The study is an investigator-initiated, prospective cohort trial. The trial aims to evaluate ReDS Pro System V2.7 and ReDS ICU in patients with heart failure (HF).

The study is an investigator-initiated, prospective cohort trial. The trial aims to evaluate ReDS Pro System V2.7 and ReDS ICU in patients with heart failure (HF). The overall purposes are:

• to evaluate the ReDS efficacy measurements of lung fluid compared to pulmonary artery pressure guided therapy with CardioMEMS in out-patients with HF.
• to describe the feasibility of ReDS ICU in patients admitted to an ICU with HF

For the out-patient part, the patients will be recruited from the outpatient clinic at Rigshospitalet. The patient must be at least 18 years, have a history of chronic HF, and already monitored using CardioMEMS and must not fulfill any of the exclusion criteria.

For the ICU part, the patients will be recruited at the ICU department at the Heart Center at Rigshospitalet. The patient must be at least 18 years, intubated, and unconscious or sedated (Glasgow Coma Score <8), and already monitored using Swan-Ganz and arterial catherization and must not fulfill any of the exclusion criteria.

Inclusion Criteria:

ICU part:

• at least 18 years of age
• hospitalized in ICU setting at Rigshospitalet
• intubated
• unconscious or sedated (Glasgow Coma Score <8)
• monitored using Swan-Ganz and arterial catherization.

Out-patient part:

• at least 18 years of age
• history of Chronic heart failure > 3 months
• CardioMEMS

Exclusion Criteria:

ICU part:

• pacemaker or ICD on the right side
• congenital heart malformations or intra-thoracic mass that would affect the right lung anatomy (e.g. dextrocardia, lung carcinoma)
• wounds, burns, healing tissue, skin infection or recent skin graft or flap where the sensors should be attached to the skin
• habitus is out of range due to one or more of the following
• height less than 155 cm or higher than 195 cm
• estimated BMI of less than 22 or more than 36
• standard active therapy has been stopped as the patient is inevitably dying.

Out-patient part:

• pacemaker or ICD on the right side
• congenital heart malformations or intra-thoracic mass that would affect the right lung anatomy (e.g. dextrocardia, lung carcinoma)
• wounds, burns, healing tissue, skin infection or recent skin graft or flap where the sensors should be attached to the skin
• habitus is out of range due to one or more of the following Height less than 155 cm or higher than 195 cm BMI of less than 22 or more than 38 For BMI 36 to 38, chest size ruler should be 39 or less
• cancer or other severe non-cardiac disease with estimated life expectancy less than 1 year
• planned hospitalization for ICD, pacemaker, lung or heart surgery including heart transplantation during the study period.

ICU part:

Acute heart failure patients with Swan-Ganz catheter and an arterial catheter.

Outpatient part:

Chronic heart failure patients with CardioMEMS.

Data is planned to be available upon reasonable request via the Principal Investigator pending final, complete publication of the study.

Access and final IPD criteria is pending final, complete publication of the study.

Access to trial IPD can be requested by qualified researchers engaging in independent scientific research, and will be provided following review and approval of a research proposal and Statistical Analysis Plan (SAP) and execution of a Data Sharing Agreement (DSA)