Random Factoids Flashcards
Lactate level and sepsis
Q point >2.5 increases mortality by 10%
O2 content dissolved in plasma equation
[1.34 x hgb x (SaO2/100)] + 0.003 x PO2
- Tissues draw o2 from plasma 1st, the from Hgb
- can be used with Fick formula as well to trend SvO2 & amount delivered.
Polycythemia
Increased RBC production in response to COPD hypoxia
-process also increase 2-3DPG
Ground glass opacities chest X-ray
Infection, pulmonary edema, cellular inflammation
Increased Dead Space vs Intrapulmonary shunt
Increased death space: no perfusion w/ ventilation
Intrapulmonary shunt: no perfusion or ventilation
Pleural Tube Water Seal fluctuation: spintaneous vs mechanical
Spontaneous:
- inhalation: water level rises (negative pressure)
- expiration: water level falls (positive Pressure)
Mechanical
- inhalation: falls (positive)
- exhalation: rise (neutral)
Leukocytosis
Indicates infection
SVO2 representation
O2 reserve, left over after tissue extraction
MAP representation
Organ tissue perfusion
Histotoxic hypoxia specific poisons
CO, cyanide, alcohol
Most common cause of Anaphylaxis
NMBA
Useful amount of consciousness w/ Rapid decompression
Greater than 30k ft msl - always choose the shortest amount of time.
As altitude increase as q 1000 ft, temps:
Decrease 2 degrees C
Glycogen stores limit
Shivering & producing heat.
Fresh water drowning pt
Systemic washout of surfactant: atelectasis
Salt water drowning pt
Hyper osmolar shift of fluid and blood products into pulmonary spaces. Treat as you would ARDS: low Vt, high f, high peep
Fever & Diaphoresis & Na levels
Decrease water through skin = Hypernatremic
Parathyroid hormone
Regulates Ca and phosphorous.
Less parathyroid=less Ca
-Ca and phosphorous gap have inverse relationship
Most common cause of increased Hct
Dehydration… Will also not increases Na levels
S/s hyponatremia
Convulsions, apprehension, abdominal cramps, diarrhea
Oliguria & sticky mucous membranes indicate high or low NA?
High Na
Increased urine specific gravity occur in?
SIADH, & dehydration
Urine Creatine Clearance directly reflects:
GFR (glomerular filtration rate)
Corrected vs uncorrected anion gap
Corrected: factoring of K (most accurate)
Two common tests for hypocalcemia
Chvostek’s & Trousseau’s
Hypocalcemia S/S
Numbness/tingling perioral, muscle cramps/spasms, irritability / fatique.