Kent Hutchins was 4000m above sea level when he collapsed.
The Hastings man's trek to Everest Base Camp was cut short as he was stricken with severe viral gastroenteritis, or stomach flu.
A sherpa guide carried him 200m to the rescue helicopter's landing site, and he was airlifted to a Kathmandu hospital.
He spent three days recovering before he travelled back to New Zealand, just one day before a magnitude 7.8 earthquake ravaged the country - flattening buildings and killing more than 8000 people.
If he hadn't fallen ill, he would have been making his descent from Everest Base Camp at the time the quake hit.