Document Detail

An annular compliance chamber for the Pennsylvania State University electric total artificial heart.
MedLine Citation:
PMID:  8268569     Owner:  NLM     Status:  MEDLINE    
To eliminate the need for a separate parapleural compliance chamber, we are currently investigating the feasibility of an annular compliance chamber. This chamber wraps around the energy converter and fits between the blood pumps of the Pennsylvania State University electric total artificial heart. For the 100 cc total artificial heart, the compliance chamber volume is 76 ml and the tissue contacting surface area is approximately 85 cm2. The chamber is made of Dacron velour covered segmented polyether polyurethane urea. The annular compliance chamber was evaluated in vitro by comparing pump balance control performance against that obtained with an open vent. In the CVP range of 5-12 mmHg, LAP was maintained within 1 mmHg of the values obtained with a vent. Studies continue to determine the range of volumes over which the chamber is effective, differences in rates of diffusion, and performance during changes in barometric pressure.
J D Reibson; G Rosenberg; A J Snyder; T J Cleary; J H Donachy; G Felder; W S Pierce
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  ASAIO journal (American Society for Artificial Internal Organs : 1992)     Volume:  39     ISSN:  1058-2916     ISO Abbreviation:  ASAIO J.     Publication Date:    1993 Jul-Sep
Date Detail:
Created Date:  1994-01-31     Completed Date:  1994-01-31     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  9204109     Medline TA:  ASAIO J     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  M415-8     Citation Subset:  IM    
Department of Surgery, M. S. Hershey Medical Center, Pennsylvania State University, Hershey 17033.
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MeSH Terms
Atmospheric Pressure
Blood Pressure / physiology
Cardiac Output / physiology
Electric Power Supplies
Equipment Design
Heart, Artificial*
Hemodynamics / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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