ABSTRACT
Objective:To construct a multi-stage dynamic prevention and control model, establish a system of intervention points and prevention and control measures for the prevention and control of workplace violence in hospitals, so as to provide guidance for hospitals and medical staffs to effectively prevent and respond to such incidents.Methods:Based on the crisis management theory, a model for the prevention and control of workplace violence in hospitals was constructed, the intervention points and prevention and control measures were screened by the Delphi method.Results:A multi-stage dynamic prevention and control model of workplace violence in hospitals was constructed, and a system of intervention points and prevention and control measures for workplace violence in hospitals were established according to the model. The system was divided into three stages: the pre-event stage contained 10 intervention points and 48 countermeasures, the in-event stage contained 6 intervention points and 17 countermeasures, and the post-event stage contained 3 intervention points and 12 countermeasures.Conclusions:It is an effective way to avoid violence and reduce the damage degree of violent incidents by selecting different countermeasures for different intervention points and carrying out multi-stage dynamic prevention and control of workplace violence in hospitals.
ABSTRACT
BACKGROUND:Brain natriuretic peptide, an important serum marker for diagnosis of cardiovascular diseases, is crucial for risk factor analysis of cardiovascular diseases. OBJECTIVE: To analyze the relationship between brain natriuretic peptide and hemodynamic parameters before and after coronary artery bypass grafting. METHODS:Thirty patients with coronary heart disease undergoing coronary artery bypass grafting were selected, including 13 patients with left ventricular ejection fraction≥ 50% (normal heart function) and 17 patients with left ventricular ejection fraction RESULTS AND CONCLUSION: Preoperative and postoperative levels of plasma brain natriuretic peptides were significantly lower in the patients with left ventricular ejection fraction≥ 50% than those with left ventricular ejection fraction < 50%; while in each group, the level of brain natriuretic peptides was remarkably increased after coronary artery bypass grafting (P < 0.05 orP< 0.001). Preoperative brain natriuretic peptide levels were positively correlated with New York Heart Association classification grading, left atrial diameter and left ventricular diameter (r=0.61;r=0.34;r=0.67), but negatively correlated with echocardiographic left ventricular ejection fraction and cardiac output (r=-0.75;r=-0.70). The postoperative peak level of brain natriuretic peptides was positively correlated with New York Heart Association classification grading, echocardiographic left ventricular end diastolic diameter and pulmonary artery pressure (r=0.72;r=0.70;r=0.45). These findings indicate that the plasma level of brain natriuretic peptides before coronary artery bypass grafting shows a good correlation with left ventricular ejection fraction and left ventricular end diastolic diameter, which accurately reflect the state of cardiac function before coronary artery bypass grafting.