"Ortoli Syndrome" is the name of a fictional genetic disease that causes erratic activity of the adrenal glands, which can lead to abrupt heart attacks. There is no such disease in existence and House mentioned it solely to have a fake diagnosis in order to be able to send a patient home.
The "Tiburon swab technique" that is used to detect it is equally fictitious. El Tiburón is the Spanish word for "shark".
He prescribed "Nabasynth", another fictional creation by House to send the patient home. The "drug" was actually breath mints from a container House filched from Cameron. House apparently later has the pharmacy dummy-up a pharmacy label for the placebo and repackaged them to trick the patient.