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Objective To compare the physical examination results of nephroptosis in the second stage and the final stage, to find the underlying reasons, and to explore better ways to detect nephroptosis.Methods A total of 1334 subjects participated in both the second stage and final stage of PLA air force medical selection of flying cadets, and physical examination results of both stages were compared.Results All the subjects recruited denied a history of abdominal pain or recurrent urinary tract infection, and urine tests were normal.The positive rate of nephroptosis in the second stage was 10.2%, compared to 5.5% in the final stage.The difference of physical examination results in the two stages was significant, and so was that of disqualification rates.Conclusion Results of physical examination of nephroptosis in the second stage are different from those in the final stage.It′s necessary to find better ways of detection of nephroptosis.
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Objective To determine whether the candidates who are disqualified because of arrhythmia during medical selection of flying cadets in China are qualified or not according to United States Air Force ( USAF ) Medical Standards Directory( MSD) , in order to raise suggestions on revising PLAAF medical selection of flying cadets.Methods ECG was performed on all candidates who participated in the final stage of medical selection of flying cadets, and they were considered qualified or not according to USAF MSD.Results Arrhythmia accounted for the largest proportion of cardiovascular diseases( CVDs) in PLAAF medical selection of flying cadets,the constituent ratios of CVDs from 2012 to 2015 were significant different (P<0.01).There were differences between the two countries and the outcome of 81.48%of the candidates disqualified for premature systole in PLAAF was unknown according to USAF MSD.Conclusion There are some differences in medical selection standards of flying cadets between PLAAF and USAF, and we could revise PLAAF standards with reference to USAF standards.
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Objective To explore the effects of premature atrial contractions on hemodynamics combined with coronary heart disease and hypertension .Methods According to the advance rate ,62 patients with premature atrial contractions were invided into 3 groups : 40% group(n= 24) .All of the patients were performed imped‐ance cardiography .The hemodynamics indexes at different times were compared ,and the variation rates in hemodynamics of the three groups combined with basic diseases were analyzed .Results Stroke volume(SV) ,stroke index(SI) ,aortic compliance(AC) , stroke work(SW) ,stroke work index(SWI) ,and heather index(HI) were smallest when premature atrial contractions ,which were middle when the first sinus beats before premature atrial contractions ,and largest when the first sinus beats after premature atrial contractions(P 40% group(P 40% group(P< 0 .05) .Conclusion The advance rate is relatively large in patients with basic cardiovascular disease .Premature atrial contractions has certain effects on hemodynamics ,and the effects are positively correlated with advance rate .
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Objective To investigate the effect of positive acceleration (+Gz) on monophasic action potential duration of 90%repolarization( MAPD90 ) and transmural dispersion of repolarization ( TDR) in ventricles of rabbits and to explore the cellular electrophysiologic mechanism of tachyarrhythmia induced by positive acceleration .Methods Twenty-four healthy, male New Zealand white rabbits were randomly and equally divided into control group and +Gz group.The +Gz group rabbits were given +8 Gz exposure, 1 min a time, 3 times a day,and a total of 7 days.The two groups were subjec-ted to Holter monitoring at the same time to observe the incidence of tachyarrhythmia .Using the monophasic action potential ( MAP) recording technology , the MAP of the left ventricle was recorded while MAPD 90 and TDR were measured .By using Burst stimulation method , the right ventricular anterior wall of the rabbits was stimulated , and the incidence of tachya-rrhythmia was observed .Results The Holter record showed that the incidence of tachyarrhythmias in +Gz group was 55%(6/11), but the control group did not have any case of tachyarrhythmias .Compared with the control group ,MAPD90 of en-docardial and epicardial cells was significantly decreased in the +Gz group, while MAPD90 of middle myocardial cells did not change significantly ,but TDR was increased obviously .Four rabbits in +Gz group suffered from tachyarrhythmias dur-ing Burst stimulation ,and the incidence of tachyarrhythmias was 40% ( 4/10 ) .Conclusion +Gz exposure can increase the incidence of tachyarrhythmias .The shortened MAPD90 of ventricular muscle cells and the increased TDR may be the cell electrophysiological mechanisms of tachyarrhythmias induced by +Gz.
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Objective To probe into the usage of statins in the patients with coronary artery disease in elderly patients. Methods From Jun 1,2009 to Mar 31,2009 in our hospital, 323 elderly outpatients with coronary artery disease were included in the investigation. The data were statistically analyzed. Results 62.2% of the patients used statins. The statins usage rates (44. 8% ,61.3% ,71.3% ) among three age groups(60 -69 years old,70- 79 years old, and ＞ 80 years old)were significantly different. The rates of statins usage were significantly different between male and female groups. Conclusion The usage of statins as secondary prevention of coronary artery disease varies and there is urgent need to standardize the usage of statins according to the treatment guideline.
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Delicacy management is an important issue to the hospital logistics mode innovation,which is the only way to realize a scientific hospital logistics management.This article proposes the practical ways to push on the hospital logistics delicacy management from many respects,such as working regulation,consumption measurement,contract supervision,cost accounting,structure control and convergence supporting.