A pneumonia that occurs 48 hours or more after admission to the hospital is considered:
Hospital-acquired pneumonia
Immunocompromised pneumonia
Community-acquired pneumonia
Viral pneumonia
The Correct Answer is A
A. Hospital-acquired pneumonia: Pneumonia that develops 48 hours or more after hospital admission is classified as hospital-acquired pneumonia (HAP). It is caused by pathogens acquired in the hospital setting, often involving multidrug-resistant organisms such as Pseudomonas aeruginosa, Staphylococcus aureus (including MRSA), and Klebsiella pneumoniae. Patients who are intubated, have prolonged hospital stays, or have weakened immune defenses are at higher risk.
B. Immunocompromised pneumonia: Pneumonia in immunocompromised patients occurs due to weakened host defenses, such as in individuals with HIV/AIDS, those undergoing chemotherapy, or transplant recipients on immunosuppressive therapy. While these patients can develop HAP, pneumonia due to opportunistic infections like Pneumocystis jirovecii or fungal infections is categorized separately.
C. Community-acquired pneumonia: Pneumonia acquired outside the hospital or within the first 48 hours of admission is classified as community-acquired pneumonia (CAP). Typical pathogens include Streptococcus pneumoniae, Haemophilus influenzae, and Mycoplasma pneumoniae. CAP is usually less resistant to antibiotics compared to HAP.
D. Viral pneumonia: Pneumonia caused by viral pathogens such as influenza, respiratory syncytial virus (RSV), or SARS-CoV-2 is classified based on the causative agent rather than the setting in which it was acquired. Although viruses can cause both CAP and HAP, the classification of pneumonia is determined by the timing of onset and exposure risks.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Left heart failure: COPD primarily affects the lungs and increases pulmonary vascular resistance, leading to right-sided heart strain rather than left heart failure. Left heart failure is more commonly associated with conditions such as hypertension, myocardial infarction, and valvular diseases, which impair the heart’s ability to pump blood systemically.
B. Restrictive cardiomyopathy: Restrictive cardiomyopathy is a condition where the heart muscle becomes stiff and loses its ability to relax and fill properly, often due to infiltrative diseases such as amyloidosis or sarcoidosis. COPD does not directly lead to restrictive cardiomyopathy, as its primary cardiovascular complication is increased pulmonary resistance causing right heart strain.
C. Hypertrophic cardiomyopathy: Hypertrophic cardiomyopathy is characterized by abnormal thickening of the heart muscle, usually due to genetic mutations. It primarily affects the left ventricle and impairs diastolic filling. COPD does not cause hypertrophic cardiomyopathy, as its cardiovascular effects are due to pulmonary hypertension and right ventricular overload rather than structural abnormalities of the myocardium.
D. Right heart failure: Chronic COPD leads to persistent pulmonary hypertension due to hypoxic vasoconstriction and remodeling of pulmonary vessels. This increased pulmonary vascular resistance forces the right ventricle to work harder to pump blood into the lungs, leading to right ventricular hypertrophy and eventual right heart failure, also known as cor pulmonale. Symptoms include peripheral edema, jugular vein distention, and hepatomegaly due to systemic venous congestion.
Correct Answer is A
Explanation
A. Obstructive: Obstructive pulmonary disease is characterized by increased resistance in the airways, making it more difficult to expire air. Conditions such as asthma and chronic obstructive pulmonary disease (COPD) lead to airflow limitation, requiring greater force to expel air from the lungs.
B. Communicable: Communicable pulmonary diseases refer to infections that can be transmitted from person to person, such as tuberculosis or influenza. This classification does not directly relate to the mechanics of airflow and does not specifically require more force to expire air.
C. Acute: Acute pulmonary disease describes a sudden onset of symptoms, which can be caused by various conditions (e.g., pneumonia or pulmonary embolism). The term "acute" does not inherently indicate a need for increased expiratory force and can encompass both obstructive and restrictive patterns.
D. Restrictive: Restrictive pulmonary disease involves reduced lung volume and compliance, making it difficult to expand the lungs fully during inspiration. While patients may struggle to inhale adequately, they typically do not require increased force to expire air, as expiratory airflow is usually not obstructed in the same manner as in obstructive diseases.
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