A client newly diagnosed with open-angle glaucoma has been prescribed timolol (Timoptic). Prior to administering this medication, which condition in the client's history should the nurse immediately inform the prescriber about?
1. Primary hypertension
2. Deep-vein thrombosis
3. Supraventricular tachycardia
4. Asthma
Correct Answer: 4
Rationale 1: Beta blockers are used to treat hypertension and would not be contraindicated for this reason.
Rationale 2: A deep-vein thrombosis would not be a concern when administering timolol.
Rationale 3: Beta blockers can be used to reduce the heart rate. This history would not be a concern when administering timolol.
Rationale 4: Nonselective beta blockers can cause bronchospasm. Clients with asthma are at risk for this adverse effect.
Global Rationale: Nonselective beta blockers can cause bronchospasm. Clients with asthma are at risk for this adverse effect. Beta blockers are used to treat hypertension and would not be contraindicated for this reason. A deep-vein thrombosis would not be a concern when administering timolol. Beta blockers can be used to reduce the heart rate. This history would not be a concern when administering timolol.
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