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An equianalgesic chart is a conversion chart that lists equivalent doses of analgesics (drugs used to relieve pain). Equianalgesic charts are used for calculation of an equivalent dose (a dose which would offer an equal amount of analgesia) between different analgesics. [1]
Metoprolol, sold under the brand name Lopressor among others, is a medication used to treat angina and a number of conditions involving an abnormally fast heart rate. [4] It is also used to prevent further heart problems after myocardial infarction and to prevent headaches in those with migraines . [ 4 ]
IV, intravenous; PO, oral route. C is plasma concentration (arbitrary units). Absolute bioavailability compares the bioavailability of the active drug in systemic circulation following non- intravenous administration (i.e., after oral , buccal, ocular, nasal, rectal, transdermal , subcutaneous , or sublingual administration), with the ...
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Class IV agents are slow non-dihydropyridine calcium channel blockers. They decrease conduction through the AV node, and shorten phase two (the plateau) of the cardiac action potential. They thus reduce the contractility of the heart, so may be inappropriate in heart failure.
They should not be used without an accompanying steroid due to an increased risk of severe symptoms, including exacerbation in both children and adults. [3] A 2018 meta-analysis was unable to determine whether an increase serious adverse events reported in the previous meta-analysis on regular salmeterol alone is abolished by the additional use ...
Normality is defined as the number of gram or mole equivalents of solute present in one liter of solution.The SI unit of normality is equivalents per liter (Eq/L). = where N is normality, m sol is the mass of solute in grams, EW sol is the equivalent weight of solute, and V soln is the volume of the entire solution in liters.
The amount of α to β blockade depends on whether labetalol is administered orally or intravenously (IV). Orally, the ratio of α to β blockade is 1:3. [20] [21] Intravenously, α to β blockade ratio is 1:7. [19] [16] Thus, the labetalol can be thought to be a beta blocker with some α-blocking effects.