Cardiac Catheterization no longer part of the anesthesia department A (no belonging to cardiac anesthesia, which is a different department)

The study is a comparison of a patient warming system using a forced-air, non-compressible under-body mattress (Möck & Möck, Hamburg, Germany) versus a regular forced-air underbody mattress system during pediatric cardiac catheterization in 40 patients.

The hypothesis is, that the non-compressible mattress provides better warming with less incidence of perioperative hypothermia (Core temperature < 36 °C) and faster warming slope (°C / time). The study is prospective, randomized, controlled and single-blinded.

Inclusion criteria will be pediatric patients < 1 year of age without fever or a treatment of therapeutic hypothermia.

Inclusion Criteria:

• Pediatric patient scheduled for cardiac catheterization (diagnostic and/or interventional)< 1 year old

Exclusion Criteria:

• fever or therapeutic hypothermia