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6/20/2020
===Acute Coronary Syndromes===
====Pathophysiology====
The mechanism of COVID-19 cardiovascular injury has not been fully understood and is likely multifactorial.
*SARS-CoV-2 virus attaches to ACE 2 protein for ligand binding before entering the cell via receptor-mediated endocytosis.
**Based on single-cell RNA sequencing more than 7.5% of myocardial cells have positive ACE2 expression. This protein can mediate the entry of SARS-CoV-2 and result in direct cardiotoxicity.
*The cytokine release caused by the virus may lead to vascular inflammation, plaque instability, myocardial inflammation, a hypercoagulable state, or direct myocardial suppression.
Pathological changes:
*In the level of cardiac tissue: minimal change to interstitial inflammatory infiltration and myocyte necrosis
*In the level of vasculature: micro-thrombosis and vascular inflammation<ref name="pmid32354800">{{cite journal| author=Kang Y, Chen T, Mui D, Ferrari V, Jagasia D, Scherrer-Crosbie M | display-authors=etal| title=Cardiovascular manifestations and treatment considerations in covid-19. | journal=Heart | year= 2020 | volume=  | issue=  | pages=  | pmid=32354800 | doi=10.1136/heartjnl-2020-317056 | pmc=7211105 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=32354800  }} </ref>
==ST-Elevation MI (STEMI)==
A US model from 9 major centers showed a 38% drop in total STEMI activations during the COVID-19 pandemic. There is a 40% reduction noted in Spain as well. there was also a delay between the first presentation to a medical encounter up to 318 min. This is important since COVID-19 can potentially be a cause of STEMI through microthrombi, cytokine storm, coronary spasm, or direct endothelial injury.<ref name="pmid32550258">{{cite journal| author=Ullah W, Sattar Y, Saeed R, Ahmad A, Boigon MI, Haas DC | display-authors=etal| title=As the COVID-19 pandemic drags on, where have all the STEMIs gone? | journal=Int J Cardiol Heart Vasc | year= 2020 | volume= 29 | issue=  | pages= 100550 | pmid=32550258 | doi=10.1016/j.ijcha.2020.100550 | pmc=7261452 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=32550258  }} </ref>
*Potential etiologies for the reduction in STEMI PPCI activations:
**avoidance of medical care due to social distancing or concerns of contracting COVID-19 in the hospital
**STEMI misdiagnosis
**increased use of pharmacological reperfusion due to COVID-19
It is very important to realize if patients' anxiety is the reason behind decreasing the presentation of STEMI to U.S. hospitals.<ref name="pmid32283124">{{cite journal| author=Garcia S, Albaghdadi MS, Meraj PM, Schmidt C, Garberich R, Jaffer FA | display-authors=etal| title=Reduction in ST-Segment Elevation Cardiac Catheterization Laboratory Activations in the United States During COVID-19 Pandemic. | journal=J Am Coll Cardiol | year= 2020 | volume= 75 | issue= 22 | pages= 2871-2872 | pmid=32283124 | doi=10.1016/j.jacc.2020.04.011 | pmc=7151384 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=32283124  }} </ref>
*Treatment of STEMI & COVID-19: The specific protocols for the treatment have been evolving. Early recommendations showed intravenous thrombolysis as first-line therapy for STEMI patients with confirmed COVID-19 since most hospitals do not have protected cardiac catheterization labs.<ref name="pmid32550258">{{cite journal| author=Ullah W, Sattar Y, Saeed R, Ahmad A, Boigon MI, Haas DC | display-authors=etal| title=As the COVID-19 pandemic drags on, where have all the STEMIs gone? | journal=Int J Cardiol Heart Vasc | year= 2020 | volume= 29 | issue=  | pages= 100550 | pmid=32550258 | doi=10.1016/j.ijcha.2020.100550 | pmc=7261452 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=32550258  }} </ref>
====Signs and Symptoms====
The signs and symptoms of acute coronary syndrome include:<ref name="pmid16267320">{{cite journal| author=Abidov A, Rozanski A, Hachamovitch R, Hayes SW, Aboul-Enein F, Cohen I et al.| title=Prognostic significance of dyspnea in patients referred for cardiac stress testing. | journal=N Engl J Med | year= 2005 | volume= 353 | issue= 18 | pages= 1889-98 | pmid=16267320 | doi=10.1056/NEJMoa042741 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16267320  }}  [https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=17213112 Review in: Evid Based Med. 2006 Jun;11(3):91] </ref>
*[[Chest pain]]
:*[[Chest pain|Substernal chest pain]]
:*Occurs at rest or [[exertion]]
:*Radiation to neck, jaw, left shoulder and left arm
:*Aggravated by physical activity and emotional stress
:*Relieved by rest, [[nitroglycerin]] or both
*Chest discomfort described crushing, squeezing, burning, choking, tightness or aching
*[[Dyspnea]]
*[[Diaphoresis]]
*[[Nausea]] and [[vomiting]]
*[[Fatigue]]
*[[Syncope]]
====Treatment====
In patients with ACS, and COVID-19 treatment should follow the guideline of the updated Society for Cardiovascular Angiography and Interventions guidelines.<ref name="pmid32212409">{{cite journal| author=Szerlip M, Anwaruddin S, Aronow HD, Cohen MG, Daniels MJ, Dehghani P | display-authors=etal| title=Considerations for cardiac catheterization laboratory procedures during the COVID-19 pandemic perspectives from the Society for Cardiovascular Angiography and Interventions Emerging Leader Mentorship (SCAI ELM) Members and Graduates. | journal=Catheter Cardiovasc Interv | year= 2020 | volume=  | issue=  | pages=  | pmid=32212409 | doi=10.1002/ccd.28887 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=32212409  }} </ref>

Revision as of 05:27, 21 June 2020

  1. Sara Haddadi MD, Miami FL

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Classification of Infra-Hisian Block
Types of Infra-Hisian Block Sub-type
Type 2 second degree heart block (Mobitz II) _
Left bundle branch block Left anterior fascicular block
Right bundle branch block _


Covid19. [1]




References


6/20/2020

Acute Coronary Syndromes

Pathophysiology

The mechanism of COVID-19 cardiovascular injury has not been fully understood and is likely multifactorial.

  • SARS-CoV-2 virus attaches to ACE 2 protein for ligand binding before entering the cell via receptor-mediated endocytosis.
    • Based on single-cell RNA sequencing more than 7.5% of myocardial cells have positive ACE2 expression. This protein can mediate the entry of SARS-CoV-2 and result in direct cardiotoxicity.
  • The cytokine release caused by the virus may lead to vascular inflammation, plaque instability, myocardial inflammation, a hypercoagulable state, or direct myocardial suppression.

Pathological changes:

  • In the level of cardiac tissue: minimal change to interstitial inflammatory infiltration and myocyte necrosis
  • In the level of vasculature: micro-thrombosis and vascular inflammation[1]

ST-Elevation MI (STEMI)

A US model from 9 major centers showed a 38% drop in total STEMI activations during the COVID-19 pandemic. There is a 40% reduction noted in Spain as well. there was also a delay between the first presentation to a medical encounter up to 318 min. This is important since COVID-19 can potentially be a cause of STEMI through microthrombi, cytokine storm, coronary spasm, or direct endothelial injury.[2]

  • Potential etiologies for the reduction in STEMI PPCI activations:
    • avoidance of medical care due to social distancing or concerns of contracting COVID-19 in the hospital
    • STEMI misdiagnosis
    • increased use of pharmacological reperfusion due to COVID-19

It is very important to realize if patients' anxiety is the reason behind decreasing the presentation of STEMI to U.S. hospitals.[3]

  • Treatment of STEMI & COVID-19: The specific protocols for the treatment have been evolving. Early recommendations showed intravenous thrombolysis as first-line therapy for STEMI patients with confirmed COVID-19 since most hospitals do not have protected cardiac catheterization labs.[2]

Signs and Symptoms

The signs and symptoms of acute coronary syndrome include:[4]

Treatment

In patients with ACS, and COVID-19 treatment should follow the guideline of the updated Society for Cardiovascular Angiography and Interventions guidelines.[5]

  1. ↑ Kang Y, Chen T, Mui D, Ferrari V, Jagasia D, Scherrer-Crosbie M; et al. (2020). "Cardiovascular manifestations and treatment considerations in covid-19". Heart. doi:10.1136/heartjnl-2020-317056. PMC 7211105 Check |pmc= value (help). PMID 32354800 Check |pmid= value (help).
  2. ↑ 2.0 2.1 Ullah W, Sattar Y, Saeed R, Ahmad A, Boigon MI, Haas DC; et al. (2020). "As the COVID-19 pandemic drags on, where have all the STEMIs gone?". Int J Cardiol Heart Vasc. 29: 100550. doi:10.1016/j.ijcha.2020.100550. PMC 7261452 Check |pmc= value (help). PMID 32550258 Check |pmid= value (help).
  3. ↑ Garcia S, Albaghdadi MS, Meraj PM, Schmidt C, Garberich R, Jaffer FA; et al. (2020). "Reduction in ST-Segment Elevation Cardiac Catheterization Laboratory Activations in the United States During COVID-19 Pandemic". J Am Coll Cardiol. 75 (22): 2871–2872. doi:10.1016/j.jacc.2020.04.011. PMC 7151384 Check |pmc= value (help). PMID 32283124 Check |pmid= value (help).
  4. ↑ Abidov A, Rozanski A, Hachamovitch R, Hayes SW, Aboul-Enein F, Cohen I; et al. (2005). "Prognostic significance of dyspnea in patients referred for cardiac stress testing". N Engl J Med. 353 (18): 1889–98. doi:10.1056/NEJMoa042741. PMID 16267320. Review in: Evid Based Med. 2006 Jun;11(3):91
  5. ↑ Szerlip M, Anwaruddin S, Aronow HD, Cohen MG, Daniels MJ, Dehghani P; et al. (2020). "Considerations for cardiac catheterization laboratory procedures during the COVID-19 pandemic perspectives from the Society for Cardiovascular Angiography and Interventions Emerging Leader Mentorship (SCAI ELM) Members and Graduates". Catheter Cardiovasc Interv. doi:10.1002/ccd.28887. PMID 32212409 Check |pmid= value (help).
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