A patient is admitted to the critical care unit with a diagnosis of acute myocardial infarction. The monitor pattern reveals bradycardia. The patient weight is 70 kg and height is 5 feet, 5 inches tall
Based on the above information; occlusion of which coronary artery most likely resulted in bradycardia from sinoatrial node ischemia? a. Right c. Circumflex
b. Left anterior descending d. Dominant
A
The right coronary artery provides the blood supply to the sinoatrial and AV nodes in more than half the population. The left coronary artery is a short but important artery that divides into two large arteries, the left anterior descending and the circumflex arteries. These vessels serve the left atrium and most of the left ventricle. The term dominant coronary artery is used to describe the artery that supplies the posterior part of the heart.
You might also like to view...
The NCLEX-RN exam is a computerized adaptive test (CAT) that tests for minimal competency. To be successful on the exam, what must occur?
a. The tester must pass the questions at a rate of 60% to 65%. b. The tester's computer must close-out at 75 questions. c. The tester's computer will take 265 questions for success. d. The tester must answer higher-level questions correctly to move to the next ques-tion.
A nurse is using inspection as an assessment technique. What does the nurse use during inspection?
A) Equipment such as a stethoscope B) Both hands to produce sounds C) Light palpation to detect surfaces D) Senses of vision, hearing, smell
Which of the following would be an appropriate response by a public health department if there is some evidence of a relationship between a substance and human health but research has not yet drawn conclusions?
a. Be cautious. b. Do not worry about it. c. Contact the Centers for Disease Control and Prevention. d. Refuse to be involved.
A cell was isolated from the CNS. A researcher revealed that its main function was to clear cel-lular debris. What type of cell is the researcher studying?
a. Astrocyte b. Ependymal cell c. Microglia d. Schwann cell