Exam 2 Flashcards
What is the criteria for SIRS
two or more of the following: temp greater than 38 or less than 36 HR greater than 90bpm RR greater than 20 or PaCO2 less than 32torr WBC >12k or < 4k More than 10% immature (band) forms
What puts a pt at high risk for SIRS
ANY injury that causes hypoperfusion. Not just infection
What are the 4 reasons for shock
alteration in blood volume
decrease in contractility of the heart
any alteration in blood flow
any alteration in vascular resistence
What is shock
decreased tissue perfusion with impaired cellular metabolism. Causes an increase in metabolic needs and O2 demands
Describe the initiation stage of shock
hypoperfusion inadequate O2 delivery Decreased CO Increased sympathetic NS activity difficult to determine, not incredibly pronounced
What are the stages of shock?
initiation
compensatory
progressive
refractory
Describe the compensatory stage of shock
reversible neural, endocrine, and chemical compensation. blood is shunted toward vital organs initially bounding pulses then weaker Increase HR decrease Urine output
Describe the progressive stage of shock
hypoperfusion
decreased cap blood flow
aerobic to anaerobic metabolism!! - hypermet state
lactic acid production - aggressive FR above 4.0
Low BP, decreased CO, decrease contractility
Intravascular to interstitial fluid shift
What is the definitive lab test for shock and what are the values?
Lactic acid testing - shows us overall picture of imp tissue perfusion
aggressive fluid resuscitation above 4.0
Refractory stage
IRREVERSIBLE dysrythmias endothelial damage cerebral ischemia AKI thrombis formation
What is the Parkland burn shock formula for the FIRST 24hrs
4mL x kg x TBSA
Give first half over 8 hours, then second half over next 16hrs
A pt is admitted to the ED with severe burn injuries. No fluids were started pre hospital. What solution would you hang first
Lactate Ringers - isotonic crystalloid
For BURN shock
A client is just reaching 24hrs post admit for severe burn injury. The bag of lactate ringer’s is finished infusing. What do you do?
Obtain colloid containing fluid such as dextrose in water + potassium as per the second 24hr parkland formula
What is the urine output goal for a pt in shock?
- 5-1.0mL/kg/hr for adults
1. 0mL/kg/hr for children
A pt presents w a burn injury that appears wet and weeping and blanches briskly. The pt is in terrible pain. What would you consider this burn and how long would you tell the pt before it heals
A partial thickness burn - 2nd degree
it will heal in 7-10days can be up to 21