As a subject matter expert in emergency medicine, I can provide you with an accurate explanation of dry drowning.

Dry drowning is a term that has been used to describe a situation where a person experiences respiratory distress or failure after being in or near water, but without having inhaled water into the lungs. This can occur hours after the exposure to water, which is why it can be quite surprising and alarming for the caregivers. The actual medical term for this condition is secondary drowning. It happens when the water that has been inhaled into the airways begins to disrupt the oxygen exchange in the lungs, leading to a gradual buildup of fluid and potentially causing the lungs to collapse.

Here's the translation in Chinese:

作为紧急医学领域的专家，我可以为您提供关于干性溺水的准确解释。

干性溺水是一个用来描述一个人在接触水或靠近水后经历呼吸窘迫或衰竭的情况，但没有吸入肺部水分。这种情况可能发生在接触水后几小时，这就是为什么对护理人员来说可能非常出人意料和令人担忧。这种情况的实际医学术语是继发性溺水。当吸入到气道中的水开始干扰肺部的氧气交换时，就会发生这种情况，导致液体逐渐积聚，并可能导致肺部塌陷。

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When this happens, the body's response is to send fluid to the lungs to try to open up the vocal cords. But this can lead to excess fluid in the lungs �� a condition called pulmonary edema. Symptoms of dry drowning usually start within an hour after a person is submerged in water, Patrick said.read more >>