The Clinical Research Of The Efficacy And Safety Of Different Ways Of Chest Compressions For Cardiac Arrest Rescue

Cardiac arrest refers to the sudden stopping of the mechanical heart movement caused by a variety of reasons, and then the heart function is suddenly terminated. It is necessary to take effective and emergency measures. It is the method of manual chest compressions assisted by artificial respiration that saved many patients’ lives. It is emphasized that the importance of continue chest compressions in 2010 America Heart Association Guidelines For Cardiopulmonary Resuscitation And Emergency Cardiovascular Care. It is required that the chest compressions should be preformed continuously, effectively, quickly and strongly. In addition, the interruptions must be minimized in the process of the chest compressions. It is because too many interruptions will frequently interrupt the blood to flow to the important organs, such as heart, brain and so on. Thus it will reduce the success rate of cardiopulmonary resuscitation. Domestic and international studies have shown that cardiopulmonary resuscitation with extended time may save more lives of patients. But super long CPR is difficult to popularize in the clinical work because there are so many difficulties of manual CPR, for example, the labor intensity is overloaded, the frequency and depth of the compressions are difficult to maintain, and the chest compressions have to be interrupted when the people exchanged. So far, it is still not clear that the efficacy and safety of Heart-Lung Resuscitator which replaces the manual work. Similarly, the effect of the machines on the blood perfusion of important organs, such as brain etc. is still not clear either.Objectives:1 To observe the contrast of the efficacy and safety of the manual CPR and the CPR supported with Heart-Lung Resuscitator;2 To discuss the effectiveness of 120minutes’ super-long CPR supported with Heart-Lung Resuscitator.Material and Methods:The study adopted the prospective and randomized method. A total of 71 patients were selected from December 21, 2012 to December 31, 2014 who all experienced a cardiac arrest caused by acute coronary syndrome in the emergency department of The second Central Hospital of Baoding City. All the patients were randomly divided into two groups. Group A, namely the manual CPR group with a total of 35 patients who were given continuous manual CPR until the patient was resuscitated successfully or the rescue time was over 30 minutes. Group B, namely the Heart-Lung Resuscitator group with a total of 36 patients who were given continuous CPR supported with Heart-Lung Resuscitator until the patient was resuscitated successfully or the rescue time was over 120 minutes. We implemented CPR for all the patients of the two groups according to the requirements of 2010 America Heart Association Guidelines For Cardiopulmonary Resuscitation And Emergency Cardiovascular Care, then we observed and contrasted the complication rate, success rate and the mean blood flow velocity of common carotid artery of the two groups. On the basis of the above work, we discussed the efficacy and safety of the CPR supported with Heart-Lung Resuscitator and effectiveness of super-long CPR. The data was analyzed with SPSS20.0 software for statistical analysis. The measurement data was described as Mean±SD( x ±s), and the comparison between the groups was performed with t test. The enumeration data was described as rate and X2 test was performed. α= 0.05 was the test level, there was statistically significant difference when P<0.05.Results:1 Comparison of gender of the two groupsIn group A, there were 35 patients, including male 29 patients and female 6 patients. In group B, there are 36 patients, including male 28 patients and female 8 patients. P=0.591. There was no statistically significant difference in gender composition between the two groups.2 Comparison of age of the two groupsIn group A, the mean age was 57.80±7.17(years). In group B, the mean age was 56.67±6.98(years). P=0.502. There was no statistically significant difference in age composition between the two groups.3 Comparison of complications of the two groupsIn group A, there were 35 patients, including 10 patients with complications, the complication rate was 28.57%. In group B, there were 36 patients, including 5 patients with complications, the complication rate was 13.89%. P=0.130. There was no statistically significant difference in complication composition between the two groups.4 Comparison of effect of the two groupsIn group A, there were 35 patients, including 6 patients who were rescued successfully, the success rate was 17.14%. In group B, there were 36 patients, including 9 patients who were rescued successfully, the success rate was 25.00%. In group B, there were 7 patients who were rescued within the first 30 minutes, and 2 patients were in 30 minutes to 120 minutes. P=0.417, so there was no statistically significant difference in total success rate of composition between the two groups. P=0.802, so there was no statistically significant difference in success rate of composition between the two groups with 30 minutes.5 Comparison of the average speed of blood flow in the common carotid artery at different time points in two groupsWhen the CPR had been implemented for 10 minutes, 20 minutes and 30 minutes, the mean blood flow velocity of carotid artery in group A were 33.83±8.00cm/s、31.20±9.87cm/s and 30.06±10.09cm/s, the mean blood flow velocity of carotid artery in group B were 35.00±9.12cm/s、31.89±10.92cm/s and 30.83±9.99cm/s. Between the two groups, the comparison of the average speed of blood flow in the common carotid artery at different time points is not statistically different. Conclusions: 1 The efficacy and safety of the Heart-Lung Resuscitator supported CPR is equal to that of the manual CPR.Conclusions: 1 The efficacy and safety of the Heart-Lung Resuscitator supported CPR is equal to that of the manual CPR.2 It may make more patients get benefits to extend the time of the Heart-Lung Resuscitator supported CPR to 120 minutes.