PHTLS Chuck Practice Questions and Answers

Average EMS response time and time on scene *6-8 min en route *8-10 onscene 4 components of ethics (agreed upon set of moral principles) *autonomy *nonmaleficence *beneficence *justice Criteria for informed consent *decision making capacity *ability to communicate their understanding of the situation *ability to give consent or refusal voluntarily *give a refusal or consent to treatment Difference between POLST and DNR *DNR is for resuscitation only. *POLST if more for general end of life care How long can heart/brain, kidneys/liver/GI, muscle/bone/skin go without oxygen *heart/brain/lungs-4-6 min *kidneys/liver/GI-45-90 min *muscle/skin/bone 4-6 hrs What does aerobic metabolism use for fuel Oxygen What does anaerobic metabolism use for fuel Stored body fat Quick formula for MAP *DIA + 1/3 sysbp Vasovagal (psychogenic) shock *when vagus nerve stimulated causing bradycardia and vasodilation Septic shock pathophysiology *cytokines released in response to infection cause damage to blood vessel walls and leakage of fluids into interstitial space. Describe how shearing forces work, and common ones seen in mvc *One structure moves faster than the other *spleen, kidney, small intestine all tear away from points of attachment *aorta tears away from defending arch which is tied to spine