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Does secondary drowning exist?

What people refer to as secondary drowning is better described as a secondary injury from a near-drowning. This injury most often happens when water gets into your airway.

For example, inhaling water before your airway clamps shut from a laryngeal spasm can be a big concern. Too much water can cause lung damage and breathing problems that become serious six to 12 hours later.

One of the most serious conditions that you can get from ingesting water into your lungs is pulmonary edema. That’s when fluid starts accumulating in your lungs, causing swelling. “Your lungs stop functioning correctly — and this can be a serious medical emergency,” says Dr. Milk.

Pulmonary edema causes you to have trouble breathing or experience frightening sensations like shortness of breath and chest tightness. “Liquid, or fluid, is actually in your airway,” he continues. “You’re kind of drowning in your own fluid, even though you’re not in the water.”

Signs and symptoms of dry drowning

The signs and symptoms of dry drowning are the same as the ones you experience when drowning.

So, if you come up spluttering after a cannonball, you’re not necessarily at risk of suddenly drowning the next day.

“However, if you do have a near-drowning incident, symptoms can show up after you’ve left the water,” Dr. Grover says.

In other words, you’ll cough a lot and may think that any water you inhaled is gone — but 12 hours later, you might start to experience breathing problems because your lungs are swelling from water.

This delayed reaction is why if you were struggling underwater and unable to breathe, you should get checked out by a medical expert to make sure your lungs are clear and undamaged.

But you’ll likely know if something is wrong soon after you leave the water, as the signs of pulmonary edema emerge quickly.

If you experience any of these warning signs after a water incident, or sense that something isn’t right, see a doctor. Early symptoms include:

More serious symptoms point to an infection or vascular breakdown. These signs include:

  • Change of skin color.

  • High fever. This can occur even 24 hours after the incident.

  • Loss of consciousness.

  • Vomiting or foaming at your mouth. This is caused by edema, or swelling, of the lungs.

The progression of these symptoms depends on your exposure to water. “Some people will progress to the coughing and the mild shortness of breath phase and never go farther,” Dr. Milk states. “Some people will start there and progress further.”

The symptom progression — and symptoms that emerge — depend on your personal health history, he adds. “If you have your history of asthma or lung disease, if you’re older and have a smoking history, you may be more susceptible to go down that pathway faster by comparison to somebody else.”

What to do if you notice these signs?

“If you’ve had exposure to water and it’s a near-drowning and you develop these symptoms later after seeming to be OK, these are significant warning signs and you should be seen,” stresses Dr. Milk.

People who were submerged underwater, especially kids, should be examined and monitored by a physician, Dr. Grover adds. “As a mother and an ER physician, I say better safe than sorry.”

How to prevent dry drowning and be safe while swimming

Dry drowning may not be a medical term, but you should take any near-drowning incident seriously, Dr. Grover says.

Tragically, drowning and near-drowning events are leading causes of death in children. And you can drown in just a few minutes, even in water as shallow as an inch.

How can you prevent these tragic incidents?

  • Supervision: Always watch kids closely when they’re in or near the water.

  • Have a dedicated watcher: When gathering in large groups, assign one adult to watch one or two specific children, so someone is always looking out for kids. If you’re swimming in areas without a lifeguard, don’t do so alone. Make sure someone knows where you are and is keeping an eye out.

  • Install perimeter protection: Install fences and gates around pools so nobody sneaks in unattended.

  • Pay attention to safety warnings. If a beach or pool has “No swimming!” signs, take that seriously, even if things look safe. There’s usually a good reason why you shouldn’t take a dip.

  • Buy safety gear: Make sure kids wear life jackets around the water.

  • Know first aid: Learn basic swimming skills and cardiopulmonary resuscitation (CPR).

At the end of the day, if you or your kiddo inhaled some water while swimming or got dunked in the pool during water tag, there’s no need to worry, Dr. Grover reassures. But drowning and near-drowning are always a concern — meaning you can never be too safe by the water.

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