Your patient need morphine 7.5 mg subcutaneous STAT for myocardial infarction. On hand is morphine 15 mg per ml. How many ml will you administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use trailing zero. Type the number ONLY, no label)
The Correct Answer is ["0.5"]
Dose ordered / Dose available ×volume
7.5 / 15 ×1=0.5ml
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Apply oxygen, administer morphine, and place the client on bed rest with cardiac monitoring: These interventions prioritize reducing myocardial oxygen demand and alleviating ischemic pain in the acute phase of NSTEMI. Morphine acts as a potent analgesic and vasodilator, while oxygen improves tissue saturation. Bed rest and continuous monitoring ensure hemodynamic stability and rapid detection of dysrhythmias.
B. Have the client chew two aspirin 325 mg each, administer oxygen and bring the crash cart to the bedside: While aspirin is indicated for its antiplatelet effects, a dose of 650 mg exceeds the standard loading dose of 162 to 325 mg. Administering excessive aspirin increases the risk of gastrointestinal hemorrhage without providing additional cardiac benefit. The crash cart is necessary but secondary to immediate pharmacological stabilization.
C. Administer oxygen, give a dose of nitroglycerin sublingual, and follow with a nonsteroidal anti-inflammatory: Nonsteroidal anti-inflammatory drugs, excluding aspirin, are contraindicated in acute myocardial infarction because they increase the risk of myocardial rupture and mortality. Nitroglycerin helps with vasodilation, but the addition of an NSAID is harmful. This combination fails to provide the necessary sedation and potent analgesia required.
D. Begin a heparin drip, administer oxygen, and call the lab for stat troponin levels: Heparin and troponin levels are essential components of NSTEMI management but do not address the client's immediate, unrelieved pain. Anticoagulation prevents further thrombus formation but does not actively reduce the current ischemic workload. Immediate nursing priorities must focus on symptomatic relief and cardiac workload reduction.
Correct Answer is A
Explanation
A. "A tiny balloon is used to open up the blocked artery and a wire mesh stent is placed to keep the artery open.": Percutaneous transluminal coronary angioplasty involves inflating a balloon to compress atherosclerotic plaque against the arterial wall. The subsequent placement of a stent provides structural support to prevent the vessel from recoiling or reclosing. This accurately describes the mechanical process of restoring coronary blood flow.
B. "The blocked artery is bypassed to an areas where there is proper blood flow for the heart muscle.": This explanation describes a coronary artery bypass graft (CABG), which is a surgical procedure, not an angioplasty. Bypassing involves using a graft vessel to create a new route for blood flow around an obstruction. Angioplasty is a minimally invasive catheter-based intervention that works within the original vessel.
C. "A tiny blade is used to cut away the plaque buildup and a stent is placed to keep the blood flowing properly.": The use of a cutting device to remove plaque is known as an atherectomy, which is a different procedure from standard angioplasty. While sometimes used together, angioplasty primarily relies on pressure and displacement rather than excision. Atherectomy is reserved for specific types of calcified or hard lesions.
D. "The blood clot or plaque is dissolved, allowing for adequate blood flow and oxygen to flow to the heart muscle.": This describes thrombolytic therapy or fibrinolysis, which uses medications to chemically break down clots. Angioplasty is a mechanical intervention rather than a pharmacological one. While medications are used during the procedure, the primary mechanism of opening the vessel is physical dilation.
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