]> 2026-07-31T12:14:35+00:00 WBR0964 0 en Secondary polycythemia ''' Correct ''' : Secondary polycythemia is caused by either natural or artificial increases in the production of erythropoietin that result in an increased production of erythrocytes. This patient has secondary polycythemia due to smoking and lung diseases that result in hypoxia induced erythropoietin production. Polycythemia vera Drug induced polycythemia Relative polycythemia ''' Incorrect ''' : An isolated decrease in plasma volume can elevate the hemoglobin, hematocrit, and RBC count. The state of chronically reduced plasma volume with elevated hemoglobin or hematocrit has been called Gaisbock's disease, spurious polycythemia, stress erythrocytosis, apparent polycythemia, and pseudopolycythemia, although many may be examples of smokers' polycythemia. Chronic myeloid leukemia Emergency Room A 50 year old woman comes to the emergency department with complaints of shortness of breath. She has these symptoms for the past one day. Her past history is significant for chronic bronchitis and COPD. She has smoked one pack of cigarette for the past 10 years. She denies alcohol use and use of recreational drugs. She attained menopause at the age of 48 and not on any medications. Her vitals are temperature: 36.7 C, blood pressure: 140/80 mmHg, pulse: 80/min and respirations: 15/min. The patients pulse oximetry shows 96 % on 4-litres of oxygen. Respiratory examination reveals coarse wheeze all over the chest. All other system examinations are normal. Her laboratory values comes as : Hb : 23 g/dl RBC’s : 6.5 million/cmm WBC’s : 6000/cmm Platelet’s : 300,000/cmm Neutrophils : 58% Eosinophils : 2% Lymphocytes : 33% Monocytes : 7% PT : 13 sec (N 11-15 sec) INR : 1.03 What is the most likely diagnosis in this patient ? A Hematology 2020-10-28T02:13:05Z 2459150.592419 WBR0964