PADI Divemaster Certification Practice Exam

What serious ear injury can result from excessive equalization techniques?

1. Middle ear barotrauma

2. Round window rupture

3. Outer ear canal obstruction

4. Inner ear pressure change

The correct answer is: Round window rupture

Excessive equalization techniques, which are intended to balance pressure in the ears while diving, can indeed lead to serious injuries. Specifically, a round window rupture represents a critical injury that can occur when there is excessive stress placed on the inner ear structures during attempts to equalize pressure. The round window is a membranous structure located in the inner ear, and it plays a crucial role in the mechanics of hearing by allowing fluid movement within the cochlea. If the pressure difference across the round window becomes too extreme due to aggressive equalization maneuvers, it can lead to a rupture. This rupture can have serious consequences such as hearing loss, balance disorders, and an increased risk of inner ear infections. While other choices also pertain to ear problems related to pressure changes, they do not specifically address the more severe consequences associated with excessive equalization techniques in the same way that a round window rupture does. Understanding this risk highlights the importance of equalizing properly and recognizing when to avoid excessive techniques during a dive, prioritizing safety and health of the ears.