Pharmacology Study Notes

Antibiotics are medications used to treat bacterial infections by either killing the organisms or inhibiting their growth. They are categorized into several classes based on their mechanism of action and chemical structure, such as penicillins, cephalosporins, and aminoglycosides. Successful therapy requires identifying the causative agent and ensuring the patient completes the entire prescribed course to prevent drug resistance.

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Anticoagulants are drugs that interfere with the normal coagulation cascade to prevent the formation of blood clots. They are frequently prescribed for conditions such as atrial fibrillation, deep vein thrombosis, and pulmonary embolism. Nursing care focuses on monitoring laboratory values and assessing the patient for any signs of internal or external bleeding.

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Cardiovascular medications encompass a wide range of drugs used to manage blood pressure, heart rate, and cardiac rhythm. These include antihypertensives, antiarrhythmics, and medications for heart failure or angina. Nurses must carefully monitor vital signs and electrolytes to ensure these potent drugs are working effectively without causing dangerous hypotension or bradycardia.

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Diabetes medications are used to maintain blood glucose levels within a target range to prevent complications of diabetes mellitus. This category includes various types of insulin and oral glucose-lowering agents that work through different mechanisms. Nurses play a vital role in blood glucose monitoring, medication timing, and educating patients on the signs of low blood sugar.

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Diuretics are medications designed to increase the excretion of water and electrolytes by the kidneys. They are primarily used to treat conditions involving fluid volume excess, such as congestive heart failure, renal disease, and hypertension. The nursing focus is on monitoring fluid and electrolyte balance and assessing for the therapeutic effect of reduced edema and blood pressure.

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Pain medications include non-opioids like acetaminophen and NSAIDs, as well as potent opioid analgesics such as morphine and hydromorphone. They are used to manage acute and chronic pain by altering the perception of pain or blocking pain signals. The nurse's role involves thorough assessment of pain, monitoring for side effects like respiratory depression, and ensuring safe administration practices.

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