Understanding Dopamine in Critical Care

What is the primary role of dopamine in critical care?

• To treat hypertension

• To manage diabetes

• To treat bradycardia and shock

• To cure infections

Dopamine is a precursor to which neurotransmitter?

• Serotonin

• Norepinephrine

• GABA

• Acetylcholine

Which receptors are primarily affected by dopamine?

• Alpha adrenergic receptors

• Beta adrenergic receptors

• All of the above

• Dopamine receptors

What is the effect of dopamine on beta 1 receptors in the heart?

• Bronchoconstriction

• Vasodilation

• Decreased heart rate

• Increased heart rate and contractility

At what dose does dopamine primarily stimulate beta adrenergic receptors?

• Between 15-20 micrograms/kg/min

• More than 20 micrograms/kg/min

• Less than 10 micrograms/kg/min

• Exactly 10 micrograms/kg/min

Which of the following is a common side effect of dopamine?

• Hypertension

• Palpitations

• Diarrhea

• Rash

What serious adverse effect can occur with high doses of dopamine?

• Seizures

• Hyperthermia

• Tissue necrosis

• Hypoglycemia

For treating bradycardia, what is the typical dose range of dopamine?

• 10-20 micrograms/kg/min

• 5-10 micrograms/kg/min

• 1-5 micrograms/kg/min

• 20-30 micrograms/kg/min

In the treatment of shock, which receptor activation is primarily beneficial?

• Beta 2 adrenergic receptors

• Muscarinic receptors

• Alpha 1 adrenergic receptors

• Dopamine receptors

What is the risk associated with increasing dopamine dosage beyond 20 micrograms/kg/min?

• Decreased heart rate

• No added support for blood pressure

• Increased risk of infection

• Increased risk of hypothermia