Network protocols that use aggressive retransmissions to compensate for packet loss due to congestion can increase congestion, even after the initial load has been reduced to a level that would not normally have induced network congestion. Such networks exhibit two stable states under the same level of load.
Beta blocker. Beta blocker, also written Î²-blocker, is a class of medications that are particularly used to manage cardiac arrhythmias, and to protect the heart from a second heart attack (myocardial infarction) after a first heart attack (secondary prevention).
Taking your heart failure medications as prescribed is one of the most important things you can do to manage your condition. The more you know about your medications and how they work, the easier it will be for you to stay on track. Common types of drugs used to treat heart failure include: 1  Aldosterone inhibitors. 2  Angiotensin converting enzyme (ACE) inhibitors. 3  Angiotensin II receptor blockers (ARBs). 4  Angiotensin Receptor-Neprilysin Inhibitors (ARNIs). 5  Beta-blockers. 6  Blood vessel dilators. 7  Calcium channel blockers. 8  Digoxin.