An 80-year-old female. has been independently living in her apartment. she has a history of diabetes, hypertension, asthma, and obesity. over the summer, she noticed increased periods of shortness of breath with activity. she also noted a 10 pound weight gain over a 2 week period with a progressive cough. she went to the clinic and had a series of tests ordered. ultimately, she was diagnosed with acute congestive heart failure and was hospitalized in order to manage the heart failure. what body processes or systems are being affected by this patient's heart failure? in what way does the heart failure impact those processes or systems?