Diagnostic Tests/LAB VALUES Flashcards
What diagnostic test for cardiac issues gives information on the ejection fraction?
cadiac catheterization
What is a central line, and what does it measure?
central line = swan-ganz catheter
- inserted throguh vessels into R side of heart
- measures CVP, PA (pulmonary artery pressure), and PCWP
What is the primary measure of myocardial infarction?
rise and fall of cardiac troponin >99th percentile
Along with troponin measurement, what other identifiers of MI must be present?
1) ischemia symptoms
2) ST changes on ECG
3) pathological Q waves
4) new loss of viable myocardium and/or new wall motion abnormality on imaging
5) evidence of intracoronary thrombus via catheterization
T/F: CK or CPK decreases with myocardial infarction.
false, CPK increases; peaks between 12-24 hours
What are normal PaCO2 and PaO2 levels?
PaO2 = 90-100mmHg
PaCO2 = 35-45mmHg
Typical pH of blood?
7.35-7.45
If your patient has a blood pH of 7.8 and has been diagnosed with metabolic alkalosis, what symptoms might you see?
vomiting, potassium depletion, diuretics, volume depletion
In your patient with COPD, what might you expect their PaCO2 levels to be, increased or decreased? Symptoms?
increased, see hypoventilation
With a pulmonary embolism, what might you expect to see PaCO2 levels at, an increased or decreased state?
increased - see hyperventilation, anxiety
What is a normal prothrombin time?
11-15s
- increase in this means more difficulty clotting
What is a normal PTT time?
25-40s
What is a typical INR?
.9-1.1 is target ratio level
What does an INR of 3.0 mean?
they’re not clotting as quickly
What does a high CRP indicate?
associated with inflammation and infection
CRP = c-reactive protein, normal value = <10mg/L
