I think proximate means here appropriate, adequate.

Synonyms
1. 1.1 Closest in space or time.
‘the failure of the proximate military power to lend assistance’

https://en.oxforddictionaries.com/definition/proximate

*Adequate* inspiratory flows and durations should be used, triggering sensitivity should be adjusted to prevent autocycling, and a mechanism should be available to limit inspiratory time and avoid I:E ratio inversion.

http://erj.ersjournals.com/content/17/2/259

All-age ICU ventilators demonstrated huge variations in leak compensation performance during both invasive and noninvasive ventilation. Ventilator performance, patient size, and leak volume are all important determinants of *appropriate* triggering and cycling of breaths.

http://rc.rcjournal.com/content/62/1/22

I've entered low confidence because I don't know if the Romanian is grammatically correct. However, I think the meaning of adequate is right.