Cardiac enzymes: Difference between revisions

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==Markers==
==Types==
 
{{Cardiac enzyme timecourse chart}}
{| class="pbNotSortable" width="300" cellspacing="1" cellpadding="1"
| Name
| INTL
| ELV PEAK
| RETRN
|-
| myglbn
| 1-4h
| 6-7h
| 18-24h
|-
| trp I
| 3-12
| 10-24
| 3-10d
|-
| trp T
| 3-12
| 10-24
| 5-14d
|-
| ckmb
| 4-12
| 12-24
| 48-72
|-
| ldh
| 8-12
| 24-48
| 10-14d
|}
 
<span class="Apple-style-span" style="line-height: normal; border-collapse: collapse"><font face="arial"><font color="#000000">n I - �2-4 hrs 1st detect</font></font></span>
 
<span class="Apple-style-span" style="line-height: normal; border-collapse: collapse"><font face="arial"><font color="#000000">� � � � � �8-12 hrs w/100% sensitivity</font></font></span>
 
<span class="Apple-style-span" style="line-height: normal; border-collapse: collapse"><font face="arial"><font color="#000000">� � � � � �10-24 peak</font></font></span>
 
<span class="Apple-style-span" style="line-height: normal; border-collapse: collapse"><font face="arial"><font color="#000000">� � � � � �5-10 day duration</font></font></span>
 
<span class="Apple-style-span" style="line-height: normal; border-collapse: collapse"><font face="arial"><font color="#000000">Tn T - above plus 5-14 d duration</font></font></span>
 
<span class="Apple-style-span" style="line-height: normal; border-collapse: collapse"><font face="arial"><font color="#000000">CK-MB : �3-4</font></font></span>
 
<span class="Apple-style-span" style="line-height: normal; border-collapse: collapse"><font face="arial"><font color="#000000">� � � � � � � � � 8-12 (100% sensitive)</font></font></span>
 
<span class="Apple-style-span" style="line-height: normal; border-collapse: collapse"><font face="arial"><font color="#000000">� � � � � � � � �10-24 hr peak</font></font></span>
 
<span class="Apple-style-span" style="line-height: normal; border-collapse: collapse"><font face="arial"><font color="#000000">MYOGLOBIN : 1-2 hrs detect first</font></font></span>
 
<span class="Apple-style-span" style="line-height: normal; border-collapse: collapse"><font face="arial"><font color="#000000">� � � � � � � � � � � � � � �4-8 100% sens</font></font></span>
 
<span class="Apple-style-span" style="line-height: normal; border-collapse: collapse"><font face="arial"><font color="#000000">� � � � � � � � � � � � � � � 4-8 peak</font></font></span>
 
<span class="Apple-style-span" style="line-height: normal; border-collapse: collapse"><font face="arial"><font color="#000000">� � � � � � � � � � � � � � � 0.5-1.0 duration</font></font></span>
 
<span class="Apple-style-span" style="line-height: normal; border-collapse: collapse"><font face="arial"><font color="#000000">� � � � � � � � � 2-4 day duration</font></font></span>


==Creatine Phosphokinase==
==Creatine Phosphokinase==
 
*Can be elevated in trauma, [[rhabdomyolysis]], hyperthermia, physical activity, renal or endocrine disease, systemic infections
-can be elevated in trauma, rhabdo, hyperthermia, physical activity, renal or endocrine dz, systemic infections
*If patient small with small muscle mass to begin with, total ck may not be elevated- so better to use CK index- is ratio of CKMB/ total CK. Elevated if > 3- 5%.
 
*CK Mass: with monoclonal antibody techniques, can directly measure ck mb mass as mmcg/L. More sensitive for detection of AMI
-if pt small with small muscle mass to begin with, total ck may not be elevated- so better to use ck index- is ratio of ckmb/ total ck. Elevated if > 3- 5%.
*CK-MB can be removed from the routine ED cardiac panel without adversely affecting patient care<ref>Le RD, Kosowsky JM, Landman AB, et al. Clinical and financial impact of removing creatine kinase-MB from the routine testing menu in the emergency setting. Am J Emerg Med. 2015;33(1):72–5. </ref>
 
-CK Mass: with monoclonal antibody techniques, can directly measure ck mb mass as mmcg/L. More sensitive for detection of ami
 
==Troponins==
 
-during contraction of muscle- thick filaments of myosin slide past thin filaments of actin by calcium mediated atp dependent contraction. Released calcium binds to troponin C, T, and I, which regulate muscle contraction.
 
-troponins not change in trauma, skeletal muscle dz, exercise, renal failure like ck does.
 
-troponin C found in all tissue and is not cardiac marker
 
-troponin T is qualitative assay.
 
-troponin I is quantitative assay.


==See Also==
==See Also==
*[[Troponin]]
*[[Acute Coronary Syndrome (Main)]]


Cards: CK-MB
==References==
 
<references/>
Cards: Troponin
 
 
== Markers ==
 
Name INTL ELV PEAK RETRN myglbn 1-4h 6-7h 18-24h trp I 3-12 10-24 3-10d trp T 3-12 10-24 5-14d ckmb 4-12 12-24 48-72 ldh 8-12 24-48 10-14d
 
<br/>n I - 2-4 hrs 1st detect
 
          8-12 hrs w/100% sensitivity
 
          10-24 peak
 
          5-10 day duration
 
Tn T - above plus 5-14 d duration
 
CK-MB&nbsp;: 3-4
 
                  8-12 (100% sensitive)
 
                10-24 hr peak
 
MYOGLOBIN&nbsp;: 1-2 hrs detect first
 
                            4-8 100% sens
 
                              4-8 peak
 
                              0.5-1.0 duration
 
                  2-4 day duration
 
 
 
== Creatine Phosphokinase ==
 
-can be elevated in trauma, rhabdo, hyperthermia, physical activity, renal or endocrine dz, systemic infections
 
-if pt small with small muscle mass to begin with, total ck may not be elevated- so better to use ck index- is ratio of ckmb/ total ck. Elevated if > 3- 5%.
 
-CK Mass: with monoclonal antibody techniques, can directly measure ck mb mass as mmcg/L. More sensitive for detection of ami
 
 
 
== Troponins ==
 
-during contraction of muscle- thick filaments of myosin slide past thin filaments of actin by calcium mediated atp dependent contraction. Released calcium binds to troponin C, T, and I, which regulate muscle contraction.
 
-troponins not change in trauma, skeletal muscle dz, exercise, renal failure like ck does.
 
-troponin C found in all tissue and is not cardiac marker
 
-troponin T is qualitative assay.
 
-troponin I is quantitative assay.
 
 
 
== See Also ==
 
Cards: CK-MB
 
Cards: Troponin


<br/>[[Category:Cards]]
[[Category:Cardiology]]

Latest revision as of 18:06, 27 October 2016

Types

Cardiac Enzymes Over Time

Type Interval (hours) Peak Elevation (hours) Return to Normal
Myoglobin 1-4 6-7 18-24 hours
Troponin I 3-12 10-24 3-10 days
Troponin T 3-12 10-24 5-14 days
CK-MB 4-12 12-24 2-3 days
LDH 8-12 24-48 10-14 days

Creatine Phosphokinase

  • Can be elevated in trauma, rhabdomyolysis, hyperthermia, physical activity, renal or endocrine disease, systemic infections
  • If patient small with small muscle mass to begin with, total ck may not be elevated- so better to use CK index- is ratio of CKMB/ total CK. Elevated if > 3- 5%.
  • CK Mass: with monoclonal antibody techniques, can directly measure ck mb mass as mmcg/L. More sensitive for detection of AMI
  • CK-MB can be removed from the routine ED cardiac panel without adversely affecting patient care[1]

See Also

References

  1. Le RD, Kosowsky JM, Landman AB, et al. Clinical and financial impact of removing creatine kinase-MB from the routine testing menu in the emergency setting. Am J Emerg Med. 2015;33(1):72–5.