Overview

Primary Care General Tools provide structured guidance for common primary care formulas and decision rules, including energy expenditure estimates, strep pharyngitis scoring, and pregnancy dating. It covers Mifflin-St Jeor and Harris-Benedict BMR calculations, Centor/McIsaac scores, and Naegele's Rule.

How This Skill Works

In Lightweight Interactive Mode, you confirm the clinical context and selected tool, collect inputs with units and timing, validate requirement criteria, apply the chosen tool, and present results with interpretation and safety caveats.

When to Use It

• Estimate daily energy expenditure for nutrition planning using Mifflin-St Jeor or Harris-Benedict.
• Assess adult strep pharyngitis risk with Centor or McIsaac scoring.
• Estimate due date from LMP using Naegele's Rule.
• Reference historical BMR estimates when newer equations are unavailable.
• Support routine primary care decisions by applying validated tools with appropriate context.

Quick Start

1. Step 1: Confirm clinical context and select the tool (Mifflin-St Jeor, Harris-Benedict, Centor Score, McIsaac Score, or Naegele's Rule).
2. Step 2: Gather required inputs with units and timing (e.g., age, height, weight, LMP).
3. Step 3: Apply the tool, interpret results, and note safety caveats.

Best Practices

• Use the right formula for the population (Mifflin-St Jeor for most adults; Harris-Benedict for historical comparisons).
• Provide inputs with consistent units (kg, cm, age in years) and timing (e.g., time of day for BMR estimates when relevant).
• Cross-check Centor/McIsaac scores with local guidelines and patient age.
• Interpret results within the tool's limitations; many tools are validated for specific populations.
• Document the result and safety caveats; tools are decision aids, not diagnostic statutes.

Example Use Cases

• A clinician uses Mifflin-St Jeor to estimate TDEE for a 37-year-old woman, 165 cm, 68 kg to guide caloric recommendations.
• A clinician calculates the Centor score for an adult with sore throat to determine the likelihood of streptococcal infection and need for testing.
• Naegele's Rule is used to estimate the expected due date from the patient's last menstrual period.
• Harris-Benedict is used for historical energy expenditure comparisons when reviewing older charts.
• McIsaac Score is applied to a young adult with fever and tonsillar exudates to adjust Centor scoring for age.

Frequently Asked Questions