A modern cardiac catheterization laboratory is built around combining high-resolution real-time imaging with precise hemodynamic monitoring and immediate resuscitation capabilities. Here is a breakdown of the core equipment that makes up a standard cardiac cath lab:
1. Imaging and Fluoroscopy Hardware
- The C-Arm: The centerpiece of the lab. It houses the X-ray tube (usually under the table) and the digital flat-panel detector (image intensifier in older models) above the patient. It allows for multi-axis cranial/caudal and RAO/LAO angulations.
- Radiolucent Patient Table: A motorized, free-floating carbon fiber table that allows smooth panning and panning without interfering with X-ray penetration.
- Suspended Monitor Banks: Ceiling-mounted booms carrying multiple high-definition displays. These show live fluoroscopy, reference loops, hemodynamic data, and secondary imaging modalities (like IVUS/OCT).
2. Hemodynamic Monitoring System
- The Polygraph: A multichannel physiological recorder that continuously processes and displays the patient’s ECG (usually 12-lead), SpO2, and non-invasive blood pressure.
- Invasive Pressure Transducers: Connected to fluid-filled manifolds, these provide real-time, beat-to-beat pressure waveforms from the aortic root, left ventricle, or pulmonary artery during right heart caths.
3. Contrast and Fluid Delivery
- Automated Power Injector: Essential for delivering precise volumes of iodinated contrast media at specific flow rates (e.g., for left ventriculography or aortograms).
- Manifold System: A sterile setup of stopcocks allowing the operator to seamlessly switch between pressure monitoring, contrast injection, and saline flushing.
4. Resuscitation and Mechanical Support
Given the high-acuity nature of the procedures, rapid-response equipment is kept directly in the room:
- Biphasic Defibrillator: Usually with pacing capabilities, kept continuously attached to the patient via radiolucent pads during high-risk cases.
- Crash Cart: Fully stocked with emergency ACLS medications, intubation gear, and temporary transvenous pacing kits.
- Intra-Aortic Balloon Pump (IABP) Console: Or other temporary mechanical circulatory support systems (like Impella) for patients in cardiogenic shock or high-risk PCI.
5. Intravascular Diagnostics (Modern Standards)
While technically “add-ons,” these are now considered fundamental in modern labs for optimizing stent deployment and assessing lesion severity:
- IVUS / OCT Consoles: Intravascular Ultrasound and Optical Coherence Tomography machines for high-resolution, cross-sectional imaging of the coronary lumen and plaque morphology.
- FFR / iFR Systems: Consoles to measure Fractional Flow Reserve or Instantaneous Wave-Free Ratio to determine the physiological significance of intermediate stenoses.
6. Radiation Safety Equipment
- Shielding: Ceiling-suspended lead glass shields and table-mounted lead skirts to protect the primary operator from scatter radiation.
- Personal Protective Equipment (PPE): Lead or non-lead equivalent aprons, thyroid collars, leaded glasses, and real-time personal dosimeters.