#208 Lactate and Capillary Refill Time | Comprehensive Overview Perfusion Assessment in Shock (ED/ICU)

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Previously titled “Lactate and Capillary Refill Time | Comprehensive Overview Perfusion Assessment in Shock (ED/ICU)” — renamed by the publisher on Aug 4, 2026

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Recorded22 Jan 2026

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Assessing tissue perfusion is central to managing shock and critical illness. In this comprehensive episode, we review lactate, capillary refill time (CRT), and then directly compare the two bedside perfusion markers, focusing on how to interpret them in emergency and critical care settings. We cover: • Lactate physiology and causes of elevation • Type A vs Type B lactic acidosis • Prognostic value of lactate in critical illness • Capillary refill time physiology and measurement • Normal vs abnormal CRT values • CRT in septic and non-septic shock • Strengths and limitations of lactate vs CRT • Evidence comparing lactate-guided and CRT-guided resuscitation • Practical ED and ICU decision-making Link to video: https://www.youtube.com/watch?v=1x1yCM4Q5O8 📚 DOWNLOAD PDF FOR THIS VIDEO AT LINK BELOW https://www.patreon.com/c/WhiteBoardMedicine We also have MINI COURSES, STUDY GUIDES, PRACTICE QUESTIONS, AD FREE VIDEOS, EDUCATIONAL DISCUSSIONS Consider joining our patreon community today! Disclaimer: This content is for educational purposes only and does not constitute medical advice. Clinical decisions should be made by licensed healthcare professionals using their clinical judgment, institutional protocols, and current evidence. Whiteboard Medicine assumes no responsibility for clinical outcomes.

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