D446 Adult Health II - Set 3 - Part 3

Correct Answer: Phosphorus retention occurring

Failed kidneys cannot excrete phosphorus, which binds calcium lowering levels, stimulating parathyroid hormone secretion attempting to normalize calcium, causing hyperparathyroidism.
Option a is incorrect because calcium absorption decreases in CKD from vitamin D deficiency; hyperparathyroidism results from low calcium, not increased absorption.
Option c is incorrect because vitamin D deficiency occurs in CKD, not excess; this contributes to hypocalcemia driving secondary hyperparathyroidism.
Option d is incorrect because while magnesium may be affected, phosphorus retention driving hypocalcemia is the primary trigger for hyperparathyroidism.

Correct Answer: Severe airway obstruction

Pulsus paradoxus indicates severe airway obstruction causing exaggerated intrathoracic pressure swings affecting venous return and blood pressure with breathing.
Option a is incorrect because infection doesn't specifically cause pulsus paradoxus; this finding indicates severe mechanical obstruction affecting hemodynamics.
Option c is incorrect because medication overdose wouldn't cause pulsus paradoxus; this indicates severe airway obstruction affecting cardiac filling.
Option d is incorrect because anxiety doesn't cause pulsus paradoxus; this physical finding indicates severe obstruction with hemodynamic compromise.

Correct Answer: Hyperkalemia with hyperphosphatemia

Massive tumor cell death releases intracellular contents including potassium and phosphorus while phosphorus binds calcium, creating this characteristic dangerous pattern.
Option a is incorrect because tumor lysis causes specific electrolyte elevations from cell contents release, not general depletion of electrolytes.
Option c is incorrect because tumor lysis causes hyperkalemia and hyperphosphatemia with secondary hypocalcemia, not hyponatremia which isn't characteristic.
Option d is incorrect because tumor lysis creates a predictable pattern of elevated potassium, phosphorus, and uric acid with low calcium.

Correct Answer: Add different class

Adding COMT inhibitors or MAO-B inhibitors prolongs levodopa's effect, addressing wearing-off by extending symptom control between doses more effectively.
Option a is incorrect because increasing intervals would worsen wearing-off; the goal is maintaining consistent drug levels preventing symptom return.
Option c is incorrect because decreasing dose would worsen symptoms; wearing-off requires strategies to extend medication effectiveness, not reduce it.
Option d is incorrect because route change doesn't address the duration problem; adding medications that prolong levodopa's action is needed.

Correct Answer: Consumption coagulopathy developing

Widespread clotting consumes platelets and clotting factors faster than replacement, causing simultaneous thrombosis in microcirculation and bleeding from factor depletion.
Option a is incorrect because DIC is a pathological process of uncontrolled coagulation and consumption, not a medication interaction effect.
Option c is incorrect because while liver disease affects coagulation, DIC's simultaneous bleeding and clotting reflects consumption coagulopathy specifically.
Option d is incorrect because platelet dysfunction alone wouldn't cause simultaneous clotting; the consumption of factors explains both phenomena.

Correct Answer: Alveolar-capillary membrane damage

ARDS involves diffuse alveolar-capillary membrane injury causing refractory hypoxemia from impaired gas exchange, beyond pneumonia's localized infection and inflammation.
Option a is incorrect because ARDS represents inflammatory lung injury regardless of infection spread; it's the membrane damage that's characteristic.
Option c is incorrect because mucus production characterizes airway diseases; ARDS specifically involves alveolar-capillary membrane injury affecting gas exchange.
Option d is incorrect because bronchospasm indicates airway disease; ARDS is characterized by alveolar damage and refractory hypoxemia, not bronchospasm.

Correct Answer: Excitotoxic damage occurring

Prolonged seizures cause excitotoxic neuronal death from excessive glutamate release and metabolic exhaustion, causing permanent brain damage requiring urgent termination.
Option a is incorrect because while medications may become less effective, the critical issue is preventing irreversible excitotoxic brain damage.
Option c is incorrect because while respiratory compromise occurs, the primary concern is permanent neuronal damage from prolonged electrical activity.
Option d is incorrect because although hyperthermia develops, excitotoxic brain damage is the most serious consequence requiring immediate seizure termination.

Correct Answer: Kidneys structurally normal

Hepatorenal syndrome involves functional kidney failure from severe vasoconstriction despite normal kidney structure, potentially reversible with liver transplantation unlike structural damage.
Option a is incorrect because hepatorenal syndrome typically lacks significant proteinuria seen in primary kidney diseases with structural damage present.
Option c is incorrect because hepatorenal syndrome usually occurs with low blood pressure from cirrhosis, not acute hypertension development.
Option d is incorrect because hematuria suggests structural kidney disease; hepatorenal syndrome is functional failure without bleeding or structural abnormalities.

Correct Answer: Cyst compression effects

Expanding cysts compress renal vasculature activating renin-angiotensin system, causing hypertension before significant nephron loss or kidney function decline occurs.
Option a is incorrect because fluid retention occurs with kidney failure; early hypertension in PKD results from cyst effects on vasculature.
Option c is incorrect because while PKD is genetic, hypertension specifically results from cysts compressing blood vessels activating renin system.
Option d is incorrect because hypertension in PKD is disease-related from cyst compression, not medication effects, occurring before treatment typically.

Correct Answer: Gradual dyspnea development

Radiation pneumonitis develops gradually weeks to months post-treatment with progressive dyspnea and dry cough, unlike acute infectious pneumonia presentation typically.
Option a is incorrect because radiation pneumonitis may have low-grade fever but lacks the acute high fever pattern of bacterial pneumonia.
Option c is incorrect because radiation pneumonitis typically causes dry cough; productive purulent sputum suggests bacterial infection, not radiation injury.
Option d is incorrect because while chest discomfort occurs, the gradual progressive dyspnea pattern distinguishes radiation pneumonitis from acute infection.