perioperative– category –
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perioperative
🫁 What is “Dead Space”?
Dead space explained: anatomic, alveolar, and physiologic types, VD/VT, PaCO₂–ETCO₂ gradient, with clinical notes on PE, pneumonia, and COPD (V/Q mismatch). -
perioperative
🩺 Non-invasive Blood Pressure (NIBP) Monitoring
Basics of non-invasive blood pressure (NIBP): Korotkoff vs oscillometric methods, cuff size/position, ASA standards. For exam prep. -
perioperative
🫀 Pacemakers basic for Residents & Perioperative Staff
Clear explanation of pacemaker basics, perioperative checks, intraoperative settings, electrosurgery precautions, and troubleshooting. For anesthesiology board and perioperative team exams. -
perioperative
Are Difficult Mask Ventilation and Difficult Intubation the Same?🤔
Are difficult mask ventilation and difficult intubation the same? Learn key differences, risks, and ASA 2022 airway guidelines. -
perioperative
How Long Does an Oxygen Cylinder Last? ~ Will It Last an Hour? Oxygen Cylinder Math Made Easy ~
How long does an oxygen cylinder last? Learn easy formulas with examples, cylinder factors, and safety margins explained clearly. -
perioperative
🫁 Why Do We Routinely Give Oxygen After General Anesthesia?🤔
Oxygen therapy after anesthesia is routine, but why? This article explains the mechanisms of postoperative hypoxemia, why oxygen is supportive not curative, and the risks of excessive oxygen flow. -
perioperative
🫁 Functional Residual Capacity (FRC):What’s “functional” about it?🤔
Functional Residual Capacity (FRC = RV + ERV) is the lung volume at end-tidal expiration, where lung and chest wall forces balance. It acts as an intrathoracic oxygen tank, crucial for safe apnea. General anesthesia, obesity, pregnancy, and supine positioning all reduce FRC, predisposing patients to atelectasis and hypoxemia. Preoxygenation and PEEP help preserve FRC and extend safe apnea time. -
perioperative
💉 Epinephrine in Anaphylaxis: Why and How?🤔
Why epinephrine for anaphylaxis? This article explains the mechanisms—α1 vasoconstriction, β1 cardiac support, β2 bronchodilation, and mediator suppression. We also review administration routes, pharmacokinetics, and safety considerations, with reference to major guidelines. -
perioperative
☢️ What’s the Difference Between Sievert(Sv) and Gray(Gy)?🤔
Gray (Gy) and Sievert (Sv) are both J/kg, but serve different purposes. Gy measures absorbed radiation energy, used in therapy and deterministic effects. Sv applies weighting factors for radiation type and organ sensitivity, estimating stochastic risk, used in protection and regulations. Includes analogy, quick reference table, and key ICRP dose limits.