OnSite Troponin I Rapid Test Early Detection Enables Immediate Action Better Management for Acute Myocardial Infarction.

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Transcript OnSite Troponin I Rapid Test Early Detection Enables Immediate Action Better Management for Acute Myocardial Infarction.

Slide 1

OnSite Troponin I Rapid Test
Early Detection Enables Immediate Action
Better Management for Acute Myocardial Infarction


Slide 2

Acute Myocardial Infarction (AMI)
• A heart attack occurs when blood flow
to a part of heart is blocked for a long
enough time
• Irreversible necrosis of heart muscle
• One of the acute coronary syndromes
(ACS)


Slide 3

AMI Risk
• The leading cause of morbidity and
mortality worldwide
o

50% of all deaths in industrialized
countries

o

Main causes of death in developing
countries


Slide 4

Clinical Symptoms and Signs
• Typical chest pain
o Substernal pressure sensation, aching, burning, or sharp
o Intense and unremitting for 30-60 minutes
o Often radiates up to neck, shoulder, and ulnar aspect of left arm
o May have a feeling of indigestion or of fullness and gas
• Vital sign
o Increased heart rate
o Arrhythmia: ventricular tachycardia, atrial fibrillation/flutter
o Blood pressure: elevated; hypotension with right ventricular MI or
severe left ventricular dysfunction
o Increased respiratory rate
o Coughing, wheezing, and frothy sputum
o Fever, may exceed 102°F


Slide 5

Early Diagnosis Is Extremely Important


Critical for the immediate treatment due to a limited time window
Time

Histopathological Change of Myocardium

Outcome

0-0.5 hrs

Glycogen loss and mitochondrial swelling

Reversible

0.5-4 hrs

Glycogen depletion

Reversible

4-12 hrs





Initiation of coagulation necrosis
Edema
hemorrhage

Irreversible

Ongoing coagulation necrosis
Neutrophil infiltration

Irreversible

12-24 hrs •



Slide 6

The New Criteria for Diagnosis of AMI
Detection of rise and/or fall of cardiac biomarkers (preferably troponin) with at
least one value above the 99th percentile of the upper reference limit, together
with at least one of the following:
• Symptoms of ischaemia
o Typical chest pain lasting for more than 20 minutes
• ECG changes
o new ischaemia (new ST-T changes, or new left bundle branch block (LBBB))
o development of pathological Q-wave
• Coronary artery intervention (e.g., coronary angioplasty)


Slide 7

Elevation of Cardiac Biomarkers after AMI

Cardiac Troponin I and T

History
Sensitivity
& specificity
Raise time
Peak

GP BB

Troponin

Myoglobin

CK-MB

LDH

Latest

2nd Gen.

High

Highest

Low
specificity

Relatively
specific

Not as specific
as troponin

1-3 hrs

2-4 hrs

2-4 hrs

4-6 hrs

4-6 hrs

7 hrs

12 hrs

6-12 hrs

10-24 hrs

72 hrs

1st generation of cardiac biomarkers

Cardiac troponin is an early, accurate, and stable biomarker


Slide 8

Troponin Assay is Recommended
• Recommended by the American College of Cardiology (ACC) and the
European Society of Cardiology (ESC) as the key of definition of AMI
• 1 elevated level is sufficient to establish the diagnosis of AMI, by
using the 0.6 ng/mL cutoff for normal
o
No repeat testing is needed

• Increased cTnI/cTnT is used to establish NSTEMI on the patients with
o unstable angina or minor myocardial injury
o negative CK-MB values
o in the absence of diagnostic ECG changes


Slide 9

Indication of Troponin Assay
• Any patient presenting with a possible ACS

• Routinely following percutaneous coronary intervention
• Routinely following surgical revascularization, coronary artery bypass
graft

A positive Troponin is associated with increased
risk of an adverse outcome at 30 days.


Slide 10

Troponin Assay - cTnI or cTnT ?
• Both rise in 2-4 hours after AMI, and peak at 12-24 hours

• cTnI remains raised for 5-7 days, cTnT for more than 2 weeks
• Equivalent sensitivity & specificity; No scientific evidence that either of
these markers is superior to the other
• No POCT for cTnT is available
• POCT for cTnI is available on the market
• cTnI is cost effective

Troponin I assay is an ideal and realistic method


Slide 11

OnSite Troponin I Rapid Test is Ideal for AMI
• Easy of use in any setting
o Can use whole blood specimens
o No equipment requirement
o Product to be stored and shipped at room temperature
• Fast result
o Results available within 15 minutes
o Reduce stay in ED around 25 minutes
• Minimal training is needed
o Simple procedure
o Allows every health care professionals to perform the test

Aid in the diagnosis of AMI in emergency room, critical care, point of care
and hospital settings, or even remote area, patient home, and ambulance


Slide 12

OnSite Troponin I Rapid Test Kits in 2 Formats

Catalog

Product

Specimen

Time to Result

R3001C

OnSite Troponin I Rapid Test CE

Serum/Plasma

15 min

R3002C

OnSite Troponin I Combo Rapid Test CE

Serum/Plasma/
whole Blood

15 min


Slide 13

Simple Procedure with Minimal Training Required

OnSite Troponin I Rapid Test (R3001C)

OnSite Troponin I Combo Rapid Test (R3002C)

Whole blood can be tested with R3002C


Slide 14

Clear, Easy to Read Result

Negative

Positive

Only C line is developed

Both C and T line are developed
Positive results need to be confirmed with other methods before any further action should be taken
- ECG is a simple confirmatory test -


Slide 15

Clinical Performance
• Sufficient Sensitivity
o

Detect 0.5 ng/mL or greater total
cTnI in serum or plasma

o

Detect 1 ng/mL or greater total
cTnI in whole blood


Slide 16

Clinical Performance
• The following substances were added to troponin I negative and 1.0
ng/mL troponin I spiked serum samples. No interference was found
with any of the substances at the following concentrations:
o

Bilirubin 10 mg/dL

o

Cholesterol 800 mg/dL

o

Hemoglobin 250 mg/dL

o

Triglyceride 1250 mg/dL


Slide 17

OnSite Troponin I Rapid Test Competes Over Other’s
• USA brand

• Utilize polyclonal and monoclonal antibody pair to minimize false
positive results
• Proper detection limit enables high specificity
o Calibrated against NIST total cTnI standard
o No false positive complaint reported since it is released
• A true POCT, can be used with whole blood specimen
• Prompt technical support from our technical specialist with 15 yrs
work experience as cardiologist


Slide 18

Recommended Troponin I Detection Algorithm

OnSite Troponin I Rapid Test Kits
Typical chest pain

Positive

Confirm AMI with ECG

Negative

1. Symptom & ECG monitoring
2. re-test later


Slide 19

More Cardiac Markers Available in Future
• OnSite GP BB Rapid Test
o Latest recognized cardiac marker
o Rise earlier than cTnI
o High sensitivity and specificity


Slide 20

Technical Support
Contact Info.:
10110 Mesa Rim Rd. San Diego, CA 92121 USA
Email Address: [email protected]
Telephone: 1 (858) 457-8698
Fax: 1 (858) 535-1739


Slide 21

QUALITY . INNOVATION . SIMPLICITY


Slide 22

Troubleshooting
False positive result
• It is the nature of in vitro diagnosis
• Interference substance or condition
• Product is not stored properly
• Test procedure is altered:
• add too much specimen, or
• extend recommended reading time
Any positive result needs to be confirmed with other methods before
any further action taken
• ECG is a simple confirmatory test


Slide 23

Troubleshooting
False negative result
• The level of cardiac marker at the time that specimen is taken, is under
the detectable level
• Unknown interference substance or condition
• Product is not stored properly
• Test procedure is not followed:
o add less specimen, or
o too much sample diluent
If symptom is highly suspected
• Take sample few hours late, and re-test
• Test with alternative method, such as ECG