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).
Question: I have been placed on an antiarrhythmic drug called sotalol for my heart rhythm problem. How does it work and what are the side effects? Answer :Sotalol is a commonly used antiarrhythmic drug that has been commercially available since the mid 1980's. It's a very unique drug that it blocks potassium channels in the heart but it also blocks adrenaline to the heart, so it's a beta blocker -- which are commonly used drugs -- in addition to being a potassium channel blocker.