IV Therapy Nursing Exam Prep 2026-2027:
75 NCLEX-Style Questions & Rationales on
Vascular Access, IV Fluids, and
Complications
Description:
Master IV Therapy for the 2026 NCLEX-RN with this comprehensive test bank covering
crystalloids, central lines, vesicants, and emergency complications. Includes 75 high-yield
practice questions with detailed answer rationales.
Download the complete 2026/2027 edition now to pass your nursing exams with confidence.
, IV Therapy NCLEX Practice Questions 2026
SECTION A: FOUNDATIONS OF IV THERAPY
Indications, Purposes, and Clinical Applications
Question 1
A nurse is preparing to initiate intravenous therapy for a patient who requires rapid medication
delivery. Which of the following best describes the primary advantage of the intravenous route
for this patient?
A. It allows for slow and controlled absorption through the digestive system
B. It provides direct access to the bloodstream, ensuring immediate therapeutic effects
C. It eliminates the need for aseptic technique during administration
D. It prevents any adverse reactions from occurring
Answer: B
Explanation: The intravenous route provides direct access to the patient's bloodstream, allowing
medications to enter circulation immediately without the delays associated with absorption
through other routes. This is particularly crucial when rapid therapeutic effects are required in
emergency situations or when time-sensitive medications must be administered. The direct
intravascular delivery ensures maximum bioavailability, as the medication bypasses first-pass
metabolism and gastrointestinal absorption barriers. This route is also preferred when
medications would be too irritating to tissues if administered via other routes, such as
intramuscular or subcutaneous injections.
Question 2
A patient with severe dehydration and electrolyte imbalance requires fluid replacement. The
healthcare provider orders a solution that will remain primarily in the intravascular space to
expand circulating volume. Which type of solution would be most appropriate for this purpose?
A. Colloid fluids
B. Hypotonic solutions
C. Hypertonic solutions
D. Nutrient solutions
,Answer: A
Explanation: Colloid fluids contain large protein or starch molecules that are too large to cross
the capillary membrane, allowing them to remain within the intravascular space. This property
makes colloids particularly effective for expanding circulating blood volume. Common colloid
solutions include albumin, dextran, and hetastarch. These solutions are especially valuable in
treating hypovolemia, shock, and conditions requiring rapid volume expansion. Unlike
crystalloids, which distribute across fluid compartments, colloids exert oncotic pressure that
helps maintain fluid within the vascular compartment, making them more effective for sustained
volume expansion.
Question 3
A nursing student is reviewing the characteristics of different intravenous solutions. Which
statement accurately describes crystalloid solutions?
A. They contain large protein molecules that remain in the vascular space
B. They are clear solutions containing dissolved particles such as electrolytes and glucose
C. They can only be administered through central venous access devices
D. They are primarily used for nutritional support and caloric replacement
Answer: B
Explanation: Crystalloid solutions are characterized by their clear appearance, as particles are
completely dissolved in the solution. These solutions contain electrolytes, glucose, or
combinations of both, and can be administered through either peripheral or central venous access
devices. Crystalloids are the most commonly used intravenous fluids in clinical practice due to
their versatility and cost-effectiveness. They distribute throughout the extracellular fluid
compartments and are essential for maintaining fluid balance, electrolyte homeostasis, and
providing maintenance fluids. Common examples include normal saline, lactated Ringer's
solution, and dextrose solutions.
Question 4
A patient requires intravenous nutrition and the nurse administers 1 liter of 5% dextrose solution.
Approximately how many calories does this solution provide?
A. 85 calories
B. 120 calories
, C. 170 calories
D. 250 calories
Answer: C
Explanation: One liter of 5% dextrose solution provides approximately 170 calories. Dextrose
solutions are classified as nutrient solutions because they contain carbohydrates that provide
energy. Each gram of dextrose yields approximately 3.4 calories, and a 5% dextrose solution
contains 50 grams of dextrose per liter. While these solutions provide some caloric support, they
are not sufficient as a sole source of nutrition for patients requiring long-term nutritional support.
These solutions are often used to provide maintenance fluids with minimal caloric support or as a
vehicle for medication administration.
Question 5
A patient with severe hyponatremia requires careful correction of their electrolyte imbalance.
The nurse understands that which electrolyte solution contains sodium, chloride, potassium,
calcium, and lactate?
A. Normal saline solution
B. Ringer's solution
C. Lactated Ringer's solution
D. 5% dextrose in water
Answer: C
Explanation: Lactated Ringer's solution is an electrolyte solution that contains sodium (Na⁺),
chloride (Cl⁻), potassium (K⁺), calcium (Ca²⁺), and lactate. This balanced crystalloid solution
closely mimics plasma electrolyte composition and is commonly used for fluid resuscitation,
surgical patients, and conditions requiring replacement of extracellular fluid losses. The lactate
component is metabolized in the liver to bicarbonate, providing a buffering effect. This
distinguishes lactated Ringer's from other electrolyte solutions such as normal saline, which
contains only sodium and chloride, and Ringer's solution, which lacks lactate.
75 NCLEX-Style Questions & Rationales on
Vascular Access, IV Fluids, and
Complications
Description:
Master IV Therapy for the 2026 NCLEX-RN with this comprehensive test bank covering
crystalloids, central lines, vesicants, and emergency complications. Includes 75 high-yield
practice questions with detailed answer rationales.
Download the complete 2026/2027 edition now to pass your nursing exams with confidence.
, IV Therapy NCLEX Practice Questions 2026
SECTION A: FOUNDATIONS OF IV THERAPY
Indications, Purposes, and Clinical Applications
Question 1
A nurse is preparing to initiate intravenous therapy for a patient who requires rapid medication
delivery. Which of the following best describes the primary advantage of the intravenous route
for this patient?
A. It allows for slow and controlled absorption through the digestive system
B. It provides direct access to the bloodstream, ensuring immediate therapeutic effects
C. It eliminates the need for aseptic technique during administration
D. It prevents any adverse reactions from occurring
Answer: B
Explanation: The intravenous route provides direct access to the patient's bloodstream, allowing
medications to enter circulation immediately without the delays associated with absorption
through other routes. This is particularly crucial when rapid therapeutic effects are required in
emergency situations or when time-sensitive medications must be administered. The direct
intravascular delivery ensures maximum bioavailability, as the medication bypasses first-pass
metabolism and gastrointestinal absorption barriers. This route is also preferred when
medications would be too irritating to tissues if administered via other routes, such as
intramuscular or subcutaneous injections.
Question 2
A patient with severe dehydration and electrolyte imbalance requires fluid replacement. The
healthcare provider orders a solution that will remain primarily in the intravascular space to
expand circulating volume. Which type of solution would be most appropriate for this purpose?
A. Colloid fluids
B. Hypotonic solutions
C. Hypertonic solutions
D. Nutrient solutions
,Answer: A
Explanation: Colloid fluids contain large protein or starch molecules that are too large to cross
the capillary membrane, allowing them to remain within the intravascular space. This property
makes colloids particularly effective for expanding circulating blood volume. Common colloid
solutions include albumin, dextran, and hetastarch. These solutions are especially valuable in
treating hypovolemia, shock, and conditions requiring rapid volume expansion. Unlike
crystalloids, which distribute across fluid compartments, colloids exert oncotic pressure that
helps maintain fluid within the vascular compartment, making them more effective for sustained
volume expansion.
Question 3
A nursing student is reviewing the characteristics of different intravenous solutions. Which
statement accurately describes crystalloid solutions?
A. They contain large protein molecules that remain in the vascular space
B. They are clear solutions containing dissolved particles such as electrolytes and glucose
C. They can only be administered through central venous access devices
D. They are primarily used for nutritional support and caloric replacement
Answer: B
Explanation: Crystalloid solutions are characterized by their clear appearance, as particles are
completely dissolved in the solution. These solutions contain electrolytes, glucose, or
combinations of both, and can be administered through either peripheral or central venous access
devices. Crystalloids are the most commonly used intravenous fluids in clinical practice due to
their versatility and cost-effectiveness. They distribute throughout the extracellular fluid
compartments and are essential for maintaining fluid balance, electrolyte homeostasis, and
providing maintenance fluids. Common examples include normal saline, lactated Ringer's
solution, and dextrose solutions.
Question 4
A patient requires intravenous nutrition and the nurse administers 1 liter of 5% dextrose solution.
Approximately how many calories does this solution provide?
A. 85 calories
B. 120 calories
, C. 170 calories
D. 250 calories
Answer: C
Explanation: One liter of 5% dextrose solution provides approximately 170 calories. Dextrose
solutions are classified as nutrient solutions because they contain carbohydrates that provide
energy. Each gram of dextrose yields approximately 3.4 calories, and a 5% dextrose solution
contains 50 grams of dextrose per liter. While these solutions provide some caloric support, they
are not sufficient as a sole source of nutrition for patients requiring long-term nutritional support.
These solutions are often used to provide maintenance fluids with minimal caloric support or as a
vehicle for medication administration.
Question 5
A patient with severe hyponatremia requires careful correction of their electrolyte imbalance.
The nurse understands that which electrolyte solution contains sodium, chloride, potassium,
calcium, and lactate?
A. Normal saline solution
B. Ringer's solution
C. Lactated Ringer's solution
D. 5% dextrose in water
Answer: C
Explanation: Lactated Ringer's solution is an electrolyte solution that contains sodium (Na⁺),
chloride (Cl⁻), potassium (K⁺), calcium (Ca²⁺), and lactate. This balanced crystalloid solution
closely mimics plasma electrolyte composition and is commonly used for fluid resuscitation,
surgical patients, and conditions requiring replacement of extracellular fluid losses. The lactate
component is metabolized in the liver to bicarbonate, providing a buffering effect. This
distinguishes lactated Ringer's from other electrolyte solutions such as normal saline, which
contains only sodium and chloride, and Ringer's solution, which lacks lactate.
