In Patients with Severe COPD and Hyperinflation, the Low, Flat

question 22

Multiple Choice

In patients with severe COPD and hyperinflation, the low, flat diaphragm causes inward movement of the lateral chest walls with inspiration. What is this called?

• A) Abdominal paradox
• B) Biot breathing
• C) Hoover sign
• D) Respiratory alternans

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Definitions:

Operating Leverage

A financial concept that measures the proportion of fixed costs to variable costs in a company's cost structure, affecting profitability with changes in sales volume.

Net Operating Income

The profit generated from a company's core business operations, excluding expenses and revenues from non-operational activities.

Contribution Format

A form of income statement that distinguishes costs by classifying them into variable and fixed sections, thereby focusing on the contribution margin.

Contribution Margin Ratio

A ratio that measures the difference between the sales and the variable costs of a product or service, as a percentage of sales.