What does my "FCV Score" mean?

FCV stands for Forced Cough Vocalization – in other words, an intentional cough. This intentional cough is the biomarker that Raisonance technology captures, digitizes, and analyzes using artificial intelligence processed in the Microsoft Azure cloud. 

FCV Sentinel measures changes in a person’s FCV and provides a score to the user each time they use the product. This score represents how much change FCV Sentinel has detected.

To do this, we first have users create a baseline. This is a collection of many coughs which represents a person’s individual FCV profile. This profile is a multi-dimensional imprint of a person’s respiratory system, and is as unique to each person as their fingerprint. 

Once the baseline is established, FCV Sentinel users can cough whenever they’d like to check their FCV status. Each new cough is compared to that person’s baseline, and FCV Sentinel generates a score for each new cough. This score is a measurement of how similar – or different – a person’s current cough is compared to their baseline. 

Everyone’s FCV Scores vary a little bit throughout the day – that is completely normal. Using FCV Sentinel will help you see the short and long term trends that reflect your overall respiratory status.  

The primary defense used by our bodies’ respiratory system is the secretion and clearance of mucus. Over time, humans evolved specialized methods to protect itself from airborne environmental hazards, pathogens, viruses, and the like. Irritation of the respiratory tract causes changes in blood flow, mucus secretion, and diameter of a person’s airway.

Toxins can interact with secretions directly and can change the nature of the mucus, while other nerves and sensory receptors in the body react to lung irritation or pulmonary (lung) inflammation. This inflammation changes many aspects of a person’s cough. Sometimes these changes are identified by skilled medial professionals simply by listening to a person’s cough. But often these changes are so subtle that sophisticated artificial intelligence is better suited to identifying and scoring the severity of those changes. Each of these responses to irritants changes the frequency and energy pattern of a person’s FCV. Repeated or prolonged exposures to irritating gases, vapors, pathogens, and fumes can lead to the development of irritant-induced changes in the FCV.