A nurse is caring for a client who has been prescribed parenteral lidocaine. Before administering the medication, the nurse should review the medical record for which condition?

Choice A reason: Glaucoma is not directly related to the administration of lidocaine, as it does not affect intraocular pressure or the pathophysiology of glaucoma. Choice B reason: Heart block is a type of arrhythmia where the electrical signal is delayed or blocked entirely. Since lidocaine affects cardiac conduction, it is crucial to review the medical record for heart block before administration. Choice C reason: Gastric ulcers are not typically a concern when administering lidocaine, as it does not have gastrointestinal effects when given parenterally. Choice D reason: Diabetes mellitus is not a contraindication for lidocaine administration; however, monitoring blood glucose levels is always important in diabetic patients receiving any medication.