Rigid bronchoscopes are too large to allow parallel placement of other devices in the trachea; therefore the anesthesia apparatus is connected to the bronchoscope and the patient is ventilated through the bronchoscope.

That, coupled with many new discoveries at Mount Sinai (including significant advances in blood transfusions and the first endotracheal anesthesia apparatus), meant that Mount Sinai's pool of doctors and experts was in increasing demand.