VQm Pulmonary Health Monitor™


VQm Pulmonary Health MonitorRostrum’sVQm Pulmonary Health Monitor™” is a novel device that aims to provide clinicians with physiological insight into the effects of changes in lung mechanics on Ventilation-Perfusion (V/Q) matching.

The VQm PHM is being developed with the intention to enable physicians to improve patient’s cardiopulmonary health by measuring the following physiological parameters:  

  • Shunt fraction (Qs/Qt) —  the fraction of total blood flowing through the lungs which does not participate in gas exchange (reported as % of total flow, or as L/min). Shunt fraction is often increased in ARDS.
  • Dead space — ­­the volume of inspired air which does not participate in gas exchange (reported as % of tidal volume, or in L). Dead space is also increased in ARDS, particularly if ventilator settings are causing overdistention of alveoli.
  • Pulmonary blood flow (PBF) — the volume of blood per minute which is participating in gas exchange (L/min). PBF, when combined with shunt fraction, is the overall cardiac output of a patient. These measurements could show the effect of changing intrathoracic pressures on heart function.
  • Functional Residual Capacity (FRC) — the volume of air remaining in the lungs at the end of normal expiration (L). Changes in FRC can signal the progression of ARDS and effectiveness of ventilator management.

ATTENTION: The VQm PHM(™) is not currently available for sale.  Any descriptions of future functionality are for informational purposes only and reflect current product direction.  Availability and timing remain at Rostrum Medical’s discretion, are subject to change without notice, and are subject to applicable regulatory clearances/approvals.