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[Observation on red cell deformability in patients with cor pulmonale]
1Division of Respiratory Medicine, 304 Hospital, PLA, Beijing.
Summary
Red cell deformability index (RCDI) decreases in cor pulmonale patients with acute respiratory failure, particularly with respiratory encephalopathy. Hypoxemia and acidosis are key factors linked to reduced RCDI in these patients.
Area of Science:
- Cardiology
- Pulmonology
- Hematology
Background:
- Cor pulmonale, a condition of right heart enlargement due to lung disease, can affect red blood cell properties.
- Red blood cell deformability is crucial for microcirculation and oxygen transport.
Purpose of the Study:
- To investigate the red cell deformability index (RCDI) in patients with cor pulmonale.
- To explore the relationship between RCDI, blood gas values, and plasma osmolarity in cor pulmonale.
Main Methods:
- Measured RCDI in 29 cor pulmonale patients and 31 healthy controls.
- Simultaneously assessed blood gas parameters (PaO2, pH) and plasma osmolarity.
Main Results:
- RCDI was significantly lower in patients with acute respiratory and cardiac failure, especially with respiratory encephalopathy, compared to stable patients and controls.
- No significant difference in RCDI was observed between stable cor pulmonale patients and controls.
- PaO2 and pH (7.31-7.39) showed a positive correlation with RCDI.
- Plasma osmolarity did not significantly affect RCDI.
Conclusions:
- Reduced RCDI in acute cor pulmonale may contribute to increased pulmonary arterial pressure.
- Hypoxemia and acidosis are implicated as significant factors in the decreased red blood cell deformability observed in cor pulmonale.