When cardiac arrest strikes, every second counts. Healthcare providers must quickly identify and address the underlying causes to give patients the best chance of survival. The H's and T's of ACLS represent a systematic approach to identifying reversible causes of cardiac arrest, providing a crucial framework that can mean the difference between life and death. Understanding these reversible causes is essential for every healthcare professional involved in emergency cardiac care. While high-quality CPR and defibrillation remain the cornerstone of cardiac arrest management, addressing the H's and T's can significantly improve patient outcomes and increase the likelihood of return of spontaneous circulation (ROSC) . Understanding the H's and T's Framework in ACLS The H's and T's mnemonic serves as a mental checklist during cardiac arrest scenarios. This systematic approach ensures that healthcare teams don't overlook potentially treatable conditions...