Rights of Therapeutics and Evidence-Based Medicine

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Questions and Answers

What is one of the steps involved in Evidence Based Medicine (EBM)?

  • Conducting laboratory experiments
  • Administering treatments to patients
  • Creating new drugs
  • Asking a focused question (correct)

Which type of evidence in EBM involves the use of secondary evidence to make clinical recommendations?

  • Primary evidence
  • Empirical evidence
  • Tertiary evidence (correct)
  • Anecdotal evidence

In EBM, what is considered as secondary evidence?

  • Laboratory experiments
  • Clinical trial results
  • Interpretation of original research (correct)
  • Original research studies

Which aspect is NOT part of the 'Rights of Therapeutics'?

<p>Right diagnosis (A)</p> Signup and view all the answers

What is the purpose of evaluating outcomes in EBM?

<p>To apply research findings to clinical practice (A)</p> Signup and view all the answers

What is the formula to calculate the incidence in the exposed group?

<p>a/(a+b) (C)</p> Signup and view all the answers

In pharmacokinetics, which part of the body is primarily responsible for drug metabolism?

<p>Liver (A)</p> Signup and view all the answers

What is the primary factor influencing drug distribution in the body?

<p>Tissue permeability (B)</p> Signup and view all the answers

Which pharmacokinetic process involves the movement of drugs from the bloodstream to various tissues and organs?

<p>Distribution (C)</p> Signup and view all the answers

What is the main focus of pharmacokinetics?

<p>Concentration-effect relationship (B)</p> Signup and view all the answers

Which factor is essential in understanding drug dynamics according to the text?

<p>Equilibrium between free and bound drug fractions (A)</p> Signup and view all the answers

What does Odds Ratio (OR) measure in epidemiology?

<p>Risk of outcome among exposed vs. unexposed groups (C)</p> Signup and view all the answers

In calculating Relative Risk (RR), what does 'Incidence in the exposed divided by the incidence in the unexposed' represent?

<p>'a' value divided by 'a + b' value (C)</p> Signup and view all the answers

'Drug dose -> concentration in plasma -> concentration at the effect/target site' best describes which pharmacokinetic process?

<p>'Distribution' (C)</p> Signup and view all the answers

What occurs when a drug is orally administered in terms of absorption according to the text?

<p>Traverse of gastrointestinal membrane for absorption into the bloodstream. (A)</p> Signup and view all the answers

Which administration route can bypass first-pass metabolism?

<p>Intravenous (B)</p> Signup and view all the answers

Which route of drug delivery is known for its sustained release effect?

<p>Transdermal (B)</p> Signup and view all the answers

What determines the choice of drug administration route according to the text?

<p>Onset of effect required (C)</p> Signup and view all the answers

Which enzyme is involved in oxidizing drugs to make them more water-soluble for elimination?

<p>Cytochrome P450 (A)</p> Signup and view all the answers

What is the unique characteristic of Enalapril mentioned in the text?

<p>Metabolite with pharmacological action (A)</p> Signup and view all the answers

Which parameter describes the efficiency of drug elimination from the body?

<p>Clearance (B)</p> Signup and view all the answers

Which administration route allows for drugs to be directly injected into a vein?

<p>Intravenous (B)</p> Signup and view all the answers

What is the purpose of adding moieties or chemical groups to a drug molecule during conjugation?

<p>Facilitate biliary elimination (D)</p> Signup and view all the answers

Which administration route is known for providing a local effect such as pain relief?

<p>Rectal (D)</p> Signup and view all the answers

Which parameter determines the loading dose of a drug?

<p>Volume of distribution (C)</p> Signup and view all the answers

What is the key advantage of blinding in Randomized Controlled Trials (RCTs)?

<p>Minimizes volunteer bias (B)</p> Signup and view all the answers

What is one of the disadvantages of Randomized Controlled Trials (RCTs) mentioned in the text?

<p>Ethical challenges in certain scenarios (B)</p> Signup and view all the answers

Which discipline studies the distribution and determinants of diseases in populations?

<p>Epidemiology (C)</p> Signup and view all the answers

What type of study is used to investigate the relationship between two factors?

<p>Analytic study (C)</p> Signup and view all the answers

In a cohort research design, what is the outcome variable also known as?

<p>Dependent variable (A)</p> Signup and view all the answers

Which study design starts with the outcome and works backwards?

<p>Case-control design (B)</p> Signup and view all the answers

What is one issue associated with cross-sectional analytical studies mentioned in the text?

<p>Inability to determine true association with exposure and outcome (A)</p> Signup and view all the answers

How do researchers assess the strength of association between exposure and outcome?

<p>By calculating the Relative Risk (RR) and Odds Ratio (OR) (A)</p> Signup and view all the answers

What do Observational Studies primarily focus on?

<p>Observing exposure and outcomes without interfering (B)</p> Signup and view all the answers

What distinguishes Pharmacoepidemiology from Clinical Pharmacology?

<p>Combination of epidemiology and clinical pharmacology (A)</p> Signup and view all the answers

What is pharmacokinetics the study of?

<p>The relationship between drug concentration, pharmacological effect and time. (D)</p> Signup and view all the answers

Which concentration-time curve is most consistent with administration as a transdermal patch?

<p>Subcutaneous injection (B)</p> Signup and view all the answers

Why does the dose of Enalapril need to be reduced in people with renal impairment?

<p>Enalapril's active metabolite is predominantly renally excreted. (C)</p> Signup and view all the answers

What does pharmacodynamics refer to?

<p>What the drug does to the body. (B)</p> Signup and view all the answers

Cmax in pharmacokinetics refers to:

<p>Peak concentration. (C)</p> Signup and view all the answers

What is the significance of EC50 in pharmacodynamics?

<p>It reflects the concentration at which 50% of the maximum effect is observed. (C)</p> Signup and view all the answers

How do agonists work in pharmacodynamics?

<p>They enhance cellular activity by mimicking a natural chemical. (A)</p> Signup and view all the answers

'Second messengers' in pharmacodynamics are responsible for:

<p>Carrying signals from cell surface receptors to other parts of the cell. (C)</p> Signup and view all the answers

What do concentration-effect relationships Emax and EC50 represent in pharmacodynamics?

<p>Emax is the maximal response, while EC50 is the concentration at 50% of Emax. (A)</p> Signup and view all the answers

What factor influences the distribution of unbound Midazolam to various tissues throughout the body?

<p>Molecular weight (D)</p> Signup and view all the answers

Which enzyme extensively metabolizes Midazolam?

<p>CYP3A4 (C)</p> Signup and view all the answers

What is the relationship between the EC50 parameter and the dosage of Midazolam in older people?

<p>They need a lower dose due to decreased sensitivity (B)</p> Signup and view all the answers

In terms of pharmacokinetics, why does Midazolam have a rapid onset of action?

<p>It can cross the blood-brain barrier quickly (D)</p> Signup and view all the answers

What characteristic of Midazolam allows it to dissolve in lipids and move easily through cell membranes?

<p>Lipophilicity (C)</p> Signup and view all the answers

Why would redosing of Theophylline be necessary after 6-8 hours based on the PK/PD graph?

<p>Loss of effectiveness over time (B)</p> Signup and view all the answers

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