Decode Medicine from OPD to ICU rounds
When I entered the second year of my MD residency, I was certain about one thing—I wanted to pursue Critical Care Medicine. Having a clear goal early made my preparation much more focused. I initially started with Paul Marino’s The ICU Book. It gave me a solid understanding of critical care concepts and physiology. However, […]
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Snake Bite (Snake Envenomation) India accounts for one of the highest snakebite burdens globally. Important venomous snakes: “Big Four” of India Snake Scientific Name Major Toxicity Indian Cobra Naja naja Neurotoxic + Cytotoxic Common Krait Bungarus caeruleus Neurotoxic Russell’s Viper Daboia russelii Hemotoxic + Nephrotoxic Saw-scaled Viper Echis carinatus Hemotoxic Other important species: King cobra
Subarachnoid Hemorrhage (SAH) Subarachnoid hemorrhage (SAH) is bleeding into the subarachnoid space between the arachnoid mater and pia mater where cerebrospinal fluid (CSF) circulates. It is one of the most devastating neurological emergencies with: Mortality: 25–50% Significant disability among survivors Peak incidence: 40–60 years Approximately 80–85% of spontaneous SAH results from rupture of an intracranial
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Anaphylaxis According to the World Allergy Organization (WAO): Anaphylaxis is a severe, life-threatening systemic hypersensitivity reaction characterized by rapidly developing airway, breathing and/or circulation problems, usually associated with skin and mucosal changes. Types of Anaphylaxis Feature IgE-Mediated Anaphylaxis (Classic) Non-IgE Mediated Anaphylaxis (Formerly “Anaphylactoid”) Frequency Most common type Less common Immune Mechanism IgE antibody-mediated hypersensitivity
Cervical Spine injury Etiology 1. Traumatic Causes (≈80%) Motor vehicle accidents (most common) Falls (especially in elderly) Sports injuries Violence (gunshot, stab wounds) Industrial accidents 2. Non-traumatic Causes Tumors (intramedullary/extramedullary) Infections (TB, epidural abscess) Ischemia/infarction (e.g., aortic surgery) Degenerative diseases (cervical spondylotic myelopathy) Inflammatory (transverse myelitis, MS) Anatomy Region Vertebral Levels Function Loss Cervical (C1–C8)
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If Internal Medicine Is Foreplay, Then Critical Care Is the Climax Part 1—Which Books Should You Read? The answer depends on what stage of training you are in. 1. Irwin & Rippe’s Intensive Care Medicine — The Bible Because it doesn’t merely tell you what to do—it explains why. The strength of Irwin lies in
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Ventilator Asynchronies Ventilator asynchrony refers to a mismatch between the patient’s neural respiratory drive and the ventilator’s delivered breath (trigger, flow, cycling, or mode). It leads to: ↑ Work of breathing (WOB) Patient discomfort Sedation escalation Delirium Prolonged mechanical ventilation Increased ICU stay Possibly increased mortalityAsynchrony is present in up to 20–40% of ventilated ICU
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WEANING FROM MECHANICAL VENTILATION WHY WEANING IS IMPORTANT Complications of Delayed Weaning Ventilator-associated pneumonia (VAP) Diaphragmatic disuse atrophy (VIDD) ICU-acquired weakness (CIP/CIM) Increased ICU length of stay Higher mortality Increased sedation exposure Complications of Premature Weaning Reintubation Aspiration Hemodynamic instability Increased mortality (especially if reintubation within 48 hrs) CLASSIFICATION OF WEANING 1️⃣ Simple Weaning Successful
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Tracheostomy Emergencies Classification Early (<7 days) Late (>7 days) Hemorrhage Tracheo-innominate fistula Tube obstruction Granulation tissue Accidental decannulation Tracheal stenosis False passage Tracheomalacia Pneumothorax Tracheoesophageal fistula Surgical emphysema Infection Tube displacement Mucus plugging Wound infection Tube fracture “DOPES Approach” Cause What to Check Management D Displacement ETT/tracheostomy tube displaced, accidental extubation, endobronchial intubation Check tube
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Acute Respiratory Distress Syndrome (ARDS) ARDS (Acute Respiratory Distress Syndrome) is a diffuse inflammatory lung injury characterized by: Increased alveolar-capillary permeability Non-cardiogenic pulmonary edema Severe hypoxemia Reduced lung compliance Leading to acute respiratory failure requiring oxygen or ventilatory support. Berlin Definition (2012) — Diagnostic Criteria Criterion Requirement Timing Within 1 week of clinical insult or
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