Culture, bacterial; aerobic isolate, additional methods required for definitive identification, each isolate
CPT4 code
Name of the Procedure:
Culture, bacterial; aerobic isolate, additional methods required for definitive identification, each isolate (also known as Aerobic Bacterial Culture with Identification)
Summary
This procedure involves taking a sample from a patient to identify bacteria that thrive in the presence of oxygen. The sample is cultured in a lab to grow any bacteria present, and additional methods are used to accurately identify the type of bacteria.
Purpose
The procedure addresses infections suspected to be caused by aerobic bacteria. Its goal is to identify the specific type of bacteria to determine the most effective treatment.
Indications
- Unexplained fever
- Suspected bacterial infections with specific symptoms (e.g., respiratory infection, wound infection)
- Patients not responding to standard antibiotics
- Individuals with weakened immune systems who are prone to bacterial infections
Preparation
- No specific preparation is typically needed for the patient.
- Depending on the suspected infection site, a sample may be taken via swab, blood draw, or another method.
- Inform the healthcare provider about any current medications or underlying health conditions.
Procedure Description
- A sample is collected from the infection site (e.g., blood, wound swab, respiratory secretions).
- The sample is placed in a culture medium and incubated to promote bacterial growth.
- If bacteria grow, various tests (e.g., biochemical tests, molecular methods) are performed to precisely identify the bacterial species.
- Results are interpreted by microbiologists to confirm the type of bacteria.
Tools, Equipment, or Technology:
- Swabs, syringes, or collection containers
- Culture media
- Incubators
- Biochemical testing kits or molecular diagnostic tools
Anesthesia or Sedation:
- Usually not necessary, except for sample collection procedures that might require local anesthesia (e.g., biopsy).
Duration
The culture process may take 1-3 days for initial growth; additional identification methods can take several hours to days depending on the complexity.
Setting
- Samples may be collected in a hospital, clinic, or outpatient setting.
- Laboratory analysis occurs in a specialized microbiology lab.
Personnel
- Nurses or clinicians collect samples.
- Microbiologists or lab technicians perform culture and identification.
- Physicians interpret results and devise treatment plans.
Risks and Complications
- Minimal risks from sample collection (e.g., minor discomfort, bleeding, or infection at the collection site).
- Rarely, false negatives/positives due to sample contamination or improper handling.
Benefits
- Accurate identification of the bacterial cause of infection.
- Tailored antibiotic treatment leading to better outcomes.
- Reduced risk of antibiotic resistance from inappropriate antibiotic use.
Recovery
- Sample collection is minimally invasive; recovery is typically immediate.
- Follow-up instructions depend on the infection site and sample collection method.
- Wait for culture results before starting or adjusting treatment based on physician guidance.
Alternatives
- Empirical antibiotic treatment based on clinical judgment.
- Molecular diagnostic tests (e.g., PCR) for rapid identification.
- The con of empirical treatment is potential ineffectiveness and increased resistance risk, while the pro of molecular tests is faster results but may not be as comprehensive.
Patient Experience
- Minor discomfort during sample collection.
- Patients may experience anxiety while waiting for results.
- Pain management is generally not necessary, but comfort measures like reassuring communication are important.