|Evaluation of respiratory dysfunction in a pig model of severe acute dichlorvos poisoning|
|He Xin-hua1; Wu Jun-yuan1; Li Chun-sheng1; Su Zhi-yu2; Ji Xian-fei3; Han Yi4; Wang Sheng-qi5; Zhang Jian1|
|关键词||Dichlorvos Respiratory Dysfunction Acute Dichlorvos Poisoning Pulse Contour Cardiac Output Extravascular Lung Water Index|
|刊名||CHINESE MEDICAL JOURNAL|
|WOS标题词||Science & Technology|
|类目[WOS]||Medicine, General & Internal|
|研究领域[WOS]||General & Internal Medicine|
|关键词[WOS]||EXTRAVASCULAR LUNG WATER ; CRITICALLY ILL PATIENTS ; TRANSPULMONARY THERMODILUTION ; CONTROLLED-TRIAL ; PULMONARY-EDEMA ; SEPSIS ; MANAGEMENT ; FAILURE ; HEALTH ; INJURY|
Background Respiratory failure is the main cause of death in acute organophosphorus pesticide poisoning. In this study, a pulse-induced contour cardiac output monitor was used to evaluate the respiratory status in a pig model of acute dichlorvos poisoning.
Methods Twenty female pigs were randomly allocated to dichlorvos (n=7), atropine (n=7), and control (n=6) groups. In the dichlorvos group, pigs were administered 80% emulsifiable dichlorvos (100 mg/kg) via a gastric tube. In the atropine group, pigs were similarly administered dichlorvos, and 0.5 hours later, atropine was injected to attain and maintain atropinization. The control group was administered saline solution. Arterial blood gas was measured at 0, 0.5, 1, 2, 4, and 6 hours post-injection. The extravascular lung water index and pulmonary vascular permeability index were recorded by the pulse-induced contour cardiac output monitor. At termination of the study, the animals were euthanized, the lung wet-to-dry weight ratio was determined, and histopathology was observed.
Results In the dichlorvos group, the extravascular lung water index and pulmonary vascular permeability index were substantially increased from 0.5 hours and were particularly high within 1 hour. In the atropine group, these indices increased initially, but decreased from the 1-hour mark. The control group exhibited no obvious changes. In both the dichlorvos and atropine groups, the extravascular lung water index was negatively correlated with partial pressure of oxygen/fraction of inspiration oxygen (PO2/FiO(2)) and positively correlated with the pulmonary vascular permeability index. Compared with the control group, the lung wet-to-dry weight ratio markedly increased and the histopathological findings obviously changed in the dichlorvos group, but only mildly increased and changed, respectively, in the atropine group.
Conclusion The extravascular lung water index is an appropriate and valuable parameter for assessment of respiratory function in acute dichlorvos poisoning. Chin Med J 2012;125(20):3612-3618
|作者单位||1.Capital Med Univ, Beijng Chaoyang Hosp, Dept Emergency Med, Beijing 100020, Peoples R China|
2.Peking Univ, Dept Emergency Med, Peoples Hosp, Beijing 100044, Peoples R China
3.Shandong Prov Hosp, Dept Emergency Med, Jinan 250021, Shandong, Peoples R China
4.Fudan Univ, Zhongshan Hosp, Dept Emergency Med, Shanghai 200032, Peoples R China
5.Capital Med Univ, Xuanwu Hosp, Dept Emergency Med, Beijing 100053, Peoples R China
|He Xin-hua,Wu Jun-yuan,Li Chun-sheng,et al. Evaluation of respiratory dysfunction in a pig model of severe acute dichlorvos poisoning[J]. CHINESE MEDICAL JOURNAL,2012,125(20):3612-3618.|
|APA||He Xin-hua.,Wu Jun-yuan.,Li Chun-sheng.,Su Zhi-yu.,Ji Xian-fei.,...&Zhang Jian.(2012).Evaluation of respiratory dysfunction in a pig model of severe acute dichlorvos poisoning.CHINESE MEDICAL JOURNAL,125(20),3612-3618.|
|MLA||He Xin-hua,et al."Evaluation of respiratory dysfunction in a pig model of severe acute dichlorvos poisoning".CHINESE MEDICAL JOURNAL 125.20(2012):3612-3618.|