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RESPIRATORY FUNCTION

Respiratory Inductive Plethysmography

Respiratory Inductive plethysmography (RIP) is a non-invasive technic widely used to monitor respiratory function in humans and animals. The principle is to record trunk volume variations using flexible inductive sensors wound around the trunk in a way to measure cross-sectional variations.
 
The DECRO jacket contains two inductive sensors that goes around the thorax and the abdomen when the animal wears the garment. The repeatable placement of the sensors is guaranteed by two holes for the front paws.
 
As illustrated below, DECRO RIP provides volume variations which give access to different respiratory parameters.

Automatic event detection :

  • Inspiration end
  • Expiration end
  • Respiratory cycles

Physiological parameters calculated :

  • Respiratory Cycle Time (ms)
  • Respiratory rate (bpm)
  • Tidal volume (u.a)
  • Inspiration – Expiration time (ms)
  • Minute Volume (u.a / s)

Examples of respiratory signals

Respiratory data recorded on an animal at rest

Respiratory signals with cycles detection at rest

The respiratory signal above is recorded during a resting phase from an adult Sprague Dawley male rat, dressed with DECRO jacket. The figure displays from top to bottom the respiratory cycles, instantaneous respiratory rate and the activity level over 20 secondes.

Respiratory data recorded on an animal at rest with sniffing

An example of respiratory volume variation containing sniff. Measured with inductive plethysmography

The respiratory and sniffing signals above are recorded during a resting phase from an adult Sprague Dawley male rat, dressed with the DECRO jacket.