A text-book of pharmacology and therapeutics; or, The action of drugs in health and disease, . arked and dangerous heart survives after the respiration fails in most experiments butthe blood-pressure is very distinctly lower at this time (Fig. 8). Underether the blood-pressure often is slightly lower, but it remains muchhigher than under chloroform when the respiration fails (Fig. 9). Thecause of the fall in blood-pressure under chloroform has been muchdisputed, but is now generally ascribed to the action on the being less poisonous to the heart has a correspondingly sligh
A text-book of pharmacology and therapeutics; or, The action of drugs in health and disease, . arked and dangerous heart survives after the respiration fails in most experiments butthe blood-pressure is very distinctly lower at this time (Fig. 8). Underether the blood-pressure often is slightly lower, but it remains muchhigher than under chloroform when the respiration fails (Fig. 9). Thecause of the fall in blood-pressure under chloroform has been muchdisputed, but is now generally ascribed to the action on the being less poisonous to the heart has a correspondingly slightaction on the blood-pressure. Heart.—The frogs heart under chloroform or ether beats moreslowly and more weakly, and at the same time undergoes a certainamount of dilatation, all owing to the paralyzing eftects of these drugson the cardiac muscle. The eftects on the mammalian heart under chloroform are \cTy 202 SUBSTANCES ACTING AFTER ABSORPTION similar. The slowing is not so marked, however, as the weakness andthe dilatation, so that the rhythm of the pulse does not indicate the FiQ. 8. The respiration (lower tracing) and blood-pressure (upper tracing) in chloroform anaes-thesia in a cat. At C strong vapor was inhaled and a rapid fall in the blood-pressurebegan. The respiration ceased, the heart continuing to beat for some time. (ContrastFig. 9.) extent to which the heart is affected. The auricles are weakened b}smaller quantities than the ventricles, which relax more completely Fig. 9
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttherapeutics, bookyea
