ventilation

Oxygen Therapy Systems

When discussing options for hypoxemia, it seems like there are so many noninvasive oxygen delivery systems! Nasal cannula, high flow nasal cannula (HFNC), non-rebreathers (NRB), and more are routinely used in the settings I’ve...

Volume Control (VC) Versus Volume Control Auto Flow (VC-AF)

Assist control (AC) ventilation is traditionally broken down into two flavors - pressure-control (PC, an inspiratory pressure is set) and volume-control (VC, a target tidal volume in set). Both styles of ventilation allow parameters...

Automatic Tube Compensation (ATC)

Daily spontaneous breathing trials (SBT) for patients receiving mechanical ventilation are considered standard-of-care across intensive care units (ICUs); however, when we discuss weaning strategies, there's a bit more variability. Many intensivists opt for putting...

Basics Of Mechanical Ventilation

Understanding mechanical ventilation is a fundamental part of intensive care and perioperative medicine. Here's an overview of the basics of mechanical ventilation. Keep in mind that clinically, there are many more things to consider,...

Positive End Expiratory Pressure (PEEP) and Cardiac Output

One of the cardiopulmonary challenges I constantly face as a cardiothoracic anesthesiologist and intensivist is balancing positive end-expiratory pressure (PEEP) with cardiac output (CO). CO is related to the heart rate (HR) and stroke...

High Flow Nasal Cannula (HFNC)

High flow nasal cannula (HFNC) systems allow us to deliver warm, humidified oxygen at flow rates as high as 60 liters/min through small, pliable nasal prongs. The cannula itself is fit into the nares...

Interpreting Capnograms

Continuous capnography (measurement of carbon dioxide) is the gold standard for confirming endotracheal tube placement but is also utilized in the operating room and intensive care unit (ICU) to help guide ventilation in conjunction...

Hyperventilation And The Bohr Effect

Often times we hyperventilate patients in the operating room with the justification that a low PaCO2 will suppress a patient's desire to take spontaneous breaths during surgery (ie, less of a chance the patient will...

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