Abstract
Introduction: The effectiveness of premedication of patients with arterial hypertension and severe ventricular rhythm disturbances against the background of Amiodarone-associated thyrotoxicosis, high anxiety and cyclothymiae disorders should be based on the pharmacological positions of the need to reduce the risk of dangerous adverse cardiovascular reactions.
 Materials and methods: During the research, a clinical group of 114 patients with arterial hypertension, severe ventricular arrhythmias and Amiodarone-associated type I thyrotoxicosis was formed: four subgroups were identified. In Subgroup 1 (n=22), no premedication was given. In Subgroup 2 (n=32), premedication was given with Diazepam and magnesium sulfate in a prolonged mode. In Subgroup 3 (n=30), the patients received Diazepam the day before surgery. In Subgroup 4 (n=30), premedication was given with Midazolam. A dynamic assessment of the severity of anxiety, depression, sedation and daily monitoring of blood pressure and ECG were carried out.
 Results and discussion: After surgery, in Subgroup 1, the level of anxiety and depression increased. In all other Subgroups, regardless of the type of premedication, the use of benzodiazepines was accompanied by a decrease in the level of anxiety after surgery. A decrease in pressure load and an increase in the stability of the parameters of systemic hemodynamics were registered in Subgroup 2 of patients, whereas in Subgroup 4 of patients, the pressure load increased while limiting the differences in blood pressure values during the day. After surgery, in Subgroup 2, cardiac rhythm disturbances were less common; in Subgroup 3, the structure of rhythmogenesis disturbances in the heart almost did not change, and in Subgroup 4, there was an unfavorable trend of an increase in the frequency of supraventricular, single and group ventricular extrasystoles.
 Conclusion: The prolonged premedication with long-acting benzodiazepines and magnesium preparations in patients with arterial hypertension, ventricular rhythm disturbances against the background of Amiodarone-associated thyrotoxicosis reduces the level of anxiety, as well as the risk of developing cardiovascular complications and instability of systemic hemodynamics.
Highlights
The effectiveness of premedication of patients with arterial hypertension and severe ventricular rhythm disturbances against the background of Amiodarone-associated thyrotoxicosis, high anxiety and cyclothymiae disorders should be based on the pharmacological positions of the need to reduce the risk of dangerous adverse cardiovascular reactions
The prolonged premedication with long-acting benzodiazepines and magnesium preparations in patients with arterial hypertension, ventricular rhythm disturbances against the background of Amiodarone-associated thyrotoxicosis reduces the level of anxiety, as well as the risk of developing cardiovascular complications and instability of systemic hemodynamics
The degree of research to study the effectiveness of prolonged premedication of patients with arterial hypertension, fatal cardiac rhythm disturbances and Amiodarone-associated thyrotoxicosis for the correction of high anxiety and cyclothymia disorders and reduction of cardiovascular complications in the post-surgery period is low
Summary
The effectiveness of premedication of patients with arterial hypertension and severe ventricular rhythm disturbances against the background of Amiodarone-associated thyrotoxicosis, high anxiety and cyclothymiae disorders should be based on the pharmacological positions of the need to reduce the risk of dangerous adverse cardiovascular reactions. When urgent surgery is indicated, Amiodarone cannot be discontinued even with a change in the thyroid status due to the need to prevent ventricular fibrillation in fatal ventricular rhythm disturbances (Bogazzi et al 2010; Laina et al 2016) In such a difficult clinical situation, a high level of anxiety and cyclothymia disorders in connection with the upcoming neurosurgery, lability of the patient’s psyche, variability of systemic hemodynamics, cardiac effects of excess thyroid hormones against the background of the use of Amiodarone are of serious danger (Negovsky et al 2008; Claro et al 2015; Vorobiev and Mitrokhin 2018). The solution to this clinical issue is seen in the competent pharmacological premedication practices (Jawaid et al 2007; Jafar and Khan 2009; Kitiashvili et al 2018)
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