Venous return curves obtained from graded series of valsalva maneuvers

Mastenbrook, S. M., Jr.

The effects were studied of a graded series of valsalva-like maneuvers on the venous return, which was measured transcutaneously in the jugular vein of an anesthetized dog, with the animal serving as its own control. At each of five different levels of central venous pressure, the airway pressure which just stopped venous return during each series of maneuvers was determined. It was found that this end-point airway pressure is not a good estimator of the animal's resting central venous pressure prior to the simulated valsalva maneuver. It was further found that the measured change in right atrial pressure during a valsalva maneuver is less than the change in airway pressure during the same maneuver, instead of being equal, as had been expected. Relative venous return curves were constructed from the data obtained during the graded series of valsalva maneuvers.

Document ID

19740011606

Acquisition Source

Legacy CDMS

Document Type

Contractor Report (CR)

Authors

Date Acquired

September 3, 2013

Publication Date

January 1, 1974

Subject Category

Report/Patent Number

Accession Number

74N19719

Funding Number(s)

Distribution Limits

Public

Work of the US Gov. Public Use Permitted.

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