Cardiopulmonary arrest is defined as an acute termination of blood flow and ventilation in a patient that is fatal when untreated. Cardiopulmonary resuscitation aims to achieve resumption of spontaneous circulation using a combination of basic life support and advanced life support techniques, including but not limited to, intravenous fluid therapy. Depending on the volumetric status of the patient, different amounts and types of fluid are used to aid the body in regaining adequate blood circulation in order to prevent oxygen-depleted tissue death, or hypoxic ischemia. Patients with certain electrolyte imbalances, acidemia or toxin ingestion have been seen to benefit most from targeted advanced life support therapy and research suggests specific indications should be present before layering extensive techniques along with basic life support.

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