Cooling the body to stop blood circulation and protect the brain during surgery
If you need surgery to repair damaged or abnormal blood vessels that lead to or from the brain, your doctor may recommend deep hypothermic circulatory arrest (DHCA), also known as circulatory arrest under deep hypothermia — cooling your body to stop blood circulation and brain function for up to 40 minutes. Also known as a stand-still surgery, this therapy protects the brain while providing a bloodless operating site.
At a normal body temperature of 98.6 degrees Fahrenheit, you would suffer brain damage after only a few minutes if blood were kept from the brain. But when your body is cooled below 57 degrees Fahrenheit, blood circulation can be stopped safely for much longer, allowing surgeons to make necessary repairs to damaged blood vessels.
Your doctor may recommend DHCA if, for example, you need surgery to remove certain venous tumors called Venous Tumors, or to repair an aortic arch aneurysm or arteriovenous malformation in the neck or head.
Procedure
You’ll be put to sleep using general anesthesia and placed on a cardiopulmonary bypass, a machine that replaces the function of the heart and lungs. Your blood will be cooled by the heart-lung machine until your heart stops beating. The machine will continue to circulate cooled blood until your brain function ceases as well. The machine will then be turned off, and surgery will begin.
After surgery is completed, the heart-lung machine will be turned back on and will slowly raise your temperature by circulating warmed blood throughout the body. The length of the surgery and recovery will depend on the specific type of procedure you need.
Conditions
Aneurysms
An aneurysm is a ballooning or expansion of a blood vessel. Aneurysms most often develop in arteries, though they also can develop in veins or even inside the heart.
Aortic Arch Aneurysm
An aortic arch aneurysm is a bulge in the wall of the curve of the candy cane-shaped aorta, the body’s largest artery that carries blood from the heart to the rest of the body.
Venous Tumors
Venous tumors are tumors that grow on or in veins.
Our providers
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Cardiac Critical Care
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Chadi Tanios Abouassaly, MD
Cardiac Critical Care
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Eric Blaine Corder, MD
Cardiac Critical Care
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Yasir Ahmed Ibrahim Hamad, MBBS
Cardiac Critical Care
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Kevin Grant Handy, MD
Cardiac Critical Care
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Michael Jeffrey Hockstein, MD
Cardiac Critical Care
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Benjamin Braun Kenigsberg, MD
Cardiac Critical Care
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Brian George Lee, MD
Cardiac Critical Care
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Alena Lira, MD
Cardiac Critical Care
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Stephen M. Luczycki, MD
Cardiac Critical Care
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Alexander I. Papolos, MD
Cardiac Critical Care
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Pamela M. Paufler, MD
Cardiac Critical Care
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Nimesh Satish Shah, MD
Cardiac Critical Care
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Seife Yohannes, MD
Cardiac Critical Care
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Jennifer Yu, MD
Neurocritical Care, Critical Care Medicine, Surgical Critical Care & Cardiac Critical Care
Show All Cardiac Critical Care
Our locations
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MedStar Union Memorial Hospital
201 E. University Pkwy. Baltimore, MD 21218
MedStar Washington Hospital Center
110 Irving St. NW Washington, DC 20010
Related services
Ask MedStar Heart & Vascular Institute
Have general questions for our heart and vascular program? Email us at AskMHVI@medstar.net. If you have clinically-specific questions, please contact your physician’s office.