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Discussion: Pharmacokinetics and Pharmacodynamics

 

    As an advanced practice nurse assisting physicians in the diagnosis and treatment of disorders, it is important to not only understand the impact of disorders on the body, but also the impact of drug treatments on the body. The relationships between drugs and the body can be described by pharmacokinetics and pharmacodynamics.

    Pharmacokinetics describes what the body does to the drug through absorption, distribution, metabolism, and excretion, whereas pharmacodynamics describes what the drug does to the body.

    Photo Credit: Getty Images/Ingram Publishing

When selecting drugs and determining dosages for patients, it is essential to consider individual patient factors that might impact the patient’s pharmacokinetic and pharmacodynamic processes. These patient factors include genetics, gender, ethnicity, age, behavior (i.e., diet, nutrition, smoking, alcohol, illicit drug abuse), and/or pathophysiological changes due to disease.

For this Discussion, you reflect on a case from your past clinical experiences and consider how a patient’s pharmacokinetic and pharmacodynamic processes may alter his or her response to a drug.

To Prepare
  • Review the Resources for this module and consider the principles of pharmacokinetics and pharmacodynamics.
  • Reflect on your experiences, observations, and/or clinical practices from the last 5 years and think about how pharmacokinetic and pharmacodynamic factors altered his or her anticipated response to a drug.
  • Consider factors that might have influenced the patient’s pharmacokinetic and pharmacodynamic processes, such as genetics (including pharmacogenetics), gender, ethnicity, age, behavior, and/or possible pathophysiological changes due to disease.
  • Think about a personalized plan of care based on these influencing factors and patient history in your case study.
By Day 3 of Week 1

Post a description of the patient case from your experiences, observations, and/or clinical practice from the last 5 years. Then, describe factors that might have influenced pharmacokinetic and pharmacodynamic processes of the patient you identified. Finally, explain details of the personalized plan of care that you would develop based on influencing factors and patient history in your case. Be specific and provide examples.

RRIBIC

Excellent Good Fair Poor
Main Posting

45 (45%) – 50 (50%)

Answers all parts of the discussion question(s) expectations with reflective critical analysis and synthesis of knowledge gained from the course readings for the module and current credible sources.

Supported by at least three current, credible sources.

Written clearly and concisely with no grammatical or spelling errors and fully adheres to current APA manual writing rules and style.

40 (40%) – 44 (44%)

Responds to the discussion question(s) and is reflective with critical analysis and synthesis of knowledge gained from the course readings for the module.

At least 75% of post has exceptional depth and breadth.

Supported by at least three credible sources.

Written clearly and concisely with one or no grammatical or spelling errors and fully adheres to current APA manual writing rules and style.

35 (35%) – 39 (39%)

Responds to some of the discussion question(s).

One or two criteria are not addressed or are superficially addressed.

Is somewhat lacking reflection and critical analysis and synthesis.

Somewhat represents knowledge gained from the course readings for the module.

Post is cited with two credible sources.

Written somewhat concisely; may contain more than two spelling or grammatical errors.

Contains some APA formatting errors.

0 (0%) – 34 (34%)

Does not respond to the discussion question(s) adequately.

Lacks depth or superficially addresses criteria.

Lacks reflection and critical analysis and synthesis.

Does not represent knowledge gained from the course readings for the module.

Contains only one or no credible sources.

Not written clearly or concisely.

Contains more than two spelling or grammatical errors.

Does not adhere to current APA manual writing rules and style.

Main Post: Timeliness

10 (10%) – 10 (10%)

Posts main post by day 3

0 (0%) – 0 (0%)

0 (0%) – 0 (0%)

0 (0%) – 0 (0%)

Does not post by day 3

First Response

17 (17%) – 18 (18%)

Response exhibits synthesis, critical thinking, and application to practice settings.

Responds fully to questions posed by faculty.

Provides clear, concise opinions and ideas that are supported by at least two scholarly sources.

Demonstrates synthesis and understanding of learning objectives.

Communication is professional and respectful to colleagues. .

Responses to faculty questions are fully answered, if posed.

Response is effectively written in standard, edited English.

15 (15%) – 16 (16%)

Response exhibits synthesis, critical thinking, and application to practice settings.

Responds fully to questions posed by faculty.

Provides clear, concise opinions and ideas that are supported by at least two scholarly sources.

Demonstrates synthesis and understanding of learning objectives.

Communication is professional and respectful to colleagues. .

Responses to faculty questions are fully answered, if posed.

Response is effectively written in standard, edited English.

13 (13%) – 14 (14%)

Response is on topic and may have some depth.

Responses posted in the discussion may lack effective professional communication.

Responses to faculty questions are somewhat answered, if posed.

Response may lack clear, concise opinions and ideas, and a few or no credible sources are cited.

0 (0%) – 12 (12%)

Response may not be on topic and lacks depth.

Responses posted in the discussion lack effective professional communication.

Responses to faculty questions are missing.

No credible sources are cited.

Second Response

16 (16%) – 17 (17%)

Response exhibits synthesis, critical thinking, and application to practice settings.

Responds fully to questions posed by faculty.

Provides clear, concise opinions and ideas that are supported by at least two scholarly sources.

Demonstrates synthesis and understanding of learning objectives.

Communication is professional and respectful to colleagues. .

Responses to faculty questions are fully answered, if posed.

Response is effectively written in standard, edited English.

14 (14%) – 15 (15%)

Response exhibits critical thinking and application to practice settings.

Communication is professional and respectful to colleagues.

Responses to faculty questions are answered, if posed.

Provides clear, concise opinions and ideas that are supported by two or more credible sources.

Response is effectively written in standard, edited English.

12 (12%) – 13 (13%)

Response is on topic and may have some depth.

Responses posted in the discussion may lack effective professional communication.

Responses to faculty questions are somewhat answered, if posed. .

Response may lack clear, concise opinions and ideas, and a few or no credible sources are cited.

0 (0%) – 11 (11%)

Response may not be on topic and lacks depth.

Responses posted in the discussion lack effective professional communication.

Responses to faculty questions are missing.

No credible sources are cited.

Participation

5 (5%) – 5 (5%)

Meets requirements for participation by posting on three different days.

0 (0%) – 0 (0%)

0 (0%) – 0 (0%)

0 (0%) – 0 (0%)

Does not meet requirements for participation by posting on 3 different days

Total Points: 100

Week 1: Basic Pharmacotherapeutic Concepts/Legal Aspects of Prescribing
• Post an intro in the class café.
• Review the required readings and media.

Discussion (review under week1):
• Reflect on a case that you have managed in your clinical experience.
• Describe factors that may have effected pharmacokinetic and pharmacodynamics processes in your patient.
• Explain details of the personalized plan of care that you would develop based on these influencing factors and patient history in your case. Be specific an describe examples.
Discuss pharmacology
• Due by day 3.

Response Posts:
• Respond to 2 colleagues on 2 different days by day 6.
• Suggest additional patient factors that may influence pharmacokinetic and dynamic processes.
• Suggest how the personal care plan may change if the age of the patient were different and if the patient had a comorbid condition such as renal, heart or liver failure.

Assignment (due by day 7)- A 20% reduction will be applied to late submissions

Scenario: As a nurse practitioner, you prescribe medications for your patients. You make an error when prescribing medication to a 5-year-old patient. Rather than dosing him appropriately, you prescribe a dose suitable for an adult.

• Explain the ethical and legal implications of the scenario on all stakeholders involved, such as the prescriber, pharmacist, patient, and patient’s family.

• Describe strategies to address disclosure and nondisclosure as identified in the scenario you selected. Be sure to reference laws specific to your state.

• Explain two strategies that you, as an advanced practice nurse, would use to guide your decision making in this scenario, including whether you would disclose your error. Be sure to justify your explanation.

• Explain the process of writing prescriptions, including strategies to minimize medication errors.