Nokea
Which organism is least likely to show the characteristic periodicity of fever in malaria?
- A. p. malariae
- B. p. vivax
- C. p. ovale
- D. p. falciparum
Correct Answer: D
Rationale: Falciparum's fever messy, constant, not vivax, ovale, malariae's tidy cycles. Nurses spot this chronic chaos king.
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Which is the most common organism infecting coral cuts?
- A. non-cholera vibrio
- B. mycobacterium marinum
- C. aeromonas species
- D. strep pyogenes
Correct Answer: D
Rationale: Coral cuts strep pyogenes streaks in, not vibrio, mycobacterium, aeromonas, or E. coli's swim. Nurses hit this chronic skin ripper.
Percutaneous cervical cordotomy:
- A. Is performed under general anaesthesia.
- B. Occurs by entry of a needle into the intervertebral foramen between cervical vertebrae C4 and C5.
- C. Involves thermoablation of the anterior spinothalamic tract.
- D. Is performed on the same side as the pain.
Correct Answer: C
Rationale: Percutaneous cervical cordotomy (PCC) relieves cancer pain via targeted nerve destruction. It's done under local anesthesia with sedation, not general, to monitor patient response (e.g., pain relief, side effects) during stimulation. The needle enters at C1-C2, not C4-C5, targeting the lateral spinothalamic tract contralateral to the pain not the anterior tract explicitly, though terminology varies. Thermoablation destroys pain fibers, confirmed by test stimulation. It's performed opposite the pain side due to crossed spinothalamic pathways. Complete numbness isn't typical; sensory loss is partial. Thermoablation's specificity using radiofrequency to interrupt pain transmission defines PCC's efficacy, minimizing damage to adjacent motor tracts while achieving analgesia.
Heart failure with preserved ejection fraction is caused by:
- A. Ventricular hypertrophy reducing contractility of muscles
- B. Decreased perfusion of the myocardium
- C. Dilated cardiomyopathy
- D. Impaired ventricular relaxation resulting in the lack of ability of ventricles to fill with blood
Correct Answer: D
Rationale: HFpEF stiff ventricles won't relax, slashing fill-up, not pump-out. Hypertrophy aids, doesn't cause; perfusion dips hurt supply; dilated's HFrEF. Nurses target this, a chronic fill flaw.
Which patient is at greatest risk for pancreatic cancer?
- A. An elderly black male with a history of smoking and alcohol use
- B. A young, white obese female with no known health issues
- C. A young black male with juvenile onset diabetes
- D. An elderly white female with a history of pancreatitis
Correct Answer: A
Rationale: Pancreatic cancer risk escalates with specific factors: age, race, smoking, and alcohol. An elderly Black male with smoking and alcohol history tops the list incidence peaks in older adults, Black populations face higher rates, and both habits are strong carcinogens, damaging pancreatic tissue over time. A young, obese white female has obesity as a risk, but youth and fewer exposures lower her odds. A young Black male with diabetes links to a risk factor, yet juvenile onset and age reduce immediate concern. An elderly white female with pancreatitis has a notable risk chronic inflammation predisposes but lacks the compounded impact of smoking and alcohol. The elderly Black male's profile aligns with epidemiological data, making him the nurse's focus for vigilant monitoring and early detection efforts.
Fatty liver disease is more common in people with metabolic syndrome or type 2 diabetes. The pathogenesis of fatty liver disease is not yet completely known. Question: What does current research suggest with respect to the pathogenesis?
- A. Steatosis correlates with inflammation
- B. Inflammation correlates with fibrosis
- C. Steatosis correlates with liver damage
- D. Steatosis correlates with insulin resistance
Correct Answer: D
Rationale: Fatty liver's tale steatosis ties to insulin resistance, a metabolic syndrome root, not just inflammation, fibrosis, or vague damage. Nurses see this, a chronic fat-glucose knot.