Pharmaceutical Care & Clinical Pharmacy

- Definition and components of pharmaceutical care - Pharmacist’s responsibility for drug therapy outcomes - Medication-related problems

Hepler and Strand (1990)

this concept represents the fundamental paradigm shift from product-focused dispensing to patient-centered clinical practice.

4 Definite Therapeutic Outcomes (Hepler & Strand)

Cure of a disease

Elimination or reduction of a patient's symptomatology

Arresting or slowing of a disease process

Preventing a disease or symptomatology

Cure of a disease

(e.g., eradication of H. pylori infection with triple therapy).

Elimination or reduction of a patient's symptomatology

(e.g., pain relief using NSAIDs or opioids).

Arresting or slowing of a disease process

(e.g., slowing renal function decline in diabetic nephropathy using ACE inhibitors).

Preventing a disease or symptomatology

(e.g., administering vaccines or prescribing statins for primary cardiovascular prevention).

The Pharmacist's Patient Care Process (PPCP)

[Collect] ➔ [Assess] ➔ [Plan] ➔ [Implement] ➔ [Follow-Up: Monitor & Evaluate]

Collect

Gather subjective and objective data (medical history, lab values, lifestyle, medication history).

Assess

Analyze collected data to identify Medication-Related Problems (MRPs), evaluate drug appropriateness, effectiveness, safety, and patient adherence.

Plan

Develop an individualized, evidence-based care plan in collaboration with the patient and prescribers (establishing goals, setting drug therapy modifications, defining follow-up metrics).

Implement

Execute the care plan (dispense medication, provide patient counseling, administer vaccines, refer to physicians).

Follow-Up (Monitor & Evaluate)

Continuously monitor clinical parameters, adverse effects, and therapeutic outcomes to refine the plan.

Documentation

_{^{Clinical pharmacists document their assessments using the SOAP Format:}}

S (Subjective)

O (Objective)

A (Assessment)

P (Plan)

S (Subjective)

• Patient statements, symptoms, and self-reported complaints.

O (Objective)

Measurable data (vital signs, lab test results, physical exam findings).

A (Assessment)

Identification of medication-related problems (MRPs).

P (Plan)

Recommendations, interventions, counseling provided, and follow-up timeline.

Therapeutic Advocacy

Ensuring the chosen regimen aligns with current practice guidelines and patient-specific factors (e.g., adjusting renal dosing based on Cockcroft-Gault CrCl).

Prevention of Harm

Proactively identifying life-threatening drug-drug interactions, contraindications, and allergies before the medication reaches the patient.

Therapeutic Drug Monitoring (TDM)

Measuring serum drug concentrations for narrow therapeutic index (NTI) drugs (e.g., Vancomycin, Gentamicin, Digoxin, Lithium, Theophylline) to optimize efficacy while avoiding organ toxicity.

Promoting Adherence

Identifying barriers to compliance (cost, complex regimens, severe side effects) and implementing solutions like pill organizers or once-daily formulations.

Unnecessary Drug Therapy

Medication-Related Problem (MRP):Taking a drug without a valid medical indication, duplicate therapy, or treating an avoidable side effect of another drug.

Common Clinical Examples: Taking antibiotics for a viral cold; taking two different SSRIs simultaneously.

Needs Additional Therapy

Medication-Related Problem (MRP): An untreated medical condition requiring new drug therapy or preventive care.

Common Clinical Examples: A diabetic patient with hypertension not prescribed an ACEi/ARB for renal protection.

Ineffective Drug

Medication-Related Problem (MRP): The drug is not effective for the medical condition, or a more effective drug is available.

Common Clinical Examples: Using Ampicillin for a penicillinase-producing S. aureus infection.

Dosage Too Low

Medication-Related Problem (MRP): Drug dosage, frequency, or duration is insufficient to produce the desired response.

Common Clinical Examples: Prescribing Subtherapeutic Amoxicillin dose for Acute Otitis Media in a child.

Adverse Drug Reaction (ADR)

Medication-Related Problem (MRP): The drug causes an unexpected adverse reaction, allergic reaction, or drug interaction at normal doses.

Common Clinical Examples: Developing a dry cough from Enalapril; ototoxicity from Gentamicin.

Dosage Too High

Medication-Related Problem (MRP): Drug dosage, frequency, or duration is excessive, leading to toxic effects.

Common Clinical Examples: Administering toxic doses of Acetaminophen (>4g/day) leading to hepatotoxicity.

Non-Adherence (Compliance)

Medication-Related Problem (MRP): Patient does not take the medication correctly due to cost, misunderstanding, forgetfulness, or side effects..

Common Clinical Examples: Discontinuing antihypertensives because the patient "feels fine."