Prehospital Use of Ketamine: Effectiveness in Critically Ill and Injured Patients.

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      Background: The military use of ketamine is well established. The benefits of prehospital civilian use have not been extensively reported.Methods: A retrospective review was performed of patients with prehospital ketamine use in Mayo One's air and critical care ground transport.Results: The medical records were reviewed from 2014 to 2016 to assess the efficacy of Ketamine. During this time frame, 158 (167 instances) patients were treated with ketamine for analgesia (38%), sedation (44%), or procedural (18%) use. The patient population had a mean age of 49 (range: 1-100), with 105 (67%) male patients. Indications included trauma (69%), which was further broken down into blunt (57%), penetrating (4%), and miscellaneous (8%), and medical illness (31%). The mean ketamine dose was 52.6 mg (range: 5-200 mg) via intravenous route. Ketamine was utilized in 61% of patients after other medications were ineffective. Overall success rate was 98%. Mean pain scale before and after ketamine use was 9/10 and 3/10, respectively. Ketamine use increased yearly from 21 (13%) in 2014, 56 (36%) in 2015, and 81 (51%) in 2016.Conclusion: Prehospital ketamine use is effective alone or in conjunction with other medications for analgesia, sedation, and procedural use in trauma and critically ill patients with minimal hemodynamic and respiratory consequences. [ABSTRACT FROM AUTHOR]