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The Brain Trauma Foundation's Guidelines for the Management of Severe Head Injury state that the use of prophylactic hyperventilation after traumatic brain injury (TBI) should be avoided because it can compromise cerebral perfusion. The objective of this study was to assess the prevalence of unintentional hyperventilation.
Methods:
A prospective evaluation of all intubated trauma patients with a diagnosis of TBI was performed. Patients with signs of impending hernia-tion were excluded.
Results:
Forty patients were included in the study. The average Glasgow Coma Scale (GCS) was 6.3. Of these, 28 patients (70%) were unintentionally hyperventilated. Eleven (39%) of the hyperventilated patients died or were discharged in a persistent vegetative state. Of the remaining 12 patients who experienced normal ventilation, three patients (25%) died or were discharged in a vegetative state (p = ns) (Table 1).
Conclusion:
Hyperventilation was common after TBI. However, patients ventilated to a normal PaCO2 were significantly more acidotic. Prehospital personnel should undergo educational training after development of strict ventilation protocols for patients suffering TBI.
It has been stated that the Franco-German Emergency Medical Services System (FGS) has considerable drawbacks compared to the Anglo-American Emergency Medical Services System (AAS):
1. The key differences between the AAS and the FGS are that in the AAS, the patients is brought to the doctor, while in the FGS, the doctor is brought to the patient.
2. In the FGS, patients with urgent conditions usually are evaluated and treated by general practitioners in their offices or at the patient`s home; initially, very few approach an emergency department.
3. Emergency patients with life-threatening trauma or disease are treated by emergency physicians at the scene and during transport. Paramedics often are first to arrive at the scene, and until the emergency physician arrives at the scene, are allowed to defibrillate, to intubate endotracheal-ly, and to administer life-saving drugs (epinephrine endotracheally, glucose intravenously, etc.).
4. Prehospital emergency physicians treat patients at the scene and during transport.
5. Emergency patients are guaranteed to be reached by an appropriate emergency vehicle and a respective crew within 10 minutes in 80% of the responses and within 15 minutes in 95% of cases.
6. The FGS deploys qualified emergency physicians assisted by qualified paramedics as prehospital intensive care providers; extended immediate care is standard. Total Prehospital Times (TPT) and scene times only are minimally longer than in the AAS.
7. Emergency Medicine is recognized as a supra-specialty to the base specialties. Specific training programs exist for emergency physicians, medical directors of emergency medical services systems (EMSS), and chief emergency physicians (CEP).
8. Resuscitation attempts are carried out not only by anesthesiologists, but also by internists, surgeons, pediatricians, etc. Emergency medicine encompasses cardiopulmonary resuscitation (CPR) and shock cases, and patients with an acute myocardial infarction, stroke, poly-trauma, status asthmaticus, etc. Emergency patients are admitted directly to emergency departments of the hospitals, which, depending upon the size of the hospital.
9. The incidence of life-threatening trauma victims has decreased to <10% in the FGS. Of a total of 830,000 deaths/year, fatal trauma cases ranked the lowest at 4%.
10. Survival figures on cardiac arrest (asystole, ventricular fibrillation/ventricular tachycardia (VF/VT), pulseless electrical activity (PEA), etc.) reported in the German EMSS correspond to those in Europe and the United States.
11. Paramedic training is characterized by a two-year program followed by a theoretical and a practical examination.
12. Paramedics and emergency physicians-in-training are supervised at the scene and during transport. Quality assurance (Q/A) constitutes an integral and legally compulsory part of the EMSS.
13. In the majority of cases, the emergency patients are evaluated and treated by the respective specialties without delays caused by patient transfer to other hospitals.
14. The FGS does not require a greater number of ambulances and/or personnel than does the AAS.
15. The German healthcare system creates less expenses/ capita than the does the U.S. system at a similar level of quality of care.
16. Emergency procedures are carried out by anesthesiologists, emergency physicians, surgeons, internists, and other specialists.