RTE Claire Byrne Live viewers heard passengers who travelled through Dublin Airport over the weekend speak of their stressful experiences with the queueing chaos.
Over 1,000 passengers missed flights on Sunday as lines of people waited outside the Terminal buildings.
On Monday's show, Claire spoke to Deborah from Vermont, whose husband was in Dublin Airport on Saturday travelling home to the States.
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Her husband has epilepsy and suffered a seizure after missing his flight due to the lengthy queues for security.
Deborah said: "Stress can trigger epileptic seizures. He wears a medical alert bracelet and carries medication with him, but to have somebody queue for security for as long as he did.
"Dehydration can cause it too. So when you think about it, people have to drop their bags, get boarding passes, return rental cars, it was such a scene.
"It was difficult for them to even figure out which queue to join.
"He had finally gotten through security but had not made his flight. He had found out he hadn't made his flight.
"We were speaking on the phone. There was a group of people waiting on baggage and to be rebooked, they were already through security but not through immigration."
Deborah then said she heard her husband saying he was going to have a seizure.
"I was very concerned. Then I could hear him having a seizure. His language gets very garbled, he tries to speak but he can't, it was very concerning.
"I was trying to talk him through it."
Her husband was rebooked on a flight for Sunday and thankfully made it home.
"He went back very, very early (on Sunday) and was able to board an earlier flight," Deborah said.
"He has family from Ireland so they were able to get him from the airport but he had to make it out, post-seizure, by himself.
"Luckily they came in and took care of him for the evening and he was well enough to go back the next day and do this all again."
Dublin Airport Authority spokesman Kevin Cullinane has said the weekend's long wait times were due to the shortage of staff
He added the airport has been "aggressively trying to recruit an additional 300 security officers to man those security lanes".
Mr Cullinane said on RTE's Morning Ireland: "Yesterday when we opened security in Terminals 1 and 2, we clearly didn’t have enough security lanes open due to resourcing challenges.
"And at the moment any absenteeism impacts on our ability to operate lanes. So we’ve been augmenting our frontline security officers with staffing task force of over 450 back-office personnel."
He said that the "sheer presentation of passengers" arriving at the airport from 4.30am overwhelmed the system leading to the long wait times.
"A lot of people now arrive at the airport in the small hours of the morning trying to get ahead of the process. We had a queue building on from very early on from 3 in the morning," he said.
"And as these passengers tried to present themselves that first very busy wave of departures more and more people were joining queues.
"We have had to have very controlled access to the terminal by queuing people outside. We were clearly unable to process the volume of passengers that morning."
Read more: Dublin Airport passengers detail delays as queues line up outside at 4am
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