https://stream.echo6.co/videos/watch/8841a47c-5e87-46c2-8344-93a0c9f33330 Premium Member Resources: https://ninjanerd.org Ninja Nerds! In this episode, Professor Zach Murphy delivers a comprehensive, high yield breakdown of Deep Neck Infections, building a simple but powerful framework for recognizing these dangerous infections early and managing them safely in real patients and on exams. We start on the whiteboard by organizing the deep neck spaces and explaining why the anatomy matters: these infections can spread quickly, threaten the airway, and extend into the chest. We begin by mapping the major deep neck spaces and the common sources that seed them, including odontogenic infections, tonsillopharyngitis, sinus disease, salivary infections, and trauma-related mucosal breaches. Zach then breaks down the core pathophysiology that drives clinical deterioration, including fascial plane spread, edema, abscess formation, and mass effect on the upper airway, with an emphasis on how quickly a stable patient can become unstable. Next, we cover the classic syndromes you must be able to recognize on sight. You will learn the presentation and key exam clues for peritonsillar abscess, parapharyngeal space infection, and retropharyngeal abscess, including trismus, muffled, hot-potato voice, drooling, neck stiffness, limited neck extension, unilateral swelling, and subtle findings that distinguish these entities from an uncomplicated sore throat. We then transition into the high-stakes complications and the red flags that demand urgent escalation. This includes Ludwig angina with floor-of-mouth elevation, tongue displacement, and progressive airway compromise, as well as descending necrotizing mediastinitis, internal jugular vein thrombophlebitis in Lemierre syndrome, carotid sheath involvement, septic emboli, and intracranial spread. Zach connects these complications to the anatomy so you understand why they occur and how to anticipate them before they affect your patient. Finally, after the whiteboard, we build on a digital diagnostic and management framework that walks you step by step through evaluation and treatment. You will learn how to prioritize airway assessment, when computed tomography imaging with contrast is most useful, how to choose empiric antibiotics for polymicrobial disease, including anaerobes, when drainage is indicated, and when urgent consultation with otolaryngology, anesthesia, or surgery is the safest next move. Enjoy the lecture, and please support us below! Table of Contents: 0:00 Lab 0:51 Deep Neck Anatomy 17:25 Tetrad Of Deep Neck Infections 21:43 Complications of Deep Neck Infections 25:20 Peritonsillar Abscess 31:43 Parapharyngeal Abscess 40:45 Retropharyngeal Abscess 52:22 Ludwig's Angina 59:00 Complications of Deep Neck Infections 1:33:45 Diagnostic Approach to Deep Neck Infections 1:50:09 Treatment Approach of Deep Neck Infections 2:05:12 Comment, Like, SUBSCRIBE! 🌐 Official Links Website: https://www.ninjanerd.org Podcast: https://podcast.ninjanerd.org Store: https://merch.ninjanerd.org 📱 Social Media https://www.tiktok.com/@ninjanerdlectures https://www.instagram.com/ninjanerdlectures https://www.facebook.com/ninjanerdlectures https://x.com/ninjanerdsci/ https://www.linkedin.com/company/ninja-nerd/ 💬 Join Our Community Discord: https://discord.gg/3srTG4dngW #ninjanerd #infectiousdiseases #deepneckinfections Mon, 13 Apr 2026 11:57:53 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/8841a47c-5e87-46c2-8344-93a0c9f33330 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.