I am HOH and I am having problems with my college. They are insistent that there is no sound loss when using the 'learning'(double)stethoscopes as opposed to a regular stethoscope. I bought myself a cardiology model and I can hear not great but good enough with it. For testing situations my college insists that I have to use a cheap model teaching stethoscope. I can not hear at all from it, other than if I tap my finger on it really hard. They are trying to say that accommodations can't be made because they can't verify if I am getting my vitals correct. My two questions are first-does anyone know of any articles or research on the sound loss with a learning vs. regular stethoscope. Second-what are accommodations that I can suggest so that they can verify I can take blood pressures and apical pulses.