What it means
A cardioselective (beta-1) beta blockerBAY-tuh BLOK-erA drug that blocks the effects of adrenaline on beta receptors, slowing the heart rate and lowering blood pressure.Full entry , meaning it acts mostly on the heart and less on the lungs, though high doses can still affect breathing. It is used for high blood pressure, angina and after a heart attack. It leaves the body through the kidneys, so the dose is lowered when kidney function is poor. Side effects include tiredness, a slow pulse, dizziness and cold hands and feet.
For the nurse
Check the apical pulse and blood pressure before giving it and hold it as ordered if they are low. Teach the client not to stop it suddenly, which can bring on chest pain or a heart attack, and to rise slowly.
At a glance
| Drug class | beta-adrenergic blocker (cardioselective) |
|---|---|
| Brand names | Tenormin |
| Spanish | atenolol |
| Also written | Tenormin |
Related terms
hypertension
Blood pressure that stays higher than normal, at or above 130/80 mm Hg by current US guidelines.
beta blocker
A drug that blocks the effects of adrenaline on beta receptors, slowing the heart rate and lowering blood pressure.
propranolol
A beta blocker that slows the heart and lowers blood pressure by blocking adrenaline's effects on the heart and lungs.
carvedilol
A beta blocker that also widens blood vessels, taken by mouth for heart failure and high blood pressure.