Pulmonary disease (idiopathic pulmonary fibrosis [IPF]), mRNA, gene expression analysis of 190 genes, utilizing transbronchial biopsies, diagnostic algorithm reported as categorical result (eg, positive or negative for high probability of usual interstiti
CPT4 code
Name of the Procedure:
Pulmonary disease (idiopathic pulmonary fibrosis [IPF]), mRNA, gene expression analysis of 190 genes, utilizing transbronchial biopsies. Also known as "mRNA gene expression analysis for IPF" or "Transbronchial biopsy for gene expression in pulmonary fibrosis."
Summary
This procedure involves taking small tissue samples from your lungs to analyze the activity of 190 genes. This helps in diagnosing idiopathic pulmonary fibrosis (IPF), a type of lung disease causing scarring of the lung tissue. The results are provided as a categorical outcome, indicating the probability of having usual interstitial pneumonia (UIP), a common pattern seen in IPF.
Purpose
The procedure addresses idiopathic pulmonary fibrosis (IPF), which causes progressive scarring of the lung tissue. The goal is to analyze gene expression to accurately diagnose IPF and determine the likelihood of usual interstitial pneumonia (UIP). Early and accurate diagnosis helps tailor appropriate medical treatments.
Indications
- Unexplained chronic cough
- Shortness of breath
- Persistent lung abnormalities on imaging studies (e.g., X-rays, CT scans)
- Suspected IPF based on clinical evaluation and imaging
Preparation
- Patients may need to fast for a few hours prior to the procedure.
- Medication adjustments, particularly for blood thinners, may be necessary.
- Initial diagnostic tests, such as pulmonary function tests (PFTs) and imaging studies, help guide the decision for this procedure.
Procedure Description
- The patient is given a sedative and/or local anesthesia to minimize discomfort.
- A bronchoscope (a thin, flexible tube with a camera) is inserted through the nose or mouth into the lungs.
- Small tissue samples (biopsies) are taken from different lung regions using tiny forceps.
- The tissue samples are analyzed using advanced molecular techniques to assess mRNA expression of 190 genes.
- Results are categorized as either "high probability" or "low probability" for usual interstitial pneumonia (UIP).
Duration
The procedure typically takes around 30 to 60 minutes.
Setting
The procedure is usually performed in a hospital or an outpatient clinic with specialized facilities for bronchoscopy.
Personnel
- Pulmonologist (a lung specialist)
- Bronchoscopy technician
- Nurse
- Anesthesiologist (if deep sedation or general anesthesia is required)
Risks and Complications
- Minor bleeding at the biopsy site
- Infection
- Pneumothorax (collapsed lung)
- Bronchospasm (tightening of the airways)
- Rare adverse reactions to anesthesia or sedatives
Benefits
- Accurate and early diagnosis of idiopathic pulmonary fibrosis (IPF)
- Tailored treatment plans leading to better management of the disease
- Improvement in quality of life with timely intervention
Recovery
- Patients are observed for a few hours post-procedure to monitor for complications.
- Mild throat discomfort or cough may be experienced, which typically resolves within a day.
- Follow-up appointments are crucial to discuss the results and further treatment.
Alternatives
- High-resolution computed tomography (HRCT) scan to identify characteristic patterns of lung fibrosis
- Surgical lung biopsy, which is more invasive but can provide a larger tissue sample
- Non-invasive blood tests and imaging as preliminary diagnostic steps
Patient Experience
During the procedure, patients may feel slight discomfort or pressure but are usually sedated for relaxation. Post-procedure, there may be mild throat soreness and cough. Pain management is typically straightforward, and comfort measures like throat lozenges or mild pain relievers can be used.
By following these guidelines and instructions, patients can better understand the entire process, from preparation to recovery, leading to a smoother and more informed experience.