LD-PACE II: a new cardiomyostimulator for cardiac bioassist
| Autor: | Orestas Fiandra, Michelle A. Maternowski, David Krum, Guennady Tchekanov, Pedro Arzuaga, Robert L. Hammond, Vladimir Melamed, John Hare, Fernando Brum, Valeri S. Chekanov, Ray C.-J. Chiu, Larry W. Stephenson, Juan C. Chachques, Julio Arzuaga |
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| Rok vydání: | 2001 |
| Předmět: |
medicine.medical_specialty
Pacemaker Artificial medicine.medical_treatment Biomedical Engineering Biophysics Bioengineering Prosthesis Design Biomaterials Atrophy Internal medicine Medicine Humans Cardiac assist Cardiomyoplasty Rest (music) business.industry Skeletal muscle Heart General Medicine medicine.disease Myocardial Contraction Experimental research Surgery Regimen Rest period medicine.anatomical_structure Cardiology Heart-Assist Devices business |
| Zdroj: | ASAIO journal (American Society for Artificial Internal Organs : 1992). 47(1) |
| ISSN: | 1058-2916 |
| Popis: | The LD-PACE II was designed for use in cardiomyoplasty, aortomyoplasty, and skeletal muscle ventricles. All parameters specified as programmable can be changed in a noninvasive manner (using a programming interface wand connected to a computer using the Windows 95/98 environment). Two new functions may be very useful clinically, based on experimental research. 1. Work-rest regimen. The LD-PACE II is able to deliver alternating periods of muscle contractions and rest. Work and rest periods may be programmed independently between 1 and 120 minutes in increments of 1 minute. The work-rest regimen may be useful clinically if muscle contractions are needed for cardiac assist postoperatively. 2. Night/day regimen. This feature allows for a change in the ratio of muscle contractions according to a patient's activity level. During the day the cardiosynchronization ratio may be set from 1:1 to 1:4, and during the night it may be set for 1:8 to 1:16. This allows the muscle to have a long rest period, prevents overuse, and prolongs battery life. These two new features make this cardiomyostimulator very attractive for cardiomyoplasty in particular. The addition of the work-rest and night-day regimens allow the muscle to rest for periods during the day to prevent overuse, subsequent damage, and potential atrophy. |
| Databáze: | OpenAIRE |
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