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Sequential external counterpulsation increases cerebral and renal blood flow
R M Applebaum1, R Kasliwal, P A Tunick
1Department of Medicine, New York University Medical Center, NY, USA.
American Heart Journal
|June 1, 1997
Summary
Sequential external counterpulsation (SECP) significantly boosts carotid and renal blood flow. This noninvasive method may aid patients with reduced cerebral and renal perfusion.
Area of Science:
- Cardiovascular Physiology
- Medical Devices
- Hemodynamics
Background:
- Cerebral and renal hypoperfusion can lead to significant organ dysfunction.
- Noninvasive methods to augment blood flow are clinically valuable.
Purpose of the Study:
- To evaluate the impact of sequential external counterpulsation (SECP) on cerebral and renal blood flow dynamics.
Main Methods:
- SECP was applied to 35 patients for carotid and 18 for renal artery studies.
- Cuffs on calves and thighs inflated sequentially during diastole.
- Carotid and renal artery Duplex studies measured flow velocity and integral changes.
Main Results:
- SECP increased mean carotid flow velocity integral by 22% (P=0.001) and renal artery by 19% (P=0.0001).
- A novel diastolic Doppler flow wave emerged, reaching 75% (carotid) and 68% (renal) of systolic wave height.
- Systolic flow velocity increased by 6% (carotid) and 8% (renal) with SECP.
Conclusions:
- SECP effectively enhances both carotid and renal blood flow.
- This noninvasive and safe therapy shows potential for supporting patients with compromised cerebral and renal perfusion.