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Mercy Pediatric Cardiology Clinic
Serving the heart-care needs of infants, children and adolescents

Mark Zittergruen, MD, MBA, FACC, FAAP

Mark Zittergruen,

Mercy Pediatric Cardiology Clinic is dedicated to serving the heart-care needs of infants, children and adolescents, as well as the concerns of their families. Our practice is exclusively geared toward children, from our kid-friendly exam rooms to our experienced staff. Providing the highest level of pediatric cardiology care for your child is our primary concern.

Echocardiogram Instructions

If your child is scheduled to have an echocardiogram (echo) prior to his or her office visit, please consider the following helpful tips:

  • Bring your child’s favorite DVD to play during the exam.
  • Toddlers and infants may sleep through testing, so it can be helpful to avoid napping prior to the exam.
  • Infants may be occupied by bottle feeding during the exam, so please try to avoid feeding prior to testing.
  • Please avoid scheduling your child’s immunizations on the same day as the echo. Children often do not feel well following injections, which can make testing difficult.

If your child’s echocardiogram is completed outside of our office or Mercy Medical Center, please bring a copy of the echocardiogram to your child’s appointment. Chest X-rays, when needed, must be completed two days before the scheduled appointment. If the X-ray is not completed by Mercy Medical Center, RCI or UnityPoint, please bring the X-ray with you to your child’s appointment.

If you are unable to complete the chest X-ray two days prior to the appointment, please call (319) 398-6650 to reschedule. We cannot see your child without access to a completed chest X-ray.

Clinic Policies

To make the best use of your time when you are here, we ask that you consider the following polices in advance of your visit:

  • Only two guests will be allowed to accompany the patient back to the exam room; please plan accordingly.
  • In the instance that someone other than a child’s biological parent will be accompanying them, we will need authorization from the parent(s) or proof of guardianship at the time of the appointment.
  • Patients under the age of 18 must be accompanied by a parent or guardian.

You will receive a reminder phone call prior to the scheduled appointment.

Concerns After Office Hours

If you have a concern about your child’s cardiac condition after hours, please call (319) 398-6650. If your child is having a non-cardiac issue, please contact your family physician or pediatrician.

Pediatric Cardiology Educational Videos

Contact Information

8th & 8th Medical Office Building

Mercy 8th & 8th Medical Park
Mercy Campus
Level 4 / Suite 400
788 8th Ave. SE
Cedar Rapids, IA 52401

Park in the lot on the corner of 8th Avenue and 7th Street SE.

Phone Number:

For questions or scheduling, call:
(319) 398-6650

8 a.m. to 5 p.m.
Monday through Friday