Matches in SemOpenAlex for { <https://semopenalex.org/work/W194684857> ?p ?o ?g. }
Showing items 1 to 73 of
73
with 100 items per page.
- W194684857 endingPage "32" @default.
- W194684857 startingPage "325" @default.
- W194684857 abstract "The left ventricular studies by Doppler echocardiography were performed in 50 patients with a Björk-Shiley (B-S) mitral valve and 50 patients after implantation of a St. Jude Medical (SJM) mitral valve; the effect of valve replacement on the hemodynamic performance at rest and during bicycle exercise was determined from serial echocardiographic data. Twenty-eight patients (56%) of the B-S group and 42 patients (84%) of the SJM group showed a good response to the exercise. There was no significant difference in the effective orifice area at rest among each sizes of the B-S valve. In the SJM valve, on the contrary, the effective valve orifice area increases in parallel to the size of the SJM valve. There was a clear relation between the valve size and pressure gradient. The pressure gradient directly depends on the valve size and the effective orifice area in the SJM valve. High pressure gradient group in both prostheses had a tendency to take negative values of percent increase in stroke volume. Further, there were no cases showing positive values of percent increase in end-diastolic volume among the patients whose pressure gradients were assumed to be more than 10 mmHg at rest. It is suggested that impairment of inflow caused by the artificial valve, prosthetic valve stenosis, is possibly a significant factor causing left ventricular dysfunction, notably a decrease in stroke volume during exercise.(ABSTRACT TRUNCATED AT 250 WORDS)" @default.
- W194684857 created "2016-06-24" @default.
- W194684857 creator A5034176652 @default.
- W194684857 creator A5041944116 @default.
- W194684857 creator A5045367658 @default.
- W194684857 creator A5047695595 @default.
- W194684857 creator A5049639390 @default.
- W194684857 creator A5091304960 @default.
- W194684857 date "1991-10-01" @default.
- W194684857 modified "2023-09-23" @default.
- W194684857 title "Doppler echocardiographic evaluation of Björk-Shiley and St. Jude Medical prostheses in the mitral position." @default.
- W194684857 doi "https://doi.org/10.18926/amo/32192" @default.
- W194684857 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/1755338" @default.
- W194684857 hasPublicationYear "1991" @default.
- W194684857 type Work @default.
- W194684857 sameAs 194684857 @default.
- W194684857 citedByCount "1" @default.
- W194684857 crossrefType "journal-article" @default.
- W194684857 hasAuthorship W194684857A5034176652 @default.
- W194684857 hasAuthorship W194684857A5041944116 @default.
- W194684857 hasAuthorship W194684857A5045367658 @default.
- W194684857 hasAuthorship W194684857A5047695595 @default.
- W194684857 hasAuthorship W194684857A5049639390 @default.
- W194684857 hasAuthorship W194684857A5091304960 @default.
- W194684857 hasConcept C105702510 @default.
- W194684857 hasConcept C126322002 @default.
- W194684857 hasConcept C164705383 @default.
- W194684857 hasConcept C178853913 @default.
- W194684857 hasConcept C194242075 @default.
- W194684857 hasConcept C2777543888 @default.
- W194684857 hasConcept C2777953023 @default.
- W194684857 hasConcept C2780007028 @default.
- W194684857 hasConcept C2780346441 @default.
- W194684857 hasConcept C57900726 @default.
- W194684857 hasConcept C71924100 @default.
- W194684857 hasConcept C77265313 @default.
- W194684857 hasConcept C80461066 @default.
- W194684857 hasConcept C84393581 @default.
- W194684857 hasConceptScore W194684857C105702510 @default.
- W194684857 hasConceptScore W194684857C126322002 @default.
- W194684857 hasConceptScore W194684857C164705383 @default.
- W194684857 hasConceptScore W194684857C178853913 @default.
- W194684857 hasConceptScore W194684857C194242075 @default.
- W194684857 hasConceptScore W194684857C2777543888 @default.
- W194684857 hasConceptScore W194684857C2777953023 @default.
- W194684857 hasConceptScore W194684857C2780007028 @default.
- W194684857 hasConceptScore W194684857C2780346441 @default.
- W194684857 hasConceptScore W194684857C57900726 @default.
- W194684857 hasConceptScore W194684857C71924100 @default.
- W194684857 hasConceptScore W194684857C77265313 @default.
- W194684857 hasConceptScore W194684857C80461066 @default.
- W194684857 hasConceptScore W194684857C84393581 @default.
- W194684857 hasIssue "5" @default.
- W194684857 hasLocation W1946848571 @default.
- W194684857 hasOpenAccess W194684857 @default.
- W194684857 hasPrimaryLocation W1946848571 @default.
- W194684857 hasRelatedWork W1484975058 @default.
- W194684857 hasRelatedWork W1972219415 @default.
- W194684857 hasRelatedWork W2004599354 @default.
- W194684857 hasRelatedWork W2014553276 @default.
- W194684857 hasRelatedWork W2017321468 @default.
- W194684857 hasRelatedWork W2089788482 @default.
- W194684857 hasRelatedWork W2136173875 @default.
- W194684857 hasRelatedWork W2208054081 @default.
- W194684857 hasRelatedWork W2413898168 @default.
- W194684857 hasRelatedWork W3110096387 @default.
- W194684857 hasVolume "45" @default.
- W194684857 isParatext "false" @default.
- W194684857 isRetracted "false" @default.
- W194684857 magId "194684857" @default.
- W194684857 workType "article" @default.