Abnormal bronchus physiology Bronchoconstriction 2021-04-25T23:21:45Z Occasionally in the medical literature, the word bronchospasm is interpreted to mean a more sudden narrowing than bronchoconstriction, but this usage is inconsistent and in everyday practice the terms are used as synonyms. We treat the terms as synonyms and recommend using HPO modifiers to denote acuteness or chronicity if needed. Bronchospasm Bronchial constriction HP:0025428 Tightening of smooth muscle surrounding the bronchi and bronchioles with consequent wheezing and shortness of breath. Constriction of the bronchi