What is the primary advantage of using low molecular weight heparins (LMWHs) over heparin?
LMWHs produce a more stable effect on coagulation; thus, fewer lab tests are needed.
LMWHs may be given by the oral route
LMWHs have a short duration of action
LMWHs possess greater anticoagulant activity
The Correct Answer is A
A. LMWHs produce a more stable effect on coagulation; thus, fewer lab tests are needed: Correct LMWHs have a more predictable anticoagulant response compared to unfractionated heparin, resulting in a more stable effect on coagulation. Because of their predictable response, routine monitoring of coagulation parameters, such as activated partial thromboplastin time (aPTT), is typically not required with LMWH therapy, unlike with unfractionated heparin.
B. LMWHs may be given by the oral route: Incorrect. LMWHs are administered by the subcutaneous route.
C. LMWHs have a short duration of action: Incorrect. LMWHs have a longer duration of action compared to unfractionated heparin.
D. LMWHs possess greater anticoagulant activity: incorrect. LMWHs generally have less potent anticoagulant activity compared to unfractionated heparin, but their more predictable response and longer half-life make them advantageous in many clinical scenario
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Temperature of 100.8 Degrees Fahrenheit (38.2 Degrees Celsius): Fever can indicate a potential adverse reaction to the medication or may be a sign of infection, which could complicate the patient's condition. While a fever can be a sign of an infection, it's not a typical adverse effect for alteplase
B. Skin rash with urticaria: Skin rash and urticaria (hives) can indicate an allergic reaction to alteplase. Allergic reactions can range from mild to severe and may necessitate discontinuation of the medication and administration of appropriate treatment, such as antihistamines or corticosteroids, depending on the severity of the reaction but it's less common than bleeding.
C. Wheezing with labored breathing: Wheezing and labored breathing can indicate a severe allergic reaction or anaphylaxis to alteplase but again, bleeding is a more prominent concern.
D. Bruising and epistaxis: Alteplase increases the risk of bleeding due to its thrombolytic activity. Bruising and epistaxis (nosebleeds) are common manifestations of bleeding associated with alteplase therapy. Monitoring for these signs helps detect potential bleeding complications early, allowing for prompt intervention to minimize further bleeding and manage the patient's condition appropriately.
Correct Answer is ["23"]
Explanation
To determine how many milliliters (mL) of potassium chloride the nurse should administer to provide 30 mEq, we can set up a proportion:
20 mEq is contained in 15 mL. So, to find out how many mL contain 30 mEq, we can set up the proportion:
20 mEq:15 mL=30 mEq:? mL20mEq:15mL=30mEq:xmL
Cross multiply:
20×?=15×3020×x=15×30
20?=45020x=450
Now, solve for ?x:
?=45020x=20450
?=22.5x=22.5
So, the nurse should administer approximately 22.5 mL of potassium chloride.
Rounded to the nearest whole number, this would be 23 mL.
Therefore, the nurse should administer 23 mL of potassium chloride.
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