A patient reports sudden difficulty breathing with tachypnea and tachycardia and localized chest pain. The physician suspects a pulmonary embolism. What test would you expect the physician to order?

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: The correct answer is D because tracheal deviation indicates a potential pneumothorax, a life-threatening complication of thoracentesis. Trachea should be midline. A, B, and C are incorrect because mild pain, small drainage, and slightly decreased oxygen saturation are expected findings post-thoracentesis and do not necessitate immediate action.

Correct Answer: A

Rationale: Pulmonary ventilation is the total volume of air moved in and out of the lungs per minute. It is calculated by multiplying tidal volume (amount of air inhaled or exhaled in one breath) by respiratory rate (number of breaths per minute). Therefore, the correct answer is A: Tidal volume + Respiratory rate. Choice B (Tidal volume + Vital capacity) is incorrect because vital capacity is the maximum amount of air that can be exhaled after a maximum inhalation, not a component of pulmonary ventilation. Choice C (Tidal volume + Residual volume) is incorrect because residual volume is the volume of air remaining in the lungs after a maximal exhalation and is not involved in ventilation. Choice D (Tidal volume + Inspiratory reserve volume) is incorrect because inspiratory reserve volume is the additional air that can be inhaled after a normal inhalation and is not part of pulmonary ventilation calculation.

Correct Answer: B

Rationale: The correct answer is A: Contact. Bovine tuberculosis is primarily transmitted through direct contact with infected cows, such as through inhalation of respiratory droplets or consumption of contaminated milk. It is less commonly transmitted through consumption of infected meat or contamination of water with infected urine. Contact with infected animals poses the highest risk for transmission due to the bacterium Mycobacterium bovis being present in respiratory secretions and excretions of infected cows.

Correct Answer: C

Rationale: The correct answer is C: An arterial blood gas (ABG) study. This is the most accurate measurement of the concentration of oxygen in the patient's blood because ABG provides direct measurement of oxygen levels, including partial pressure of oxygen (PaO2). It also gives information on other important parameters like pH and carbon dioxide levels. Arterial blood is the best representation of oxygenation status. Choice A (A capillary blood sample) may provide some information on oxygen saturation but is not as accurate as an ABG for measuring oxygen levels in the blood. Choice B (Pulse oximetry) measures oxygen saturation in peripheral blood and can give a quick estimate of oxygen levels, but it is not as accurate as an ABG for determining the actual oxygen concentration in the blood. Choice D (A complete blood count) does not provide direct information on oxygen levels in the blood, as it mainly focuses on the cellular components of blood such as red blood cells, white blood cells, and