Nokea
A patient newly admitted to the telemetry unit is experiencing progressive fatigue, hemoptysis, and dyspnea. Diagnostic testing has revealed that these signs and symptoms are attributable to pulmonary venous hypertension. What valvular disorder should the nurse anticipate being diagnosed in this patient?
- A. Aortic regurgitation
- B. Mitral stenosis
- C. Mitral valve prolapse
- D. Aortic stenosis
Correct Answer: B
Rationale: The first symptom of mitral stenosis is often dyspnea on exertion as a result of pulmonary venous hypertension. Symptoms usually develop after the valve opening is reduced by one-third to one-half its usual size. Patients are likely to show progressive fatigue as a result of low cardiac output. The enlarged left atrium may create pressure on the left bronchial tree, resulting in a dry cough or wheezing. Patients may expectorate blood (i.e., hemoptysis) or experience palpitations, orthopnea, paroxysmal nocturnal dyspnea (PND), and repeated respiratory infections. Pulmonary venous hypertension is not typically caused by aortic regurgitation, mitral valve prolapse, or aortic stenosis.
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The nurse is creating a plan of care for a patient with a cardiomyopathy. What priority goal should underlie most of the assessments and interventions that are selected for this patient?
- A. Absence of complications
- B. Adherence to the self-care program
- C. Improved cardiac output
- D. Increased activity tolerance
Correct Answer: C
Rationale: The priority nursing diagnosis of a patient with cardiomyopathy would include improved or maintained cardiac output. Regardless of the category and cause, cardiomyopathy may lead to severe heart failure, lethal dysrhythmias, and death. The pathophysiology of all cardiomyopathies is a series of progressive events that culminate in impaired cardiac output. Absence of complications, adherence to the self-care program, and increased activity tolerance should be included in the care plan, but they do not have the priority of improved cardiac output.
The nurse is reviewing the echocardiography results of a patient who has just been diagnosed with dilated cardiomyopathy (DCM). What changes in heart structure characterize DCM?
- A. Dilated ventricles with atrophy of the ventricles
- B. Dilated ventricles without hypertrophy of the ventricles
- C. Dilation and hypertrophy of all four heart chambers
- D. Dilation of the atria and hypertrophy of the ventricles
Correct Answer: B
Rationale: DCM is characterized by significant dilation of the ventricles without significant concomitant hypertrophy and systolic dysfunction. The ventricles do not atrophy in patients with DCM.
A patient has been diagnosed with a valvular disorder. The patient tells the nurse that he has read about numerous treatment options, including valvuloplasty. What should the nurse teach the patient about valvuloplasty?
- A. For some patients, valvuloplasty can be done in a cardiac catheterization laboratory.
- B. Valvuloplasty is a dangerous procedure, but it has excellent potential if it goes well.
- C. Valvuloplasty is open heart surgery, but this is very safe these days and normally requires only an overnight hospital stay.
- D. Its prudent to get a second opinion before deciding to have valvuloplasty.
Correct Answer: A
Rationale: Some valvuloplasty procedures do not require general anesthesia or cardiopulmonary bypass and can be performed in a cardiac catheterization laboratory or hybrid room. Open heart surgery is not required and the procedure does not carry exceptional risks that would designate it as being dangerous. Normally there is no need for the nurse to advocate for a second opinion.
The nurse on the hospitals infection control committee is looking into two cases of hospital-acquired infective endocarditis among a specific classification of patients. What classification of patients would be at greatest risk for hospital-acquired endocarditis?
- A. Hemodialysis patients
- B. Patients on immunoglobulins
- C. Patients who undergo intermittent urinary catheterization
- D. Children under the age of 12
Correct Answer: A
Rationale: Hospital-acquired infective endocarditis occurs most often in patients with debilitating disease or indwelling catheters and in patients who are receiving hemodialysis or prolonged IV fluid or antibiotic therapy. Patients taking immunosuppressive medications or corticosteroids are more susceptible to fungal endocarditis. Patients on immunoglobulins, those who need in and out catheterization, and children are not at increased risk for nosocomial infective endocarditis.
The nurse is caring for a patient who is scheduled to undergo mechanical valve replacement. Patient education should include which of the following?
- A. Use of patient-controlled analgesia
- B. Long-term anticoagulant therapy
- C. Steroid therapy
- D. Use of IV diuretics
Correct Answer: B
Rationale: Mechanical valves necessitate long-term use of required anticoagulants. Diuretics and steroids are not indicated and patient-controlled analgesia may or may be not be used in the immediate postoperative period.