVBVM]). RESULTS: There were no correlations between the data and the participants' physical characteristics or levels of training. In this study, the accuracy of minute ventilation between the 2 groups showed a significant difference (P < .001). The minute ventilation rate was constant in the RVBVM group, whereas in the VBVM group, the minute ventilation rate was irregular. CONCLUSION: In a manikin arrest model, the use of RVBVM results in a more constant and regular minute tidal ventilation rate than the use of VBVM and is, therefore, expected to produce more favorable outcomes in practical resuscitative situations.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/89420
DOI
10.1016/j.ajem.2011.07.003
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Emergency Medicine
Yonsei Authors
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Link
 http://www.sciencedirect.com/science/article/pii/S0735675711003202
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