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The effect of pentoxifylline on central and peripheral haemodynamics--an experimental clinical study
Insights
Pentoxifylline (i.v.) briefly increased cardiac output and reduced peripheral resistance in patients with normal heart function. However, it did not improve cardiac output in those with myocardial insufficiency.
Area of Science:
- Cardiovascular Pharmacology
- Hemodynamics
- Internal Medicine
Background:
- Pentoxifylline is a hemorheologic agent used to improve blood flow.
- Its effects on cardiac function, particularly in patients with compromised myocardial function, require further elucidation.
- Peripheral-arterial occlusive disorders often coexist with cardiovascular comorbidities.
Purpose of the Study:
- To investigate the acute hemodynamic effects of intravenous pentoxifylline.
- To assess cardiac output, stroke volume, heart rate, and pressures in patients with normal versus insufficient myocardial function.
- To evaluate pentoxifylline's impact on total peripheral resistance.
Main Methods:
- A study involving 8 patients with peripheral-arterial occlusive disorders.
- Intravenous injection of 100 mg pentoxifylline.
- Hemodynamic parameters including cardiac output, stroke volume, heart rate, and various pressures were monitored.
Main Results:
- In patients with normal myocardial function, a transient, significant increase in cardiac output (+9.6%) and decrease in total peripheral resistance (-7.6%) were observed.
- No significant increase in cardiac output was detected in patients with myocardial insufficiency.
- No other monitored hemodynamic parameters showed statistically significant changes.
Conclusions:
- Intravenous pentoxifylline demonstrates a modest, acute beneficial effect on cardiac output and peripheral resistance in individuals with preserved myocardial function.
- These positive hemodynamic effects were not observed in patients with impaired myocardial function, suggesting limited utility in this population.
- Further research is warranted to explore the clinical implications and potential therapeutic roles of pentoxifylline in cardiovascular conditions.
Abstract:
The effect of an i.v. injection of 100 mg pentoxifylline on cardiac output, stroke volume, heart rate, atrial pressure, pulmonary arterial, pulmonary capillary and aortic pressure in normal myocardial function and in myocardial insufficiency was investigated in 8 patients with peripheral-arterial occlusive disorders. In normal myocardial function there was a brief, statistically significant increase in cardiac output of +9.6% and a simultaneous reduction in total peripheral resistance of -7.6%. No increase in cardiac output was recorded in patients with myocardial insufficiency. None of the other parameters monitored showed any statistically significant change.