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Sleep Diagnosis and Therapy

Sleep Diagnosis and Therapy

Official Publication of the American Sleep and Breathing Academy

Heart Failure Patients with SDB More Accurately Diagnosed with “Bedside” Device

September 3, 2014 by admin

 

A study presented at the recent ESC Congress in Barcelona, Spain, reported that after using ResMed’s SleepMinder™ for two weeks, 57% of patients were consistently above a threshold that would require treatment for their sleep disordered breathing (SDB) (AHIgreater-than or equal to 15). This rose to 74% in patients who were followed up for 12 months.

 

The study looked at use of the at-home, contactless, bedside SleepMinder™ device to diagnose SDB, the most common co-morbidity in patients with heart failure (HF). The study also assessed how SleepMinder, when used over two weeks, compared to a current gold-standard of diagnosis, a single night assessment via inpatient polysomnography (PSG).

 

“Sleep disordered breathing is the most common heart failure co-morbidity, yet the diagnosis is often missed,” said Professor Martin Cowie, Professor of Cardiology, Royal Brompton Hospital, London, UK and co-author of the study. ”This condition affects millions of heart failure patients across Europe and can lead to significantly worse outcomes if not correctly diagnosed and treated. This study showed that, by using a device that can gather longer-term data, we can offer a means of diagnosis that is both practical for patients, doctors and health services and may well be more accurate than existing techniques that require inpatient care. It is vital that cardiologists explore how they can help to establish more routine use of this technology in the heart failure patient pathway.”

 

SDB is typically diagnosed in patients with HF by calculating the Apnoea-Hypopnea Index (AHI), typically from a single overnight PSG study conducted in a hospital or specialist sleep centre. However, HF patients commonly experience volume load changes that can make AHI highly variable in this population over time. Mean AHI assessment, over a longer period is therefore likely to be more accurate.

 

SleepMinderTM is a non-contact, bedside, nocturnal respiratory monitor that can be placed next to a patient’s bed to collect data on SDB over longer periods. Two weeks represent a useful period for SDB assessment to be gathered. This study involved 39 adult patients with HF who were assessed over 12 months. Following two weeks of assessment, mean AHI was consistently above the treatment threshold for 57% of patients. This rose to 74% after 12 months of follow up.

 

These results can have significant implications for the routine diagnosis of this prevalent condition in HF.

SDB is the most common co-morbidity in HF, affecting between 50-75% of the 15 million HF patients in Europe.3,4,5 However, it remains underdiagnosed and one of the least recognised co-morbidities by cardiologists, despite being linked to worse outcomes including mortality, hospitalizations and quality of life.

Filed Under: Articles, Blog

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SleepDT Sleep Diagnosis and Therapy is a clinical Journal for allied Sleep Professionals, Neurologists, Psychiatrists, Pulmonologists, Primary Care Physicians, and other medical specialists. We also advocate on behalf of patient care in the field of Sleep Medicine

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