What Is Cardiac Catheterization?

Cardiac catheterization (cath) is a minimally-invasive procedure used to diagnose and treat some cardiovascular conditions. During the cath, the physician inserts a thin hollow tube, called a catheter, into an artery or vein in the patient’s groin, neck or arm. The catheter is then threaded through the blood vessels to the patient’s heart.

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How Is Cardiac Catheterization Used?

In the Children’s Heart Institute cath labs, the cath team performs a wide range of diagnostic and therapeutic procedures, including:

  • Diagnostic procedures: measuring pressure and oxygen levels in the heart, obtaining biopsies and evaluating the structures of the heart.
  • Interventional procedures: examples include implanting valves in the heart, placing stents to open narrowed vessels, placing occlusive devices (to treat conditions such as atrial septal defects, ventricular septal defects and patent ductus arteriosus) and opening valves (balloon valvuloplasty) and vessels with angioplasty balloons.
  • Electrophysiology procedures, including testing for and treating irregular heartbeats (arrhythmias) and placing implantable cardioverter defibrillators (ICDs) and pacemakers.

About Cardiac Catheterization at the Children's Heart Institute

The Children’s Heart Institute at Children’s Memorial Hermann Hospital offers innovative solutions for patients with congenital or acquired heart disease. In collaboration with McGovern Medical School at UTHealth, the affiliated cath team performs a wide variety routine and complex cath procedures.

They collaborate with the cardiac surgeons to perform hybrid procedures that use tools from both catheterization and surgery to help the child in the least invasive way possible.

In addition, the cath team works in collaboration with other departments within Children's Memorial Hermann Hospital to provide our pediatric patients with seamless, comprehensive care.

Our Cath Lab

Specially-trained affiliated pediatric cardiologists and pediatric anesthesiologists, supported by a team of nurses and technologists, perform cardiac cath procedures in our state-of-the-art, child-friendly cath lab. The lab is situated within Children’s Memorial Herman Hospital, in close proximity to related departments and services offered on campus. This provides patients with direct access to multispecialty care from affiliated physicians, should additional needs arise.

Cath Lab Procedures


Contact Us

If you have any questions, use the online tool below to help us connect with you. To refer a patient or schedule an appointment, please contact our clinic using the information below.

  • Pediatric Cardiology Clinic
    The University of Texas Health Science Center Professional Building
    6410 Fannin, Suite 370
    Houston, TX 77030
    Phone: (713) 486-6755 (Appointment Line)
  • Pediatric and Congenital Heart Surgery Clinic
    The University of Texas Health Science Center Professional Building
    6410 Fannin, Suite 370
    Houston, TX 77030
    Phone: (713) 500-5746

To contact Children’s Heart Institute at Children’s Memorial Hermann Hospital, please fill out the form below.


Thank you for contacting the Children’s Heart Institute at Children’s Memorial Hermann Hospital. We have received your inquiry, and a team member will contact you soon.

If you need more immediate assistance, please call us during business hours at (713) 486-6755.

If you are experiencing a medical emergency, call 911 or go to the nearest emergency room.

The Children’s Heart Institute is a collaboration between the affiliated physicians at McGovern Medical School at The University of Texas Health Science Center at Houston (UTHealth Houston) and Children’s Memorial Hermann Hospital. Typically, patients are seen on an outpatient basis at a UT Physicians clinic with all inpatient procedures performed at Children’s Memorial Hermann Hospital.