The tongue is the most common airway obstruction in an unconscious patient.

Insertion an oropharyngeal airway helps keep the patient’s tongue from falling to the back of the pharynx, causing an airway obstruction.

The oropharyngeal airway is sometimes called an OPA or simply an oral airway.

Indications for using an oral airway.

Contraindication for an oral airway and an alternative airway that can be used for patients with an intact gag reflex.

Measuring an OPA and possible complications from inserting one that's too small or too large.

Two techniques to properly insert an OPA.

The use of an oral airway during CPR.

The use of an OPA as a bite block after a patient has an advanced airway placed.

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Hypoxia is a state of low oxygen levels in the blood.

Determining hypoxia using a pulse oximeter or arterial blood gasses (ABGs).

A goal of ACLS is to recognize signs of hypoxia and provide timely treatment to prevent an arrest.

Examples of some things that might lead us to think of hypoxia as a cause of cardiac arrest.

Why we should not rely on pulse ox to give accurate readings during CPR.

Delivering ventilations with near 100% oxygen concentration using a BVM attached to supplemental O2 and a reservoir.

Using end tidal waveform capnography to assess the quality of CPR.

Changes to ventilation rates, tidal volume, and O2 concentration affects a patient's oxygen, carbon dioxide, and pH.

The danger of excessive ventilation of a patient in cardiac arrest.

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ECG characteristics of supraventricular tachycardia (SVT) vs. sinus tachycardia.

Signs & symptoms that indicate a patient is unstable.

Delivery of a synchronized shock for the treatment of unstable SVT using a biphasic vs monophasic defibrillator.

Consideration for team safety while performing synchronized cardioversion.

Actions to take immediately if an unstable patient we’ve cardioverted goes into a pulseless rhythm.

Management of stable patients in SVT.

For more on narrow complex tachycardias, check out the pod resource page at passacls.com.

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Good luck with your ACLS class!