Transmural blood flow of multi-layered latissimus dorsi skeletal muscle ventricles during circulatory assistance.
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Adenosine Triphosphatases↗
Biomedical subjects
R Hammond
Publications and source records attributed to R Hammond.
LD-PACE II: a new cardiomyostimulator for cardiac bioassist.
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.
Cardiomyoplasty↗
Outpatient requests, initial sessions and attrition.
Treatment attrition in a psychiatric outpatient department was evaluated. Of eighty-two consecutive new patients, fifty-three (65%) showed up for a second appointment while twenty-nine (35%) failed to return. None of the demographic variables or specific categories of patient requests differentiated continuers from non-continuers; nor was attrition significantly influenced by feeling one's problems were understood, symptomatic improvement or receiving the kind of intervention originally desired. Treatment continuers were more likely to have been referred by other hospital clinics or psychiatric care facilities, and more often had previous outpatient contact, but these differences did not reach statistical significance. The only outcome measures significantly related to continuation were: perceiving one's feelings understood in the initial session, feeling satisfied with the interview, and planning to return for the next appointment. Theoretical and practical implications of these findings are discussed.
Adolescent↗