Hemodynamic Monitoring and Interventions Practice Questions
20 free Hemodynamic Monitoring and Interventions practice questions for the NCLEX Exam. Tap an option to answer — you get instant feedback, the correct answer, and a detailed explanation for every question.
What parameter directly reflects left ventricular preload?
- A Pulmonary artery wedge pressure (PAWP)
- B Central venous pressure (CVP)
- C Mean arterial pressure (MAP)
- D Cardiac output (CO)
Correct answer: Pulmonary artery wedge pressure (PAWP)
PAWP reflects left atrial pressure and, therefore, left ventricular end-diastolic pressure or preload. It is used to assess left-sided heart function and guide fluid management.
What is the normal range for central venous pressure (CVP) in hemodynamic monitoring?
- A 0–2 mmHg
- B 2–6 mmHg
- C 8–12 mmHg
- D 12–18 mmHg
Correct answer: 2–6 mmHg
The normal CVP is 2–6 mmHg, representing right atrial pressure and right ventricular preload. Values above this suggest fluid overload or right-sided heart failure.
Which hemodynamic parameter is most directly affected by vasoconstrictor medications like norepinephrine?
- A Preload
- B Afterload
- C Stroke volume
- D Contractility
Correct answer: Afterload
Vasoconstrictors increase systemic vascular resistance (SVR), thereby raising afterload. This can increase blood pressure but may reduce cardiac output if the heart cannot overcome the increased resistance.
A patient with cardiogenic shock has a low cardiac output and elevated PAWP. Which intervention is most appropriate?
- A Administer IV fluids rapidly
- B Start vasodilator therapy
- C Increase PEEP on ventilator
- D Begin diuretic therapy
Correct answer: Start vasodilator therapy
In cardiogenic shock, afterload reduction with vasodilators can help improve cardiac output by decreasing the resistance against which the failing ventricle must pump.
Which device provides continuous, real-time measurement of arterial blood pressure?
- A Central venous catheter
- B Arterial line
- C Pulmonary artery catheter
- D Peripherally inserted central catheter (PICC)
Correct answer: Arterial line
An arterial line is used for continuous invasive blood pressure monitoring and frequent arterial blood sampling. It provides real-time readings and allows detection of rapid changes.
The nurse notes a dampened arterial waveform on the monitor. The most likely cause is:
- A Hypertension
- B Air in the tubing
- C Tachycardia
- D Vasospasm
Correct answer: Air in the tubing
Air bubbles, loose connections, or clots in the line can dampen the arterial waveform. Troubleshooting involves checking the system for air and ensuring proper transducer leveling and zeroing.
Before zeroing a transducer system, the nurse should position it at the:
- A Position at the patient's head level
- B Mid-axillary line at the right atrium
- C Position at the level of the umbilicus
- D Position at the level of the sternum
Correct answer: Mid-axillary line at the right atrium
The phlebostatic axis, located at the fourth intercostal space mid-axillary line, represents the level of the right atrium and ensures accurate pressure readings.
A nurse is interpreting a cardiac index (CI) value of 1.8 L/min/m². This finding indicates:
- A Normal cardiac performance
- B High-output heart failure
- C Low cardiac output state
- D Volume overload
Correct answer: Low cardiac output state
A cardiac index below 2.2 L/min/m² indicates poor cardiac output relative to body surface area, commonly seen in shock or heart failure.
When leveling the transducer too high above the phlebostatic axis, the pressure readings will appear:
- A Falsely elevated
- B Falsely decreased
- C Unchanged
- D Variable
Correct answer: Falsely decreased
Placing the transducer too high causes lower hydrostatic pressure readings, resulting in falsely decreased values.
A nurse caring for a patient with sepsis notes low SVR and low MAP. The best initial treatment is:
- A Vasopressor therapy
- B Loop diuretics
- C Calcium channel blockers
- D Beta-blockers
Correct answer: Vasopressor therapy
Sepsis causes vasodilation and decreased SVR; vasopressors like norepinephrine are used to restore vascular tone and maintain MAP ≥65 mmHg.
A patient’s cardiac output (CO) is 4.8 L/min and heart rate (HR) is 80 bpm. The stroke volume (SV) is:
- A 40 mL
- B 50 mL
- C 60 mL
- D 80 mL
Correct answer: 60 mL
SV = CO ÷ HR = 4800 mL ÷ 80 = 60 mL. Stroke volume represents the amount of blood ejected with each heartbeat.
A low CVP reading in a trauma patient most likely indicates:
- A Fluid overload
- B Hypovolemia
- C Heart failure
- D Pulmonary edema
Correct answer: Hypovolemia
Low CVP reflects decreased venous return and right-sided preload, consistent with hypovolemia or hemorrhage.
A patient with increased PAWP and crackles in both lungs likely needs which intervention?
- A IV fluid bolus
- B Diuretic administration
- C Trendelenburg positioning
- D Increase IV fluid rate
Correct answer: Diuretic administration
Elevated PAWP indicates left-sided heart failure and pulmonary congestion. Diuretics help reduce preload and pulmonary edema.
Which parameter best indicates the effectiveness of fluid resuscitation in a hypovolemic patient?
- A Heart rate
- B Mean arterial pressure (MAP)
- C Central venous pressure (CVP)
- D Urine output
Correct answer: Urine output
Urine output reflects renal perfusion and is a sensitive indicator of effective volume restoration and tissue perfusion.
A nurse caring for a patient with an intra-aortic balloon pump (IABP) knows the balloon inflates during:
- A Systole
- B Diastole
- C Isovolumetric contraction
- D Atrial systole
Correct answer: Diastole
The IABP inflates during diastole to increase coronary perfusion and deflates before systole to reduce afterload, improving cardiac output.
Which hemodynamic finding would the nurse expect in a patient with septic shock?
- A Increased SVR with markedly decreased cardiac output
- B Decreased SVR with increased cardiac output
- C Increased CVP and increased PAWP from congestion
- D Normal SVR with persistently low cardiac output
Correct answer: Decreased SVR with increased cardiac output
In early septic shock, vasodilation causes decreased SVR with compensatory increased cardiac output (warm shock).
Which nursing action is most appropriate during insertion of a central venous catheter?
- A Place the patient in Trendelenburg position
- B Position the patient sitting upright
- C Ask the patient to exhale and hold breath
- D Inflate a tourniquet above the insertion site
Correct answer: Place the patient in Trendelenburg position
Trendelenburg position distends the neck veins and reduces the risk of air embolism during central line insertion.
A patient has a mean arterial pressure (MAP) of 55 mmHg. This indicates:
- A Adequate perfusion to vital tissues
- B Risk of organ hypoperfusion
- C Elevated systemic afterload
- D Normal mean systemic pressure
Correct answer: Risk of organ hypoperfusion
A MAP below 65 mmHg suggests inadequate perfusion pressure for vital organs, requiring intervention such as fluids or vasopressors.
In arterial pressure monitoring, the square wave test is performed to:
- A Measure cardiac output
- B Calibrate the transducer
- C Assess system dynamic response
- D Evaluate MAP accuracy
Correct answer: Assess system dynamic response
The square wave test ensures the monitoring system’s accuracy and responsiveness by assessing the damping characteristics of the line.
A patient on mechanical ventilation shows a drop in CVP during inspiration. The nurse interprets this as:
- A A normal finding
- B Pulmonary hypertension
- C Right ventricular failure
- D Cardiac tamponade
Correct answer: A normal finding
During inspiration, negative intrathoracic pressure transiently decreases venous return, lowering CVP—this is a normal physiologic response.