Cells with a slit (stomatocytes) instead of a round central pallor can be found in all of the following except:
a. Liver disease of alcoholism
b. Rhnull disease
c. Hereditary elliptocytosis
d. Blood films with a drying artifact
ANS: C
The characteristic red cell morphology in hereditary elliptocytosis is elliptic. All other situations listed can show the presence of stomatocytes.
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A first-degree heart block has a PR interval greater than 0.20 seconds because:
A) depolarization of the atria occurs at a slightly slower rate than one would expect. B) each impulse that reaches the AV node is delayed slightly longer than expected. C) impulses generated by the SA node traverse the AV node at an accelerated rate. D) the primary pacemaker is not the SA node, but rather an ectopic atrial pacemaker.
This program was developed by The Joint Commission to help accredited health care institutions focus upon specific patient safety concerns.?
A) National Quality Forum (NQF) B) ?Quality Improvement Organization (QIO) C) National Patient Safety Goals (NPSG) D) ?Patient Safety Organization (PSO)