Which statement correctly characterizes Macintosh and Miller blades?

• A. Macintosh blade is curved and Miller blade is straight.
• B. Macintosh blade is straight and Miller blade is curved.
• C. Both blades are curved.
• D. Neither blade is curved.

Answer: (A)

The main idea is the shapes of the blades and how that shape guides how you lift the epiglottis to expose the vocal cords. The Macintosh blade is curved, and its technique relies on placing the tip in the vallecula and lifting upward and forward to indirectly elevate the epiglottis and view the glottic opening. The Miller blade is straight, and you insert it with the tip under the epiglottis to lift it directly. This combination—the Macintosh being curved and the Miller being straight—correctly describes their traditional designs and usage. The other descriptions don’t match the actual blade shapes.