Which technique can increase intrabolus pressure during a swallow?

The correct answer is the Effortful swallow maneuver, which is designed specifically to increase the force and effectiveness of the swallow by enhancing muscle activity in the swallowing mechanism. This technique encourages individuals to exert more effort while swallowing, which can lead to an increase in intrabolus pressure. The increased pressure is beneficial as it helps to ensure that the bolus moves efficiently through the pharynx and into the esophagus, ultimately reducing the risk of aspiration and aiding in safe swallowing.

In contrast, while other options may have their own therapeutic benefits, they do not specifically target the increase of intrabolus pressure in the same way. The Mendelsohn maneuver is primarily aimed at improving the coordination and timing of the swallow rather than directly increasing pressure. The tongue tether maneuver focuses on stabilizing the position of the tongue but may not necessarily enhance pressure. The breath-holding with Valsalva maneuver is a technique often used in different contexts, notably for strengthening respiratory control, but does not have a direct relationship with increasing intrabolus pressure during swallowing.