Which type of pulmonary disease requires more force to expire a volume of air?

Obstructive

Communicable

Acute

Restrictive

Answer and Explanation

The Correct Answer is A

A. Obstructive: Obstructive pulmonary disease is characterized by increased resistance in the airways, making it more difficult to expire air. Conditions such as asthma and chronic obstructive pulmonary disease (COPD) lead to airflow limitation, requiring greater force to expel air from the lungs.

B. Communicable: Communicable pulmonary diseases refer to infections that can be transmitted from person to person, such as tuberculosis or influenza. This classification does not directly relate to the mechanics of airflow and does not specifically require more force to expire air.

C. Acute: Acute pulmonary disease describes a sudden onset of symptoms, which can be caused by various conditions (e.g., pneumonia or pulmonary embolism). The term "acute" does not inherently indicate a need for increased expiratory force and can encompass both obstructive and restrictive patterns.

D. Restrictive: Restrictive pulmonary disease involves reduced lung volume and compliance, making it difficult to expand the lungs fully during inspiration. While patients may struggle to inhale adequately, they typically do not require increased force to expire air, as expiratory airflow is usually not obstructed in the same manner as in obstructive diseases.

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Correct Answer is C

Explanation

A. Fungus: While fungal infections can cause infective endocarditis, they are much less common compared to bacterial infections. Fungal endocarditis typically occurs in immunocompromised individuals or those with specific risk factors.

B. Virus: Viral infections can affect the heart, but they are not a common cause of infective endocarditis. Most cases of endocarditis are associated with bacterial infections rather than viral ones.

C. Bacterium: The most common cause of infective endocarditis is bacterial infection. Bacteria, particularly Staphylococcus aureus, Streptococcus viridans, and Enterococcus, are frequently implicated in this condition. These bacteria can enter the bloodstream and adhere to heart valves or damaged cardiac tissue, leading to infection and inflammation.

D. Rickettsiae: Rickettsial infections are caused by a specific type of bacteria that are typically transmitted through arthropod vectors, such as ticks. While they can cause various illnesses, they are not a common cause of infective endocarditis.

A. Increase peripheral resistance B. Decrease in cardiac output C. Both increased cardiac output and peripheral resistance D. Increased cardiac output

Correct Answer is B

Explanation

A. Increase peripheral resistance: An increase in peripheral resistance contributes to hypertension by raising the pressure in the arteries. This condition often results from vasoconstriction or structural changes in the blood vessels, leading to higher overall blood pressure.

B. Decrease in cardiac output: A decrease in cardiac output typically does not cause hypertension. In fact, low cardiac output may lead to hypotension (low blood pressure) since there is less blood being pumped into the circulatory system. This option is the exception when discussing physiological causes of hypertension.

C. Both increased cardiac output and peripheral resistance: Both increased cardiac output and peripheral resistance can lead to hypertension. An increase in either factor can elevate blood pressure, and their combined effect can significantly contribute to the development of hypertension.

D. Increased cardiac output: Increased cardiac output raises blood pressure by delivering more blood to the arteries with each heartbeat. This can occur due to various factors such as increased fluid volume, increased heart rate, or heightened contractility of the heart.

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Which type of pulmonary disease requires more force to expire a volume of air?

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Naxlex Comprehensive Predictor Exams

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Correct Answer is C

Explanation

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Correct Answer is B

Explanation

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