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).
Targeted therapies slow the progression of PH and may even reverse some of the damage to the heart and lungs. Calcium channel blockers (CCBs) are a type of targeted therapy used specifically to treat people with idiopathic pulmonary arterial hypertension (IPAH). When you are first diagnosed with PH you may be tested to see if you could benefit from treatment with CCBs. Less than one in ten people with PH benefit from taking CCBs.