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Protective effect of left ventricular hypertrophy in right coronary artery occlusions
| Content Provider | Scilit |
|---|---|
| Author | de Freitas Gomes, Marne Gottschall, Carlos Antônio Mascia |
| Copyright Year | 1999 |
| Description | OBJECTIVE: To test the hypothesis that left ventricular hypertrophy (LVH) reduces the electrocardiographic and functional effects of right coronary artery occlusion. METHODS: We analysed 215 patients (166 males and 49 women,age of 58.9±10.6 years), with occlusion of the right coronary artery without other associated lesions. There was no significant difference (p>0.05) in age and gender distribution between the 78 patients with LVH (left ventricular mass >100g/m²) (Group A) when compared with the 137 patients without LVH (left ventricular mass <100g/m²) (Group B). RESULTS: The electrocardiographic finding of transmural necrosis was more often found in group B patients than in group A patients (56.9% and 30.8%, respectively; p<0.05). The left ventricular function parameters of group A were better than those of group B: the ratio end-diastolic pressure/systolic pressure (EDP/SP) (A: 0.108±0.036; B: 0.121±0.050; p<0.05); the end-diastolic volume index (A: 75.9±31.3ml/m²; B: 88.0±31.0ml/m²; p<0.01); the end-systolic volume index (A: 16.0±10.0ml/m²; B: 27.0 ±20.0ml/m²; p<0.001); the ejection fraction (A 78.6±10.8%; B 67.7±17.9%; p<0.001); the anteroinferior shortening (A: 43.9±10.3%; B: 35.1±12.8%; p<0.001). A higher degree of coronary tortuosity was observed in group A than in group B (78.2% and 24.1%; p<0.001) and also a more frequent absent or minimal diaphragmatic hypokinetic area (A: 80.8%; B: 54.0%; p<0.05). CONCLUSION: LVH reduces the effects of myocardial sequela and protects LV function when right coronary occlusion develops |
| Related Links | http://www.scielo.br/pdf/abc/v72n2/a04v72n2.pdf http://www.scielo.br/scielo.php?script=sci_pdf&pid=S0066-782X1999000200004&lng=en&nrm=iso&tlng=en |
| Ending Page | 170 |
| Page Count | 10 |
| Starting Page | 161 |
| ISSN | 0066782X |
| e-ISSN | 16784170 |
| DOI | 10.1590/s0066-782x1999000200004 |
| Journal | Arquivos Brasileiros de Cardiologia |
| Issue Number | 2 |
| Volume Number | 72 |
| Language | English |
| Publisher | FapUNIFESP (SciELO) |
| Publisher Date | 1999-02-01 |
| Access Restriction | Open |
| Subject Keyword | Arquivos Brasileiros de Cardiologia |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cardiology and Cardiovascular Medicine |
