CHEST X-RAY AND FLUOROSCOPY
A
chest x-ray usually is obtained to determine the size, contour, and position of
the heart. It reveals cardiac and pericardial calci-fications and demonstrates
physiologic alterations in the pul-monary circulation. It does not help
diagnose acute MI but can help diagnose some complications (eg, HF). Correct
placement of cardiac catheters, such as pacemakers and pulmonary artery
catheters, is also confirmed by chest x-ray.
Fluoroscopy
allows visualization of the heart on an x-ray screen. It shows cardiac and
vascular pulsations and unusual car-diac contours. Fluoroscopy is useful for
positioning intravenous pacing electrodes and for guiding catheter insertion
during car-diac catheterization.
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