Hydrogen ions is on one of the Hs in ACLS's H&T reversible causes of cardiac arrest.  When considering hydrogen ions as a cause, what we’re looking at is the patient’s pH, or acid/base balance, and conditions that affect it. The body's normal pH. Using patient history, ABGs, & labs to determine acidosis or alkalosis. Common conditions/causes that may lead us to suspect acidosis. Common conditions/causes that may lead us to suspect alkalosis. Correcting acidosis by changing the rate of ventilations. The indications, dose, and considerations for use of Sodium Bicarbonate. Treatment of alkalosis depends on the type (metabolic or respiratory) and is aimed at correcting the underlying cause. Other FOAMed podcasts that cover acid/base balance and conditions that cause acidosis or alkalosis can be found on the Pod Resource Page at PassACLS.com. Connect with me: Website:  https://passacls.com @PassACLS on X (formally known as Twitter) @Pass-ACLS-Podcast on LinkedIn Give back & help others. Your support will help cover the monthly cost of software and podcast & website hosting. Donations made via Buy Me a Coffee at https://buymeacoffee.com/paultaylor are appreciated. Good luck with your ACLS class!