Ethics in Medical research Flashcards
When looking at ethics in medical research, we must look at it differently/separately than in clinical care. Why?
- research and care have different goals
- medical research costs a lot of money (possibility of corruption)
- past harms
- You may care for a patient who is also a research volunteer
what is the goal of clinical care and what is the goal of medical research
- Clinical care goal = patient outcomes, cure patients, make them comfortable
- Medical research goal = knowledge, finding cures etc.
Possibility of corruption in medical research
when drug trials aren’t effective, it is possible companies will skew their results to have better outcomes so they can rekindle some of the profits invested
past harms
prima facie duties: restitution
caring for a patient who is also a research volunteer
- Patients may be participants in clinical trials
- Nurses may or may not know, patients may or may not know (involuntary patients)
- Nurses may also be involved in a clinical trial
what does REB stand for
Research ethics board
what is the purpose of the REB
all federally funded research in Canada must get approval before proceeding
To protect participants, not researchers
true or false the REB is made up of researchers
false, it is made up with people who are experts in ethics
what is the gold standard for testing medications
Randomized Controlled Trial:
Comparing variables [patient outcomes] (e.g., people who got ACL surgery and people who just got cut open as part of the study)
Options for comparison in medical research
- Investigational treatments: used to be called experimental drugs
- Existing medication
- Placebo
- No intervention (observation): used when there typically isn’t an existing medication
Comparisons referred to as?
an “arm”
2 arm = comparing 2
3 arm = comparing 3
4 arm = comparing all 4
what are the 4 phases of clinical trials
- dosage
- safety
- efficacy
- post-marketing
describe phase 1 trials
dosage:
- how we find out how much of a drug should be given (and can be tolerated) and when it becomes toxic
- small number of people (healthy people; usually 180lb male)
- placebo
- Start with small amount of medication on small group of people, increase amount on new group of people
describe phase 2 trials
safety:
- Slightly larger trial
- Still using healthy volunteers
- Still able to have a placebo
- Making sure no one is having a SAE – serious adverse event (i.e., death or near death)
- Usually longer than phase I trials
- Making sure there are no long-lasting side effects
- repurposed drugs get a pass on phase 2
describe phase 3 trials
efficacy:
- Sometimes this phase is combined with phase II
- Not quite the same as the meaning of “effective”
** Efficacy is a statistical measurement not how effective something is - As big as possible
** no longer testing it on “healthy” people
** using sick participants only (testing drug on the condition) - no placebo (selection criteria may include not being on an existing medication of the same kind)
*** placebo means leaving sick people unmedicated (which would be unethical)
define efficacy
Efficacy is a statistical measurement not how effective something is
why are there no placebos in phase 3 trials
using sick participants only (testing drug on the condition)
having a placebo means leaving sick people unmedicated (which would be unethical)
describe phase 4 clinical trials
post-marketing:
- not a formal part of a clinical trial
- drug is out there, doctors are prescribing it, people are taking it
- more people are taking the drug, therefore theres more potential for side effects to appear
*** not all side effects are going to show up in smaller clinical trials - working with the side effects
what’s supposed to happen in phase 4 trials?
when people report side effects to their doctors, doctors are supposed to inform health Canada about them – however, consumers can now report side effects to the Canada Vigilance Program
Any participant can drop-out from the research at any time for any reason
liberty right – therefore, as long as the patient is not involuntary
randomized
- how researchers decide which arm the participants will participate in
- patients need to understand that their doctors will not assign them to a particular arm based on what will benefit them
- they will be assigned at random
therapeutic misconception
patients misunderstanding what randomized means, patients believe they are getting given something therapeutic
why must experiments be randomized
otherwise the data won’t be accurate
what is a “double-blind” clinical trial
double-anonymized: neither the researcher nor the participant know who got which drug