Bradford T. Winslow, MD, FAAFP, Swedish Family Medicine Residency, University of Colorado at Aurora School of Medicine
TIPS ABOUT DIAGNOSIS AND MANAGEMENT OF PNEUMONIA IN NURSING HOME PATIENTS
Pneumonia is a common infection among nursing home residents. It is also a serious infection, with 30-day mortality rates estimated at between 10 and 30 percent.
Pneumonia in nursing home patients is often categorized as a form of healthcare-acquired pneumonia (HCAP), though some guidelines no longer recognize HCAP as a distinct entity. While usually bacterial in origin, the infecting microorganism in pneumonia in nursing home patients is not often identified in routine clinical practice.
Streptococcus pneumoniae is probably the most common cause. In more severe cases, such as those that require hospitalization, enteric gram-negative organisms and S. aureus may be more frequent pathogens than S. pneumoniae. Gram negatives and S. aureus can be associated with antimicrobial resistance, especially if a patient received antibiotics within the preceding 90 days, if there is a high incidence of antibiotic resistance in the community or facility, or if the patient is on dialysis or is immunosuppressed.
The symptoms of pneumonia in nursing home patients are often subtle, but most patients have at least one respiratory finding, such as cough, increased respiratory rate (≥30 breaths per minute), or the presence of crackles on auscultation. Decreased functional status is common.
Diagnosis is based on a new or progressive infiltrate on chest radiography plus clinical findings consistent with pneumonia. These include new-onset fever >100.4°F (>38°C), leukocytosis, purulent sputum, or hypoxemia (Table 1). Sputum Gram stain and culture should be considered if the patient is able to generate a useful sample and also for hospitalized and/or severely ill patients. Blood cultures, urinary antigen testing for common pathogens, and serum procalcitonin levels may be useful for sicker patients.
|Table 1. Guideline Recommendations for Diagnosis of Nursing Home-Acquired Pneumonia
Treatment of pneumonia in nursing home patients is tailored to the likely cause of the infection and whether treatment will be provided in the nursing home or in a hospital.
In the Nursing Home For patients who do not require hospitalization, there is little evidence to support the superiority of one antibiotic over another. Limited guidelines and expert opinion recommend two equally-acceptable options, both of which focus on S. pneumoniae as the likely cause. These options are shown in Table 2. Oral therapy is preferred over parenteral therapy, though cephalosporins can be given intramuscularly if needed.
Table 2. Antibiotics for Treating Pneumonia in Nursing Home Patients in the Nursing Home
Option 2: Amoxicillin/clavulanate extended release or a 2nd or 3rd generation cephalosporin
Azithromycin or doxycycline
In the Hospital For patients who have more severe illness and require hospitalization, methicillin-resistant S. aureus (MRSA) and Pseudomonas aeruginosa are more likely to be involved. Current practice guidelines thus recommend treating hospitalized patients with antibiotics that cover these microbes. The recommended regimens are shown in Table 3.
|Table 3. Antibiotics for Treating Pneumonia in Hospitalized Nursing Home Patients
Older adults in nursing homes often have multiple medical problems and take many medications, all of which may complicate antibiotic dosing. Drug interactions also pose a challenge, as each antibiotic should be assessed for potential interactions with the patient's other medications.
Many patients have impaired renal function, so medications that undergo renal excretion must be dosed appropriately after estimating creatinine clearance. Furthermore, in patients with overtly impaired renal function, it is best to completely avoid some antibiotics altogether - like aminoglycosides. Imipenem should be used with caution or not at all for patients who have seizure disorders, as this drug is associated with an increased rate of seizures.
References and Resources
- American Thoracic Society; Infectious Diseases Society of America. Guidelines for the management of adults with hospital-acquired, ventilator-associated, and healthcare-associated pneumonia. Am J Respir Crit Care Med. 2005;171(4):338-416.
- Casey C, Fullerton M, Somerville N. Common questions about pneumonia in nursing home residents. Am Fam Physician. 2015; 92(7):612-620.
- El Solh AA, Akinnusi ME, Alfarah Z, Patel A. Effect of antibiotic guidelines on outcomes of hospitalized patients with nursing home-acquired pneumonia. J Am Geriatr Soc. 2009; 57:1030-1035.
- Mazumder SA. Nursing home acquired pneumonia. Medscape. Dec 14, 2018.
- Mills K, Nelson AC, Winslow BT, Springer KL. Treatment of nursing home-acquired pneumonia. Am Fam Physician. 2009; 79: 976-982.
- Pneumonia in adults: diagnosis and management. Clinical guideline. 3 December 2014.