COMPARATIVE STUDY
EVALUATION STUDIES
JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Add like
Add dislike
Add to saved papers

Red cell mass, spleen size and plasma erythropoietin in polycythaemia vera and apparent polycythaemia.

Most frequently, an elevated packed cell volume (PCV) value arouses the suspicion of a polycythaemic state. The aim of the present work was to assess a few readily available variables which could help the clinician to differentiate between polycythaemia vera (PV) and apparent polycythaemia (AP). During a 5-year period, 31 consecutive newly diagnosed patients with PV were identified, and during a 4-year period 38 consecutive subjects were considered to be afflicted with AP. In each subject: (i) the red cell mass (RCM) and plasma volume were measured, (ii) the spleen size was assessed using gamma-camera imaging, and (iii) the plasma erythropoietin (EPO) concentration was determined. The diagnosis of PV was based upon recently proposed criteria. By definition, all PV patients had absolute erythrocytosis, i.e. the RCM was greater than 25% above the mean normal predicted value for the individual. There was no statistical difference between the plasma volumes for PV and AP patients. However, the mean measured/predicted plasma volume for subjects with AP was significantly lower than the mean for PV. The means for spleen scan areas (posterior and left lateral projections) for AP patients were identical to the mean reference values for our laboratory. As compared to AP, in PV the spleen scan areas were significantly increased, and the lateral spleen scan area was significantly larger than the posterior area. It was also shown that, in contrast to AP, both spleen scan areas were significantly larger in male than in female PV patients. All PV patients had plasma EPO concentrations below the lower reference limit, and in 68% of the patients undetectable EPO concentrations were present. Most AP patients (84%) had EPO values within the reference range; 8% had slightly subnormal, but not undetectable, plasma EPO levels.

Full text links

We have located links that may give you full text access.
Can't access the paper?
Try logging in through your university/institutional subscription. For a smoother one-click institutional access experience, please use our mobile app.

For the best experience, use the Read mobile app

Mobile app image

Get seemless 1-tap access through your institution/university

For the best experience, use the Read mobile app

All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.

By using this service, you agree to our terms of use and privacy policy.

Your Privacy Choices Toggle icon

You can now claim free CME credits for this literature searchClaim now

Get seemless 1-tap access through your institution/university

For the best experience, use the Read mobile app