Question

Which drug groups do not inhibit clot formation? (SELECT ALL THAT APPLY)

Answer 1

Correct Answers:

Antihypertensives
Antibiotics
Antipyretics
Antiemetics

Rationale :

✅ B. Antihypertensives

🫀 Antihypertensive medications are used to manage elevated blood pressure, which is a major risk factor for cardiovascular events such as stroke, myocardial infarction, and heart failure.

🫀 These drugs work by affecting vascular tone, cardiac output, or fluid balance, depending on the class (e.g., beta-blockers, ACE inhibitors, calcium channel blockers, or diuretics).

🫀 Importantly, antihypertensives do not act on the blood clotting mechanisms and do not inhibit coagulation or platelet function.

🫀 Their primary role is to control hemodynamics, not prevent thrombus formation.

✅ C. Antibiotics

🦠 Antibiotics are medications designed to kill or inhibit the growth of bacteria, helping the body eliminate infections.

🦠 They target specific bacterial processes like cell wall synthesis, protein synthesis, or DNA replication, depending on the class (e.g., penicillins, macrolides, fluoroquinolones).

🦠 While some rare antibiotics may have adverse effects on platelets or the liver, they do not have a primary mechanism involving the coagulation pathway.

🦠 Therefore, antibiotics do not inhibit clot formation and are not used to treat or prevent thrombotic disorders.

✅ D. Antipyretics

🌡️ Antipyretics (e.g., acetaminophen, ibuprofen) are medications that help reduce fever by acting on the hypothalamic thermoregulatory center to lower the set-point temperature.

🌡️ Although some antipyretics like NSAIDs have mild antiplatelet effects, their primary function is temperature control, not anticoagulation.

🌡️ Acetaminophen, the most commonly used antipyretic, has no significant impact on platelet function or clotting pathways.

🌡️ Therefore, antipyretics as a group do not serve the function of inhibiting clot formation.

✅ E. Antiemetics

🤢 Antiemetics are used to prevent or control nausea and vomiting, especially in postoperative patients, those undergoing chemotherapy, or those with GI illnesses.

🤢 They work by blocking receptors such as dopamine, serotonin, histamine, or acetylcholine in the GI tract and central nervous system.

🤢 Antiemetics have no action on the clotting cascade, platelets, or fibrin formation and thus do not interfere with coagulation.

🤢 Their therapeutic action is purely to relieve gastrointestinal symptoms, not to influence thrombus risk or hemostasis.

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Answer 2

Correct Answers:

Subcutaneous
Intramuscular
Intradermal
Intravenous

Rationale :

✅ A. Subcutaneous (SubQ)

💉 The subcutaneous route involves injecting medication into the layer of fat and connective tissue just beneath the skin but above the muscle.

💉 It is commonly used for medications that require slow, sustained absorption, such as insulin, heparin, and certain vaccines.

💉 Common injection sites include the abdomen, thighs, and upper arms.

💉 This method is easy to administer, often used in outpatient or home settings, and is suitable for self-administration with proper education.

✅ B. Intramuscular (IM)

🧠 Intramuscular injections deliver medication deep into the muscle tissue, where there is a rich blood supply, allowing for faster absorption than the subcutaneous route.

🧠 It is commonly used for vaccines (e.g., flu shot), pain medications (e.g., ketorolac), and antibiotics (e.g., penicillin).

🧠 Typical injection sites include the deltoid muscle (arm), vastus lateralis (thigh), and ventrogluteal or dorsogluteal areas (hip/buttocks).

🧠 The IM route is beneficial when a rapid onset is needed and the medication is too irritating for subcutaneous tissue.

✅ D. Intradermal (ID)

🩺 The intradermal route delivers a small volume of medication into the dermis, just beneath the outer layer of skin.

🩺 It is primarily used for diagnostic purposes, such as the tuberculin skin test (PPD) and allergy testing, where a visible skin reaction is needed.

🩺 Absorption is slow and localized, making it ideal for observing delayed hypersensitivity responses.

🩺 Common sites include the forearm or upper back, and a small wheal or bubble forms at the site when injected correctly.

✅ E. Intravenous (IV)

💊 Intravenous administration involves injecting medication directly into the vein, entering the bloodstream immediately.

💊 This is the fastest and most precise route for systemic drug effects, often used in emergencies, surgery, and critical care.

💊 It allows for continuous infusion, intermittent dosing, or IV push (bolus) delivery methods.

💊 The IV route is essential for drugs requiring tight control, such as cardiac medications, sedatives, antibiotics, and chemotherapy agents.

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Answer 3

Correct Answers:

12.3 mL/hr

Rationale :

Step 1: Calculate the required dose in units per hour

15 units/kg/hr×82 kg=1,230 units/hr

Step 2: Determine the concentration of the solution

25,000 units÷250 mL=100 units/mL

Step 3: Calculate the infusion rate in mL/hr

1,230 units/hr÷100 units/mL=12.3 mL/hr

✅ Final Answer: A. 12.3 mL/hr

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Answer 4

Correct Answers:

Potassium level of 3.0 mEg/L

Rationale :

⚠️ A potassium level of 3.0 mEq/L indicates hypokalemia, which significantly increases the risk of digoxin toxicity.

⚠️ Low potassium levels enhance digoxin's effects on the myocardium, making the heart more sensitive to the drug and increasing the chances of life-threatening arrhythmias.

⚠️ Normal potassium range is typically 3.5–5.0 mEq/L, so this level must be reported before proceeding.

⚠️ The other values—BP 132/82 mm Hg, HR 66/min, and digoxin level of 1.2 ng/mL—are within acceptable ranges for a patient on digoxin.

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Answer 5

Correct Answers:

3.1 mL

Rationale :

Step 1: Convert weight from pounds to kilograms

22 lb÷2.2=10 kg

Step 2: Calculate the required dose in mg

10 mg/kg×10 kg=100 mg

Step 3: Use the available concentration to calculate volume to administer

Available: 160 mg ÷ 5 mL

So:100 mg÷160 mg×5 mL=3.125 mL

Step 4: Round to the nearest tenth

3.125 mL≈3.1 mL

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Answer 6

Correct Answers:

1610 mL

Rationale :

Step 1: Convert all oral fluids from ounces to milliliters

(1 oz = 30 mL)

Coffee: 8 oz × 30 = 240 mL

Juice: 3 oz × 30 = 90 mL

Soda: 12 oz × 30 = 360 mL

Step 2: Calculate how much water was consumed from the pitcher

Started with 800 mL, 200 mL remaining

800 mL – 200 mL = 600 mL consumed

Step 3: Calculate total IV fluid intake over 8 hours

40 mL/hr × 8 hr = 320 mL

Step 4: Add all components together

240 mL (coffee)

90 mL (juice)

360 mL (soda)

600 mL (water)

320 mL (IV fluids)

Total = 240 + 90 + 360 + 600 + 320 = 1,610 mL

✅ Correct Answer: D. 1610 mL

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Answer 7

Correct Answers:

133 mL/hr

Rationale :

Step 1: Use the formula

Flow rate (mL/hr)=Volume (mL)÷Time (hr)

Step 2: Convert 45 minutes to hours

45÷60=0.75 hr

Step 3: Plug values into the formula

100 mL÷0.75 hr=133.33 mL/hr

Step 4: Round to the nearest whole number (because pump uses whole mL/hr)

133.33≈133 mL/hr

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Answer 8

Correct Answers:

5.524 kg

Rationale :

⚖️ To convert grams (g) to kilograms (kg), you move the decimal three places to the left, because 1,000 g = 1 kg.

5,524 g=5.524 kg

⚖️ This is done by dividing by 1,000 or shifting the decimal:

5,524. → 5.524

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Answer 9

Correct Answers:

Age, weight, and sex

Rationale :

🧬 Age, weight, and sex are key physiological factors that significantly influence how the body absorbs, distributes, metabolizes, and excretes medications.

🧬 Age affects organ function—infants and older adults often have slower metabolism and excretion, altering drug effects.

🧬 Weight can influence drug dosage, especially for medications dosed in mg/kg. Higher or lower body mass affects volume of distribution.

🧬 Sex differences, including hormonal levels and body composition, can impact drug metabolism and pharmacodynamics, leading to different responses or side effects between males and females.

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Answer 10

Correct Answers:

125 mL/hr

Rationale :

Step 1: Use the formula →

Flow rate = Total volume ÷ Time

Step 2:Plug in the values → Flow rate =

3000 mL ÷ 24 hr

Step 3: Flow rate = 125 mL/hr

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ATI LPN Pharmacology Exam III

No.

1 :
Which drug groups do not inhibit clot formation? (SELECT ALL THAT APPLY)

2 :
Which method are for administering drugs by parenteral routes? (Select all that apply.)

3 :
A continuous heparin infusion is to begin at 15 units/kg/hr for a client weighing 82 kg. Available: 25,000 units of heparin in 250 mL D5W. Calculate the mL/hr. (the pump is capable of delivering in tenths of an mL).

4 :
A nurse is collecting data from a client prior to the administration of digoxin. Which of the following findings should the nurse report to the provider?

7 :
Calculate the flow rate in mL/hr. and Units/hr. (Equipment used is programmable in whole mL/hr and Show all work) Order: 100 mL 0.45% NS in 45 min by infusion pump. Calculate rate in ml/hr

8 :
Convert the following metric measures to kg by moving the decimal: 5,524 g

9 :
What factors affect physiological response to drug use?

10 :
A nurse is assisting with care of a cient who has a prescription for 3000 ml of intravenous huias over the nes:24 hr The nurse should set the IV pump to deliver how many mL/hr? (Round to the nearest whole number)

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ATI LPN Pharmacology Exam III

No.

1 : Which drug groups do not inhibit clot formation? (SELECT ALL THAT APPLY)

2 : Which method are for administering drugs by parenteral routes? (Select all that apply.)

3 : A continuous heparin infusion is to begin at 15 units/kg/hr for a client weighing 82 kg. Available: 25,000 units of heparin in 250 mL D5W. Calculate the mL/hr. (the pump is capable of delivering in tenths of an mL).

4 : A nurse is collecting data from a client prior to the administration of digoxin. Which of the following findings should the nurse report to the provider?

7 : Calculate the flow rate in mL/hr. and Units/hr. (Equipment used is programmable in whole mL/hr and Show all work) Order: 100 mL 0.45% NS in 45 min by infusion pump. Calculate rate in ml/hr

8 : Convert the following metric measures to kg by moving the decimal: 5,524 g

9 : What factors affect physiological response to drug use?

10 : A nurse is assisting with care of a cient who has a prescription for 3000 ml of intravenous huias over the nes:24 hr The nurse should set the IV pump to deliver how many mL/hr? (Round to the nearest whole number)

1 :
Which drug groups do not inhibit clot formation? (SELECT ALL THAT APPLY)

2 :
Which method are for administering drugs by parenteral routes? (Select all that apply.)

3 :
A continuous heparin infusion is to begin at 15 units/kg/hr for a client weighing 82 kg. Available: 25,000 units of heparin in 250 mL D5W. Calculate the mL/hr. (the pump is capable of delivering in tenths of an mL).

4 :
A nurse is collecting data from a client prior to the administration of digoxin. Which of the following findings should the nurse report to the provider?

7 :
Calculate the flow rate in mL/hr. and Units/hr. (Equipment used is programmable in whole mL/hr and Show all work) Order: 100 mL 0.45% NS in 45 min by infusion pump. Calculate rate in ml/hr

8 :
Convert the following metric measures to kg by moving the decimal: 5,524 g

9 :
What factors affect physiological response to drug use?

10 :
A nurse is assisting with care of a cient who has a prescription for 3000 ml of intravenous huias over the nes:24 hr The nurse should set the IV pump to deliver how many mL/hr? (Round to the nearest whole number)