We present a detailed Doppler evaluation of a left atrial myxoma. Doppler recordings varied considerably with the position of the patient and of the sample volume. Maximum obstruction to flow was observed in the left lateral position; but no gradient was present when sitting upright. These findings provide a haemodynamic explanation for the positional variation of murmurs characteristic of atrial myxomas.
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| http://dx.doi.org/10.1016/0167-5273(91)90052-q | DOI Listing |
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