The pacemaker that fires at 20 to 40 beats per minute is:
A. Purkinje's network.
B. the bundle of His.
C. the AV node.
D. the SA node.
Answer: A
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Ravi is a 67-year-old man who recently moved to the United States from India. He is a retired engineer. He is also a vegetarian and adheres to a strict macrobiotic vegetarian diet. He was seen because of complaints of diffuse skeletal pain and tenderness, particularly in the hip region, and lower back. Physical exam showed he has some muscle weakness and has somewhat of a waddling gait. STAT labs
showed an elevated BUN and creatinine, low normal calcium, and a serum inorganic phosphate level that was 5.7. X-rays showed pseudofractures of the left femur. The physician diagnosed Ravi with senile osteomalacia. He prescribed calcium carbonate, and vitamin D. The patient will undergo a bone biopsy next week to evaluate the presence of renal osteodystrophy. First-listed diagnosis: ________ Fill in the blank with correct word.
What is the unique focus of health care providers that challenges them to make sound ethical decisions?
A. the administration of medications B. the performance of medical procedures C. the offering of health care to all D. the allocation of scarce resources E. the health and well-being of the patient
The Pulmonary Artery carries oxygenated blood from the lungs to the hear
a. true b. false
Most AECs utilize ____ ion chambers in various combinations.
a. one b. two c. three d. four