A nurse is providing discharge instructions to a client who has asthma and is about to start taking theophylline (Theo-24). The nurse should tell the client that this medication might cause which of the following adverse effects?
Tachycardia
Drowsiness
Constipation
Oliguria
The Correct Answer is A
Choice A reason: Tachycardia is a possible adverse effect of theophylline, as it is a methylxanthine that stimulates the central nervous system and the cardiac muscle. The nurse should instruct the client to monitor their pulse rate and report any palpitations, chest pain, or irregular heartbeat.

Choice B reason: Drowsiness is not a likely adverse effect of theophylline, as it is a stimulant that increases alertness and energy. The nurse should caution the client to avoid taking the medication close to bedtime, as it may cause insomnia.
Choice C reason: Constipation is not a common adverse effect of theophylline, as it does not affect the gastrointestinal motility or secretion. The nurse should advise the client to maintain a balanced diet, adequate fluid intake, and regular exercise to prevent constipation.
Choice D reason: Oliguria is not a typical adverse effect of theophylline, as it does not impair the renal function or cause fluid retention. The nurse should encourage the client to drink enough fluids to prevent dehydration and maintain a normal urine output.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: This is incorrect because insulin can be given intravenously in certain situations, such as diabetic ketoacidosis, hyperglycemic hyperosmolar state, or perioperative care.
Choice B reason: This is correct because regular insulin is the only type of insulin that can be administered intravenously, as it is a short-acting insulin that has a rapid onset and peak. Other types of insulin, such as intermediate-acting or long-acting, are not suitable for intravenous use, as they have a delayed onset and peak and may cause hypoglycemia.
Choice C reason: This is incorrect because insulin aspart and insulin lispro are rapid-acting insulins that have a faster onset and peak than regular insulin. They are not recommended for intravenous use, as they may cause severe hypoglycemia. They are usually given subcutaneously before meals to control postprandial blood glucose levels.
Choice D reason: This is incorrect because not all forms of insulin can be administered intravenously, as explained above. Only regular insulin can be given intravenously, and the dose may differ from the subcutaneous dose depending on the patient's blood glucose level and insulin sensitivity.
Correct Answer is C
Explanation
Choice A reason: Respiratory rate and heart rate are not specific indicators of oxygen saturation. They can be affected by many other factors, such as pain, anxiety, or dehydration.
Choice B reason: Blood pressure and temperature are not directly related to oxygen saturation. They can be influenced by other conditions, such as infection, inflammation, or shock.
Choice C reason: Lung sounds and chest expansion are relevant parameters to monitor for a client with low oxygen saturation. They can indicate the presence of respiratory problems, such as pneumonia, asthma, or atelectasis, that can impair gas exchange and oxygen delivery.
Choice D reason: Hemoglobin and hematocrit are measures of red blood cell count and volume. They can affect the oxygen-carrying capacity of the blood, but they are not directly affected by oxygen saturation. They can be altered by other factors, such as bleeding, dehydration, or anemia.
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