NCLEX Diagnostic Procedures: Prep, Positioning & Aftercare

bolt The 60-second version

check_circleBefore iodinated contrast: ask about prior contrast reactions, check kidney function, and follow the facility protocol for metformin in clients with reduced kidney function; encourage fluids afterward if allowed.
check_circleBefore MRI: screen for implanted devices and metal (some pacemakers, cochlear implants, metal fragments) and remove metal objects.
check_circleThoracentesis: client sits upright, leaning over a bedside table; afterward, watch for pneumothorax (dyspnea, decreased breath sounds) and obtain a chest x-ray if ordered.
check_circleParacentesis: client voids first and sits upright; afterward, watch for hypotension, especially after large-volume removal.
check_circleLumbar puncture: side-lying with knees to chest (or sitting bent forward); afterward, monitor for headache and the puncture site.
check_circleEndoscopy and bronchoscopy: keep NPO until the gag reflex returns.

target What you'll be able to do · aligned to NCLEX-RN Test Plan · Reduction of Risk Potential

RISK REDScreen clients before contrast studies and MRI.
RISK REDPosition clients correctly for bedside procedures.
RISK REDMonitor for complications after procedures and sedation.
RISK REDCollect specimens correctly.

Contrast and imaging safety

Imaging items test screening before the test and kidney protection after it.

Imaging safety. A shellfish allergy is not a specific contraindication to iodinated contrast; a prior contrast reaction is the most important history.

Bedside procedures

Position and aftercare are the high-yield facts.

Procedure	Position	After the procedure
Thoracentesis	Sitting, leaning forward over a table	Breath sounds, SpO₂, dyspnea (pneumothorax); chest x-ray if ordered; site for bleeding
Paracentesis	Upright in bed or chair; bladder emptied first	BP and HR (hypotension); volume removed; albumin as ordered after large volumes
Lumbar puncture	Side-lying, knees to chest, chin down (or sitting, bent forward)	Headache, site leakage, leg sensation and movement; fluids as allowed
Liver biopsy	Supine, right arm above the head; hold breath on exhalation during needle insertion	Right side-lying to compress the site; monitor for bleeding
Bone marrow biopsy	Prone or side-lying (iliac crest)	Pressure on the site; monitor for bleeding

Check coagulation studies and platelets before procedures with bleeding risk, as ordered.

Endoscopic and cardiac procedures

Sedation and airway protection are the common threads.

Endoscopy aftercare. Severe pain, fever, or rigid abdomen after endoscopy suggests perforation and needs immediate reporting.

After sedation. Fall precautions continue until the client is fully alert.

Specimen collection

Collection errors can lead to wrong treatment.

Clean-catch urine: cleanse, start voiding, then collect midstream.
24-hour urine: discard the first void, then collect all urine for 24 hours, including the final void at the end time; keep on ice or as instructed.
Blood cultures: draw before antibiotics when possible, from two sites as ordered, with strict aseptic technique.
Sputum: early morning, after rinsing the mouth with water, coughing deeply.

NGN-style case

Matching aftercare to the procedure.

functions Clinical judgment case — after thoracentesis

Thirty minutes after a right thoracentesis that removed 1,200 mL, the client is anxious and short of breath. SpO₂ is 88% and breath sounds are absent on the right. What should the nurse do?

Recognize cues: new dyspnea, hypoxemia, absent breath sounds on the procedure side.
Analyze: possible pneumothorax (or re-expansion edema).
Raise the head of the bed and apply oxygen as ordered; stay with the client.
Notify the provider immediately and anticipate a chest x-ray.

Answer. Suspect pneumothorax: position upright, give oxygen, and notify the provider for an urgent chest x-ray.

Next in the roadmap

Chest Tubes

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