Timolol - General
What is the therapeutic class for Timolol?
Antihypertensive, antianginal, anti-glaucoma agent
What are common risk factors for hypertension?
High-sodium, physical inactivity, obesity, family history, etc.
This side effect is associated with a low heart rate.
Bradycardia
When administering Timolol eye drops, the nurse should remind patients to remove these before instillation to avoid reduced absorption.
What are contact lenses?
This lab measures the percentage of RBCs in a patient's blood volume.
Hematocrit
What is the pharmacological class of Timolol?
Nonselective beta-adrenergic blocker (beta-blocker)
What BP reading defines stage 1 hypertension
S: 130-139 mmHg
D: 80-89 mmHg
This side effect can cause dizziness, fainting, and is associated with a BP reading lower than 90/60mmHg
Hypotension
The nurse should instruct patients not to stop Timolol abruptly, since this can worsen this cardiac condition.
What is angina or rebound hypertension?
This electrolyte imbalance, often caused by diuretics, can lead to muscle weakness and cardiac arrhythmias.
What is hypokalemia?
What is the primary MOA of Timolol?
Blocks beta-1 and beta-2 receptors -> decreases HR, BP, and intraocular pressure.
This specific autoimmune disorder destroys insulin‑producing pancreatic beta cells, leading to chronic hyperglycemia and an increased risk of hypertension.
Type 1 diabetes mellitus
This adverse effect is characterized by chest pain caused from reduced blood flow to cardiac muscle.
Angina pectoris
When giving Timolol eye drops, the nurse should teach the patient to perform this technique to reduce systemic absorption.
What is nasolacrimal occlusion
This stage of wound healing involves new tissue formation.
Proliferative
What two vital signs should you check before administration?
Heart rate and blood pressure
This class of medications, including lisinopril, lowers blood pressure by blocking the conversion of angiotensin I to angiotensin II.
What are ACE inhibitors?
Timolol’s systemic effects can reduce blood flow to the extremities, sometimes leading to this adverse effect characterized by cold hands and feet.
What is peripheral vasoconstriction
Timolol can mask this warning sign of hypoglycemia, so diabetic patients require close monitoring.
What is tachycardia?
What is the main difference between Gram-positive & Gram-negative bacteria?
Gram-positive have a thick peptidoglycan layer w/o an outer membrane, while Gram-negative have a thin peptidoglycan layer with an outer membrane making them more resistant to antibiotics.
What two respiratory conditions can make the use of Timolol dangerous?
Asthma and COPD make using Timolol dangerous because it can trigger bronchospasm.
Renin-Angiotensin-Aldosterone-System
Because Timolol slows conduction through the atrioventricular node, patients may develop this adverse cardiac rhythm disturbance.
What is heart block?
Because Timolol is a non‑selective beta‑blocker, the nurse should hold the medication and notify the provider if the patient develops this serious cardiac complication characterized by impaired conduction between the atria and ventricles.
What is heart block?
Which cranial nerve helps with equilibrium and balance?
Vestibulocochlear nerve (VIII)