MEASUREMENT OF LEFT VENTRICULAR FUNCTION DURING ARM ERGOMETRY USING THE VEST™ NUCLEAR PROBE

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Authors
  1. Goodman, L.S.
  2. Goodman, J.M.
  3. Yang, L.
  4. Sloninko, J.
  5. Hsia, T.
  6. Freeman, M.R.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Toronto Univ, Toronto ONT (CAN) School of Physical and Health Education;Toronto Congenital Cardiac Center for Adults, Toronto ONT (CAN);Saint Michael's Hospital, Toronto ONT (CAN)
Abstract
A chest-mounted left ventricular (LV) nuclear probe (VEST™) for use during arm and leg ergometry is presented, with a discussion of the validity and reproducibility of LV function measures at rest and exercise. During both arm and leg ergometry in trained subjects, transient changes in LV function/volumes were observed. LV ejection fraction and relative end-diastolic volumes were 25 to 30% less with the arms versus the legs, agreeing with data from other studies using conventional techniques. At peak exercise with both limbs, LV ejection fraction and relative LV end-systolic volume increased, followed by immediate postexercise normalization. The effect was greatest with the arms and reflects the effect of high intramuscular and arterial pressures generated the arms and reflects the effect of high intramuscular and arterial pressures generated during arm cranking, leading to increased LV afterloading. The VEST™ permits rapid and noninvasive assessment of LV function during arm exercise, avoiding the limitations of other techniques.
Keywords
Nuclear probes;Chest-mounted probes;Ergometry
Report Number
DCIEM-94-01 — Technical Note; Reprint
Date of publication
09 Dec 1993
Number of Pages
11
Reprinted from
Can J Appl Physiol, vol 19, no 4, 1994, p 462-471
DSTKIM No
95-01428
CANDIS No
150659
Format(s):
Hardcopy;Document Image stored on Optical Disk

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