Pharmacology For Nursing Students, Nursing School & NCLEX RN / NCLEX LPN - Beta Blockers in 37 Seconds Mode of Action: A beta blocker blocks Beta 1 Receptors in the heart to decrease heart Rate, cardiac output, and cardiac oxygen consumption. Examples of beta blockers are metoprolol, propranolol, and atenolol. Medications typically end in LOL. Mnemonic: Use the acronymn MANBABE to remember the cardioselective beta blocker medications. Uses: Beta blockers can be used to treat hypertension, acute