Which of the following procedures reduces the potential for infection primarily by addressing the portal of entry?
A. Wearing gloves when contact with blood or body fluids is anticipated
B. Wiping down common areas with buffered bleach on a regular basis
C. Isolating patients who have antibiotic-resistant infections
D. Disposing of soiled clothing and bed linens in a dedicated receptacle
0 out of 1 points
A 70-year-old woman with ongoing severe atrial fibrillation is scheduled for defibrillation. What is an aspect of the rationale and physiology of defibrillation treatment?
A. Defibrillation can be achieved using either a transcutaneous or transvenous pacemaker.
B. Interruption of disorganized impulses by the current allows the AV node to readopt its normal pacemaker role.
C. Defibrillation must be coincided with the R wave of the ECG in order to be successful.
D. The goal is to depolarize the entire heart during the passage of current.
In the ICU, the nurse hears an emergency cardiac monitor go off. The nurse looks at the telemetry and notices the patient has gone into ventricular tachycardia.The nurse will likely assess for signs/symptoms of
A. increasing cardiac index by correlating the volume of blood pumped by the heart with an individual’s body surface area.
B. decreasing cardiac output due to less ventricular filling time.
C. development of hypertension with BP 190/98.
D. oxygen deprivation with O2 saturation decreasing to approximately 90%.
An agricultural worker is picking fruit on a day when the air temperature is 106°F. Which of the following processes will most likely be occurring while he works?
A. Conduction of heat from the air will be heating his skin surface and raising his core temperature.
B. His autonomic nervous system will be stimulating him to sweat.
C. Blood volume at his skin surface will be increasing to dissipate heat.
D. Radiation from his skin surfaces will be dissipating heat into the environment.
A 22-year-old female college student is shocked to receive a diagnosis of myasthenia gravis. What are the etiology and most likely treatment for her health problem?
A. A decline in functioning acetylcholine receptors; treatment with corticosteroids and intravenous immunoglobulins
B. Cerebellar lesions; surgical and immunosuppressive treatment
C. Excess acetylcholinesterase production; treatment with thymectomy
D. Autoimmune destruction of skeletal muscle cells; treatment with intensive physical therapy and anabolic steroids
A student asks the instructor about the origins of different tissues and their cellular origins during the process of development. Which of the instructor’s following statements best describes the process of cell differentiation?
A. “A fertilized ovum undergoes a series of divisions, yielding many different cell types.”
B. “A single stem cell differentiates into approximately 200 different types of cells.”
C. “Cells differentiate into necessary body cells peaking after conception and ceasing near the time of birth.”
D. “Cells of the hematopoietic system produce the appropriate body cells that are required at each stage of development.”
A physician is providing care for several patients on a medical unit of a hospital. In which of the following patient situations would the physician most likelyrule out hypertension as a contributing factor?
A. A 66-year-old woman with poorly controlled angina and consequent limited activity tolerance
B. A 61-year-old man who has a heart valve infection and recurrent fever
C. An 81-year-old woman who has had an ischemic stroke and has consequent one-sided weakness
D. A 44-year-old man awaiting a kidney transplant who requires hemodialysis three times per week
A geriatric clinical nurse educator is teaching the other members of the health care team about the incidence, prevalence, and course of depression among older adults. Which of the following statements is most likely to appear in the physician’s teaching?
A. “Bronchodilators and antiplatelet medications have been correlated with depression in the elderly.”
B. “Many older adults lack the symptoms of sleep disturbances and lack of concentration that suggest depression in younger adults.”
C. “Even though suicide rates are lower among older adults than younger adults, depression needs to be diagnosed and treated early.”
D. “Though they are certainly not synonymous, depression can be an indicator of dementia.”