CPT® Code 0427T

Deleted

1. Indications

The procedure is indicated for patients diagnosed with central sleep apnea (CSA), which may arise from various underlying conditions. These include:

• Cardiovascular Disease - Conditions affecting the heart and blood vessels that may contribute to CSA.
• Stroke - A cerebrovascular event that can impair the brain's ability to regulate breathing.
• Conditions Affecting the Neck or Brainstem - Anatomical or pathological issues in these areas that disrupt normal respiratory signaling.
• Morbid Obesity - Excess body weight that can lead to respiratory complications, including CSA.
• Narcotic Use - The use of narcotic medications that may depress the central nervous system and affect breathing patterns.

2. Procedure

The procedure for the insertion or replacement of the neurostimulator system involves several detailed steps:

• Step 1: Patient Preparation - The patient is positioned comfortably, and conscious sedation is administered to allow communication with the physician during the procedure.
• Step 2: Venous Access - A small incision is made to gain access to the right side venous system, typically through the right axillary, cephalic, or subclavian vein. A sheath is placed to facilitate the introduction of access wires.
• Step 3: Catheter Advancement - Two long access wires are advanced into the vena cava, and a guide catheter is delivered over one of the access wires into the superior vena cava, then advanced into the left brachiocephalic vein (LBC) with the tip positioned at the left subclavian junction.
• Step 4: Visualization and Access - Using contrast, venous branches are identified, and an inner catheter is threaded into the guide catheter and telescoped beyond it. The opening of the pericardiophrenic vein (PPV) is visualized and accessed with a coronary wire while the patient is instructed to take deep breaths to aid in advancement.
• Step 5: Lead Deployment - The guide catheter is advanced, and the inner catheter is removed. The stimulation lead is then loaded and deployed through the guide catheter to the target location.
• Step 6: Sensing Lead Placement - A second venous access wire is used to thread a coronary sinus right guide catheter to a point between the tracheal carina and the junction of the brachiocephalic veins. The azygos vein opening is visualized with contrast, and a wire is advanced to the diaphragm level, again using deep breaths or coughing to facilitate this process.
• Step 7: Finalizing Lead Placement - The inner catheter is advanced over the wire, followed by the guide catheter, which is advanced to the right lateral branch of the azygos vein for lead deployment. The placement of the leads is assessed, and stimulation is measured to ensure complete contraction of the hemidiaphragm.
• Step 8: Pulse Generator Connection - The pulse generator is connected to the implanted leads and placed in a subcutaneous pocket formed below the clavicle. The unit is secured in place with a single ligature, and its function is checked to ensure proper operation.

3. Post-Procedure

After the procedure, the patient is monitored for any immediate complications and assessed for the functionality of the neurostimulator system. Recovery may involve observation for any adverse effects related to the sedation or the surgical site. Patients are typically provided with specific post-operative care instructions, including activity restrictions and signs of potential complications to watch for. Follow-up appointments are essential to evaluate the effectiveness of the neurostimulator system in managing central sleep apnea and to make any necessary adjustments to the device.