Electrolyte and Internal Environment Imbalances in Emergencies (Spanish Edition)

Abstract

Electrolyte and internal environment disorders represent some of the most frequent and clinically significant challenges in emergency and critical care settings. Their impact can be abrupt, severe, and life-threatening. In many cases, a subtle change in sodium, potassium, chloride, or water balance may determine the difference between stability and rapid clinical deterioration. For this reason, the ability to recognize, interpret, and intervene promptly is a core skill for physicians who care for critically ill patients, whether in emergency departments, intensive care units, or high-dependency hospital settings.This book was conceived as a practical and accessible clinical tool. It is designed to integrate physiological understanding with bedside decision-making, providing a clear bridge between foundational science and real-time therapeutic action. Each chapter has been developed collaboratively by clinicians actively engaged in emergency and critical care practice across various healthcare systems. Their contributions reflect not only scientific knowledge, but the lived experience of caring for patients in contexts where urgency, uncertainty, and limited time demand clarity and precision.While electrolyte and internal environment alterations are deeply rooted in complex physiology, our goal has been to make their clinical reasoning straightforward. Diagnostic approaches, pathophysiological mechanisms, and treatment strategies are presented in a concise and applicable manner. We emphasize concepts that are essential for rapid assessment, careful correction, and prevention of iatrogenic harm.This work is dedicated to the medical professionals who stand at the bedside in the most critical moments, and to the patients whose resilience gives meaning to every clinical effort. It is our hope that this book will serve as a support, a guide, and a companion in the demanding and noble responsibility of emergency medicine and critical care.