76 results
Causes of Falsely Low Oxygen Saturation - Discordant SpO2 & PaO2 
 • Motion
 • Low
Causes of Falsely ... BrighamChiefs #Falsely
Arterial Line - Square Wave Test 
The arterial line can measure BP inaccurately unless properly calibrated.
OVERdamped = falsely ... UNDERdamped = falsely
The differential diagnosis for an elevated MCHC (mean corpuscular hemoglobin concentration) includes:

Conditions with Abnormal RBCs:
 •
opacification leads to a falsely
Medications that Can Cause False Positives on Drug Tests

Urine drug screens (UDSs) are simple to use,
that Can Cause False ... Amphetamine false ... Cannabinoid false ... Benzodiazepine false ... Barbiturates false
Several artifacts can cause significant and potentially misleading alterations to measured RBC parameters: 
1. Old samples
Lipemia causes a falsely ... reading, and hence a falsely ... again leading to a falsely ... Autoagglutination causes a falsely ... count, and hence a falsely
Causes of False Elevation and Reduction in HbA1c

== False Elevation ==
Decreased RBC turnover 
• Iron, B-12,
Causes of False ... in HbA1c == False ... Transfusions == False ... Transfusions #False
Adrenal Insufficiency Diagnosis Algorithm
Test 1: Baseline AM Cortisol 
 - Beware of major normal value
 -
hydrocortisone - Falsely
Arterial Lines & Waveforms
Arterial lines permit continuous invasive blood pressure measurement, frequent arterial blood sampling, and
• OVERdamped = falsely ... UNDERdamped = falsely
Arterial Lines - Abnormal Arterial Waveforms:
 - Underdampened: Falsely High BP - Adjust monitor filter settings
Underdampened: Falsely
C-REACTIVE PROTEIN
Discovered by Tillett & Francis in 1930. First identified as a substance in the serum
as NSAIDs will falsely ... reduce CRP levels falsely ... or illness can falsely