(1) Professor of Anesthesiology, Albany Medical College, Albany, NY, USA KeywordsRhythmic generation of pressureConstriction of conotruncusVitelline artery ligationSpongy myocardiumEmbryo arterial pressure We have seen that while traversing the heart…
(1) Professor of Anesthesiology, Albany Medical College, Albany, NY, USA KeywordsAortic occlusionCardiac output during aortic occlusionThe role of venous reservoir and of peripheral circulationHemodynamics of aortic occlusionCardiac effects of…
(1) Professor of Anesthesiology, Albany Medical College, Albany, NY, USA The great tragedy of science—the slaying of a beautiful hypothesis by an ugly fact. Thomas Huxley (1870) It is…
(1) Professor of Anesthesiology, Albany Medical College, Albany, NY, USA KeywordsPeristaltic pumpValveless embryo heartCardiac jellyLiebau pump principleDynamic suction pumpContraction waveBlood flow reversalEjection fraction Rhythmical contractions of the embryonic heart…
(1) Professor of Anesthesiology, Albany Medical College, Albany, NY, USA KeywordsEmbryo heartFlow perturbationMicrospheresVitelline vein ligationCardiac morphogenesisPeripheral circulation On account of relative ease of accessibility, the early embryo circulation is…
(1) Professor of Anesthesiology, Albany Medical College, Albany, NY, USA KeywordsEmbryo heart rate perturbationsBlood’s motive energyHeart pacingSinus node cooling and heatingIntrinsic heart rateMatching of heart rate and output To…
(1) Professor of Anesthesiology, Albany Medical College, Albany, NY, USA KeywordsPressure–volume loopsEnd-systolic pressure–volume relationshipExternal myocardial workInternal myocardial workPreloadAfterloadVentricular oxygen consumptionOptimal working volume The complex equilibrium existing between the pressure…
(1) Professor of Anesthesiology, Albany Medical College, Albany, NY, USA We see, then, that there may be a circulation without a heart, or contractile propulsive power; and as to…
Fig. 5.1 A cartoon of the histology of the initial plaque of aortic stenosis is demonstrated. There is a remarkable similarity to the atherosclerotic plaque of coronary artery disease with…
Grade Definition Valve anatomy Valve hemodynamicsa Hemodynamic consequences Symptoms A At risk of MR • Mild mitral valve prolapse with normal coaptation • Mild valve thickening and leaflet restriction • No MR jet…
