(P)Laboratory Diagnostic Errors Flashcards
depend heavily on laboratory test results, yet errors can occur at any at any stage
Medical Diagnoses
TOF
Knowing the causes
and types of errors can help reduce their occurrence.
T
Occurs before testing
Pre-analytic errors
Occur during testing
Analytical Errors
Occur after tasting
kabaklaan (Post-Analytical Errors)
Accounts for 46-68% laboratory errors
Pre-analytic errors
Accounts for 7-13% laboratory errors
Analytic errors
Accounts for 18-47% lab errors
Post-analytic errors
ranks second (pre ang first)
CAUSES OF LABORATORY DIAGNOSTIC ERRORS
inaccurate patient identification;
ordering the wrong test
Pre-Analytical Errors
CAUSES OF LABORATORY DIAGNOSTIC ERRORS
improper specimen collection & transportation, and receipt handling and preparation of sample
Pre-Analytical Errors
CAUSES OF LABORATORY DIAGNOSTIC ERRORS
instrumentation problems and
human errors during testing
Analytical Errors
CAUSES OF LABORATORY DIAGNOSTIC ERRORS
inappropriate samples e.g. incorrect blood tubes for particular analyses, calibration errors, instrument malfunctions, the presence of interfering substances, and the failure to verify the results
Analytical Errors
CAUSES OF LABORATORY DIAGNOSTIC ERRORS
result interpretation and communication errors reports being sent to the wrong health care provider
Post-Analytical Errors
CAUSES OF LABORATORY DIAGNOSTIC ERRORS
- long turnaround times,
- missing reports,
- improper interpretation of test results by healthcare providers
Post-Analytical Errors
In one particular study that was done in hematology and the chemical pathology section or the chemistry section, what was the number 1 pre-analytic error observed?
unlabeled sample
List other errors observed in the study done in hematology and chemical pathology apart from unlabeled samples
- clotted sample
- samples that are diluted
- wrong medical record number
- samples that are
hemolyzed - incorrect tube/ QNS
- wrong anticoagulant to blood ratio
In the article presented, how many diagnostic errors are recorded each year?
18 million/yr
slay purr
TOF
Diagnostic errors are not a major concern and shouldn’t be addressed
F
sis?
COMMON ERRORS IN PRE-ANALYTICAL PHASE
E-request, Label (Bar Coding) All
Sample
match the preventive act with the error
Missing sample and
or test result
COMMON ERRORS IN PRE-ANALYTICAL PHASE
- Proper ID of patient
- Use Patient or Hospital Name Tag
- Ask for Assistance from nurse or Patient’s Watcher
match the preventive act with the error
Wrong or missing
identification of
patient
COMMON ERRORS IN PRE-ANALYTICAL PHASE
Monitor blood transfusion
match the preventive act with the error
Contamination from
infusion route
COMMON ERRORS IN PRE-ANALYTICAL PHASE
- Trained phlebotomist
- Clean and dry test tube and use
disposable syringe
match the preventive act with the error
Hemolyzed, Clotted,
and insufficient
sample
COMMON ERRORS IN PRE-ANALYTICAL PHASE
- Use the Right test tube with appropriate anticoagulant with the right test requested
- Use a sterile container if required
match the preventive act with the error
Inappropriate
Containers
COMMON ERRORS IN PRE-ANALYTICAL PHASE
- Check the vacuum of the test tube
- Fill-in the test-tube with blood according to the required amount
match the preventive act with the error
Inappropriate blood
to anticoagulant
ratio