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Medical News
October 26, 1964

Simultaneous Intracardiac Sound, Pressure Recordings Obtained

JAMA. 1964;190(4):27. doi:10.1001/jama.1964.03070170152044

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A technique for obtaining intracardiac sound and pressure recordings simultaneously was described at the meeting of the American College of Physicians by William L. Page, MD, Department of Medicine, Ohio State University School of Medicine.

"The sound tracings obtained are of excellent quality and are without delay," Page said. "The pressure tracings obtained also are of excellent quality and the transmission delay is on the order of 0.01 seconds."

The technique employs a simple modification of the standard transseptal catheter method. A standard No. 9 Ross transseptal catheter is introduced into the left atrium over

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