Medical Services



The Cardiodiagnostics department at the Phoenix Children's Heart Center is located on the 1st floor of the Main building at Phoenix Children's Hospital.

Cardiodiagnostics is often referred to as the "Echo Lab" and is a non-invasive, ultrasound diagnostic center. State-of-the-art equipment is used here to image the heart with 2-D and 3-D technology and perform hemodynamic flow studies. Once the cardiologist makes the diagnosis of acquired heart disease, this department will play a more in-depth role in developing a treatment plan for your child.

What is Cardiodiagnostics?

The pediatric medical team at Phoenix Children's Heart Center uses the latest equipment and technology to offer the area’s most accurate and effective cardiac diagnostic services. Once the cardiologist diagnoses a heart defect or disease, the team plays an in-depth role in developing a treatment plan for the child.

Diagnosing and evaluating heart disease in children can be complex and require a variety of tests and evaluations, including:

  • Physical Examination. This examination may include a head-to-toe assessment to help detect possible heart disease or help determine how well a child is coping with existing heart problems.
  • Blood Tests. These tests help a doctor evaluate a child’s illness or monitor health after surgery. Types of blood tests include blood count, electrolytes, total protein and albumin, an evaluation of the effectiveness of anticoagulant drugs, blood gas and genetic blood tests.
  • Echocardiography. This procedure assesses the heart's structures and function. Echocardiography is also called echo, cardiac ultrasound or ultrasonography, or cardiac Doppler.
  • Holter Monitoring. A prolonged type of ECG tracing, called a Holter monitor, can capture any abnormal heartbeats or rhythms that may be causing a child's symptoms, especially if they occur frequently. The Holter monitor test records a child's ECG tracing continuously for 24 or more hours.
  • Exercise (EKG/ECG) Testing. An ECG (also called EKG) provides one of the easiest and quickest ways to evaluate the heart. Electrodes (small, plastic patches) are placed at certain locations on a child's chest, arms and legs. Once the electrodes are connected to the ECG machine by lead wires, the electrical activity of a child's heart can be measured, interpreted and printed out for a physician’s evaluation. When an ECG is monitored while a child exercises on a treadmill or stationary bike, it can assess the heart’s response to stress or exercise.
  • Tilt Table Evaluation. The tilt table procedure can identify what is causing the onset of syncope (fainting or temporary loss of consciousness) by making changes in the child’s posture from lying to standing.
  • Fetal Stress Testing. During a woman’s late pregnancy or labor, a physician or midwife may recommend monitoring the rate and rhythm of the fetal heartbeat to evaluate the fetus’ wellbeing.
  • Additional cadiac imaging studies as needed.

Who is a Candidate?

The Phoenix Childrens' Heart Center’s cardiac specialists offer numerous non-invasive cardiology services to accurately and efficiently diagnose and treat children’s heart complications.


Diagnosing and evaluating heart disease in children can be complex and requires clinical care by a physician or other healthcare professional. Listed in the directory below are some means by which heart disease in children is evaluated and diagnosed.

Contact us

Cardiology / Cardiothoracic Surgery: (602) 888-0788
Cardio Interventional Suite (Cath Lab): (602) 933-1597
Cardio Diagnostics (ECHO, Holter): (602) 933-1610

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