Learning Journal

Daily reflections and learning insights from my medical journey

March 17, 2026

Today I learned:

  • ECG interpretation basics
  • Normal sinus rhythm characteristics
  • PR interval and QRS duration measurement

Reflection

ECG interpretation is like reading a story - each wave tells you about the electrical activity of the heart. Understanding the normal pattern first makes it easier to spot abnormalities.

March 16, 2026

Today I learned:

  • Cardiac cycle phases
  • Atrial and ventricular systole/diastole
  • Frank-Starling mechanism

Reflection

The cardiac cycle makes much more sense when visualized as pressure-volume loops. The mechanical events follow the electrical events perfectly.

March 15, 2026

Today I learned:

  • Coronary circulation anatomy
  • Left and right coronary artery distribution
  • Collateral circulation in heart disease

Reflection

Understanding coronary anatomy is crucial for predicting which artery is blocked based on the ECG changes. Each artery supplies a specific region of the heart.

March 14, 2026

Today I learned:

  • Blood pressure regulation
  • Baroreceptor reflex mechanism
  • Sympathetic and parasympathetic control

Reflection

The body's ability to maintain blood pressure through multiple mechanisms is fascinating. It's a beautiful example of homeostasis in action.

March 13, 2026

Today I learned:

  • Hemoglobin structure and function
  • Oxygen-hemoglobin dissociation curve
  • Factors affecting oxygen binding

Reflection

The sigmoid shape of the oxygen-hemoglobin dissociation curve is not random - it's perfectly designed for efficient oxygen delivery to tissues.

March 12, 2026

Today I learned:

  • Respiratory mechanics
  • Boyle's Law application in breathing
  • Compliance and elastance concepts

Reflection

Breathing is not just about moving air - it's about pressure gradients and elastic properties of the lungs. Physics and biology working together perfectly.

More entries coming soon as I continue my medical journey...