AEMCA Practice Exam

Type 1 decompression sickness primarily affects which body systems?

1. Ear, Sinus, Skin, and Muscles

2. Liver, Kidneys, Heart, and Lungs

3. Brain, Eyes, Heart, and Lungs

4. Skin, Nervous, Endocrine, and Circulatory

The correct answer is: Ear, Sinus, Skin, and Muscles

Type 1 decompression sickness, commonly known as "the bends," is primarily characterized by its effects on various body systems, particularly those that contain nitrogen when a diver ascends too quickly. The correct answer emphasizes the areas most vulnerable to nitrogen bubbles forming and causing symptoms. The ear, sinus, skin, and muscles are directly impacted due to the presence of gas bubbles in these tissues. In the case of the ear and sinuses, symptoms can manifest as pain or discomfort due to trapped gas and pressure changes. Skin manifestations can include rashes or mottling as a result of nitrogen bubbles. In muscle tissues, individuals may experience pain or discomfort known as "muscle cramps." This understanding aligns with the physiological mechanisms of decompression sickness, where nitrogen, which is absorbed at greater depths due to increased pressure, forms bubbles during rapid ascent, primarily affecting these specific body systems. The emphasis on these systems highlights the unique nature of Type 1 decompression sickness compared to other forms which may impact vital organs more severely.