Hi
@Nancy5972 ,
There is a difference between a traumatic pneumothorax or pneumothorax as a surgical complication as your husband and daughter (respectively) had, and a spontaneous pneumothorax.
Out of curiosity, what reason did the provider give for not clearing your husband to dive? For someone with a history of traumatic pneumothorax, we'd obtain chest imaging and look for scarring in the affected lung that could lead to air trapping. If there was no evidence of air trapping on imaging, we'd typically clear the person to dive provided they were otherwise healthy.
With your daughter, it might depend on exactly what caused her lung to collapse, but diving would not be out of the question for her, provided there's no evidence of air trapping on imaging and she is otherwise healthy.
Spontaneous pneumothorax has historically been a hard "no" for diving, but even that has loosened up a bit over the years and some providers are clearing divers on a case-by-case basis.
Can you share exactly where you are in Canada? Please feel free to DM if you don't want to post publicly.
Best regards,
DDM