ABG/heme Flashcards
(69 cards)
Low CO, low CVP, low PCWP, high SVR, SVO2 low
Hypovolemic shock
Low CO, high CVP, high PCWP, SVR high, low SVO2
Cardiogenic shock
Low CO, low CVP, low PCWP, low SVR, low SVO2
Distributive shock or neurogenic shock or anaphylaxis shock
CVP normal
0-7
Right atrial pressure
Preload measurement
SVR
Resistance of blood flow in body
BP
After load
SVO2
Brown port on a swan
% of o2 bound to hemoglobin that returns to right side of the heart
60-80 normal
In shock this is normally higher and associated with higher lactate-tissue is not able to use, bad sign
PAP
Systolic and diastolic numbers
“Quarters over dimes”
Normal 15-25 systolic
Normal 8-15 diastolic
PCWP
Pulmonary capillary wedge pressure
Indirect of left atrial pressure
Normal 6-12
Ballon inflate at end of swan
Increase- CHF, pulmonary edema, valve stenosis and regurg, HTN
Decrease- Hypovolemia
Rarely used due to complications
Pulmonary artery rupture, infarction, air embolism, arrhythmias
CO/CI
CO 4-8 amount of blood the heart pumps through circulation in one minute
CI 2.6-4.2, refers to CO in relation to BSA
PT/INR
Measures extrinsic pathway (TF and FVII) and common pathway Factors 2, 5, 10, 1
Prolonged- vitamin K deficiency, liver disease; deficiency of any factors like 7, 10, 2, 5, use of warfarin
aPPT
Intrinsic pathway with factors 12, 11, 9, 8
And common pathway factors 2, 5, 10, 1 and monitoring of heparin
Prolonged may be due to deficiency or inhibition in any coagulation factor except 7
Monitoring of heparin
Thrombin time
Measures final step In clotting cascade
Conversation of fibrinogen to fibrin
Prolonged in heparin use, direct thrombin inhibitors, fibrinogen degradation products, disorder of fibrinogen
D dimer
Helpful in excluding if no RF (DIC, DVT, PE, malignancy, inflammation, hyper coagulation; trauma, thromboembolism)
If positive not enough diagnostics
If negative can aid in exclusion
Fibrinogen levels
Used for bleeding disorder diagnosis and monitoring of DIC
Decreased in liver disease, DIC, fibrinolytic therapy, congenital
Anti factor Xa
May be used to evaluate effects of anticoagulant from agents with direct or indirect inhibition of factor Xa activity like heparin, LWMH, direct factor Xa inhibitors
Prolonged aPTT but normal PT/INR
Von wilderbrands disease
Factor 8,9, 11, 12 deficiency
Pre kallikrein
HMW kininogen
Heparin
Lupus anticoagulant
Prolonged PT/INR, normal aPTT
Liver disease
Vitamin K deficiency
Warfarin
Prolonged aPTT and prolonged PT/INR
Issues in the common pathway
Deficiency of prothrombin, fibrinogen; factor 5 or 10
Combined factor deficiency
Liver disease, DIC; over anticoagulant with warfarin
Draw a thrombin time-if normal issue lies with factor issues in 2,5, or 10
Normal aPTT and PT/INR but still bleeding
Thrombocytopenia
Platelet dysfunction
Von wilderbrand disease
Neutropenia fever coverage
Anti pseudo beta lactam-cefepime, meropenem, imipenem-cilastatin, piperacillin-tazobactam
May add aminoglycoside, fluoroquinolones, or vanco if hypotension, mental status change, focal findings like PNA or cellulitis or resistance is suspected or proven
Low risk OP can do coronet beta lactam like augmentin
Tumor lysis syndrome criteria
Uric acid greater than 8 or 25% increase above baseline
Potassium greater than 6 or 25% increased above baseline
Phosphorus greater than 6.5 or 25% increase above baseline
Calcium less than 7 or 25% decrease from baseline
Do not correct calcium without correcting phosphorus first
Tumor lysis syndrome TX
Monitor lytes 4-6 hrs
Rasburicase (elitek) IV can cause RBC hemolysis, hypersensitivity, methemoglobinemia do not use with bicarbonate
IV hydration greater than 3000 ml per day
Loop diuretics
Cardiac monitor
Phosphate binders
Dialysis
Tx hyperkalemia
Allopurinal for prevention along with IV hydration
Cyclophosphamide (cynical) ADE
Alopecia
Myelosuppression
Hemorrhagic cystitis
Cardiac toxicity in high doses
Ifosfamide (ifex) ADE
Alopecia
Myelosuppression
Hemorrhagic cystitis
Neurotoxicity