Author + information
- Received July 30, 1984
- Revision received April 30, 1985
- Accepted May 16, 1985
- Published online October 1, 1985.
- Gregory C. Rose, MDa,
- William F. Armstrong, MD, FACC,
- Yousef Mahomed, MD, FACC and
- Harvey Feigenbaum, MD, FACC
- ↵aAddress for reprints: Gregory C. Rose, MD, Indiana University School of Medicine, University Hospital N-562, 926 West Michigan Street, Indianapolis, Indiana 46223.
Transient hypoxemia is not uncommon after major cardiac or thoracic surgery. The differential diagnosis includes atelectasis, pulmonary embolus, pneumonitis, congestive heart failure and several other diverse cardiovascular and pulmonary problems. Less well recognized is transient right to left intracardiac shunting through a patent foramen ovale or previously unsuspected atria) septal defect. Three cases of clinically important hypoxemia associated with right to left shunting after aortocoronary bypass surgery are presented. The right to left shunting was documented with contrastenhanced echocardiography, which is a simple, inexpensive and accurate means of screening patients for intracardiac right to left shunts and may play a valuable role in the postoperative management of patients.
This study was supported in part by the Herman C. Krannert Fund, Indianapolis, Indiana; Grants HL-06308 and HL-07182 and Clinical Investigator Award HL-01041-02 from the National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland; the American Heart Association, Indiana Affiliate, Indianapolis, Indiana; and the Whitaker Foundation, Camp Hill, Pennsylvania.
- Received July 30, 1984.
- Revision received April 30, 1985.
- Accepted May 16, 1985.
- American College of Cardiology Foundation