Exam 3 Practice Qs Flashcards
(14 cards)
Blood flows from the pulmonary veins into the _______
left atrium
A nurse is looking at an ECG and is measuring the time interval from the onset of atrial electrical activity to the onset of ventricular electrical activity. What is the nurse measuring?
PR interval
A person’s heart rate is reduced. What is happening physiologically?
Stimulation of the parasympathetic nervous system
Which finding will cause the resistance in blood vessels to be increased?
Increased blood viscosity
A nurse observes a “hot spot” from the injection of a radioactive solution. Which test is the nurse reviewing?
Technetium scanning
An individual has primary hypertension and recurrent strokes. Which drug should the nurse prepare to administer?
ACE inhibitors
A person has atherosclerosis. Which pathophysiologic process has occurred?
Macrophages release enzymes and toxic oxygen radicals that create oxidative stress
A person with an MI is releasing angiotensin II. How should the nurse interpret this finding?
Releasing angiotensin II is _________
Counterproductive; it causes the heart to work harder
A person has a diagnosis of valvular regurgitation. What pathophysiologic process is the person experiencing?
The valves ________
fail to close completely, permitting the backflow of blood to continue
Systolic heart failure is associated with the activation of the ________
Renin-angiotensin-aldosterone system (RAAS)
A nurse recalls that the acinus contains ___________
Alveolar ducts
J-receptors are __________
Sensitive to alterations in pulmonary capillary pressure
Which statement indicates the nurse has a correct understanding of surfactant?
Surfactant ___________
Reduces surface tension
Which conditions cause a shift to the left in the oxyhemoglobin dissociation curve?
High pH and hypocapnia
