The Cath Lab Nurse Role Explained, and How Theatre Nurses Move Into It

Sep 30

4 min read

A cath lab nurse works in the cardiac catheter laboratory, where cardiologists diagnose and treat heart conditions through a catheter rather than an open incision.

For theatre nurses in Australia and New Zealand it is one of the more natural moves outside the main theatre suite. Aseptic discipline, equipment knowledge and close work with a proceduralist all carry across, while the patient is often under sedation rather than general anaesthesia and the clinical focus shifts to the heart's rhythm and pressures.

This Theatre Careers Bulletin sets out what the cath lab nurse role involves, what labs look for when they hire, and how theatre nurses make the move.

What a cath lab nurse does day to day

Cath lab lists cover diagnostic coronary angiography and interventional work such as percutaneous coronary intervention (PCI), where a narrowed coronary artery is opened with a balloon and usually a stent. Depending on the service, the same lab may also support electrophysiology studies and ablation, and structural heart procedures.

The Cardiac Society of Australia and New Zealand (CSANZ) Consensus Statement of Standards for Interventional Cardiovascular Nursing Practice describes three nursing functions in each case:

Scrubbed: primary assistance to the interventional cardiologist at the sterile field, handling the catheters, wires and devices used in the case.
Scout: managing equipment and medicines, and leading the nursing response if the patient deteriorates.
Monitoring: dedicated haemodynamic monitoring of the patient, recording pressures, rhythm and vital signs throughout the case.

The standard discourages one person covering more than one of these functions at the same time, and recommends that every nurse in the team is trained to interchange roles when needed. In practice that means a cath lab nurse is expected to be competent across all three, not only at the sterile field.

Around the procedure itself, the role includes preparing the patient, giving and monitoring sedation within the team's protocols, managing the vascular access site and caring for the patient in the recovery period afterwards.

Radiation is part of every case

The cath lab uses X-ray imaging in every case, so radiation safety is a core competency rather than an occasional consideration. Staff wear lead aprons and thyroid collars and position themselves to limit exposure, and dose monitoring follows the local rules.

The Australian Radiation Protection and Nuclear Safety Agency (ARPANSA) notes that all Australian jurisdictions apply a uniform occupational limit of 20 mSv a year, and that cardiology is one of the areas where exposure to the eye can reach levels where cataracts are a concern. Eye protection is part of the kit for that reason.

If you have worked orthopaedic or vascular lists with an image intensifier, the principles will be familiar. The difference is that in the cath lab imaging is part of every case, every day.

What labs look for when they hire

The CSANZ standard sets out a foundation knowledge base for cath lab nurses. It covers cardiac anatomy and physiology, acute coronary syndromes, arrhythmia interpretation, haemodynamic monitoring, vascular access and its complications, temporary transvenous pacing, intra-aortic balloon pump care, medical emergencies in the lab, aseptic technique, sedation and airway management, medications and contrast media, and radiation safety.

For nurses on the on-call team it also expects Advanced Life Support (ALS) accreditation, IV cannulation, and 12-lead ECG acquisition and interpretation. It states that nurses caring for critically ill patients in this setting practise at a specialist level, with educational preparation at postgraduate level.

Employer requirements vary. A Cath Lab Nurse role we are recruiting for in Queensland asks for at least three years' cardiac catheter laboratory experience across diagnostic and interventional procedures, and flexibility across the full roster, including weekends. It is advertised at $42.50 to $54.62 an hour plus super and salary packaging, with shift and weekend penalties on top for eligible staff. On a 38-hour week that is about $84,000 to $108,000 a year before penalties ($42.50 x 38 x 52 = $83,980; $54.62 x 38 x 52 = $107,929). Our guide to theatre nurse hourly rate or annual salary explains how to compare offers quoted in different ways.

That role is for nurses who already have cath lab experience. For nurses new to the specialty, the CSANZ standard describes a structured development pathway: orientation, then skill acquisition, then transition to practice, over roughly the first year in the lab.

What transfers from theatre, and where the gaps usually are

Theatre nurses bring a lot that cath lab teams value: sterile field discipline, equipment and consumables management, careful documentation, and experience working closely with proceduralists when a case changes direction.

The gaps are usually on the cardiac side. Arrhythmia recognition, haemodynamic waveforms, cardiac medications and managing a patient who deteriorates while awake on the table are areas where coronary care and critical care nurses tend to have a head start. If you are coming from anaesthetics or PACU and recovery, your airway, sedation and monitoring experience covers part of that ground already.

How theatre nurses make the move

Practical steps that line up with the CSANZ standard include:

An ALS course and a structured ECG and arrhythmia course, both of which sit in the standard's knowledge base.
Time on vascular, cardiothoracic or image-guided lists, which gives you relevant experience to discuss at interview.
A clear answer from each lab on how it orientates and trains new staff. The competency pathway matters more than the title on the advert.
Postgraduate study in cardiac or critical care nursing, if you plan to stay in the specialty long term.

Is the cath lab right for you?

The cath lab tends to suit nurses who like procedural work, quick turnaround between cases and a patient they can talk to during the procedure. It may suit you less if you want long, complex surgical cases or if you are building towards a particular scrub scout specialty. Our piece on scrub scout specialty choice covers those decisions, and our endoscopy nurse role explained bulletin looks at another procedural area outside the main theatre.

The live roles on our theatre nursing jobs page show what labs and theatres are asking for right now.

Sources: CSANZ, Consensus Statement of Standards for Interventional Cardiovascular Nursing Practice (ratified July 2017); ARPANSA, Occupational exposure: medical workers.