Acute Kidney Injury and Electrolyte Emergencies: The Mechanism Framework
Acute kidney injury and electrolyte emergencies share a common thread: the pathophysiology is traceable from mechanism to lab finding to clinical consequence to intervention.…
Blog
Teaching, evidence, and the work behind the curve.
Mechanism-first posts on what actually happens at the bedside — and the reasoning that gets you to the right move next time.
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Endocrine Emergencies: DKA, HHS, Thyroid Storm, and Adrenal Crisis
DKA and hyperosmolar hyperglycemic state (HHS) are both complications of insufficient insulin activity, but they are physiologically distinct emergencies with different presentations, different risks,…
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Stroke: Recognition, Time Targets, and the Treatment Decision
Stroke management is a race against two clocks simultaneously: the clock measuring how long brain tissue has been ischemic, and the clock measuring how…
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Acute Coronary Syndrome: Pathophysiology, 12-Lead Interpretation, and the Time Imperative
Acute coronary syndrome is a spectrum, not a single diagnosis. Understanding where a patient sits on that spectrum determines the urgency, the workup sequence,…
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The Primary Survey: ABCDE as a Reasoning Framework
The primary survey is the most important clinical skill in trauma care and the one most often taught incorrectly. Understanding why the sequence is…
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Sepsis: Recognition, Criteria, and the First Hour
Sepsis kills because it is misread at the edges. Not in the obvious presentation — the febrile patient with hypotension and a white count…
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Cardiac Rhythm Recognition: The Systematic Approach
Rhythm recognition is not a memorization skill. It is an interpretive skill — one built on understanding what the waveforms represent physiologically and what…
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Toxidrome Recognition: Pattern First, Agent Second
Toxicology presentations are pattern-recognition problems. Not because the patterns are simple — they are not — but because the clinical syndrome produced by a…
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Shock Differentiation: Four Mechanisms, One Framework
Shock is not a diagnosis. It is a physiologic state — inadequate tissue oxygen delivery relative to demand — and the treatment depends entirely…
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ABG Interpretation: The Reasoning Loop, Not the Sequence
ABG interpretation is the skill most clinicians think they have and fewer actually do. Not because the mechanics are hard — the steps are…