NU335 Hamodynamics Spring 2026 at Baton Rouge Community College
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Free NU335 Hamodynamics Spring 2026 at Baton Rouge Community College Questions
Prescribed: Amiodarone hydrochloride 5 mg/kg as IV push now
Available: Amiodarone hydrochloride 150 mg/3 mL
Patient weight: 80 kg
How many mL will the nurse administer for the prescribed dose?
- 8 mL
- 10 mL
- 12 mL
- 15 mL
Explanation
Solution:
- First, calculate the total prescribed dose:
- 5 mg/kg × 80 kg = 400 mg
- 5 mg/kg × 80 kg = 400 mg
- Next, determine how many mL are needed for the 400 mg dose using the available concentration:
- 150 mg/3 mL = 50 mg/mL
- 400 mg ÷ 50 mg/mL = 8 mL
- 150 mg/3 mL = 50 mg/mL
The nurse interprets the patient's 6-second strip as which rhythm? See attachment.
- A Atrial fibrillation
- B Normal sinus rhythm with premature atrial contractions (PACs)
- C Ventricular Fibrillation
- D Atrial flutter
Explanation
Explanation:
The rhythm on the strip shows a regular, rapid rhythm with sawtooth-shaped P waves, which is characteristic of atrial flutter. In atrial flutter, the atria contract very rapidly, often at rates between 250-350 beats per minute, but the ventricular response is typically slower due to a block at the AV node. The hallmark of atrial flutter is the presence of sawtooth waves in the P wave portion of the EKG, which is consistent with what is seen in this strip.
The nurse recognizes third-degree AV block on a patient's EKG strip. What does the nurse expect the treatment to be?
- A Diltiazem (Cardizem) IV
- B Insertion of a permanent pacemaker
- C Observation for progression to higher degree block
- D Procainamide (Pronestyl) IV
Explanation
Explanation:
In third-degree AV block, the electrical signals do not reach the ventricles from the atria, leading to a dissociation between the atrial and ventricular rhythms. The treatment of choice for third-degree AV block is the insertion of a permanent pacemaker, as it will regulate the electrical conduction in the heart, ensuring that the ventricles are appropriately paced.
The nurse is analyzing the patient's arterial waveform. The dicrotic notch on the descending limb of the waveform signifies which action?
- Closure of the aortic valve
- Opening of the aortic valve
- Closure of the mitral valve
- Opening of the mitral valve
Explanation
Explanation:
The dicrotic notch on the descending limb of the arterial waveform represents the closure of the aortic valve. It occurs after the peak of the arterial pressure curve (systole), marking the transition from systole to diastole. The closure of the aortic valve causes a brief retrograde flow of blood that is seen as the dicrotic notch. This notch is an important feature in the arterial waveform and is used to assess the functioning of the aortic valve.
The nurse is caring for a patient with a pulmonary artery catheter. The nurse assesses the pressure monitoring system and would immediately correct which finding?
- The pressure bag is inflated to 100 mmHg.
- Normal saline is used for the flush bag.
- The transducer is zeroed with good waveform noted.
- The connections are secure.
Explanation
Explanation
The pressure bag should be inflated to 300 mmHg to maintain a constant flush pressure of the pressure monitoring system. This ensures a steady, reliable flow of the flush solution through the catheter and prevents clots or occlusions in the catheter. A pressure bag set at 100 mmHg is insufficient and could cause inaccurate pressure readings or system malfunctions.
A patient on mechanical ventilation becomes very frustrated when trying to communicate. Which intervention should the nurse perform to assist the patient?
- Ask a close family member to assist with communication.
- Encourage the patient to use sign language to communicate.
- Ask the patient to write or spell words with an alphabet board.
- Consult speech therapy to teach the patient voice exercises.
Explanation
Explanation
Patients on mechanical ventilation may be unable to speak, leading to frustration. One effective way to help patients communicate is by providing an alternative method, such as using an alphabet board to write or spell out words. This allows the patient to express their needs and reduce feelings of frustration. It's a practical and immediate intervention that can be used when verbal communication is not possible.
The nurse is assisting with a patient being intubated at the bedside. After tube endotracheal tube insertion and the cuff inflation, what are the next appropriate actions to confirm placement before securing the airway? Select all that apply.
- Administer a sedative and paralytic agent
- Order a chest x-ray
- Use an end-tidal CO2 detector
- Auscultate for bilateral breath sounds
- Obtain ABGs
Explanation
C. Use an end-tidal CO2 detector
D. Auscultate for bilateral breath sounds
C. Use an end-tidal CO2 detector
Explanation: The most reliable and immediate method to confirm correct placement of the ET tube is the use of an end-tidal CO2 detector. This device detects the presence of exhaled CO2, which confirms that the tube is in the trachea and not the esophagus. A positive CO2 reading is a clear indication that the tube is properly placed in the lungs.
D. Auscultate for bilateral breath sounds
Explanation: Auscultating both sides of the chest is important to confirm that the ET tube is in the trachea. If the tube is in the correct position, breath sounds should be heard equally on both sides of the chest. If breath sounds are only heard on one side, it could indicate that the tube is in one of the mainstem bronchi, and the tube needs to be repositioned.
A nurse is caring for a patient with a right radial arterial line. Which action should the nurse take?
- Ensure the pressure bag around the flush solution is inflated to 300 mm Hg.
- Flush the line before administering antibiotics.
- Instruct the patient to bear down when readings are obtained.
- Position the patient in Trendelenburg to obtain readings.
Explanation
Explanation:
A pressure bag around the flush solution should be inflated to 300 mm Hg to ensure continuous and steady flushing of the arterial line. This helps prevent clot formation within the catheter and ensures accurate readings by maintaining the patency of the line. It also helps to provide a consistent flow of saline to clear the catheter.
A patient is in pulseless arrest and the EKG shows asystole. What is the drug used in ACLS for this rhythm?
- Adenosine 6 mg
- Amiodarone 300 mg
- Atropine 1 mg
- Epinephrine 1 mg
Explanation
Explanation:
In cases of asystole, which is a form of pulseless arrest and a non-shockable rhythm, epinephrine 1 mg is the first-line drug recommended by the ACLS protocol. Epinephrine is a vasopressor that helps to increase coronary and cerebral perfusion pressure during CPR, improving the chances of restoring a perfusing rhythm. It is administered every 3-5 minutes during the resuscitation process if the patient remains in asystole or PEA (pulseless electrical activity).
The nurse obtains the following 6 second ECG strip on a patient. The nurse interprets this strip as what rhythm? (see attachment)
- A Ventricular tachycardia
- B Ventricular fibrillation
- C Supraventricular tachycardia
- D Atrial fibrillation
Explanation
Explanation:
Ventricular fibrillation (VF) is a shockable rhythm that presents as rapid, erratic electrical activity of the heart. There are no identifiable P waves, QRS complexes, or T waves, and the rhythm is completely disorganized. VF causes the heart to stop pumping blood effectively, leading to a lack of perfusion to vital organs, which is why immediate defibrillation is required.
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