What is the definition of "secondary drowning"?

Secondary drowning refers to a condition where an individual experiences respiratory distress after inhaling water, but it can occur hours to days after the initial incident. This delayed reaction happens when water enters the lungs and causes inflammation, leading to difficulties in breathing and, potentially, other serious complications. This condition emphasizes the importance of monitoring anyone who has inhaled water, even if they initially seem fine, as symptoms may not manifest immediately.

The other options address concepts that are not consistent with the medical definition of secondary drowning. Immediate drowning upon submersion is related to the primary occurrence of drowning itself rather than the secondary effects. Long-term water retention and injuries from rough water conditions are unrelated issues that do not describe the specific respiratory distress pattern associated with secondary drowning. Understanding these nuances is essential for recognizing the risks and symptoms associated with water-related incidents.