High array values?

For particular arrays, I seem to be getting abnormally large numbers. For instance, for the plethysmographic trace (which I assume to be what MDC_PULS_OXIM_PLETH is for), I appear to be getting values around 30,000. And, for whatever DC_PRESS_BLD is, I get values around 500. Since all other values are so low, I have to ask. Is this intentional, I'm just uneducated in terms of medical data, or is this too large?