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Health Professionals

>For Health Professionals >For GPs >Frequently Asked Health Questions
>Moderate to High Risk Elective Procedures

Cardiopulmonary Exercise Testing (CPX) has been used in clinical settings for a number of years. It helps to answer vital questions relating to exercise intolerance, exercise limitation and patient management. CPX essentially quantifies the capacity of the heart and lungs during exercise. Because outcome following surgery is related to cardiovascular capacity and the ability to maintain increased performance post-operatively, CPX is the ideal predictive tool. CPX has also been used in respiratory and cardiac rehabilitation programmes. CPX testing is non-invasive, well tolerated by patients and very cost effective.

When is CPX testing indicated?

  • For patients with cardio-pulmonary limitation who require pre-operative objective assessment to determine cardiopulmonary reserve prior to moderate to high risk elective procedures
  • To assist medical teams to differentiate between cardiac and pulmonary limitation, for example, as a cause of exercise induced dyspnea
  • To objectively evaluate symptomatic patients with respiratory disease
  • To triage high risk patients presenting with heart failure
  • To objectively evaluate a patient’s response to specific therapeutic interventions such as changes in cardiac and respiratory medications and alterations to pacemaker settings
  • To help design and manage cardiac and  respiratory rehabilitation programmes
  • As a screening test for the presence of early cardiopulmonary disease


What data is measured throughout the test duration?

Cardiovascular measurements

Respiratory measurements

  • Resting lung spirometery testing
  • Exercise flow volume loop recordings
  • Resting and exercise pulse oximetery monitoring
  • Respiratory rate (RR)
  • Tidal volume (Vt)
  • Minute ventilation (VE)
  • Carbon dioxide (VC02) production
  • Ventilatory equivalents (VEV02 and VEVC02)
  • End tidal oxygen and carbon dioxide tensions
  • Breathing reserve (BR)
  • Breathing efficiency 

To refer a patient

Should you wish to refer a patient for CPX testing please complete the request form (>>download PDF) and fax it over to us at CPX Ltd. on 0207 636 9237

For all other enquiries please contact us by email (>>click here to view the contact page)
or telephone 0207 636 9155

See our Links Page for more resources on pre-operative assessment and heart failure assessment (click here to view the links page).

 

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