RESUMO
Objective To assess the influence of the wall motion state and the infarct size of myocardial on left atrial(LA) function in patients with myocardial infarction(MI), and to investigate the main determinants of LA function. Methods LA function of the small area of MI group (group A), the large area of MI group (group B) and control.group were compared,and the influence of the infarct size on LA function was evaluated. The correlation between parameters of LA function and wall motion score index (WMSI) was analyzed. Stepwise regression was made to determine the influencing factors of LA function. index (VpreⅠ),LA active emptying volume index (AEVI), LA ejection force index (EFI) of group A and group B were larger than those of control group,and the parameters of group B were also larger than those of group A(P<0.05). LA passive emptying fraction (PEF) and atrial expansion index (AEI) of group A and group B were smaller than those of control group,and the parameters of group B were also smaller than regression equation. Conclusions With the increasing of areas of infarction and the aggravating of wall motion sate,the LA remodeling aggravated. The boost pump function of LA augmented, and the function of conduit and reservoir of LA was reduced. Wall motion state, LV remodeling and LV diastolic function were the major determinants of augmented LA function in MI patients.
RESUMO
Objective To discuss the effective methods to improve the teaching effect of Basis of Nursing and cultivation of high-quality persons. Methods We randomly divided 87 nursing students into the test group(42 eases) ,which adopt the combination of grouped scene teaching with role-playing teaching and the control group (45 cases),which received routine teaching methods.The effect of the two teaching methods was evaluated by questionnaires. Results The total score and the score of each section of the questionnaires in the test group were higher than those of the control group(P ＜ 0.05 ). Conclusions The combination of scene teaching with role-playing teaching could inspire students' interest,strengthen the role consciousness and improve their comprehensive quality.