“Floribama Shore” star Kirk Medas is in a hospital bed in the intensive care unit and he needs a machine to breathe.

Nilsa Prowant, who starred alongside Kirk on the canceled MTV show, just shared a health update on her good friend Kirk … and it doesn’t sound good.

Kirk’s in the ICU fighting necrotizing pancreatitis, Nilsa says … and he’s been there for nearly two weeks and is now sedated and using a ventilator to breathe.

Nilsa says the family is crowdsourcing to help pay Kirk’s mounting medical bills because he apparently did not have health insurance … and she says all the money raised will go towards medical bills and rehab.

She says she’s been down to Miami to see Kirk in the ICU … and it was emotional for her seeing him on a ventilator.