Search Results

1.Risk Factors Affecting the Mortality of Acute Myocardial Infarction during the First 24 Hour after Onset.

Jun JHO ; Chan Sang PARK ; Dong Phil LEE

Journal of the Korean Society of Emergency Medicine 1999;10(4):607-614

BACKGROUND: Recently, the incidence of acute myocardial infaction has been gradually increasing as prolongation of life spans and improvements of diet and life styles in Korea. The rate of mortality and sudden death is higher than other diseases. The purpose of this study is to evaluate factors which can affect on the mortality of AMI during initial 24 hrs. METHODS: A retrospective clinical study was done on 364 consecutive patients with AMI who had been presented to Keimyung University Dong-sang Medical Center from January 1990 to May 1997(M:F ratio=254:110). The subjects were divided two groups. The Group I was patients who had expired during the initial 24hrs period of AMI(47 patients, 13%), the Group II was patients who had survived(317 patients, 87%). We compared clinical features, EKG, laboratory results in both groups and tried to analyse the vulnarable factors. RESULTS: The results were as follows; 1) The mean age in Group I (64.4 yearly) was older than in Group II(61.3 yearly) and female gender was also higher in Group I. The mean systolic/diastolic blood pressures of the Group I(103/61mmHg) were lower than those of the Group II(123/75mmHg). 2) The chest pain and mental change were noted more frequently in Group I than in Group II and the dyspnea was less frequent in Group I than Group II. 3) The higher grades of Killip classification was significantly more frequent in Group I than in Group II. 4) The mean onset to drug time for thrombolytics in Group I and Group II were 14.1 hrs and 6.6 hrs. 5) The mortality rate of the Group I and the Group II were respectively 13%, 6.6%. The most common causes of death were cardiogenic shock and ventricular arrhythmia. CONCLUSION: The mortality rate of initial 24 hrs of onset as form of sudden death was higher than post-24hrs group(66.2%). The factors for the higher mortality group were old age and female gender, and they were unstable in vital signs, higher Killip classifications. Therefore, these groups demand more rapid and aggressive approach than the other groups.
Arrhythmias, Cardiac ; Cause of Death ; Chest Pain ; Classification ; Death, Sudden ; Diet ; Dyspnea ; Electrocardiography ; Female ; Humans ; Incidence ; Korea ; Life Style ; Life Support Care ; Mortality* ; Myocardial Infarction* ; Retrospective Studies ; Risk Factors* ; Shock, Cardiogenic ; Vital Signs

5.Scintimetric Evaluation of Femoral Neck Fractures by Tc-99m-MDP: Experimental Study in the Mature Rabbits

Sung Jun HWANG ; Sang Won PARK ; Hong Kun LEE

The Journal of the Korean Orthopaedic Association 1987;22(5):1082-1089

In femorsl neck fracture, viability of the femoral head depends on the revascularization of the femoral head. The purpose of this study is to observe the effect of early fixation and anatomical reduction by measuring the Tc-99m-MDP uptake ratio of the femoral head in experimental animsls. Femoral neck region of 20 mature rabbits were osteotomized completely and divided into 2 groups ; each group consisted of 10 rsbbits. Group 1 had two Kirschner wire fixation after osteotomy and anatomic reduction. Group 2 had no fixation after osteotomy. The uptake ratio of Tc-99m-MDP of the femoral head in each group were measured st the intervals of 24 hours, 48 hours, 1 week, 2 weeks, 3 weeks, and 4 weeks, respectively. The results obtained were as follows ; 1. In experimental group 1, the mean uptake ratio of the femoral head was 0.72±0.13 at 1 day after operation, increased to a level of 1.44±0.14 at 1 week, increased to a maximal value of 2. 90±0.36 at 3 weeks and decreased to a level of 1.10+0.12 at 4 weeks. 2. In experimental group 2, the mean uptake ratio of the femoral head was 0.70±0.10 at 1 day, 0.64±0.13 at 1 week, decreased to a maximal value of 0.33±0.05 at 3 weeks and 0.47±0.05 at 4 weeks, showing decreased level below 1.0. The results suggest that early anatomicsl reduction and rigid fixation of femoral neck fracture is helpful for revascularization of the femoral head and prevention of non union.
Femoral Neck Fractures ; Femur Neck ; Head ; Neck ; Osteotomy ; Rabbits