🔷 The nurse should remove air bubbles from IV tubing before connecting or starting the infusion to prevent air from entering the vascular system.

🔷 Re-priming the tubing allows the IV solution to completely fill the line and push trapped air out safely.

🔷 Even though very tiny bubbles may not usually cause harm, visible air bubbles should not be ignored during priming.

🔷 Proper priming helps maintain safe IV therapy and reduces the risk of complications such as air embolism.

🔷 The nurse should inspect the tubing carefully before infusion begins.

Why the others are not best:

❌ Flush the tubing rapidly to force the air into the vein — Air should never be forced into the vein because this can place the patient at risk for an air embolism. Rapid flushing also increases the chance of unsafe IV administration.

❌ Lower the IV solution bag below the insertion site immediately — Lowering the bag does not remove air from the tubing. It may also interrupt flow or cause blood to back up into the tubing.

❌ Continue the infusion because small bubbles are expected — Visible air bubbles should be removed before infusion. Continuing without correction is unsafe nursing practice.

💎 The nurse announces “clear” before defibrillation to protect staff from accidental electrical shock.

💎 Defibrillation delivers a high-energy electrical current through the patient’s chest to stop the chaotic rhythm of ventricular fibrillation.

💎 Anyone touching the patient, bed, or equipment during shock delivery may become part of the electrical pathway.

💎 Calling “clear” gives all team members time to step away and visually confirm safety.

💎 The nurse should also quickly scan the area before delivering the shock.

Why the others are not best:

❌ To verify the cardiac rhythm one final time — Rhythm verification is important, but that is not the reason for saying “clear.” The word “clear” is specifically a safety warning before shock delivery.

❌ To confirm the synchronized mode is activated — Ventricular fibrillation requires unsynchronized defibrillation, not synchronized cardioversion. Synchronized mode is used for certain unstable rhythms with a pulse.

❌ To allow the patient to exhale before shock delivery — Patient exhalation is not the purpose of the “clear” command. The priority is staff safety during electrical shock delivery.

🔷 Atrial fibrillation is identified by an irregular rhythm and the absence of clear, consistent P waves.

🔷 In atrial fibrillation, the atria do not contract in an organized way because electrical impulses fire rapidly and irregularly.

🔷 This causes the ventricular response to become irregularly irregular, which often leads to symptoms such as palpitations, shortness of breath, fatigue, or dizziness.

🔷 The nurse should recognize this rhythm because atrial fibrillation increases the risk for blood clot formation and stroke due to poor atrial emptying.

🔷 Assessment should include the patient’s heart rate, blood pressure, oxygenation, symptoms, and risk for decreased cardiac output.

❌ Chaotic rhythm without measurable heart rate — This describes ventricular fibrillation, not atrial fibrillation. Ventricular fibrillation is a life-threatening rhythm with no effective cardiac output.

❌ Regular rhythm with distinct P waves — This suggests a more organized rhythm such as normal sinus rhythm. Atrial fibrillation does not have distinct, consistent P waves.

❌ Wide QRS complexes with regular ventricular rhythm — This is more consistent with ventricular tachycardia or another ventricular rhythm. Atrial fibrillation is usually recognized by an irregular rhythm without distinct P waves.

💎 Ventricular fibrillation is a medical emergency because the ventricles quiver instead of pumping blood effectively.

💎 The patient has no effective cardiac output, which means blood is not being circulated to the brain, heart, and vital organs.

💎 The priority treatment is immediate unsynchronized defibrillation to stop the chaotic electrical activity and allow the heart’s normal pacemaker to restart.

💎 Defibrillation should be performed as quickly as possible along with CPR and emergency resuscitation measures.

💎 Delayed defibrillation greatly decreases the chance of survival.

❌ Barium enema — This is a diagnostic test for the lower gastrointestinal tract. It has no role in treating ventricular fibrillation.

❌ Capsule endoscopy — This evaluates the small intestine using a swallowed camera capsule. It is unrelated to emergency cardiac rhythm treatment.

❌ Routine pacemaker check only — A routine pacemaker check is not appropriate for ventricular fibrillation. Ventricular fibrillation requires immediate emergency treatment, not routine monitoring.

✨ A stable patient with ventricular tachycardia may have a pulse and adequate blood pressure, so treatment can include antiarrhythmic medication.

✨ Antiarrhythmic medications help slow or control abnormal ventricular electrical activity and may prevent the rhythm from worsening.

✨ The nurse should continue to assess for signs of instability, including hypotension, chest pain, altered mental status, severe shortness of breath, or loss of pulse.

✨ If the patient becomes unstable, treatment may progress to synchronized cardioversion or emergency resuscitation based on the patient’s condition.

✨ Ventricular tachycardia is serious because it can reduce cardiac output and may deteriorate into ventricular fibrillation.

❌ Fluid restriction only — Fluid restriction does not correct the abnormal ventricular rhythm. It may be used for certain conditions such as heart failure, but it is not the treatment for ventricular tachycardia.

❌ Colonoscopy — A colonoscopy evaluates the colon and is unrelated to cardiac rhythm management.

❌ Capsule endoscopy — Capsule endoscopy evaluates the gastrointestinal tract, not the heart. It does not treat ventricular tachycardia.

🔷 PICC line dressing changes require measures that reduce the risk of introducing microorganisms into a central venous access site.

🔷 Applying surgical masks to both the nurse and patient helps prevent respiratory droplets from contaminating the sterile field or insertion site.

🔷 The mask should be applied before removing the old dressing because the site becomes exposed once the dressing is removed.

🔷 This is especially important because a PICC line tip terminates near the central circulation, where infection can become serious quickly.

🔷 The nurse should then perform hand hygiene, apply gloves, remove the old dressing carefully, assess the site, use sterile technique, cleanse as ordered, and apply a new sterile transparent dressing.

❌ Apply clean gloves to both hands before beginning the procedure — Clean gloves are used when removing the old dressing, but this option is less complete because the key safety action before exposing the PICC site is applying masks to prevent droplet contamination.

❌ Label the transparent dressing with date and initials first — The dressing is labeled after the new sterile dressing is applied. Labeling first does not protect the insertion site from contamination.

❌ Clean the insertion site with chlorhexidine before removing dressing — The insertion site cannot be properly cleaned while the old dressing is still covering it. Cleansing occurs after the old dressing is removed and the site is exposed.

💎 Atrial fibrillation is characterized by an irregular rhythm, no identifiable P waves, and usually a narrow QRS complex if ventricular conduction is normal.

💎 The absence of clear P waves occurs because the atria are firing rapidly and chaotically instead of depolarizing from one organized impulse.

💎 A QRS interval less than 0.10 seconds indicates that ventricular conduction is still relatively narrow and not originating from a wide ventricular rhythm.

💎 Patients with atrial fibrillation may report palpitations, shortness of breath, dizziness, fatigue, or weakness due to decreased atrial contribution to ventricular filling.

💎 The nurse should monitor for decreased cardiac output and recognize that atrial fibrillation increases the risk for atrial clot formation and stroke.

❌ Sinus bradycardia — Sinus bradycardia has a regular rhythm with identifiable P waves before each QRS complex. The heart rate is slow, but the rhythm still originates from the SA node.

❌ Normal sinus rhythm — Normal sinus rhythm has a regular rhythm, consistent P waves, and a normal rate. The finding of no identifiable P waves does not match normal sinus rhythm.

❌ Ventricular tachycardia — Ventricular tachycardia usually has wide QRS complexes and originates from the ventricles. The question describes a narrow QRS interval, which supports atrial fibrillation instead.