According to the 2026 Brazilian perioperative ventilation guideline, which setting best reduces postoperative pulmonary complications?
Tidal volume 10 mL/kg predicted body weight
Tidal volume 6-8 mL/kg predicted body weight
FiO2 100% for the entire case
PEEP 0 cm H2O throughout surgery
Show the answer and explanation
Answer: B. Tidal volume 6-8 mL/kg predicted body weight
Topic: Consensus recommendations on perioperative mechanical ventil
Using a tidal volume of 6–8 mL/kg predicted body weight provides lung‑protective ventilation, limiting volutrauma and atelectasis, which the 2026 Brazilian guideline identifies as the most effective strategy to lower postoperative pulmonary complications.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
2Question
A nurse cares for a patient diagnosed with a peptic ulcer who has no history of NSAID use and tests negative for Helicobacter pylori. Which emerging etiology should the nurse recognize as an increasing cause of this condition?
Non-H. pylori Helicobacter infection
Chronic psychological stress
Gastroesophageal reflux disease
Excessive dietary spicy food intake
Show the answer and explanation
Answer: A. Non-H. pylori Helicobacter infection
Topic: Peptic Ulcer Disease Etiology
In patients with peptic ulcer disease who are Helicobacter pylori-negative and do not use NSAIDs, non-H. pylori Helicobacter species (such as Helicobacter heilmannii) are increasingly recognized as a significant emerging cause of mucosal ulceration.
Why the others are wrong
B – Stress can exacerbate ulcer symptoms but does not directly cause peptic ulceration.
C – GERD causes esophageal mucosal damage, not gastric or duodenal peptic ulcers.
D – Spicy foods irritate existing ulcers but do not cause new ulcer formation.
Remember: No NSAIDs, no H. pylori? Think non-H. pylori Helicobacter species.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
3Question
A nurse is teaching a client who received botulinum toxin type A injections for cervical dystonia. Which symptom should the nurse instruct the client to report immediately?
Localized flu-like symptoms
Moderate neck stiffness
Difficulty swallowing or breathing
Mild soreness at the injection site
Show the answer and explanation
Answer: C. Difficulty swallowing or breathing
Topic: Botulinum Toxin Adverse Effects
Botulinum toxin can spread beyond the injection site, causing life-threatening systemic effects like dysphagia and dyspnea. These symptoms indicate respiratory compromise or aspiration risk and require immediate emergency evaluation.
Why the others are wrong
A – Flu-like symptoms are common, mild, and typically resolve without intervention.
B – Neck stiffness is a common, transient side effect that does not require emergency care.
D – Mild soreness at the injection site is an expected, self-limiting local reaction.
Remember: Botox: If they struggle to swallow or breathe, they need help immediately.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
4Question
A female client with severe plaque psoriasis is prescribed oral acitretin. Which instruction is most important for the nurse to include in the teaching plan?
Donate blood monthly to monitor blood counts.
Take the medication on an empty stomach.
Expect your skin to be resistant to sunburn.
Avoid pregnancy during and for 3 years after therapy.
Show the answer and explanation
Answer: D. Avoid pregnancy during and for 3 years after therapy.
Topic: Acitretin Therapy Education
Acitretin is extremely teratogenic with a long half-life. Female clients of childbearing potential must use effective contraception and avoid pregnancy during therapy and for at least three years after discontinuing the medication to prevent severe birth defects.
Why the others are wrong
A – Blood donation is strictly prohibited during and for three years after therapy to protect pregnant recipients.
B – Acitretin should be taken with food to maximize absorption.
C – Acitretin increases photosensitivity, making the skin more susceptible to sunburn, not resistant.
Remember: Acitretin: Avoid pregnancy for three years after the last dose.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
5Question
Which oral antiseptic concentration is now recommended as the reference for perioperative use in dentoalveolar surgery?
Povidone‑iodine 10%
Chlorhexidine 0.12-0.2%
Cetylpyridinium chloride 0.05%
Chlorhexidine 2%
Show the answer and explanation
Answer: B. Chlorhexidine 0.12-0.2%
Topic: Perioperative Oral Antiseptic Selection
Chlorhexidine gluconate at a concentration of 0.12% to 0.2% is the established gold standard reference for perioperative oral antisepsis in dentoalveolar surgery. It effectively reduces bacterial load and prevents postoperative complications like alveolar osteitis.
Why the others are wrong
A – This concentration is used for skin preparation and is too strong for routine oral rinsing.
C – This is a weak, over-the-counter cosmetic rinse lacking the required perioperative efficacy.
D – This high concentration is used for root canals or skin prep, causing oral mucosal irritation.
Remember: Chlorhexidine 0.12% to 0.2% is the gold standard for oral surgery prep.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
6Question
A nurse cares for a client with end-stage kidney disease transitioning from conventional hemodialysis to high-volume hemodiafiltration. The nurse understands that hemodiafiltration provides enhanced clearance of which substance type through convective transport?
Middle-molecular-weight uremic toxins
Protein-bound electrolytes
Large cellular blood components
Small water-soluble molecules
Show the answer and explanation
Answer: A. Middle-molecular-weight uremic toxins
Topic: Hemodiafiltration Convective Transport
High-volume hemodiafiltration combines diffusive and convective transport. While standard hemodialysis effectively clears small water-soluble solutes via diffusion, the added convective solvent drag in hemodiafiltration significantly enhances the removal of larger middle-molecular-weight uremic toxins.
Why the others are wrong
B – Protein-bound solutes are poorly cleared by convection because they cannot cross the membrane.
C – Cellular components are too large to cross the dialyzer membrane and remain in circulation.
D – Small water-soluble molecules are already effectively cleared during standard hemodialysis via diffusion.
Remember: Convection drags middle molecules across the dialysis membrane.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
7Question
A client diagnosed with hypertrophic cardiomyopathy asks the nurse if physical activity is safe. Which response by the nurse provides the most accurate, current guidance?
Vigorous competitive sports are safe for all patients.
All physical exercise must be avoided permanently.
Physical activity is only permitted after heart surgery.
Regular, moderate-intensity exercise is generally safe.
Show the answer and explanation
Answer: D. Regular, moderate-intensity exercise is generally safe.
Current guidelines for hypertrophic cardiomyopathy recommend mild-to-moderate intensity exercise to improve cardiovascular health and quality of life. High-intensity competitive sports are restricted due to sudden cardiac death risk, but total exercise avoidance is discouraged.
Why the others are wrong
A – Vigorous competitive sports increase the risk of sudden cardiac death in HCM patients.
B – Complete avoidance causes physical deconditioning; mild-to-moderate physical activity is recommended.
C – Exercise safety depends on individual risk stratification, not whether heart surgery was performed.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
8Question
A nurse is providing discharge teaching to a client after a lung transplant. Which prescribed medication should the nurse highlight as a long-term prophylactic therapy used to reduce the risk of chronic lung allograft dysfunction?
Pirfenidone
Cyclosporine
Alemtuzumab
Azithromycin
Show the answer and explanation
Answer: D. Azithromycin
Topic: Lung Transplant Discharge Care
Azithromycin is a macrolide antibiotic with immunomodulatory properties used long-term in lung transplant recipients. It decreases airway inflammation and helps prevent or slow the progression of chronic lung allograft dysfunction, including bronchiolitis obliterans syndrome.
Why the others are wrong
A – Pirfenidone is an antifibrotic agent used for idiopathic pulmonary fibrosis, not post-transplant rejection.
B – Cyclosporine is a baseline immunosuppressant preventing acute rejection, not a macrolide immunomodulator for CLAD.
C – Alemtuzumab is a potent monoclonal antibody used for induction therapy or acute rejection episodes.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
9Question
A nurse cares for a client with an aneurysmal subarachnoid hemorrhage who has no seizure history. If the provider orders prophylactic antiseizure medication, which treatment duration should the nurse anticipate?
Current clinical guidelines recommend against routine long-term antiseizure prophylaxis following aneurysmal subarachnoid hemorrhage. If a provider prescribes prophylactic antiseizure therapy during the immediate post-hemorrhagic period, it should generally be limited to 3 days or less.
Why the others are wrong
A – Routine extended prophylaxis increases adverse drug effects and does not improve long-term outcomes.
B – Prophylaxis beyond 3 days lacks proven benefit and is linked to worse cognitive outcomes.
D – Prolonged prophylactic therapy is contraindicated without documented seizure activity or compelling indications.
Remember: SAH seizure prophylaxis: keep it brief, three days or less.
Written for the Medical Exam YouTube channel and answered blind by a second AI model before publication.
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Nursing