Assessment of cardiopulmonary functional improvement after cardiac surgery using the inert gas rebreathing method

Assessment of cardiopulmonary functional improvement after cardiac surgery using the inert gas rebreathing method - Assessment of cardiopulmonary functional improvement after cardiac surgery using the inert gas rebreathing method

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000017111

Enrollment

Registered

2015-08-01

Start date

2015-09-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Mitral valve regurgitation

Interventions

Patients who undergo mitral valve repair for degenerative disease. Following cardiac/pulmonary/skeletal muscular assessment were performed pre- and post (2 weeks, 3 months, 6 months, 12 months) surge

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Patients who undergo mitral valve repair for degenerative disease. 2) Patients who can perform bicycle ergometer test

Exclusion criteria

Exclusion criteria: 1) Patients who is in atrial fibrillation 2) Patients who has more than moderate residual mitral regurgitation

Design outcomes

Primary

Measure	Time frame
1) Cardiac output during exercise using the inert gas rebreathing method 2) Mean mitral valve pressure gradient during exercise 3) Peak VO2 derived from cardiopulmonary exercise test	—

Countries

Japan

Contacts

Public ContactKiyoshi Doi

Kyoto Prefectural University of Medicine Department of Cardiovascular surgery

kdoi@koto.kpu-m.ac.jp075-251-5752

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026