REBEL Cast

🧭 REBEL Rundown 🗝️ Key Points ❌ Don’t chase perfect numbers: Adequate and safe is often better than “perfect but harmful.”💨 Oxygenation levers: Start with FiO₂ and PEEP, but remember MAP is the true driver.🫁 Ventilation levers: Adjust RR and TV, tailored to underlying physiology.🚫 Watch your obstructive patients: Sometimes less RR is more. Click here for Direct Download of the Podcast. 📝 Introduction Ventilator management can feel overwhelming—there are so many knobs to turn, numbers to watch, and changes to make. But before adjusting any settings, it’s crucial to understand why the patient is in distress in the first place, because the right strategy depends on the underlying cause. In this episode, we’ll walk through three different cases to see how the approach changes depending on the problem at hand. ️ The 4 Main Ventilator Settings Tidal Volume (Vt) 🌬️ Amount of air delivered with each breath Typically set based on ideal body weight (6–8 mL/kg for lung protection) Respiratory Rate (RR) ⏱️ Number of breaths delivered per minute Adjusted to control minute ventilation and manage CO₂ FiO₂ (Fraction of Inspired Oxygen) ⛽ Percentage of oxygen delivered Adjusted to maintain adequate oxygenation (goal SpO₂ 92–96%, PaO₂ 55–80 mmHg). PEEP (Positive End-Expiratory Pressure) 🎈 Pressure maintained in the lungs at the end of exhalation to prevent alveolar collapse and improve oxygenation 🧮 Modes of Ventilation AC/VC (Assist Control – Volume Control)How it Works: Delivers a set tidal volume with each breath (whether patient- or machine-triggered).When It’s Used / Pros: Most common initial mode; guarantees minute ventilation; good for patients with variable effort.Limitations / Cons: May cause patient–ventilator dyssynchrony if set volumes don’t match patient’s demand.AC/PC (Assist Control – Pressure Control)How it Works: Delivers a set inspiratory pressure for each breath; tidal volume varies depending on lung compliance/resistance.When It’s Used / Pros: Useful in ARDS (lung-protective strategy), limits peak airway pressures.Limitations / Cons: Tidal volume not guaranteed; must closely monitor volumes and minute ventilation.PRVC (Pressure-Regulated Volume Control)How it Works: Hybrid: set target tidal volume, ventilator adjusts inspiratory pressure breath-to-breath to achieve it (within limits).When It’s Used / Pros: Common default mode on newer vents; combines benefits of VC (guaranteed volume) + PC (pressure limitation).Limitations / Cons: Can increase pressures if compliance worsens.SIMV (Synchronized Intermittent Mandatory Ventilation)How it Works: Delivers set breaths, but allows spontaneous patient breaths in between (without guaranteed volume).When It’s Used / Pros: Used for weaning; allows patient effort.Limitations / Cons: Risk of increased work of breathing if spontaneous breaths are inadequate.PSV (Pressure Support Ventilation)How it Works: Every breath is patient-initiated; ventilator provides preset pressure support to overcome airway resistance.When It’s Used / Pros: Weaning trials; patients with intact drive who just need assistance.Limitations / Cons: Not a full-support mode; not for unstable patients without spontaneous drive. ♟️ Ventilation Strategies Airway ProtectionLow GCS, seizure, strokeLoss of gag/cough reflexHigh aspiration risk (vomiting, GI bleed, poor mental status)Hypoxemic Respiratory FailureSevere pneumoniaARDSPulmonary edemaInhalation injuryVentilatory (Hypercapnic) Failure / Increased Ventilation DemandSevere metabolic acidosis (DKA, sepsis, renal failure) → need high minute ventilationCOPD, asthma (if decompensating)Neuromuscular weakness (myasthenia, Guillain–Barré, spinal cord injury)Airway Obstruction / Anticipated Loss of AirwayTumor, anaphylaxis, angioedemaFacial or airway traumaPre-op / anticipated deterioration Post Peer Reviewed By: Marco Propersi, DO (Twitter/X: @Marco_propersi), and Mark Ramzy, DO (X: @MRamzyDO) 👤 Show Notes Priyanka Ramesh, MD PGY 1 Internal Medicine Resident Cape Fear Valley Internal Medicine Residency Program Fayetteville NC Aspiring Pulmonary Critical Care Fellow 🔎 Your Deep-Dive Starts Here REBEL Core Cast – Pediatric Respiratory Emergencies: Beyond Viral Season Welcome to the Rebel Core Content Blog, where we delve ... Pediatrics Read More REBEL Core Cast 143.0–Ventilators Part 3: Oxygenation & Ventilation — Mastering the Balance on the Ventilator When you take the airway, you take the wheel and ... Thoracic and Respiratory Read More REBEL Core Cast 142.0–Ventilators Part 2: Simplifying Mechanical Ventilation – Most Common Ventilator Modes Mechanical ventilation can feel overwhelming, especially when faced with a ... Thoracic and Respiratory Read More REBEL Core Cast 141.0–Ventilators Part 1: Simplifying Mechanical Ventilation — Types of Breathes For many medical residents, the ICU can feel like stepping ... Thoracic and Respiratory Read More REBEL Core Cast 140.0: The Power and Limitations of Intraosseous Lines in Emergency Medicine The sicker the patient, the more likely an IO line ... Procedures and Skills Read More REBEL Core Cast 139.0: Pneumothorax Decompression On this episode of the Rebel Core Cast, Swami takes ... Procedures and Skills Read More The post REBEL Core Cast 146.0–Ventilators Part 4: Setting up the Ventilator appeared first on REBEL EM - Emergency Medicine Blog.

🧭 REBEL Rundown 📝 Introduction Welcome to the Rebel Core Content Blog, where we delve into crucial knowledge for emergency medicine. Today, we share insightful tips from PEM specialist Dr. Elise Perelman, shedding light on respiratory challenges in infants, toddlers, and young children during the viral season. Understanding that most cases involve typical viruses, we aim to equip you with diagnostic pearls to identify more serious pathologies. Click here for Direct Download of the Podcast. 🔍 Recognizing Respiratory Patterns Pearl #1: Look at Your PatientBegin exams from the doorway. Observing patterns such as accessory muscle usage can reveal a patient’s respiratory effort. Specify whether the work of breathing occurs during inspiration, expiration, or both. Inspiratory work indicates difficulty getting air in, while expiratory work suggests trouble pushing air out. Silent tachypnea may point to other issues, like acidemia or pneumothorax. 🩺 Localizing Sounds for Accurate Diagnosis Pearl #2: Localize the SoundBreathing noises signal varied respiratory issues. Stridor, often heard on inspiration, results from obstructions above the thoracic inlet. Conversely, wheezing, generally linked to exhalation, indicates obstructions in the lower airways. Watch for signs like ‘silent chest’—a dangerous, severe obstruction, and distinguish grunting as a bodily mechanism to prevent alveolar collapse. Correctly identifying the sound assists in determining the appropriate intervention. 💉 Tailoring Treatment for Effective Results Once a sound is localized, treatments vary. We explore Soder from nasal congestion, typically needing supportive care and suctioning. Stridor from conditions like croup is eased with interventions to reduce airway swelling, such as steroids or inhaled epinephrine. Conversely, wheezing in infants is often due to bronchiolitis—not bronchospasms—and over-treatment is to be avoided. Supportive measures including suction, hydration, and oxygen are preferred unless improvement warrants bronchodilators. 🌬️ Intervening with Severe Asthma In severe cases of asthma or bronchiolitis, where standard at-home treatments fail, immediate adjunct therapies like intramuscular epinephrine become essential. Administering this quickly can alleviate obstruction when inhalants aren’t effective due to low air movement. 🦓 Navigating the Zebras of Respiratory Cases When recognizing Zebras—uncommon cases overshadowed by routine diagnoses—remain vigilant for histories or presentations that don’t conform. Conditions like pneumonia, bacterial tracheitis, and even myocarditis may mimic more common issues. 📌 Conclusion As attending physicians, our role extends beyond conventional treatment—it’s about discerning the atypical from the typical. Dr. Perelman urges continual reassessment, emphasizing reliance on observational skills as much as technological aid. Keeping keen on respiratory nuances ensures we catch those outlier cases, paving the way for adept medical care despite the overwhelming prevalence of viral infections.Stay tuned for more pearls and insights in our future posts, as Dr. Perelman shares further strategies for effective pediatric emergency care. For more resources, continue exploring our faculty’s valuable contributions on our site. Until then, stay safe and perceptive in your practice. Post Peer Reviewed By: Mark Ramzy, DO (X: @MRamzyDO), and Marco Propersi, DO (X: @Marco_Propersi) 👤 Guest Elise Perlman MD Pediatric Emergency Medicine​ Assistant Professor, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell Meet The Team 🔎 Your Deep-Dive Starts Here REBEL Core Cast 146.0–Ventilators Part 4: Setting up the Ventilator Ventilator management can feel overwhelming—there are so many knobs to ... Thoracic and Respiratory Read More REBEL CAST – IncrEMentuM26 Speaker Spotlight : Drs. Tarlan Hedayati, Jess Mason and Simon Carley Host Dr. Mark Ramzy shines a spotlight on three distinguished ... Resuscitation Read More REBEL Core Cast 145.0: Understanding QTc Prolongation: Causes, Risks, and Management The QT interval is a vital part of ECG interpretation, ... Procedures and Skills Read More REBEL Core Cast 144.0: Tourniquet Tips In this episode of the Rebel Core Content podcast, Swami ... Procedures and Skills Read More REBEL CAST – IncrEMentuM26 Speaker Spotlight : George Willis and Mark Ramzy 🧭 REBEL Rundown 📝Introduction In this exciting episode of REBEL ... Endocrine, Metabolic, Fluid, and Electrolytes Read More REBEL Core Cast – DKA: Beyond the Basics Part 2 – SCOPE DKA-Trial Managing diabetic ketoacidosis (DKA) requires careful consideration of fluid therapy, ... Endocrine, Metabolic, Fluid, and Electrolytes Read More The post REBEL Core Cast – Pediatric Respiratory Emergencies: Beyond Viral Season appeared first on REBEL EM - Emergency Medicine Blog.

🧭 REBEL Rundown 📝Introduction Welcome to this special edition of the REBEL Cast, where we unravel key highlights and educational insights from the IncrEMentuM Conference in Spain. This event is a cornerstone for advancing emergency medicine education, drawing esteemed speakers and participants from around the globe. As emergency medicine gains traction in Spain, this conference has become an essential platform for knowledge exchange and professional growth. Today, host Dr. Mark Ramzy shines a spotlight on three distinguished speakers: Dr. Jess Mason, Dr. Tarlan Hedayati, and Dr. Simon Carley, who shared their expertise and experiences at this transformative gathering last spring. Click here for Direct Download of the Podcast. 🤔What's IncrEMentuM? A new conference and a pivotal gathering for emergency medicine professionals worldwide, has become an essential platform for education, collaboration, and advocacy, especially in light of emergency medicine’s recent recognition as a specialty in Spain. The conference is praised for its outstanding production quality, engaging speakers, and its capacity to foster a global community of emergency care professionals. 🦪Pearls from Their IncrEMentuM 2025 Lectures Think about alternative diagnoses that could be driving the patient’s atrial fibrillationMaybe the atrial fibrillation is an adaptive response and slowing them down (whether chemically or electrically) may cause more harm than goodGet in the mental space before having to perform a High Acuity Low Occurrence (HALO) procedure and walk through each of the parts step by stepEMRAP has uploaded the video of the Resuscitative Hysterotomy here (Subscription required to watch)Like many things in critical care, a patient with a severe head injury requires you to do many little things very well (ie. reducing ICP increases by taking off the C-collar if able, positioning the patient appropriately, knowing when to use certain medications) See you in Spain! The upcoming conference aims to gather world-class educators once more and promises an enriching experience for all attendees. Drs. Tarlan Hedayati, Jess Mason and Simon Carley, along with many others, will be there at the event. For more information on the IncrEMentuM Conference and to register, visit their website! See you there! Tarlan Hedayati, MD Vice Chair of Education and Associate Program Director Cook County, Chicago, IL Jess Mason, MD Associate Professor of Emergency Medicine Vanderbilt University, Nashville, TN Simon Carley, MD, PhD Professor of Emergency and Dean of the Royal College of Emergency Medicine Manchester, England 🔎 Your Deep-Dive Starts Here Incrementum Conference 2026: Revolutionizing Emergency Medicine in Spain In this special episode of Rebel Cast, we spotlight the ... Read More REBEL Core Cast 110.0 – On Shift Learning Pearls Take Home Points: Patients with recent onset atrial fibrillation can ... Read More The post REBEL CAST – IncrEMentuM26 Speaker Spotlight : Drs. Tarlan Hedayati, Jess Mason and Simon Carley appeared first on REBEL EM - Emergency Medicine Blog.

🧭 REBEL Rundown 📌 Key Points 🫀 Prolonged QTc raises risk of torsades de pointes ⏱️ Correct for heart rate: QTc > 440 ms (men) or > 460 ms (women); > 500 ms = high TdP risk.💊 Common culprits: Methadone, ondansetron, macrolides, fluoroquinolones, antipsychotics.🧪 Prevention: Check & replete K, Mg, Ca and avoid QT-prolonging meds when possible.🚑 If TdP develops: Defibrillate + IV magnesium and stop offending agents. Click here for Direct Download of the Podcast. 📝 Introduction The QT interval is a vital part of ECG interpretation, reflecting the heart’s electrical recovery after each beat. When prolonged, it can set the stage for torsades de pointes. Understanding how to measure and correct the QT interval, identify high-risk medications, and act quickly when TdP occurs is essential for every clinician. This guide walks you through the physiology, interpretation, common causes, and emergency management of QTc prolongation to keep your patients safe. 🤔 Definition and Physiology QT evaluation is a fundamental component of EKG analysis. The QT interval reflects the time from ventricular depolarization and contraction through ventricular repolarization and relaxation.Clinically, QT prolongation increases the risk of torsades de pointes (TdP) – a form of polymorphic ventricular tachycardia (a non-perfusing rhythm) that is classically described as a pattern of “twisting points” or alternating amplitudes. This occurs when a premature ventricular contraction leads to an R on T phenomenon during the repolarization period.The differential for QT prolongation is long and varied: congenital long QT, electrolyte disturbances (hypoK, hypoMg, hypoCa), hypothermia, myocardial ischemia, and increased intracranial pressure. Moreover, a whole host of xenobiotics can prolong the QT interval: methadone, anti-microbials, anti-emetics, anti-psychotics, and anti-dysrhythmics. 🧮 ECG Interpretation The QT interval must be interpreted in conjunction with the patient’s heart rate. The QT interval with shorten in the context tachycardia and length in the context of bradycardia. In other words, tachycardia is protective when evaluating the patient with prolonged QT.With that in mind, many EKG machines will calculate a corrected QT interval or QTc. The QTc is a standardized way to account for variations in heart rate so clinicians are able to compared QT intervals at different heart rates over time and thus calculate risk.Generally, a QTc is considered prolonged if greater than 440ms in males or 460ms in females. Once the QTc > 500msec, the risk of TdP increases 2-3 fold.1A variety of different correction formulas exist: Bazett, Fridericia, Hodges, Framingham, Rautaharju.Manually, the QT interval should be measured from the beginning of the QRS complex to the end of the T wave – and thus should be measured in leads where all portions can be visualized, most frequently lead II or V5/V6. Ideally, the QT interval should be average over 3 or more beats.2 To determine the end of the T wave, a tangent line should be drawn through the maximum slope of the T wave – the point at which this line crosses the isoelectric line is the end of the T wave.3 💊 Commonly Used QTc Prolonging Medications Methadone: particularly concerning because not only does it inherently prolong QT but also induces a bradycardiaAntiemetics: OndansetronMacrolides: azithromycin, erythromycin, clarithromycinFluroquinolones: ciprofloxacin, levofloxacinAntipsychotics: Haloperidol, Olanzapine ️ Management Prevention is key!Assess electrolytes (Mg, Ca, K) and replete as neededTelemetry MonitoringIf patient happens to fall into TdP, initiate ACLS with immediate defibrillation and magnesium.Withdrawal of offending agents. 📚 References Drew BJ, Ackerman MJ, Funk M, Gibler WB, Kligfield P, Menon V, Philippides GJ, Roden DM, Zareba W. Prevention of torsade de pointes in hospital settings: a scientific statement from the American Heart Association and the American College of Cardiology Foundation. Circulation. 2010 Mar;121(8):1047-1060.Postema PG and Wilde AAM. The measurement of the QT interval. Curr Cardiol Rev. 2014 Aug;10(3): 287-294.https://litfl.com/qt-interval-ecg-library/ Post Peer Reviewed By: Marco Propersi, DO (Twitter/X: @Marco_propersi), and Mark Ramzy, DO (X: @MRamzyDO) 👤 Associate Editor Anand Swaminathan MD, MPH All Things REBEL EM Meet The Team 🔎 Your Deep-Dive Starts Here REBEL Core Cast 137.0: A Simple Approach to Sinus Tachycardia Sinus tachycardia is the most prevalent cardiac dysrhythmia in critically ... Cardiovascular Read More REBEL Core Cast 136.0: A Simple Approach to the Tachypneic Patient In this episode, we focus on the bedside evaluation of ... Thoracic and Respiratory Read More REBEL Core Cast 135.0: A Simple Approach to Hypoxemia (vs. Hypoxia) In this episode, we break down a practical bedside approach ... Resuscitation Read More REBEL Core Cast 134.0 – Acetaminophen Toxicity Acetaminophen (APAP) overdose remains one of the most common causes ... Toxicology Read More Street Medicine: Compassionate Care for the Unhoused Introduction: In this episode of Rebel Cast, host Marco Propersi, ... Read More REBEL Cast Ep91: Static Ultrasound vs Landmark Placement of Subclavian Central Lines Background Information: Central venous catheterization is a common procedure performed in ... Procedures and Skills Read More The post REBEL Core Cast 145.0: Understanding QTc Prolongation: Causes, Risks, and Management appeared first on REBEL EM - Emergency Medicine Blog.

🧭 REBEL Rundown 📌 Key Points 🩸 Tourniquets save lives and limbs: Apply immediately when you’ve got arterial bleeding.📍 Placement matters: Position the tourniquet 5–6 cm proximal to the arterial bleed, or if you can’t identify the exact source, place it as high up on the limb as possible.🔧 Windlass technique: The windlass provides only a small amount of extra pressure. Tighten the velcro first, then twist the windlass 1–2 turns to complete compression. Click here for Direct Download of the Podcast. ⏰ Highlights 00:00 Introduction to Tourniquets00:40 Optimal Placement of Tourniquets01:21 Proper Tightening Techniques01:57 Importance of Timing and Application02:36 Summary and Conclusion 📝 Introduction In this episode of the Rebel Core Content podcast, Swami provides crucial tips on using tourniquets. Highlighting the significance of these life and limb-saving devices, the discussion focuses on the optimal placement of tourniquets, emphasizing placing them 2-3 inches (5-6 cm) above the bleeding source and avoiding joints. Swami also advises on the correct way to tighten the tourniquet using the Velcro strap first, followed by minimal use of the windless. The importance of noting the application time to avoid prolonged arterial flow interruption is also discussed. The episode concludes with a reminder to visit the podcast’s website for more valuable content. Post Peer Reviewed By: Marco Propersi, DO (Twitter/X: @Marco_propersi), and Mark Ramzy, DO (X: @MRamzyDO) 👤 Associate Editor Anand Swaminathan MD, MPH All Things REBEL EM Meet The Team 🔎 Your Deep-Dive Starts Here REBEL Cast Ep82: Timing of Endoscopy for UGIB Background: Upper endoscopy allows for the identification of the source ... Abdominal and Gastroinstestinal Read More REBEL Core Cast 1.0 – The Intro REBEL EM-ers: Salim, Jenny and I would like to announce ... Read More REBEL Cast Ep 46b: Vent Management in the Crashing Patient with Haney Mallemat In Episode 46a we discussed respiratory failure and NIV.  In ... Thoracic and Respiratory Read More REBEL Cast Ep 46a – Respiratory Failure and NIV with Haney Mallemat Imagine you have a patient in respiratory failure sitting right ... Thoracic and Respiratory Read More REBEL Cast Ep 43: Pain Control and Opioid Sparing Options in the ED Background: In the United States we are not only seeing ... Trauma Read More REBEL Cast Episode 42: Research From the Past Year – In the Pipeline Welcome back to Episode 42 of REBEL Cast. In this ... Read More The post REBEL Core Cast 144.0: Tourniquet Tips appeared first on REBEL EM - Emergency Medicine Blog.