This is Dr Basu, experienced Internal Medicine Specialist.
I am here to address your concerns and provide great service.
This is known as dependent edema.
The fluid collects i the abdomen and scrotum as the hydrostatic pressure increased ni the blood vessels due to the fluid overload, and decrease ni oncotic pressure from low serum proteins.
Proteins are lost through kidneys and also less produced due to liver disease.
Hence, his liver and kidney disease are worsening.
This may not be safe for long flights due to the risks of heart failure, or respiratory failure.
Hence a clinical evaluation and a medical clearance should be obtained from his doctor first.
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