Congestive heart failure is the fastest growing form of heart disease in the United States.
Drugs can help, but many times, patients don't know when they need them.
Now, a new device being studied could put patients in control. It's called the Heart Pod, and it measures fluid.
A wire is inserted into the heart and a very small can is used to extract the information. The wire and can are surgically implanted, and then the APDA device reads fluid levels, telling the patient how much medicine to take.
Doctors can then adjust the dose of the patients' water pills to alleviate the congestion before they get into trouble and before they end up in the emergency department or the hospital.