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Journal ArticleDOI

Cardiovascular Haemodynamics During Fluroxene Anaesthesia in Patients with Aortic Valvular Disease

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TLDR
The cardiovascular stability observed in healthy young normals during fluroxene anaesthesia is preserved in patients with moderate to severe heart failure, making fluroXene the anaesthetic agent best suited for patients with cardiac disease.
Abstract
In nine patients undergoing cardiac surgery for aortic valvular disease, mean arterial blood pressure (MABP), central venous pressure (CVP), cardiac index (CI), stroke volume (SV) and central blood volume index (CBVI) were measured (I) after premedication with diazepam-scopolamine and breathing 100% 02, (II) after induction of anaesthesia with fluroxene-O2, endotracheal intubation facilitated by succinyl-choline with spontaneous respiration, and (III) with controlled respiration after relaxation with gallamine (Relaxan®) 120 mg All measurements were done prior to surgery Fluroxene was found not to affect the MABP, whereas the CVP temporarily rose, but fell to preanaesthetic values in the third measurement The average CI decreased 21% after induction, but the decrease did not prove significant, whereas the SV did fall significantly by a total of 43%, in part secondary to the increased pulse rate caused by gallamine CBVI was unaffected by induction of anaesthesia, but decreased 12% in the third examination It is concluded that the cardiovascular stability observed in healthy young normals during fluroxene anaesthesia (Cullen et al 1970) is preserved in patients with moderate to severe heart failure, making fluroxene the anaesthetic agent best suited for patients with cardiac disease ZUSAMMENFASSUNG Bei 9 Patienten, welche wegen einer Aortenklappenerkrankung operiert werden musten, wurden der arterielle Mitteldruck, der zentralvenose Druck, der “cardiac index”, das Schlagvolumen und der Index des zentralen Blutvolumens nach Pramedikation mit Diazepam-Scopolamin und reiner Sauerstoffatmung, nach Einleitung der Narkose mit Fluroxen-Sauerstoff, endotrachealer Intubation nach Succinylcholin, bei Spontanatmung, aber auch bei kontrollierter Beatmung, nach Relaxierung mit Gallamin 120 mg gemessen Alle Messungen wurden vor Beginn der Operation durchgefuhrt Es wurde gefunden, das Fluroxene den arteriellen Mitteldruck nicht beeinfluste, hingegen aber ein zeitweiliger Anstieg des Zentralvenendruckes, welcher jedoch bei der dritten Messung wieder auf den Ausgangswert abfiel, zu verzeichnen war Der durchschnittliche “cardiac index” fiel nach Narkoseeinleitung um 21%, diese Abnahme war jedoch nicht signifikant Das Schlagvolumen hingegen fiel in signifikanter Weise um 43% ab, teilweise bedingt durch die Erhohung der Pulsfrequenz durch Gallamin Der zentrale Blutvolums-index wurde durch die Narkoseeinleitung nicht beeinflust, fiel aber bei der dritten Messung um 12% Es wird gefolgert, das die kardiovascu-lare Stabilitat, welche bei gesunden jungen Ver-suchspersonen unter Fluroxene-Narkose (Cullen et al, 1960) beobachtet wurde, auch bei Patienten mit mittlerem bis schwerem Herzversagen festzustellen ist Dadurch erscheint Fluroxen ein ide-ales Anaesthetikum fur kardial geschadigte Patienten zu sein

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Citations
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Journal ArticleDOI

Effect of anesthetics on the heart.

TL;DR: The only safe way to administer anesthesia is by careful titration of the dose against the best measurement of cardiac function which is available, which would mean measuring at least direct arterial pressure, central venous pressure, and a continuous electrocardiogram.
Journal ArticleDOI

Cardiovascular Haemodynamics During Fluroxene Anaesthesia in Patients with Muscular Subaortic Stenosis

TL;DR: It is concluded that extreme caution should be shown in the administration of positive inotropic agents, whereas beta receptor blocking agents could dramatically improve the cardiac function in these patients.
References
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Journal ArticleDOI

The Hemodynamic and Respiratory Effects of Diazepam (Valium

TL;DR: Diazepam, 5–10 rag, was given intravenously to treat anxiety occurring during cardiac catheterization in 15 patients and anxiety was effectively relieved in 11 patients.
Journal ArticleDOI

A comparative study of the effects of five general anesthetics on myocardial contractility. I. Isometric conditions.

TL;DR: Isolated cat papillary muscles driven at a rate of 12 beats/min at 37.5 C were exposed tojeoncen-trations of cyclopropane, diethyl ether, Ethrane, halothanc, and methoxyflurane similar to those required to produce general anesthesia m vivo, implying a common mode of action on the con-tractile process.
Journal ArticleDOI

A comparison of the cardiovascular effects of halothane, fluroxene, ether and cyclopropane in man: a resumé.

TL;DR: After four to five hours of anesthesia, mean right atrial pressure decreased from the values at one hour to or toward control values, while cardiac output, heart rate, stroke volume, left ventricular work and oxygen consumption tended to increase.