What is agonal gasping?
Sighing respiration refers to an abnormally deep and large breath inserted intermittently into the normal respiratory rhythm, often accompanied by audible sighing sounds. Agonal gasping is an even more critical condition and represents a hallmark breathing pattern preceding cardiac arrest. At this stage, the patient's heart has stopped beating and there is no effective blood circulation, necessitating immediate high-quality cardiopulmonary resuscitation (CPR).
Agonal gasping typically describes the breathing pattern observed in critically ill patients during the terminal phase of life. At this point, normal respiratory rhythm is lost. Patients may exhibit marked swelling in the limbs and significant ascites, primarily due to severe malnutrition. They also commonly experience persistent coma with no response to verbal stimuli. Because such patients cannot consume sufficient energy, the body reduces metabolic demands by entering a state of prolonged stupor or coma, attempting to conserve energy and sustain vital functions for as long as possible.
Patients exhibiting agonal gasping should undergo continuous vital sign monitoring, maintain a patent airway, and receive oxygen therapy. In cases of severe respiratory failure, mechanical ventilation is required to support breathing.