Cohorts: cohort-2028

Measuring intervals and voltage

https://youtu.be/FO-TR3V5Pk8 In this video (scrub through the video to see chapters) 00:12 Measuring intervals and voltages 00:32 Standard ECG Calibration 02:55 RR Interval 05:24 PR Interval 06:17 QRS Duration 10:08 QT Interval 13:48 Now let’s measure some voltages!

Normal sinus rhythm

https://youtu.be/QUHXcqWGQt0 In this video (scrub through the video to see chapters) 00:09 Normal sinus rhythm 01:03 Conduction through the heart during normal sinus rhythm 08:21 Think of heart rhythm as a relay race 10:50 Gap junctions: How cardiac cells communicate electrically 11:05 Systematic approach to interpreting the ECG 12:24 Five criteria for normal sinus rhythm 21:06 Two common misconceptions 22:12 References

Understanding the ECG

https://youtu.be/rynLo_vOW3U In this video (scrub through the video to see chapters) 00:37 Understanding the ECG—the electrical activity in the cell 03:22 The normal conduction pathway through the heart 06:06 The vectors for the different ECG leads 08:55 Setting up a grid system to map the ECG vectors 13:52 The depolarization wavefront through the heart 20:10 Repolarization through the heart 24:19 References

Ordering the ECG

https://youtu.be/qw6IgTgK7Ss In this video (scrub through the video to see chapters) 00:09 Ordering the ECG—indications to perform an ECG 06:18 Cost of an ECG 07:18 Ambulatory ECG monitoring and exercise testing

Endocrine high-yield handouts

Adrenal cortex: Congenital adrenal hyperplasia Adrenal medulla: Pheochromocytoma Introduction to Endocrinology Hyopopituitarism Hypothalamic-pituitary-adrenal axis: Cortisol deficiency Hypothalamus-pituitary-gonadal axis​ Metabolic syndrome and insulin resistance Multiple endocrine neoplasia (MEN) and autoimmune polyglandular syndrome Osteoporosis Overview of types of diabetes mellitus Thyroid: Benign nodules and thyroid cancer Thyroid hormone production Thyroid: Hypo- and hyperthyroidism Thyroid lab testing Type […]

Multiple endocrine neoplasia (MEN) and autoimmune polyglandular syndrome

Pre-session optional video Osmosis: Multiple endocrine neoplasia (8:42 min.) High-yield handouts Activity Activity 1: Connections (Tap to open.)

Endocrine session guides

Adrenal cortex: Congenital adrenal hyperplasia

Pre-session optional video YouTube: Congenital adrenal hyperplasia: Etiology, Pathophysiology, Clinical features, Diagnosis, Treatment (~5 min.) YouTube: Don’t Memorize CAH—Understand It with This Simple Strategy! (~9 min.) High-yield handouts Activities Activity 1: Text match (Tap to open.) Activity 2: Fill in the table (Tap to open.)

Hypothalamus-pituitary-gonadal axis

High-yield handouts Activities Activity 1: Crossword puzzle (Tap to open.) Activity 2: Drag and drop (Tap to open.)

Endocrine System

Welcome to the Endocrine System! This is the first system you’ll study in your second year, and it plays a foundational role in setting the stage for what comes next. The endocrine system regulates nearly every aspect of human physiology—from growth and metabolism to stress responses, reproduction, and homeostasis. As such, it provides a critical […]