Cardiology Facts 15


  • Echo is preferred over MRI in serial evaluation of left ventricular function in woman with breast cancer receiving doxorubicin 
  • Older patient with intermittent near syncope and resting bradycardia - sinus node dysfunction. The best test to determine whether symptoms are due to bradycardia or sinus pauses is an event monitor
  • Patients with impaired left ventricular function may have severe aortic stenosis, as determined by the continuity equation, despite a peak outow velocity of only 2 to 3m/second
  • Factors that favour a cardiac cause for syncope include age >60 years, male sex, and known ischemic heart disease, ECG poor R wave progression. Arrhythmic causes of syncope are more common with LV dysfunction. Evaluation of left ventricular (LV) structure and function is the most appropriate next step. Tests: ambulatory ECG monitoring, Echocardiogram
  • Dull pain, swelling, erythema, low-grade fever, purulent drainage after pulse generator replacement show pacemaker-system infection - treatment admit, IV antibiotics and pacemaker-system extraction
  • In coarctation of the aorta, femoral pulse demonstrates later peak than brachial pulse
  • LVEF reduced, aortic valve area and gradient reduced, dobutamine echocardiography gradients increase, valve area remains same - AVR
  • In cardiac tamponade, right ventricular diastolic collapse occurs less frequently if pulmonary hypertension is present
  • Retrosternal chest discomfort, burning, relieved by nitroglycerin and food - esophageal reflux and spasm
  • In Brugada ECG pattern, sudden death of brother does not increase risk for sudden death, continue clinical follow-up