Higher Level at Admission and Subsequent Decline in Hemoglobin in Patients With Acute Pulmonary Edema
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Background: Acute pulmonary edema (APE) often occurs without remarkable fluid retention, and the benefits of diuretics are unclear in such patients. Although aggressive diuresis induces an increase in intravascular substances including hemoglobin (Hb), acute changes in Hb level remain to be investigated. Methods and Results: We analyzed 237 consecutive acute heart failure patients (74±12 years; 60.8% men) without shock, hemodialysis, bleeding, or urgent coronary angiography. APE was defined as acute onset of dyspnea within the preceding 6h and radiographic alveolar edema requiring immediate airway intervention. At admission, Hb level was higher in APE (n=29) than non-APE patients (n=208; 13.4±2.2 vs 12.2±2.1g/dl, P<0.01). Although diuretic therapy was performed in 232 patients (97.9%), hemoconcentration (ie, any increase in Hb) was observed in only 64 patients (27.0%) at 24h after admission. Conversely, Hb level decreased in both groups and the difference was larger in APE patients (−1.8±1.1 in APE and −0.5±1.0g/dl in non-APE patients, P<0.001). APE was significantly related to a greater decrease in Hb after adjusting for baseline Hb (β=−1.08g/dl, SE=0.20, P<0.001, ANCOVA). Conclusions: APE patients had higher Hb level at admission and a more remarkable decline in 24h than did those without APE. Acute change in Hb might be caused by factors other than diuresis-induced hemoconcentration. The present findings may be useful in the selection of diuretic strategies.
- 一般社団法人 日本循環器学会の論文
一般社団法人 日本循環器学会 | 論文
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