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Welcome to the April, 2013 edition of SciEP newsletter, providing monthly summaries of articles on science & education related topics of interest to scientist and professionals. The mission of our journals is to provide an open access forum for publishing new findings on issues pertinent to scientific and academic field. We also invite you to submit original research papers, review articles, short reports, or case studies are considered for publication in our Multidisciplinary Journals.

American Journal of Public Health Research
DOI: 10.12691/ajphr-1-1-3

The Implementation of a Tele-Homecare System with Service Oriented Architecture and HL7 Message Transmission Standard
Ching-Sung Wang

American Journal of Medical and Biological Research
DOI: 10.12691/ajmbr-1-1-2

The Influence of Ethanol on Pyruvate Kinases Activity in Vivo, in Vitro, in Silico
Lelevich Sergey Vladimirovich, Khrustalev Vladislav Victorovich, Barkovsky Eugene Victorovich, Shedogubova Tatyana Aleksandrovna

American Journal of Medical Sciences and Medicine
DOI: 10.12691/ajmsm-1-1-1

Clinical and Histological Features in Wegener Granulomatosis
Li Cavoli Gioacchino, Passantino Rita, Bono Luisa, Tortorici Calogera, Ferrantelli Angelo, Giammarresi Carlo, Rotolo Ugo

American Journal of Infectious Diseases and Microbiology
DOI: 10.12691/ajidm-1-1-2

The Curse of Lymphatic Filariasis: Would the Continual Use of Diethylcarbamazine Eliminate this Scourge in Papua New Guinea?
Anne Lanham, Lillian Mwanri

We have released issues of some journals on February 2013.
American Journal of Public Health Research
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American Journal of Medical and Biological Research
American Journal of Pharmacological Sciences
American Journal of Clinical Medicine Research
American Journal of Nursing Research
American Journal of Cancer Prevention
American Journal of Medicine Studies
American Journal of Infectious Diseases and Microbiology
American Journal of Cardiovascular Disease Research
American Journal of Biomedical Research
American Journal of Mechanical Engineering
American Journal of Microbiological Research
Journal of Preventive Medicine
American Journal of Food and Nutrition
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Infective Endocarditis and COVID 19: A Systematic Review

Pramod Theetha Kariyanna, Amog Jayarangaiah, Jeewendra Dulal, Apoorva Jayarangaiah, Sushruth Das, George Jojo Punnakudiyil, Ashkan Tadayoni, Michael Freilich, Isabel M. McFarlane*

Department of Internal Medicine, State University of New York, Downstate Health Sciences University, Brooklyn, NY 11203, U.S.A.

Abstract: Coronavirus Disease-19 (COVID-19) is a pandemic caused by severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). COVID-19 is known to cause a wide variety of cardiovascular manifestations, including myocarditis, pericarditis, myocardial infarction, stroke, thrombus, pulmonary embolism and acute ventricular failure In this paper, we explore cases of infective endocarditis (IE) that occurred in patients who were concurrently (not sure if they were concurrently infected but if so, makes the sentence smoother and easier to understand) infected with COVID-19 and discuss its association in contributing to factors that can ultimately lead to the development of infective endocarditis. Some of these factors that contribute to IE in COVID-19 include severe inflammatory response, endothelial damage and dysfunction and immunosuppression caused by medications that are used to treat COVID-19. In this systematic review, 12 papers detailing 15 pertinent cases of IE following an infection with COVID-19 were identified. Data from these cases were tabulated and analyzed. The ages of the patients ranged from 20-70 years, with 73% of the patients developing IE of native heart valves and the remaining 27% developing IE of mechanical and bioprosthetic valves. The three most common organism implicated were Enterococcus faecalis (28.57%), Methicillin Resistant Staphylococcus aureus (MRSA) (14.28%), and Methicillin Sensitive Staphylococcus aureus (MSSA) (14.28%). Medical management of these cases involved antibiotic therapy and was reported in 80% of the cases, while only one patient (6.67%) underwent surgical valve replacement. The mortality rate of the patients in this review was quite high at 38%, and other major complications included cardioembolic stroke (20%) and septic embolization to the extremities (6.67%). COVID-19 infection results in a severe inflammatory response caused by a variety of mechanisms. This severe degree of widespread inflammation may result in damage to the endocardium, thus creating an environment to which microorganisms can adhere to and colonize. Additionally, the immunosuppressive medications used in a COVID-19 infection can result in an increased risk of developing infections that have the potential to spread to the endocardium via a hematogenous route. Physicians should be aware of occurrences of IE in COVID-19, as delay in diagnosis and management may cause significant morbidity and mortality.

Keywords: Coronavirus Disease-19 (COVID-19), severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), infective endocarditis

Received March 05, 2021; Revised April 09, 2021; Accepted April 20, 2021

Citation: Pramod Theetha Kariyanna, Amog Jayarangaiah, Jeewendra Dulal, Apoorva Jayarangaiah, Sushruth Das, George Jojo Punnakudiyil, Ashkan Tadayoni, Michael Freilich, Isabel M. McFarlane, Infective Endocarditis and COVID 19: A Systematic Review. American Journal of Medical Case Reports, 9 (7). 380-385. January 2021. doi:10.12691/ajmcr-9-7-11

1. Introduction

Coronavirus disease 2019 (COVID 19), due to severe Acute Respiratory Syndrome Coronavirus 2 (SARS-COV2), remains a pandemic. Though initially considered a disease primarily of the respiratory system, subsequent data and emerging experiences are highlighting the wide variety of manifestations this disease can have. The cardiovascular system, in particular, is of special interest because cardiovascular risk factors and preexisting chronic cardiovascular conditions are prevalent among COVID 19 patients and are known to be associated with adverse outcomes [1]. Some of the cardiovascular complications of COVID 19 include ST-elevation myocardial infarction [2], myocarditis [3], apical takotsubo cardiomyopathy [4], cardiogenic shock [5], arrhythmias [5], pericardial effusions [5], and cardiac tamponade [5]. Thromboembolic complications are seen as well, including stroke [5], deep vein thrombosis [5], and pulmonary embolism via a thrombus in transit [6]. Infective endocarditis (IE) is a life-threatening disease with serious sequelae even in those that have been treated [7]. While there have been advances in medical and surgical management, IE still has substantial mortality and morbidity [8]. In addition, many of the symptoms of IE such as fever, chills, dyspnea, fatigue, cough, and myalgia may overlap with those of COVID-19, making it difficult to suspect the presence of IE [9]. Studies have shown increased incidence of IE during the COVID pandemic [10]. Here we present a systematic review of the cases of IE in COVID- 19 patients in order to understand the clinical profile of these patients as well as the organisms implicated, the valves affected, management strategies employed and the outcomes.

2. Methods

A systematic search was conducted on January 15, 2021 using PubMed, Google Scholar, CINAHL, Cochrane CENTRAL and Web of Science databases (Figure 1). Studies listing the keywords “Coronavirus disease-19”, “COVID-19”, “SARS-COV2”, and “infective endocarditis” were used to identify cases of IE in patients with COVID-19. The reference list of each report was also checked for additional cases. All cases were reviewed in detail. Data reviewed included demographic details, symptoms, cardiovascular risk factors, echocardiographic findings, valves affected, blood cultures and organisms, treatment and outcomes. A total of 12 papers were included, from which 15 pertinent cases were identified.

Figure 1. Flow chart summarizing the method of selection of cases for the study

3. Results

A total of 15 cases were identified from the systematic review (Table 1). The mean age was 54.13 ± 16.7 years and the median age of 60± 16.7 years. 85% of the cases affected males. All of the patients in the study (93%) had active COVID-19 infections on admission and 73% reported confirmed serologic testing with RT-PCR. Only 6% of the patients were reported to have had a previous COVID-19 infection. Of the patients admitted, 20% had presented initially with an additional infection source (detailed in Table 1). The presenting complaints have been tabulated (Table 2), with the majority presenting with fever (80%), dyspnea (66.66%) and cough (60%). The associated cardiovascular risk factors and co-morbidities in the population were as follows: Hypertension (20%), diabetes mellitus type II (13.33%), hyperlipidemia (13.33%), history of rheumatic heart disease (13.33%), obesity (6.67%), mitral valve replacement (6.67%), Mitral and Aortic prosthetic valve (6.67%), history of closure of Patent Foramen Ovale (6.67%), Bicuspid Aortic valve and Aortic Coarctation repair in childhood (6.67%).

Table 1. Cases included in the systematic review detailing COVID-19 status on admission and disease manifestations

Table 2. Chief complaint at COVID-19 presentation

A majority of the patients developed IE of a native valve (73%) and the remaining patients developed it in artificial valves (27%). The most common valves affected were the native mitral (33.33%) and aortic valve (33.33%), followed by prosthetic aortic valve (20%), prosthetic mitral valve (6.67%) and native tricuspid valve (6.67%) (Table 3). The four most common organism implicated were Enterococcus faecalis (28.57%), followed by Methicillin Resistant Staphylococcus aureus (MRSA) (14.28%), Methicillin Sensitive Staphylococcus aureus (MSSA) (14.28%), and Staphylococcus aureus (14.28%). Additional organisms that were identified also included Methicillin-Resistant Staphylococcus hominis (7.14%), Pseudomonas aeruginosa (7.14%) and Candida albicans (7.14%). Only one case (7.14%) reported culture negative findings (Table 4). Medical management of the cases consisted mainly of antibiotic therapy and was reported in 80% of the cases, with only 1 patient (6.67%) undergoing surgical valve replacement. Major complications included cardioembolic stroke (20 %) and septic embolization of extremities (6.67%). Fatality occurred in 38% of the cases (Table 5). The Echocardiographic findings for each case have been tabulated and displayed (Table 6).

Table 3. Affected heart valves in COVID-19 associated endocarditis

Table 4. Organisms implicated in COVID-19 Infective endocarditis

Table 5. Table showing the implicated organisms and affected valves for the listed cases, as well as the therapeutic management and outcomes

Table 6. Cases included in the systematic review and corresponding echocardiography findings

Figure 2. Flow chart summarizing the potential factors that lead to the development of endocarditis from a COVID-19 infection

4. Discussion

Despite many advancements in care, IE is a disease that still carries a high rate of morbidity and mortality. Mortality rates can be approximately 25% even with appropriate management [7], and it carries a 1-year mortality of about 40% [9]. The occurrence of IE in the setting of COVID-19 infection could possibly be explained by the degree of inflammation caused by the COVID-19 infection. Damaged endocardial surfaces are a prime location for pathogenic organisms to adhere to and subsequently proliferate. Inflammation induced endocardial damage can be an appropriate site that a pathogen can adhere to and colonize [7]. The excessive inflammatory response of COVID-19 is already well defined through numerous mechanisms including a cytokine storm [21], so we can therefore hypothesize that the excessive inflammatory response may lead to damage of the endocardium of native heart valves. This can create a suitable surface to which pathogens can adhere to and precipitate the development of IE. (Figure 2) illustrates a summary of the events that a COVID-19 infection may lead to IE.

Additional factors that can increase the risk of developing IE include sepsis, immunosuppression and possessing prosthetic heart valves. Sepsis creates one of the core requirements for IE to take place, that is, the presence of an organism that is able to adhere to and colonize the endocardial surface [7]. COVID-19 patients that develop critical illness are at a higher risk of developing bacteremia or even fungemia [23]. This risk of sepsis is also increased due to widespread use of immunosuppressive agents involved in the treatment of COVID-19 patients. Lastly, prosthetic heart valves are a commonly known risk factor for IE [7] and it was seen in 27% of the patients in this study. All of these risk factors can compound with one another and increase the risk of IE. Unfortunately, many of the symptoms can overlap with other conditions and make diagnosis of IE difficult. Due to the high rate of mortality, knowledge of this potential complication is important so that timely treatment can be given and improve survival chances.

Since this systematic review focused on the published literature that reported an instance of stent thrombosis occurring in the setting of COVID-19 infection, it might be subject to selection bias. In addition, due to the limited number of published literature regarding this incidence, the low sample size is a limiting factor of this study. Lastly, all of the referenced studies were either case reports or case series without any control group to enhance the accuracy of the comparison.

5. Conclusions

The majority of patients with IE and COVID 19 were elderly males who presented with chief complaints of fever, dyspnea and cough. The most common valves that were affected, were the native mitral and aortic valves, followed by prosthetic aortic valves. The most common organism implicated was Enterococcus faecalis. One patient needed valvular replacement and a high mortality of 38% was noted. One of the main goals of this study is to alert physicians of coexisting IE in COVID-19 patients.

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