Significance of ventricular arrhythmias in systemic hypertension with left ventricular hypertrophy
| Autor: | Peter W. Macfarlane, Stuart D. Pringle, James H. McKillop, A.Ross Lorimer, Stuart M. Cobbe, Francis G. Dunn |
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| Rok vydání: | 1992 |
| Předmět: |
Adult
Male Tachycardia medicine.medical_specialty Heart disease Cardiomegaly Left ventricular hypertrophy Ventricular tachycardia Sudden death Muscle hypertrophy Internal medicine Prevalence medicine Humans cardiovascular diseases Risk factor Aged medicine.diagnostic_test business.industry Signal Processing Computer-Assisted Middle Aged medicine.disease Electrophysiology Hypertension Electrocardiography Ambulatory cardiovascular system Cardiology Female medicine.symptom Cardiology and Cardiovascular Medicine business Electrocardiography |
| Zdroj: | The American Journal of Cardiology. 69:913-917 |
| ISSN: | 0002-9149 |
| DOI: | 10.1016/0002-9149(92)90792-w |
| Popis: | Hypertensive patients with the electrocardiographic (ECG) pattern of left ventricular (LV) hypertrophy and strain are at increased risk of sudden death. It has been suggested that ventricular arrhythmias may be responsible. The prevalence and significance of ventricular arrhythmias was therefore studied in 90 hypertensive patients with LV hypertrophy and strain by undertaking 48-hour ambulatory ECG monitoring, ECG signal-averaging and programmed ventricular stimulation. Complex ventricular ectopic activity (Lown grade greater than or equal to 3) was detected in 59 patients (66%). Eleven patients (12%) had episodes of nonsustained ventricular tachycardia. There were no sustained arrhythmias either on ambulatory ECG monitoring or induced by programmed ventricular stimulation. Only 1 patient had ventricular late potentials recorded by the signal-averaged electrocardiogram. Therefore, there was little to suggest an underlying arrhythmogenic substrate in these patients. In conclusion, whereas ventricular arrhythmias occur often in patients with LV hypertrophy associated with systemic hypertension, their significance, if any, remains to be established. |
| Databáze: | OpenAIRE |
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