Which intervention improves oxygenation in a patient with atelectasis?

Correct Answer: B

Rationale: Atelectasis (lung collapse) improves with coughing to re-expand alveoli and clear secretions, enhancing oxygenation, unlike diuretics, ice packs, or fluid restriction.

Correct Answer: C

Rationale: Chest physiotherapy mobilizes thick secretions, improving airway clearance and oxygenation, more effectively than fluids alone, oxygen, or activity restriction.

Correct Answer: C

Rationale: The Venturi mask delivers a precise fraction of inspired oxygen (FiO2) via adjustable settings, ideal for conditions like COPD, unlike nasal cannula, simple mask, or non-rebreather.

Correct Answer: A

Rationale: Pre-oxygenation increases oxygen reserves, preventing hypoxemia during suctioning, unlike prolonged suction, large catheters, or continuous suction, which can worsen hypoxia.

Correct Answer: A

Rationale: Type 1 diabetes is an autoimmune condition where the body's immune system attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the pancreas produces little to no insulin, which is essential for regulating blood glucose levels.