<prompt> Obstruction in pulmonary stenosis may occur at the following sites -SupravalvularValvularSubvalvularAll of the above  <response>: Ans. is d i.e., All of the above o Anatomically, Pulmonary stenosis may be located at : 1. Valvular level 2. Subvalvular level : also called infundibular pulmonic stenosis. 3. Supra valvular level : this is uncommon and refers to stenosis above the valve. 