Heart-failure monitoring technology provides early warning of worsening condition

CardioMEMS device checks for changes in the pulmonary artery and wirelessly sends data to health care providers.

Living with advanced heart failure can be every bit as scary as it sounds. It means following a strict regimen that includes medication and regularly monitoring for the slightest signs that the condition is getting worse.

Heart failure patients need to check their weight daily and report even slight changes to their health care providers. Fluid intake must be regulated carefully. Even when patients follow strict guidelines, symptoms of worsening heart failure may show up only after the damage has been done.

Shortness of breath, feeling tired, weakness in the legs, swelling in the abdomen and lower appendages — all are signs that a heart failure patient needs to contact their doctor or, even worse, get to an emergency room right away, according to Kelly C. McCants, M.D., advanced heart failure physician with Norton Heart Specialists.

“But the problem is, the symptoms mean that possible damage could have already impacted the heart muscle,” Dr. McCants said.

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Heart Failure Monitoring That Provides an Early Warning

New heart-failure monitoring technology at Norton Heart & Vascular Institute is providing new insight into subtle changes that could signal worsening heart failure.

Implanted in the pulmonary artery with no batteries or electrical leads, the CariodMEMS device uses the natural phenomena of resonant frequency to detect changes in blood flow before symptoms become a problem.

Once a day (or as often as your provider directs), you’ll lie still for 60 seconds on a pillow at home that contains another device that reads the resonant frequency from the CardioMEMS. Pressure changes in the pulmonary artery will affect the reading.

The data is transmitted securely to Dr. McCants or other providers at Norton Heart & Vascular Institute who can manage medications or provide direction on how to lower or maintain pressure.

“This technology is saving patients’ lives,” Dr. McCants said. “Being able to know a patient’s fluid level before they start to exhibit and feel symptoms is impacting their overall health.”

The more Dr. McCants and the providers at the Norton Heart & Vascular Institute Advanced Heart Failure Program team can prevent a patient’s condition from requiring an emergency trip to the hospital, the better.

“Research shows that each hospitalization for heart failure, someone’s chance for survival decreases by as much as 30 percent,” Dr. McCants said.

The CardioMEMS heart-failure monitoring implant is placed inside the pulmonary artery during a minimally invasive procedure. After what is usually an overnight stay, the patient goes home and usually can return to normal activity within a few days.

At the Norton Heart & Vascular Institute, providers will monitor your CardioMEMS readings.

“Each patient has a target number, and if they are above that number, we can react with instructions,” Dr. McCants said.

Dr. McCants reminds his patients that the device only works in conjunction with lifestyle modifications and continued communication with their provider.


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