Pharmacology Principles & Drug Classifications Flashcards

What is pharmacology?

Answer: The study of drug actions and effects

Pharmacology is the scientific study of drugs and their effects on living organisms. It encompasses understanding how drugs interact with biological systems, including their mechanisms of action, therapeutic uses, adverse effects, and disposition within the body.

What does the term 'half-life' refer to in pharmacology?

Answer: Time for half the drug to be eliminated

In pharmacology, a drug's half-life is the specific amount of time it takes for the concentration of the active drug in the body to be reduced by half. This measurement is crucial for determining how frequently a drug needs to be administered to maintain its therapeutic effect and how long it will remain in a patient's system.

Which class of drugs is used to reduce pain?

Answer: Analgesics

Analgesics are a class of medications specifically designed to relieve pain. They work through various mechanisms to reduce discomfort without necessarily causing a loss of consciousness, making them essential for pain management.

What is the purpose of antibiotics?

Answer: To kill or inhibit bacteria

Antibiotics are a type of antimicrobial drug specifically used to treat bacterial infections. They function by either killing bacteria directly (bactericidal) or by inhibiting their growth and reproduction (bacteriostatic), allowing the body's immune system to clear the infection.

What is a common side effect of antihypertensive drugs?

Answer: Dizziness or lightheadedness

Antihypertensive drugs work to lower blood pressure, and a common side effect is dizziness or lightheadedness. This can occur due to a sudden or significant drop in blood pressure, especially when a patient changes position quickly.

What does 'therapeutic effect' mean?

Answer: The intended beneficial effect

The therapeutic effect of a drug refers to the intended, beneficial physiological or psychological change that the medication is prescribed to achieve. It is the primary reason for administering the drug, aiming to treat a disease, alleviate symptoms, or improve a patient's overall condition.

What are antacids used for?

Answer: To neutralize stomach acid

Antacids are medications used to relieve symptoms like heartburn and indigestion caused by excess stomach acid. They work by directly neutralizing the acid in the stomach, providing quick but often temporary relief from discomfort.

Why is it important to know drug classifications?

Answer: To understand actions, uses, and side effects

Understanding drug classifications is vital for healthcare professionals, including medication aides, as it provides a systematic way to comprehend a drug's general characteristics. This knowledge helps predict a drug's typical actions, its common therapeutic uses, and potential side effects, which is crucial for safe and effective medication administration and patient care.

What should be checked before administering medication?

Answer: The five rights of medication administration

The five rights of medication administration (right patient, right medication, right dose, right route, right time) are a critical safety checklist. Checking these ensures that the medication is administered correctly and safely. This process prevents errors that could lead to adverse patient outcomes.