The Compendium of Caraka 6.17.51

6.17.51

ūrdhvaśvāse &prakupite hyadhaḥśvāso nirudhyate/
mudhyatastāmyataścordhvaṃ śvāsastasyaiva hantyasūn//
ityūrdhvaśvāsaḥ/
yastu śvasiti vicchinnaṃ sarvaprāṇena pīḍitaḥ/
na vā śvasiti duḥkhārto marmacchedarugarditaḥ//

when the upward breath is aggravated, the downward breath is indeed arrested;
as he faints and swoons, that upward breath (ūrdhvaśvāsa) destroys his life.
Thus ends [the description of] ūrdhvaśvāsa.
He who breathes interruptedly, tormented in all his vital breath,
or does not breathe, stricken with distress, tormented by pain as if cutting his vital organs,