A 5-year-old boy has his blood drawn for platelet aggregation studies. Ristocetin aggregation (RIPA) comes back abnormal with all other agonists displaying normal aggregation. VWF antigen is within normal limits
What is the most likely reason for this discrepancy?
a. The VWF antigen test was performed incorrectly and should be repeated.
b. The patient might be suffering from a qualitative platelet defect disorder.
c. The RIPA exam was performed incorrectly and should be repeated.
d. Multimer analysis should be performed to confirm these findings.
Correct Answer: B
You might also like to view...
What category of risk best reflects these words "Hemoglobin 13.5; WBC: 18,000 . An abdominal CT scan was reviewed with radiologist; scan showed a small amount of free fluid in ULQ with grade 3 laceration of spleen
There is evidence of significant amount of stool within sigmoid and rectum.".? a. Documentation of the physical examination. b. Presenting problem c. Diagnostic procedures ordered d. Management option selected
Gastroesophageal reflux disease (GERD) occurs when the muscle connecting the esophagus to the __________ does NOT close tightly
a. stomach b. liver c. gallbladder d. pancreas
Temporary variation in pulmonary artery pressure readings due to movement of the hemodynamic monitoring line is an example of what type of variability?
a. Artifact b. Factitious event c. Physiologic variation d. Instrument drift
Which position is not normally used in a physician's office, except in cases of shock or hypotension?
A. Dorsal recumbent B. Sims C. Lithotomy D. Trendelenburg