Adenosine in Critical Care

What is the primary role of adenosine in critical care?

• To manage unstable tachycardia

• To treat hypertension

• To cure diabetes

• To alleviate chronic pain

Adenosine is formed by combining adenine with which molecule?

• Sucrose

• Fructose

• Ribose

• Glucose

Which of the following is a key function of adenosine triphosphate (ATP) in cells?

• To provide energy for cellular processes

• To store genetic information

• To transport oxygen

• To synthesize proteins

What is the effect of adenosine on the cardiac AV nodal tissue?

• It causes muscle contraction

• It enhances calcium influx

• It slows impulse transmission

• It increases heart rate

Which receptor is involved in the vasodilation effect of adenosine in endothelial tissue?

• A1 receptor

• A2B receptor

• B1 receptor

• C2 receptor

What is a common side effect of adenosine administration?

• Improved vision

• Increased appetite

• Weight gain

• Shortness of breath

In which condition should adenosine be used cautiously due to the risk of bronchoconstriction?

• Obstructive lung disease

• Diabetes

• Hypertension

• Liver disease

What is the initial dose of adenosine for treating supraventricular tachycardia (SVT)?

• 9 milligrams

• 3 milligrams

• 6 milligrams

• 12 milligrams

How is adenosine used in cardiac stress tests?

• To decrease blood pressure

• To enhance muscle strength

• To dilate coronary blood vessels

• To increase heart rate

What is the recommended infusion rate of adenosine for cardiac stress tests?

• 160 micrograms per kilogram per minute

• 100 micrograms per kilogram per minute

• 120 micrograms per kilogram per minute

• 140 micrograms per kilogram per minute