27 results
Hypoxia and Hypoxemia - Overview
Hypoxia - insufficient oxygen delivered to tissues to meet demands
Hypoxemia - low
(e.g low cardiac ... carrying capacity (e.g ... cannot use oxygen (e.g ... #pulmonary #differential ... #diagnosis #causes
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
Respiratory Failure - Differential ... High altitude (eg ... Intrapulmonary shunting (eg ... intracardiac shunting (eg ... #Differential #
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Control rate (e.g ... disease or CHF) ... Treat underlying cause ... Control rate (e.g ... disease or CHF)
Hyponatremia - Differential Diagnosis by Mechanism
Decr Blood Pressure (“Decr Effective Circulating Volume”) 
 - Volume depletion
- Malignancy (e.g ... CNS pathology (e.g ... pathology (e.g. ... #Diagnosis #Table ... #Causes #Sodium
Peri-operative Hyperthermia - Guidelines for Crises in Anaesthesia
If prolonged or ≥ 39 C this is a
Surgical devices, e.g ... Sepsis (→ 3-14) e.g ... malignant syndrome (e.g ... #Hyperthermia #Differential ... #Causes #Anesthesiology
Reflex Testing - Causes of Hyporeflexia and Hyperreflexia
Focal Hyporeflexia: 
 • Radiculopathy, Mononeuropathy, Polyneuropathy, Acute stroke,
Reflex Testing - Causes ... polyneuropathy (e.g ... #differential # ... diagnosis #table ... #neurology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
- Differential ... • Drugs • Pulmonary ... Reduced GFR, AKI/CRF ... Uosm < 100 mmol/kg ... #Hyponatremia #Nephrology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
- Differential ... • Drugs • Pulmonary ... Reduced GFR, AKI/CRF ... Uosm < 100 mmol/kg ... #Hyponatremia #Nephrology
Erythrocytosis - Polycythemia Differential Diagnosis Algorithm

Elevated Hemoglobin:
 • Males: Hb > 16.5 g/dL/HCT ≥ 49%
 •
- Polycythemia Differential ... Polycythemia - Acquired Causes ... : • Hypoxia-driven ... : Cardiac/pulmonary ... Paraneoplastic (e.g
Causes of Polyuria - Differential Diagnosis
Excess Intake of Water:
 • Primary polydipsia (a.k.a. "psychogenic polydipsia")
 •
Causes of Polyuria ... - Differential ... SGLT2 inhibitors (e.g ... Infiltrative diseases, Hypoxic ... #nephrology