48 This figure shows a normal electrocardiogram Missing of w

48. This figure shows a normal electrocardiogram. Missing of waves at point might indicate SA node damage. A. 1 B. 2 C. 3 D. 4 E. 5 49. This figure shows a normal electrocardiogram. Two or more consecutive waves at point \"1\" might suggest A. sinus rhythm. B. nodal rhythm. C. ventricular fibrillation. D. premature ventricular contraction (PVC) E. heart block.

Solution

48. C

49. E

50.E

51. D (mitral, aortic)

52. A (left atrium)

53. C (R wave)

54. B (rises rapidly)

55.C lubb S1 : ventricle contract

56. E

57. D (during atrial systole)