2.1 Procedure & Control Room Setup

Procedure & Control Room Setup

Quick Answer: Before any patient enters the cath lab, the RCIS verifies that the procedure room, control room, fluoroscopy system, hemodynamic monitors, contrast injectors, and emergency equipment are functional, calibrated, and positioned for safe case flow. Radiation QC/QA checks and ALARA readiness are part of the same pre-case checklist — not optional add-ons.

Pre-procedural room and equipment setup maps directly to CCI Domain A, Task 1: prepare the procedure room and control room, confirm radiation equipment readiness, and perform quality control/quality assurance checks. Although the pre-procedural domain is only 8% of the RCIS exam matrix, setup errors propagate into every subsequent task — a mis-leveled transducer skews hemodynamics, an uncalibrated dose display violates ALARA documentation, and a missing crash-cart pad costs seconds in cardiac arrest. The RCIS owns the operational readiness of the environment even when a biomedical engineer maintains the equipment long-term.

Cath Lab Zones: Procedure Room vs. Control Room

Modern cardiac catheterization suites are divided into distinct functional zones. Understanding what belongs where prevents contamination, radiation exposure, and workflow bottlenecks.

The procedure room must be cleaned and decontaminated between cases per institutional infection-control policy. High-touch surfaces — table rails, control panels, injector keypads — are wiped with an EPA-registered disinfectant. The control room is a non-sterile zone; personnel who circulate between zones must observe hand hygiene when returning to the sterile field.

Fluoroscopy & Imaging System Readiness

The fluoroscopy/angiography system is the central tool of invasive cardiology. Pre-case checks go beyond "does it turn on?" — they confirm image quality, safety interlocks, and dose reporting.

Pre-case fluoroscopy checklist:

1. Power-on self-test (POST) — System completes initialization without error codes; tube and detector temperatures within operating range.
2. Image quality — Test pattern or phantom image shows uniform brightness, no dead pixels, adequate resolution for vessel detail.
3. Collimation — Manual and automatic collimators open/close symmetrically; last-image-hold (LIH) and stored fluoroscopy loops function.
4. Pedal function — Fluoroscopy and cine pedals respond; foot-switch lockout prevents unintended exposure.
5. Table and C-arm movement — Table tilt, cradle, and gantry rotation move smoothly; locks engage; no cable pinch points.
6. Dose display — Cumulative air kerma (CAK) and kerma-area product (KAP/PKA) reset to zero for the new case; dose-rate display active.
7. Recording — Cine and DSA modes capture to PACS; patient demographics match the scheduled case.

Flat-panel detectors have largely replaced image intensifiers, but RCIS candidates should know both: image intensifiers use input phosphor and electron optics; flat panels use direct or indirect digital conversion with higher dynamic range and lower patient dose at equivalent signal.

Radiation QC/QA Program

Regulatory and accreditation bodies (The Joint Commission, state radiation control agencies, FDA under 21 CFR 1020.30) require a documented quality control (QC) program for fluoroscopic equipment. Quality assurance (QA) is the broader management process ensuring QC results are reviewed, trends tracked, and corrective actions taken.

The RCIS participates in daily constancy checks — verifying image quality, collimation, and dose-display reset — and reports anomalies to the radiation safety officer (RSO) or medical physicist. ALARA (As Low As Reasonably Achievable) is applied from the first moment of setup: ceiling-suspended lead shields, table-mounted skirts, and portable barriers are positioned before the patient arrives. Personnel wear 0.5 mm Pb-equivalent aprons minimum, thyroid collars, and leaded glasses when available.

Dosimetry: Best practice uses dual badges — one at the collar (outside the lead apron) to measure dose to the eyes, thyroid, and unshielded head, and one at the waist (under the apron) to assess whole-body effective dose. Ring dosimeters may be required for high-volume operators. Badges are exchanged monthly (or per program policy) and must never be shared or left in the procedure room between cases.

Hemodynamic, Injector & Support Systems

Pressure monitoring accuracy depends on transducer setup performed before the first waveform appears on screen.

Transducer zeroing and leveling protocol:

• Close the stopcock to the patient and open to air (atmosphere).
• Press Zero on the monitor — the waveform should flatline at 0 mmHg.
• Level the transducer stopcock at the phlebostatic axis: 4th intercostal space, mid-axillary line (same height as the right atrium in supine patients).
• Open to the patient and confirm a physiologic waveform (RA ~2–6 mmHg, PA ~15–30/4–12 mmHg).

The power contrast injector is checked for syringe size, contrast type (low-osmolar or iso-osmolar non-ionic preferred), air-bubble detection, pressure-limit settings, and IV connection integrity. Hemodynamic consoles, 12-lead ECG, pulse oximetry, and non-invasive blood pressure cuffs are verified against the patient monitor module.

Emergency Equipment Verification

Every cath lab case carries risk of ventricular fibrillation, tamponade, allergic reaction, and vascular catastrophe. Emergency equipment is verified before the patient enters — not retrieved after an event begins.

The RCIS documents completion of the pre-case checklist per institutional policy. Any equipment deficiency is resolved or the case is delayed until the deficiency is corrected — patient safety overrides schedule pressure.