What is a vasoconstrictor in dentistry?

Vasoconstrictors are integral components of all local anesthetic solutions whenever depth and duration of anesthesia are important. From: Medical Emergencies in the Dental Office (Seventh Edition), 2015.

What vasoconstrictor is used in local anesthetic?

8’9 The only vasoconstrictors marketed in the US in combination with local anesthetics are epinephrine, levonordefrin, and norepinephrine; all are sympathomimetic amines. The following discussion will primarily concern epinephrine, the best studied and most widely used vasoconstrictor.

What is vasoconstrictor used for?

Vasoconstrictors are useful additives to local anesthetic solutions. They can enhance the duration and quality of the anesthetic block while also decreasing surgical blood loss. Precautions must be taken, however, when using vasoconstrictors with certain patients, especially those with cardiovascular disease.

Does anesthesia cause vasoconstriction?

Abstract. Aminoamide local anesthetics induce vasoconstriction in vivo and in vitro.

What drugs are vasoconstrictors?

Vasoconstrictor Agents

Drug Drug Description
Midodrine An alpha-adrenergic agonist used to treat orthostatic hypotension.
Methysergide An ergot alkaloid used for the prophylaxis of migraine and cluster headaches.
Dihydroergotamine An ergot alkaloid used in the acute treatment of migraine headache and cluster headache.

Why do we Vasodilate?

The purpose of vasodilation is to increase blood flow to the tissues in the body. In response to a need for oxygen or nutrients, tissues can release endogenous vasodilators. The result is a decrease in vascular resistance and an increase in capillary perfusion.

Does anesthesia cause vasodilation or vasoconstriction?

Brief Summary: Previous studies on animals suggest that inhalational anesthetics can reduce vascular tension in vitro resulting in vasodilation and decrease in blood pressure.

What drugs are Vasoconstrictors?

Vasoconstriction medications include:

  • alpha-adrenoceptor agonists.
  • vasopressin analogs.
  • epinephrine.
  • norepinephrine.
  • phenylephrine (Sudafed PE)
  • dopamine.
  • dobutamine.
  • migraine and headache medications ( serotonin 5‐hydroxytryptamine agonists or triptans)

Why are vasoconstrictors added to local anesthesia?

Addition of a vasoconstrictor to a local anesthetic may have several beneficial effects: a decrease in the peak plasma concentration of the local anesthetic agent, increase in the duration and the quality of anesthesia, reduction of the minimum concentration of anesthetic needed for nerve block, and decrease of blood …