Index 



Acacia 



as plasma expander, 64 



fate of, in body, 65 

 Acetylcholine 



atrio\'entricular conductance and, 298 



blood pressure effect in ventricular 

 septal defect, 457 



cardiac action potential, contraction 

 and, 385 



in the newborn, 439 



infusion in pulmonary hypertension, 

 672 



K permeability and, 386 



pulmonary artery pressure and, 465 



pulmonary vascular resistance and, 



459, 465 

 Acetyl -Co A 



in cardiac muscle, 210 

 Acetylene 



for blood flow measurement, 572 

 Acetylstrophanthidin : see Cardiac glyco- 

 sides 

 Aconitase 



in heart, 228 



in skeletal muscle, 228 

 Aconitine 



extrasystoles and, 394-395 



paroxysmal tachycardia and, 395 

 Actin 



in cardiac muscle, 216 



in muscle contraction, 2 1 9 



pathological changes in, 225 

 Action potential 



barium and, 1 72 



calcium and, 166 



cardiac muscle 

 hypoxia and, 31 7 



ionic theory, 262 

 superimposability of, 263 



in Purkinje cells, 261 



membrane "clamp" potential and, 161 



propagated, calculated, 258 



quinidine, i 77, 179 



stimulation frequence, 178 



real and computed, 256 



rubidium and, 165 



sodium and, 160, 161 



potassium movements and, 247 



strontium and, 1 72 



theoretical propagation, 257 



transmembrane, 275 



veratrum alkaloids and, 181 

 Active transport 



definition, 621 



energy requirements, 244 



Na"''-K''" exchange pump, 244 



of ions, 243 

 Actomyosin 



digitalis and, 183 



in cardiac failure, 228 



in cardiac muscle, 2 1 7 



K binding, digitalis and, 183 



monovalent cations and, 162 



physical state, cations and, 162 

 Adenosine triphosphate 



digitalis and, 182 



formula, 215 



in muscle contraction, 219 



production in heart muscle, 207 

 Adrenal glands 



blood flow rate and, 642 



removal, blood volume and, 54 

 Adrenergic agents 



ventricular function curves and, 492 



Age 



aorta \olume-pressure curves and, 93, 



557 



blood volume and, 53 



elasticity of arteries and, 94, 557 



electrocardiogram and, 386 



fall in arterial wall pressure and, 104 



pulmonary blood flow and, 453 



in ventricular septal defect, 454, 458 

 Albumin 



as plasma expander, 64 



bovine, antigenic properties, 69 

 Aldolase 



in heart, 228 



in skeletal muscle, 228 

 Aldosterone 



blood volume and, 54 

 Amino acid oxidation 



in cardiac muscle, 2 1 1 

 Amyl nitrate 



in mitral regurgitation, 450 

 Amyloidosis 



plasma labeling and, 39 

 Anemia 



cardiac disease and, 223 

 Anesthesia 



cardiovascular fluctuations and, 539 



heart size and, 541 

 Angiocardiography 



cardiac disease and, 656 



congenital cardiac defects and, 437 



left atrial volume curves from, 656 



valvular stenosis and, 656 

 Anoxia 



cardiac glycogen and, 209 



electrocardiogram and, 387 

 theories, 388 



extrasystoles and, 394 



737 



