Tuesday, March 11, 2008
Paroxysmal ventricular tachycardia
Overview found in the majority of organic heart disease, especially coronary artery disease, acute myocardial infarction and myocardial disease, found in a small number of non-organic heart disease and drug intoxication, hypokalemia, due to ventricular tachycardia can lead to serious clinical consequences. out-patient should be treated with caution, the general receivable hospital treatment. Medical short wheel sustained ventricular tachycardia or ventricular tachycardia is not associated with hemodynamic disorders generally more stable vital signs. fast heart rate of cardiac auscultation and generally rules can hear intermittent seizures and extra. A basis for heart or heart rate "200 times / hours will be accompanied by lowering blood pressure, difficulty in breathing, sweating, cold extremities, and other obstacles to the hemodynamic performance of patients, shows the critical need to be addressed urgently. Clinical manifestations VT more sudden onset, the patient is obviously afraid of chest tightness may on the basis of premature ventricular contractions, When the heart rate "200 times / hours or obvious organic heart disease may have angina, acute heart failure, there Aspen syndrome, or even sudden death. Previous history of heart disease and ventricular tachycardia history helps diagnosis. Attack understanding of the time and frequency that in the near term, the history of drug use, particularly of anti-arrhythmic drugs, tonic, Diuretics of history can sometimes help find ventricular tachycardia caused the incident. Auxiliary ECG diagnosis can be recorded three times in a row over the rapid abnormal QRS leniency, has nothing to do with the P wave, can sometimes be seen ventricular and ventricular fusion wave. Attack attack is not frequent or short-term 24-hour Holter helpful diagnosis. Echocardiography clear basis for heart disease. Treatment (1) the acute treatment; Ventricular tachycardia can lead to hemodynamic disorders, must be promptly corrected. the majority should be hospitalized. Drug treatment of first choice lidocaine ,50 - 100mg diluted slow static push void can be reused, Onset after 1 - 4 mg / sub-infusion to maintain, may also choose propafenone 75 mg or 150 mg of amiodarone diluted slow static push and maintain intravenous drip. Obviously there are obstacles hemodynamics preferred synchronous DC cardioversion, cardioversion energy to 300 joules better. Meanwhile, active treatment should be based on heart and potassium supplement. (2) attack prevention; Preventive attack may intravenous drip lidocaine, Oral slow rhythm 450 mg-800 mg / d, or propafenone 450-800 mg / d, Amiodarone 200-600 mg / d. Effective treatment of the primary disease and chronic added potassium right ventricular tachycardia attack prevention help. Diagnosis with Wolff - Parkinson-White syndrome Road adjacent to or associated with the former Chuan bundle branch block room rate differential phase.
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