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  • Title: Effect of lidocaine with adrenaline and landiolol on hemodynamics in spontaneously hypertensive rats.
    Author: Oshikiri T, Iguchi A, Sunada K, Fujii K, Sano K.
    Journal: J Oral Sci; 2020; 62(3):314-317. PubMed ID: 32581178.
    Abstract:
    Administration of local anesthetics with adrenaline can cause tachycardia and hypertension. This study assessed whether combined administration of landiolol with adrenaline and lidocaine would induce local anesthesia without causing hemodynamic changes. Normal saline (NS), lidocaine with adrenaline (LA), and lidocaine with adrenaline and landiolol (LLA) were injected into Wistar Kyoto (WKY/Izm) or spontaneously hypertensive (SHR/Izm) rats, followed by measurement of the pulse rate (PR), and the systolic, diastolic and mean blood pressures (SBP, DBP and MBP). In the LLA group, the increase in PR was significantly suppressed in both SHR/Izm and WKY/Izm rats relative to those in the LA group. Although SBP was significantly reduced in WKY/Izm rats given LLA, relative to those given NS or LA, it was elevated in SHR/Izm rats given LLA. Landiolol-induced changes in PR may be due to blockade of adrenaline-induced β1 receptor stimulation, which suppresses cardiac hyperactivity, whereas the early surge of blood pressure in SHR/Izm rats given LLA may be due to the dominant alpha-adrenergic effects of β1 receptor inhibition. The anti-adrenergic effects of LLA were safe and effective in WKY/Izm rats, although the unexpected early hypertensive surge in SHR/Izm rats indicates the need for caution.
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