Key result
Pre-treatment with a bolus dose of glucagon before anaesthesia induction with enibomal did not significantly alter the changes in PEP/LVET-ratio compared to controls (p>0.05).
Why the study?
Does pre-treatment with a bolus dose of glucagon prevent depression of cardiac function during induction of anaesthesia with enibomal in surgical patients?
Does pre-treatment with a bolus dose of glucagon prevent depression of cardiac function during induction of anaesthesia with enibomal in surgical patients?
Absolute Event Rate: 0.06% vs 0.09%
p-value: p=>0.05
Pre-treatment with a bolus dose of glucagon did not significantly prevent the depression of cardiac function caused by induction of anaesthesia with the barbiturate enibomal.
Glucagon pre-treatment did not mitigate enibomal-induced cardiac depression in this cohort; leaves open whether alternative strategies warrant prospective testing.
The systolic time intervals and calculated parameters of PEP/LVET (pre‐injection period/left ventricular ejection time‐ratio) and 1/PEP2before and after induction of anaesthesia with the barbiturate enibomal (Narcodorm®) were studied non‐invasively in eight surgical patients after pre‐treatment with a bolus dose of glucagon. The mean difference between the PEP/LVET‐ratio before and after induction was 0.06, and the mean difference between 1/PEP2before and after induction was ‐8. The corresponding values in the control group consisting of 12 patients were 0.09 and ‐28, respectively, suggesting a somewhat greater depression of cardiac function in this group. However, no statistically significant difference at the 5% level was found between changes in the glucagon group and controls. The influence of barbiturates and glucagon on cardiac function is discussed. ZUSAMMENFASSUNG Bei 8 chirurgischen Patienten wurden nach Vorbehandlung niit einer Bolus‐Dosis von GIukagon die Systolen‐Zeitintervalle und die berechneten Parameter PEP/LVET und l/PEP2vor und nach Narkoseeinleitung mit dem Barbiturat Enibomal (Narcodorma™) mittels einer nicht‐invasiven Technik untersucht. Der mittlere Unterschied zwischen den PEP/LVET‐Verhältnissen vor und nach Narkosecinleitung war 0,06, die mittlere Differenz zwischen den l/PEP2‐Werten vor und nach der Einleitung ‐8. Die korrespondierenden Werte in der Kontrollgruppe waren 0,09 bzw. ‐ 28, was auf eine etwas stärkere Depression der Herzfunktion in dieser Gruppe hinweist. Einstatistisch gesicherter Unterschied von p< 0,05 zwischen den Veränderungen in der Glukagongruppe und denen der Kontrollgruppe wurde allerdings nicht gefunden. Der Einfluß von Barbituraten und von Glukagon auf die Herzfunktion wird diskutiert.
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Ibler et al. (1975) studied Surgical patients undergoing anaesthesia (n=20). Glucagon vs. Control group was evaluated on Mean difference in PEP/LVET-ratio before and after induction (p=>0.05). Pre-treatment with a bolus dose of glucagon before anaesthesia induction with enibomal did not significantly alter the changes in PEP/LVET-ratio compared to controls (p>0.05).
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