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Milrinone, sold under the brand name Primacor, is a pulmonary vasodilator [2] used in patients who have heart failure. It is a phosphodiesterase 3 inhibitor that works to increase the heart's contractility and decrease pulmonary vascular resistance.
It is important to note that certain medications, such as Milrinone and Digoxin, possess overlapping classifications due to their ability to engage multiple mechanisms of action. Their inotropic properties make cardiactonic agents critical in addressing inadequate perfusion , and acute heart failure conditions including cardiogenic shock , as ...
The effects of amrinone vary widely with species and experimental condition; therefore, its inotropic effects are variable. [3] A loss in sensitivity to phosphodiesterase 3 inhibitors, including amrinone, has been observed in end stage heart failure in humans; other treatment options may be more useful for improvement in these stages. [3]
The beneficial effects of small alkyl groups on the heterocycle could be to twist the central ring away from exact coplanarity with the heterocyclic ring. There is a similar twist in cAMP and there is general agreement that high affinity PDE3 inhibitors should adopt an energetically favoured planar conformation that mimics the anti conformation ...
Milrinone; Glucocorticoids [13] The therapies available to manage PPHN include high frequency ventilation, surfactant instillation, pulmonary vasodilators, and extracorporeal membrane oxygenation. [14] iNO is the preferred medication for PPHN due to its ability to more selectively cause pulmonary vasodilation in comparison to intravenous ...
Findings indicate that β 2 stimulants, especially in parenteral administration such as inhalation or injection, can induce adverse effects: Tachycardia secondary to peripheral vasodilation and cardiac stimulation (Such tachycardia may be accompanied by palpitations.) [4] Tremor, excessive sweating, anxiety, insomnia, and agitation [5]
Therefore, non-selective and selective inhibitors of PDE could potentially be used in MAS therapy. However, the use of PDE inhibitors can cause cardiovascular side effects. Non-selective PDE inhibitors, such as methylxanthines, increase concentrations of cAMP and cGMP in the cells leading to bronchodilation and vasodilation.
Most side effects are direct consequences of the vasodilation and the resultant low blood pressure. They include headache ("nitrate headache") resulting from the widening of blood vessels in the brain, reflex tachycardia (fast heart rate), flush, dizziness, nausea and vomiting. These effects usually subside after a few days if the treatment is ...