Objectives The global pandemic COVID‐19 has resulted in significant global morbidity, mortality and increased healthcare demands. There is now emerging evidence in of patients experiencing urticaria. We sought to systematically review current evidence, critique the literature and present out findings. Methods Allowing PRISMA guidelines, a comprehensive literature search was carried out with Medline, EMBASE, Scopus, Cochrane, and Google Scholar, using key MeSH words, which include “COVID‐19,” “Coronavirus”, “SARS‐Cov‐2”, “Urticaria,” “Angioedema,” “Skin rash” up to August, 01 2020. The key inclusion criteria were articles that reported on urticaria and/or angioedema due to COVID‐19 infection and reported management and outcome. Studies were excluded if no case or cohort outcomes were observed. Results Our search returned 169 articles, 25 of which met inclusion criteria. All studies were case reports, reporting 26 patients with urticaria and/or angioedema and COVID‐19 infection and their management and/or response. Majority of patients (n=16, 69%) were over 50 years old. However, urticaria in the younger ages was not uncommon, with reported case of 2 months old infant. Skin lesions resolved from less than 24 hours to up to 2 weeks following treatment with antihistamines and/or steroids. There have been no cases of recurrent urticaria or cases non‐responsive to steroids. Conclusions Management of urticarial in COVID‐19 patients should involve antihistamines. Low dose prednisolone should be considered on an individualised basis. Further research is required in understanding urticarial pathogenesis in COVID‐19. This will aid early diagnostic assessment in patients with high index of suspicion and subsequent management in the acute phase. This article is protected by copyright. All rights reserved.

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Background: Primary mitral regurgitation (PMR) results in adverse remodeling changes and left ventricular (LV) dysfunction. Assessing LV function has prognostic value in predicting morbidity and mortality. Indications for surgery include parameters such as LV ejection fraction (LVEF) and systolic dimensions. Current guidelines are limited in identifying patients at optimal time for surgery. Impaired postoperative LVEF indicates poor prognostic outcomes and subsequent heart failure. Global longitudinal strain (GLS) via speckle tracking echocardiography (STE) presents as a promising parameter to detect subclinical dysfunction in asymptomatic patients.Methods: Following PRISMA guidelines, a literature search was conducted with Cochrane Library, PudMed, SCOPUS, and Web of Science. Key MeSH terms included "mitral regurgitation," "mitral valve insufficiency," "global longitudinal strain," "deformation," "LV-GLS," and "GLS." Inclusion criteria included (1) patients with severe PMR, (2) mixed population of symptomatic and asymptomatic patients, (3) standardized methods in assessing LV systolic function using 2D-STE, (4) valve repair or replacement surgery, and (5) patient outcomes measured after surgery.Search returned 234 papers, 12 of which met the inclusion criteria and were subsequently reviewed.Results: Baseline GLS is an independent predictor of postoperative outcomes, ranging from −17.9 to −21.7% GLS. A significant negative correlation was observed between preoperative GLS and postoperative LVEF. Impaired baseline GLS was associated with higher mortality rates. Better long-term survival rates were seen in patients who underwent early surgery. Conclusion: GLS shows sensitivity in predicting long-term postoperative outcomes.Further analysis is required to determine preoperative GLS threshold to identify asymptomatic patients at the optimal time for mitral valve surgery.