Effects of Acetazolamide and CO2 Inhalation on Exercise-Induced Periodic Breathing in Heart Failure

The recruitment status of this study is unknown because the information has not been verified recently.
Verified August 2007 by Centro Cardiologico Monzino.
Recruitment status was  Recruiting
Information provided by:
Centro Cardiologico Monzino
ClinicalTrials.gov Identifier:
First received: August 16, 2007
Last updated: NA
Last verified: August 2007
History: No changes posted

To evaluate the effects of CO2 inhalation and acetazolamide treatment on exercise-induced periodic breathing in patients with chronic stable heart failure.

Patients will be given CO2 (2%) during a constant workload exercise. Patients will be also evaluated by maximal cardiopulmonary exercise test without and with acetazolamide acute and chronic treatment.

Condition Intervention Phase
Chronic Heart Failure
Drug: acetazolamide
Phase 4

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label

Resource links provided by NLM:

Further study details as provided by Centro Cardiologico Monzino:

Primary Outcome Measures:
  • Suppression of periodic breathing [ Time Frame: two days ]

Secondary Outcome Measures:
  • suppression of sleeping apnea [ Time Frame: two days ]

Estimated Enrollment: 20
Study Start Date: July 2007
Estimated Study Completion Date: August 2009
Intervention Details:
    Drug: acetazolamide
    i.v. 500 mg of acetazolamide for the acute study and 500 mg of acetazolamide p.o. t.i.d. for two days
    Other Name: Diamox

Ages Eligible for Study:   18 Years to 80 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • chronic heart failure in stable clinical condition
  • exercise-induced periodic breathing

Exclusion Criteria:

  • comorbidities
  • NYHA class IV
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00517426

Contact: Piergiuseppe Agostoni, MD, PhD +39.025800 ext 2299 piergiuseppe.agostoni@ccfm.it

Centro Cardiologico Monzino, University of Milan Recruiting
Milan, Italy, 20138
Contact: Piergiuseppe Agostoni, MD, PhD    +39.025800 ext 2299    piergiuseppe.agostoni@ccfm.it   
Sub-Investigator: Mauro Contini, MD         
Sponsors and Collaborators
Centro Cardiologico Monzino
Principal Investigator: Piergiuseppe Agostoni, MD, PhD Centro Cardiologico Monzino
  More Information

ClinicalTrials.gov Identifier: NCT00517426     History of Changes
Other Study ID Numbers: R77-CCM S79/407
Study First Received: August 16, 2007
Last Updated: August 16, 2007
Health Authority: Italy: Ministry of Health

Keywords provided by Centro Cardiologico Monzino:
heart failure,
periodic breathing,

Additional relevant MeSH terms:
Heart Failure
Cardiovascular Diseases
Heart Diseases
Carbonic Anhydrase Inhibitors
Cardiovascular Agents
Central Nervous System Agents
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Natriuretic Agents
Pharmacologic Actions
Physiological Effects of Drugs
Therapeutic Uses

ClinicalTrials.gov processed this record on November 27, 2015