The heartbeat normally originates in which part of the heart?
a. Purkinje fibers c. SA node
b. AV node d. bundle of His
C
A small mass of cells in the right atrium, or the sinoatrial node (SA node), normally controls the heart rate by rhythmically generating electrical impulses. Once the heartbeat is generated, the impulse travels through the AV node, along the bundle of His, and to the Purkinje fibers.
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The nursing instructor is educating a group of nursing students on sports-related injuries. Which comment made by a student nurse would indicate to the nursing instructor the need for further instruction?
A) "Clients who participate in sports, strenuous exercise, or athletics of any kind should be educated about the dangers of unreported head injuries." B) "Adolescents are at the greatest risk for not reporting sports-related injuries." C) "Young adults are at the greatest risk for not reporting sports-related injuries." D) "Clients who have been injured playing a sport need to be counseled on the risks of unreported concussions."
Which laboratory finding indicates to the nurse that a patient has an impaired fasting glucose (IFG)?
A) Increased insulin and decreased glucagon levels two hours after fasting B) An blood glucose level 2 hours after an oral glucose tolerance test that is high but not diagnostic of diabetes C) A fasting blood glucose level is diagnostic for diabetes D) A fasting blood glucose level or A1c higher than normal but not diagnostic for diabetes
As a beginning student in nursing, what is essential to the mastery of technical skills, such as giving an injection?
A) Read the steps of the procedure before clinical assignments. B) Even if you do not know how to give an injection, act as if you do. C) Practice giving injections in the learning laboratory until you feel comfortable. D) Tell your instructor that you don't think you can ever give a shot.
Samuel, who has been diagnosed with lupus erythematosus, is prescribed a cytotoxic drug. His doctor explains that the drug is converted in the body to mercaptopurine, which exerts a cytotoxic effect. It inhibits the synthesis of purine nucleotides that are required for DNA synthesis. Which of the following drugs has Samuel been prescribed?
A. Cyclophosphamide B. Azathioprine C. Alefacept D. Tacrolimus