1- 50 Surgery

1. Which of the following is the BEST indication of adequacy of perfusion by a heart valve machine? A. Venous oxygen saturation B. Arterial oxygen saturation C. Arterial Pco2 D. Urine output 2. What is the normal pressure in the left atrium? A. 0-5 mmHg B. 6-10 mmHg C. 11-15 mmHg D. 16-20 mmHg 3. Which of the following will BEST evaluate left atrial dilatation with mitral stenosis? A. Left lateral oblique view on CXR B. Echocardiography C. Posteroanterior view on CXR D. Electrocardiogram 4. Which of the following will NOT produce a forceful & bounding pulse? A. Patent ductus arteriosus B. Hyperthyroidism C. Aortic stenosis D. Aortic insufficiency 5. The pulse is small in all of the following, EXCEPT: A. Mitral stenosis B. Myocardial dilatation C. Pericardial effusion D. Syphilis 6. Which of the following is the MOST common complication of patent ductus arteriosus? A. Heart failure B. Pulmonary hypertension C. Pulmonary incompetence D. Bacterial endocarditis 7. Which of the following is a characteristic feature of patent ductus arteriosus? A. Continuous murmur at the 2nd left intercostal space B. Pansystolic murmur along the left sternal border C. Prominent pulmonary conus on CXR D. Streptococcus viridans endocarditis 8. What is the MAIN indication for surgery in pulmonary stenosis? A. Valve gradient >50 mmHg B. Right ventricular pressure >75 mmHg C. Right ventricular hypertrophy on ECG D. Valve diameter