ACCS Respiratory Practice Exam 2026 – Complete Study Guide

Understanding normal breathing patterns involves recognizing what a normal rate, depth, and rhythm look like. Eupnea describes a normal respiratory pattern: regular rate, adequate depth, and even rhythm that allows gas exchange to occur without extra effort. In adults, this usually means about 12 to 20 breaths per minute with steady, unlabored breathing. This differentiates from tachypnea (rapid breathing), bradypnea (slow breathing), and apnea (no breathing). So, for normal rate, depth, and rhythm, the term is eupnea.