• Daniela Alexianu, Eric T Skolnick, Annie C Pinto, Susumu Ohkawa, David P Roye, David E Solowiejczyk, Joshua E Hyman, and Lena S Sun.
• Department of Anesthesiology, Columbia University College of Physicians & Surgeons and The Children's Hospital of the New York-Presbyterian, New York, New York 10032, USA.
• Anesth. Analg. 2004 Feb 1;98(2):334-5, table of contents.

UnlabelledA 34-mo-old boy with neurofibromatosis, scoliosis, and pectus excavatum developed severe hypotension when positioned prone. A magnetic resonance image study revealed neurofibromas encircling the great vessels. During the next anesthetic the patient was placed in the prone position on transverse bolsters and hypotension ensued again. A transesophageal echocardiogram (TEE) revealed compression of the right ventricle by the sternum. When the child was turned supine, the blood pressure returned to baseline. The patient was returned to the prone position, this time with bolsters placed longitudinally, without problem. This case supports a cardiac evaluation, possible intraoperative TEE, and avoidance of sternal pressure in patients with chest wall deformities requiring prone positioning.ImplicationsA child with neurofibromatosis, scoliosis, and a chest wall deformity presenting for spinal fusion developed severe hypotension while prone. This was due to compression of the heart by the sternum, not compression of the great vessels by neurofibromas. Sternal pressure in prone patients with chest wall deformities should be avoided. Unique management included the use of transesophageal echocardiography to determine the cause of the hypotension.

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