Fluids & Random Shit

Question 1

What is the major electrolyte in colonic feculent fluid?

Answer 1

Potassium - 65 mEq/L

Question 2

What is the physiologic response to hypovolemia?

Answer 2

Na/H2O retention via renin –> adolsterone, H2O retention via ADH

Question 3

Why is CO2 used for laparoscopy?

Answer 3

CO2 has better solubility in blood, and thus less risk of gas embolism; noncombustible

Question 4

what are types of shock?

Answer 4

hypovolemic
cardiogenic (no forward flow)
neurogenic (no SVR)
septic (cytokines & vascular permeability)
non-cardiogenic / obstructive (PE/tamponade/ chronic pericarditis / pneumothorax)

Question 5

what are causes of dec. UOP?

Answer 5

• hypovolemia
• urinary retention
• foley catheter malfunction
• cardiac failure
• MI
• ATN
• ureteral/ureteral injury
• abdominal compartment syndrome
• sepsis

Question 6

resuscuitation 3:1 rule

Answer 6

replace 3x the amount of fluid lost since less than 1/3 will remain intravascular after 1 hr

Question 7

what are baseline insensible losses in 1 day?

Answer 7

1.5 L - unmeasurable stuff

Question 8

hyponatremia thresholds

Answer 8

nL 135 - 145 mg

Question 9

120-125 - hyponatremia

Answer 9

serious, hot symptoms, not always present

Question 10

< 120 hyponatremia isgns

Answer 10

symptomatic

Question 11

what does ADH respond to?

Answer 11

high osmolarity / hypovolemia

Question 12

what does aldo respond to?

Answer 12

low volume