Medical Specialties Commons^™

A Review Of The Cardiac And Cardiovascular Effects Of Covid-19 In Adults And Children, Bibhuti B Das, S Kristen Sexon Tejtel, Shriprasad Deshpande, Lara S Shekerdemian

The Texas Heart Institute Journal

Symptomatic coronavirus disease 2019 (COVID-19) typically affects the respiratory system but can involve the cardiovascular system. Cardiac complications of COVID-19 can result directly from myocarditis or indirectly from numerous other mechanisms. Differentiating between primary and secondary cardiovascular involvement-our focus in this review-may help to identify the long-term effects of COVID-19 on the heart in adults and children.

Venovenous Extracorporeal Membrane Oxygenation To Facilitate Removal Of Endobronchial Tumors, Bryan Miles, Lucian A Durham, Jonathan Kurman, Lyle D Joyce, David W Johnstone, David Joyce, Paul J Pearson

The Texas Heart Institute Journal

Short-term extracorporeal membrane oxygenation is a useful adjunct to thoracic procedures. We report the cases of 2 middle-aged men who were supported with venovenous extracorporeal membrane oxygenation to facilitate tumor debulking and recanalization of the carina and mainstem bronchi. Neither patient had major complications or adverse events. These cases suggest that short-term extracorporeal membrane oxygenation is safe in patients undergoing complex resection or debulking of endobronchial lesions.

Cardiovascular Outcomes In Patients With Mitochondrial Disease In The United States: A Propensity Score Analysis, Tran Nguyen, Talal Alzahrani, Joseph Krepp, Gurusher Panjrath

The Texas Heart Institute Journal

Mitochondrial disease comprises a wide range of genetic disorders caused by mitochondrial dysfunction. Its rarity, however, has limited the ability to assess its effects on clinical outcomes. To evaluate this relationship, we collected data from the 2016 National Inpatient Sample, which includes data from >7 million hospital stays. We identified 705 patients (mean age, 22 ± 20.7 yr; 54.2% female; 67.4% white) whose records included the ICD-10-CM code E88.4. We also identified a propensity-matched cohort of 705 patients without mitochondrial disease to examine the effect of mitochondrial disease on major adverse cardiovascular events, including all-cause in-hospital death, cardiac arrest, and …

High Burden Of Subclinical And Cardiovascular Disease Risk In Adults With Metabolically Healthy Obesity: The Atherosclerosis Risk In Communities (Aric) Study, Yvonne Commodore-Mensah, Mariana Lazo, Olive Tang, Justin B Echouffo-Tcheugui, Chiadi E Ndumele, Vijay Nambi, Dan Wang, Christie Ballantyne, Elizabeth Selvin

Faculty, Staff and Students Publications

OBJECTIVE: It is controversial whether adults who are obese but "metabolically healthy" have cardiovascular disease (CVD) risk comparable with that of normal-weight adults. High-sensitivity cardiac troponin T (hs-cTnT), a biomarker of myocardial damage, is useful in characterizing subclinical CVD. We categorized obesity phenotypes and studied their associations with subclinical and clinical CVD and CVD subtypes, including heart failure (HF).

RESEARCH DESIGN AND METHODS: We conducted cross-sectional and prospective analyses of 9,477 adults in the Atherosclerosis Risk in Communities (ARIC) study. We used the Adult Treatment Panel III criteria and BMI to define obesity phenotypes as follows: metabolically healthy normal weight, …

Sex-Related Disparities In Cardiovascular Health Care Among Patients With Premature Atherosclerotic Cardiovascular Disease, Michelle T Lee, Dhruv Mahtta, David J Ramsey, Jing Liu, Arunima Misra, Khurram Nasir, Zainab Samad, Dipti Itchhaporia, Safi U Khan, Richard S Schofield, Christie M Ballantyne, Laura A Petersen, Salim S Virani

Faculty, Staff and Students Publications

IMPORTANCE: There is a paucity of data regarding secondary prevention care disparities in women with premature and extremely premature atherosclerotic cardiovascular disease (ASCVD), defined as an ASCVD event at 55 years or younger and 40 years or younger, respectively.

OBJECTIVE: To evaluate sex-based differences in antiplatelet agents, any statin, high-intensity statin (HIS) therapy, and statin adherence in patients with premature and extremely premature ASCVD.

DESIGN, SETTING, AND PARTICIPANTS: This was a cross-sectional, multicenter, nationwide VA health care system-based study with patients enrolled in the Veterans With Premature Atherosclerosis (VITAL) registry. The study assessed patients who had at least 1 primary …

Cd8+ T Cells Inhibit Metastasis And Cxcl4 Regulates Its Function, Robiya Joseph, Rama Soundararajan, Suhas Vasaikar, Fei Yang, Kendra L Allton, Lin Tian, Petra Den Hollander, Sevinj Isgandarova, Monika Haemmerle, Barbara Mino, Tieling Zhou, Crystal Shin, Melisa Martinez-Paniagua, Aysegul A Sahin, Jaime Rodriguez-Canales, Juri Gelovani, Jeffrey T Chang, Ghanashyam Acharya, Anil K Sood, Ignacio I Wistuba, Don L Gibbons, Luisa M Solis, Michelle C Barton, Navin Varadarajan, Jeffrey M Rosen, Xiang H Zhang, Sendurai A Mani

Faculty, Staff and Students Publications

Background

The mechanism by which immune cells regulate metastasis is unclear. Understanding the role of immune cells in metastasis will guide the development of treatments improving patient survival.

Methods

We used syngeneic orthotopic mouse tumour models (wild-type, NOD/scid and Nude), employed knockout (CD8 and CD4) models and administered CXCL4. Tumours and lungs were analysed for cancer cells by bioluminescence, and circulating tumour cells were isolated from blood. Immunohistochemistry on the mouse tumours was performed to confirm cell type, and on a tissue microarray with 180 TNBCs for human relevance. TCGA data from over 10,000 patients were analysed as …

Population Simulations Of Covid-19 Outbreaks Provide Tools For Risk Assessment And Continuity Planning, Bo Peng, Rowland W Pettit, Christopher I Amos

Faculty, Staff and Students Publications

OBJECTIVES: We developed COVID-19 Outbreak Simulator (https://ictr.github.io/covid19-outbreak-simulator/) to quantitatively estimate the effectiveness of preventative and interventive measures to prevent and battle COVID-19 outbreaks for specific populations.

MATERIALS AND METHODS: Our simulator simulates the entire course of infection and transmission of the virus among individuals in heterogeneous populations, subject to operations and influences, such as quarantine, testing, social distancing, and community infection. It provides command-line and Jupyter notebook interfaces and a plugin system for user-defined operations.

RESULTS: The simulator provides quantitative estimates for COVID-19 outbreaks in a variety of scenarios and assists the development of public health policies, risk-reduction operations, and …

Habitual Sleep Duration And The Colonic Mucosa-Associated Gut Microbiota In Humans-A Pilot Study, Ritwick Agrawal, Nadim J Ajami, Sonal Malhotra, Liang Chen, Donna L White, Amir Sharafkhaneh, Kristi L Hoffman, David Y Graham, Hashem B El-Serag, Joseph F Petrosino, Li Jiao

Faculty, Staff and Students Publications

We examined the association between the colonic adherent microbiota and nocturnal sleep duration in humans. In a cross-sectional study, 63 polyp-free adults underwent a colonoscopy and donated 206 mucosal biopsies. The gut microbiota was profiled using the 16S rRNA gene sequencing targeting the V4 region. The sequence reads were processed using UPARSE and DADA2, respectively. Lifestyle factors, including sleep habits, were obtained using an interviewer-administered questionnaire. We categorized the participants into short sleepers (<6 h per night; n = 16) and normal sleepers (6–8 h per night; n = 47) based on self-reported data. Differences in bacterial biodiversity and the taxonomic relative abundance …

The Detrimental Association Between Fear Of Falling And Motor Performance In Older Cancer Patients With Chemotherapy-Induced Peripheral Neuropathy, Gu Eon Kang, Tamiko K Murphy, Mark E Kunik, Hoda J Badr, Biruh T Workeneh, Sarvari V Yellapragada, Yvonne H Sada, Bijan Najafi

Faculty, Staff and Students Publications

BACKGROUND: Cancer patients with chemotherapy-induced peripheral neuropathy (CIPN) are at increased risk of falls and developing fear of falling (FoF). Although FoF may continue to impair motor performance and increase the risk of falling even further, this association remains unexplored in CIPN.

RESEARCH QUESTION: Does high FoF in patients with CIPN further deteriorate motor performance beyond the impairment from CIPN-related sensory deficits?

METHODS: In this secondary analysis of data collected from two clinical trials, gait parameters during habitual walking condition and postural sway parameters during 30-second quiet standing (eye-open and eyes-closed) were compared among older participants (≥ 65 years) with …

Acute Psychosis With Recurrent Neurocysticercosis: A Case Presentation, Nasir F. Siddique, Kristy A. Fisher, Joshua Chang, Clara L. Alvarez Villalba

HCA Healthcare Journal of Medicine

Neurocysticercosis, a parasitic infection of the central nervous system (CNS) caused by the Taenia solium cestode, presents clinically with a large and diverse spectrum of symptomatology, dependent upon lesion number, locale and ensuing inflammatory response. To this date, there are only two documented cases of psychosis presenting in patients with neurocysticercosis, both of which were published in India. This case presentation depicts the first documented case of Psychotic Disorder Due to Another Medical Condition: Neurocysticercosis in the United States. The authors postulate that the atypical presentation of the neuropsychiatric instability with the aberrant recurrence of neurocysticercosis is predominantly attributable to …

Microfracture For Cartilage Defects In Today’S Orthopaedics: Pearls And Pitfalls, Himanshu Yn, Sufyan Ibrahim

Manipal Journal of Medical Sciences

Microfracture technique has vacillating clinical outcomes, limited demographic applicability, high failure rate, and variable patient satisfaction. Although it does not deserve to be a gold standard technique, there has not been a technique that could overcome all possible disadvantages associated with the technique and at the same time give a favourable result/be suitable for widespread use/not have its own disadvantages. Microfracture, integrated with biomaterial/stem cell transfer has shown promise over the past decade but studies evaluating the long-term efficacy of the tests and standardization are lacking. Besides, cost and operative difficulties limit widespread use. Twenty-five years into the field, microfracture …

Impact Of Scabies On Indonesian Public Boarding School Students’ Quality Of Life: A Mixed-Method Analysis, Sri Linuwih Sw Menaldi, Danny Surya, Valensia Vivian The, Melani Marissa

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Scabies is a neglected tropical disease in which people affected primarily presents with intense pruritus. The disease is often recurrent, especially in people living in close contacts, such as in a community; thus, it negatively impacts their quality of life (QoL).This study analyzes the impact of pruritus in scabies on the QoL of patients living in a public boarding school (PBS) in West Java, Indonesia.

Methods: This study is a mixed-method study conducted on 39 subjects. TheQoL was examined using the Indonesian version of the dermatology life quality index (DLQI) questionnaire and in-depth interviews.

Results: Most …

Prevalence Of Cutibacterium Acnes And Staph Spp. In The Lesions Of Acne Vulgaris In Jakarta, Melyawati Hermawan, Enty Tjoa, Inneke J. Hidajat, Maria Teressa, Eka B. Layadi, Alegra Wolter

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Acne vulgaris (AV) is a chronic skin disorder that is commonly seen in young adults. Recent studies have shown that bacteria other than Cuticubacterium acnes found in the skin microbiota also play vital roles in the pathogenesis of AV. Understanding the skin microbiota and its disruption in patients with AV is paramount in treating patients with AV.

Methods: Samples were obtained from 36 subjects to evaluate the proportion of Cutibacterium acnes, Staphylococcus epidermidis, and Staphylococcus aureus in lesions of AV by means of bacterial culture.

Results: There were 69 specimens collected from the 36 subjects with …

A Comparison Of Single-Dose Versus Divided-Dose Of Metronidazole On Bacterial Vaginosis Among Female Sex Workers In Surakarta, Willa Damayanti, Rini Hastuti, Agung Triana, Danu Yuliarto, Ardelia Dyah Ayu, Endra Yustin Ellistasari

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Bacterial vaginosis (BV) is the most common vaginal infection in sexually active women. Metronidazole (MTZ) is still one of the recommended regimens for BV either as a single-dose or divided-dose. In addition to its affordability and availability, oral metronidazole also produces fewer adverse effects. This study aimedto determine the efficacy of single-dose versus divided-dose metronidazole for BV among female sex workers (FSWs) in Surakarta.

Methods: A single-blind randomized clinical trial was conducted in Surakarta. FSWswith BV (⩾3 Amsel criteria) were enrolled. The subjects were grouped into two, and treated with MTZ either as a single-dose of …

Multisystem Langerhans Cell Histiocytosis In High-Risk Group: A Case Series Of Two Infants, Anggun Putri Yuniaswan, Putri Rachma Safitri, Diah Prabawati Retnani

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Langerhans Cell Histiocytosis (LCH) has diverse manifestations, from asymptomatic to aggressive, which involves many organs. Histopathological examination playsa crucialrole as a basic diagnostic standard for LCH. Writing Group of the Histiocyte Society proposes a guideline for diagnosing LCH, divided into presumptive, designated, and definitive diagnosis.

Case Illustration: Two cases of a 14 month-old girl and an 18 month-old girl presented similar clinical manifestation and multi-organ involvement. Dermatological examination revealed red papules and plaques covered by brownish scales and crusts on the scalp and body, erosion in some folds of the body. Histopathological examination of the first case …

Basal Cell Carcinoma In A 14-Year-Old: A Rare Case Of A Common Skin Cancer, Danang Tri Wahyudi, Firman Parrol, Aida Sofiati Hoemardani, Agassi Suseno Sutarjo

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Basal cell carcinoma (BCC) is the most common cutaneous malignancy. It usually arises in sun-exposed areas of the body, with the face and neck being the most common sites for BCC. BCC is typically found in older individuals, but it is becoming more prevalent in people younger than 50. However, such cases in children under 15 are rarely encountered. Pigmented BCC is a common presentation in people of color, while such presentation is relatively unusual in Caucasians. Pediatric cases could be idiopathic, but it is more commonly associated with a genetic defect, such as basal cell nevus syndrome, …

Noninvasive Diagnostic Modality For Skin Cancer, Remenda Siregar, Raja Nurhayati, Widyaningsih Oentari, Ari Karmila Sari

Journal of General - Procedural Dermatology and Venereology Indonesia

Histopathological examination is the gold standard for the diagnosis of nonmelanoma and melanoma skin cancer, but it is an invasive procedure that consumes time and requires large costs. The average cure rate for skin cancer is high with early detection and appropriate treatment. This is an article review that was made through findings from several scientific articles. There are several noninvasive imaging modality choices that can be used for screening at low cost, high quality, and faster result, which includes dermoscopy, optical coherence tomography, reflectance confocal microscopy, electrical impedance spectroscopy, multispectral imaging, and SIAscopy®. These imaging modalities can assist in …

Clinical Characteristics And Treatment Regimen Of Pemphigus Patients: A Retrospective Study, Windy Keumala Budianti, Eyleny Meisyah Fitri, Puti Rineska Meilinda, Endi Novianto, Shafira Anindya, Arlha Aporia Debinta

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Pemphigus is a potentially life-threatening autoimmune bullous disease. In pemphigus, the therapeutic options are based on the clinical characteristics of each patient. However, other than corticosteroids, most therapeutic options for pemphigus are currently limited. Steroid-sparing agents might be considered since the initiation of therapy to prevent the side effects of corticosteroid. The objective of this study is to identify the clinical characteristics and therapy of choice in patients with pemphigus at Dr. Cipto Mangunkusumo General Hospital.

Method: All cases of pemphigus from 2016 to 2018 at Dermato-Allergo-Immunology Clinic, Department of Dermatology and Venerology Dr. Cipto Mangunkusumo General …

Alternative Modality In The Treatment Of Acne Vulgaris: Low Level Laser Therapy, Rudi Chandra, Nelva K. Jusuf

Journal of General - Procedural Dermatology and Venereology Indonesia

Acne vulgaris is a chronic inflammatory disease of the pilosebaceous unit with polymorphic manifestations. The four key elements leading to the formation of acne lesions are alteration of follicular keratinization that leads to comedones, increased and altered sebum production under androgen control, follicular colonization by Propionibacterium acnes, and complex inflammatory mechanisms that involve both innate and acquired immunity. Phototherapy (light, lasers, and photodynamic therapy) has been proposed as an alternative therapeutic modality to treat acne vulgaris and is proposed to have less side effects compared to other treatment options. Recently, low-level laser (light) therapy (LLLT) which refers to the use …

Dermoscopy-Guided Carbon Dioxide Laser Destruction For Nevus Sebaceous: Two Case Reports, Larisa Paramitha Wibawa, Kuniaki Ohara

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Nevus sebaceous (NS) is a common hamartoma of the cutaneous adnexal structure, clinically appear as a well demarcated yellow-orange plaque, sometimes with verrucous surface. Dermoscopy may aid the diagnosis of NS and also guide carbon dioxide (CO2) laser therapy.

Case Illustration: Two cases of brown and yellowish plaque on the face, with clinical appearance, dermoscopic, and histopathological findings consistent with NS. The patients consented to undergo serial CO­2laser destruction, aimed to reduce recurrences and shorten the duration of the downtime. Dermoscopy aided in locating the area and the depth of each treatment.

Discussion: The dermoscopy finding …

Childhood-Onset Borderline Tuberculoid Leprosy With Reversal Reaction, Ramona D. Lubis, Mila Darmi, Rudi Chandra

Journal of General - Procedural Dermatology and Venereology Indonesia

Background: Leprosy is a chronic granulomatous infection caused by Mycobacterium lepraethat predominantly affects the skin and peripheral nerves. Leprosy among children is still common in endemic countries.

Case Illustration: A 12-year-old girl complained about a hypopigmented anesthetic patch on her face for 11 years, which became larger and spread slowly to her arms and legs. She had a history of close contact with her aunt, who was diagnosed with multibacillary leprosy. On slit-skin-smear test, acid-fast-bacilli (bacteriologic index +1) were found. She was diagnosed with multibacillary leprosy and treated with children’s multidrug therapy-multibacillary (MDT-MB) regimen. After 2 months of …

Comparison Of Clinical Characteristics And Outcomes Between Covid-19 Pneumonia And H1n1 Influenza, Nosheen Nasir, Iffat Khanum, Kiren Habib, Rimsha Ahmed, Mujahid Hussain, Zahra Hasan, Muhammad Irfan

Department of Medicine

Introduction: The COVID-19 pandemic has been likened to the 2009 H1N1 influenza pandemic. We aim to study the similarities and differences between patients hospitalized with COVID-19 and H1N1 influenza in order to provide better care to patients, particularly during the co-circulation of Influenza A Subtype H1N1 and SARS-CoV-2.
Material and methods: A retrospective cohort study was conducted in order to compare clinical characteristics, complications, and outcomes of hospitalized patients with PCR-confirmed H1N1 influenza pneumonia and COVID-19 at a tertiary care center in Karachi, Pakistan.
Results: A total of 115 patients hospitalized with COVID-19 were compared with 55 patients with H1N1 …

Covid-19 Newsletter (Vol. 78), Center For Disaster Medicine, New York Medical College

COVID-19 Newsletter

No abstract provided.

Perception Of Non-Alcoholic Fatty Liver Disease: Real-Life Experience From Pakistan, Nazish Butt, Muhammad Ali Khan, Lajpat Rai, Riaz Hussain Channa, Hanisha Khemani, Amanullah Abbasi

Section of Gastroenterology

Introduction: Non-alcoholic fatty liver disease (NALFD) has become one of the most pervasive causes of hepatic pathology. Because of its marked association with metabolic syndrome, type II diabetes and cardiovascular disease, NAFLD has gained substantial focus recently. Its prevalence and incidence are on the rise in Pakistan. However, due to its indolent and mostly asymptomatic course, NAFLD is often overlooked. This reckless behavior towards a potentially deadly disease is influenced most notably by disinformation or flawed perception, although there are a number of other complex socioeconomic components to this as well. With respect to NAFLD, the gap between disease understanding …

Microbial Science Research In The Post-Covid Environment, Nguyen K Nguyen, Carey-Ann D Burnham, Arturo Casadevall, Mary K Estes, Rebecca V Ferrell, Suzanne M J Fleiszig, Speakers, Moderators, And Panelists Of The Asm Virtual Symposium: Microbial Science Research In The Post-Covid Environment

Faculty, Staff and Students Publications

Since early 2020, the world has witnessed the unprecedented accomplishments of the scientific community in the fight against the coronavirus disease 2019 (COVID-19) pandemic. In the meantime, we also learned valuable lessons and recognized the challenges that hindered our successes. In this article, we synthesize the ideas discussed at the ASM Virtual Symposium: Microbial Science Research in the Post-COVID Environment on 10 November 2020. We propose three new approaches that microbiology researchers can embrace to overcome these challenges. Moreover, we suggest broad systematic changes to focus on social impacts, teamwork, and diversity, equity, and inclusion. We believe these values are …

Benign Myoepithelioma Of The Soft Palate: An Unusual Clinical Entity, Marianna Guadalupe Mireles, Angelica Julián, Fabiola Salgado-Chavarría, Guillermo Manuel González

Faculty, Staff and Students Publications

Myoepitheliomas are rare benign tumours that affect the exocrine glands and are sporadically located in the salivary glands. The most common location of myoepithelioma in the oral cavity is the parotid gland and it is seldom encountered in the palate. The diagnosis of this entity is challenging since its clinical presentation may resemble those of more common neoplasms, rendering a complex histopathological diagnosis. The aim of the present case report is to describe an unusual case of myoepithelioma of the soft palate in a male patient, which developed as an asymptomatic, slowly growing mass. The tumour was assessed with histopathological …

Concurrent Covid-19 Infection In Children With Acute Appendicitis: A Report Of Three Cases, Maximo J. Acevedo, Dylan Steffey, Johanne E. Dillon, James T. Lee, David J. Worhunsky

Radiology Faculty Publications

Literature describing patients with concomitant COVID-19 infection with acute appendicitis in pediatric patients is growing, and understanding the clinical picture of such patients is relevant in their treatment. We report 3 male children who were surgically treated for acute appendicitis and had concomitant SARS-CoV-2 infection. Our first patient was a 12-year-old male who presented with symptoms indicative of appendicitis but no respiratory symptoms associated with COVID-19 (eg cough, shortness of breath). Laboratory evaluation revealed leukopenia and an elevated C-reactive protein; imaging was consistent with acute appendicitis and an acute pulmonary viral infection. Though he lacked diffuse peritonitis on physical examination …

Impact Of Covid-19 On Family Planning, Bakhtawar M H. Khowaja, Quratulain Shalwani

Department of Obstetrics & Gynaecology

No abstract provided.

Tocilizumab And Covid-19: A Meta-Analysis Of 2120 Patients With Severe Disease And Implications For Clinical Trial Methodologies, Azza Sarfraz, Zouina Sarfraz, Muzna Sarfraz, Hinna Aftab, Zainab Pervaiz

Department of Paediatrics and Child Health

Background/aim: Since the outbreak of the COVID-19, numerous therapies to counteract this severe disease have emerged. The benefits of Tocilizumab for severely infected COVID-19 patients and the methodologies of ongoing clinical trials are explored.
Materials and methods: A systematic search adhering to PRISMA guidelines was conducted in PubMed, Cochrane Central, medRxiv, and bioRxiv using the following keywords: “Tocilizumab,” “Actemra,” “COVID-19.” An additional subsearch was conducted on Clinicaltrials.gov to locate ongoing tocilizumab trials.
Results: A total of 13 studies were included in the meta-analysis comprising 2120 patients. The treatment group had lower mortality compared to the control group (OR = 0.42, …

Management Of Pararenal Aortic Aneurysms : A Literature Review, Hilman Ibrahim, Akhmadu Muradi, Ihza Fachriza

The New Ropanasuri Journal of Surgery

Abdominal aortic aneurysms (AAA) are the most common group of aortic aneurysms. Pararenal aortic aneurysm (PAA) is a classification of AAA where there is no normal aortic segment between the renal artery and the proximal border of the aneurysm. This group has a prevalence of around 20% of all AAA cases. In open repair (open surgery), PAA requires suprarenal clamps or even supraceliac which causes high morbidity. In endovascular procedures, PAA presents difficulties due to the absence of a landing zone to place the graft and the possibility of reintervention after action. A literature review is needed to discuss the …