Scanning electron microscope study of the lung in drowning

Area of Science:

• Pulmonology
• Pathology
• Microscopy

Background:

• Chronic pulmonary emphysema presents diagnostic challenges in post-mortem lung analysis.
• Previous studies utilized laboratory animals to investigate lung pathology.

Purpose of the Study:

• To evaluate the efficacy of scanning electron microscopy (SEM) in diagnosing drowning and chronic pulmonary emphysema in human lung tissue.
• To compare SEM findings in human lungs with previous animal study results.

Main Methods:

• Utilized scanning electron microscopy (SEM) to examine human drowned lungs and control lungs.
• Compared findings with results from a prior study involving laboratory animals.

Main Results:

• SEM facilitated straightforward diagnosis of chronic pulmonary emphysema, even in autoptic material up to 48 hours post-mortem.
• Analogous results were observed between human and animal studies in the absence of emphysema.
• Diagnosing drowning proved difficult in lungs affected by chronic emphysema.

Conclusions:

• SEM is a valuable tool for diagnosing chronic pulmonary emphysema in post-mortem lung samples.
• The presence of chronic emphysema complicates the SEM-based diagnosis of drowning.