A client receives a prescription for dalteparin 2500 units subcutaneously 2 hours before a scheduled procedure. The medication is available in a 5000 units/0.2 mL prefilled syringe. How many mL should the nurse administer? (Enter numeric value only)
The Correct Answer is ["0.1"]
To find out how many mL of dalteparin are needed for 2500 units, we need to use a proportion formula:
- (units of dalteparin)/(mL of dalteparin) = (units of dalteparin prescribed)/(mL of dalteparin needed)
- We can plug in the values that we know into the formula:
- (5000 units)/(0.2 mL) = (2500 units)/(x mL)
- We can cross-multiply and solve for x:
- 5000x = 2500 x 0.2
- x = (2500 x 0.2)/5000
- x = 0.1
- Therefore, the nurse should administer 0.1 mL of dalteparin to deliver 2500 units of the medication.
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Naxlex Comprehensive Predictor Exams
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Correct Answer is D
Explanation
Choice A reason: Hypertension is not a typical sign of an allergic reaction to piperacillin-tazobactam, which is an antibiotic. It may be caused by other factors, such as pain, anxiety, or renal impairment. The nurse should monitor the client's blood pressure and report any abnormal findings.
Choice B reason: Bradycardia is not a common or serious side effect of piperacillin-tazobactam. It may be related to other medications, such as beta-blockers, or underlying cardiac conditions. The nurse should check the client's pulse and rhythm and report any changes.
Choice C reason: Pupillary constriction is not associated with piperacillin-tazobactam or an allergic reaction. It may be caused by other drugs, such as opioids, or neurological disorders. The nurse should assess the client's level of consciousness and pupillary response.
Choice D reason: Scratchy throat is a possible sign of anaphylaxis, which is a severe and potentially fatal allergic reaction to piperacillin-tazobactam or any other drug. Other symptoms may include hives, swelling, wheezing, or hypotension. The nurse should stop the infusion immediately and call for help.
Correct Answer is D
Explanation
Choice D reason: Probenecid is a uricosuric drug that increases the excretion of uric acid in the urine by inhibiting its reabsorption in the kidneys. Uric acid is a waste product that results from the breakdown of purines, which are found in certain foods and drinks, such as meat, seafood, beer, and wine. Probenecid is used to treat gout, a type of arthritis that occurs when uric acid crystals accumulate in the joints and cause inflammation, pain, swelling, and stiffness. By lowering uric acid levels in the blood, probenecid can prevent gout attacks and reduce joint damage.
Choice A reason: Increasing the strength of the urine stream is not a purpose of probenecid, but rather a possible effect of some medications that relax or dilate the urinary tract muscles, such as alpha-blockers or anticholinergics. These medications can help to improve urinary flow and reduce symptoms of benign prostatic hyperplasia (BPH), or enlarged prostate gland, which can cause difficulty urinating or weak urine stream.
Choice B reason: Preventing the formation of kidney stones is not a purpose of probenecid, but rather a potential benefit of some medications that lower calcium or oxalate levels in the urine, such as thiazide diuretics or potassium citrate. These medications can help to prevent calcium oxalate stones, which are one of the most common types of kidney stones. Kidney stones are hard deposits of minerals and salts that form in the kidneys and can cause severe pain, nausea, vomiting, and blood in the urine.
Choice C reason: Decreasing pain and burning during urination is not a purpose of probenecid, but rather a desired outcome of some medications that treat urinary tract infections (UTIs), such as antibiotics or phenazopyridine. These medications can help to eliminate the bacteria that cause UTIs and relieve the discomfort and inflammation that they cause. UTIs are infections that affect the bladder, urethra, or kidneys and can cause frequent or urgent urination, pain or burning during urination, cloudy or foul-smelling urine, and fever.
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