Flashcards in Foundations- Hypotension & Shock Deck (15):
Low blood pressure:
SBP<90 OR decrease in SBP of >40 mmHg OR
Physiologic condition of inadequate systemic tissue perfusion
=decreased O2 delivery--> cellular hypoxia and metabolic malfunction
Define Systemic Vascular Resistance (SVR)
Resistance to blood flow offered by ALL of the systemic vasculature
What is SVR influenced by?
3. Blood viscosity
Clinical presentation of Shock
-Oliguira (decreased urine output)
-Cool, clammy skin
Sx's of end-organ dysfunction
-Irreversible organ damage
What does the central venous pressure (CVP) measure?
-Pressure in the right atrium
-Correlates to preload or overall volume status
When would you use a Swan-Ganz catheter over a normal central line?
Patients in cariogenic shock
What is the normal pulmonary capillary wedge pressure (PCWP)?
What is normal CP?
What is normal systemic vascular resistance (SCR)?
Define Hypovolemic Shock
Inadequate intravascular volume--> leads to decrease CO and decrease oxygen delivery
Etiology of Hypovolemic Shock
3. Internal hemorrhage
2. Protracted nausea, vomiting, diarrhea
4. Acute pancreatitis