ABSTRACT
The aim is to study the dynamics of Coronavirus model using stochastic methods. Threshold parameter R0 is obtained for the model. Afterwards, both the disease-free equilibrium (DFE) and endemic equilibrium (EE) points are acquired and the stability of the model is discussed. Both the equilibrium points are locally asymptotically stable. Euler-Maruyama, stochastic Euler scheme (SES), stochastic fourth-order Runge-Kutta scheme (SRKS) and stochastic non-standard finite difference technique (SNFDT) are applied to solve the model equations. Euler-Maruyama, SES, SRKS fail for large time step size, while, SNFDT preserves the dynamics of the proposed model for any step size. Numerical comparison of applied methods is provided using different step sizes. © 2022 The Author(s).
ABSTRACT
Aim: To evaluate the safety and success of facial artery ligation alone in arteriovenous malformation of upper lip in non-affording patients. Methodology: This prospective study was conducted at Department of Plastic surgery, on 11 consecutive patients with recurrent upper lip arteriovenous malformation who couldn’t afford angioembolization and frequent hospital visits for staged procedures. We did debulking of lesion after facial artery ligation and cosmetic lip correction. Results: Total 11 patients (9 males and 2 females) were included in this study. Majority of patients showed satisfactory results with facial artery ligation alone. One patient lost the follow up. No significant complication was noted in any patient. No recurrence was noted at 6 months and 1 year follow-up. Patient satisfaction rate remained 8.6±0.96 as per VAC. Conclusion: facial artery ligation alone provides an easy and approachable option for arteriovenous malformation where cost affordability for angioemboization and repeated hospital visits are main limitations.
ABSTRACT
Aim: To evaluate existing practice recommendations in the event of a COVID-19 pandemic and to develop future pandemic strategies. Methods: In the context of COVID-19, a review of surgical societies' and government agencies' websites, as well as current literature, was done to discover recommendations for plastic surgery operations. Our plastic surgery problems have been divided into four areas, with guidelines developed for each. Results: This pandemic demands modification in clinical practice and transformations are recommended in outpatients and perioperative settings to minimize the potential risk of disease transmission. Prioritization methods, operating room atmosphere, health care personnel safety, and preoperative patient evaluation are all covered by consensus standards for Plastic and Reconstructive Surgery. Operation theatre should be modified to minimize the disease transmission. PPE use is marked critical for all health care personals working in emergency settings. Preoperative assessment should be a critical component of management strategy. Conclusion: Since COVID-19 is predicted to resurface, doctors must weigh the risks and benefits of each operation in relation to essential patient care, COVID-19 spread reduction, and health-care worker safety. The plastic surgeon will be guided by scientific evidence-based standards that include conscious decision-making in emergency and non-urgent patients, OR changes, PPE usage, and preoperative screening tools.
ABSTRACT
As a novel coronavirus now known as SARS-COV-2 first reported in Wuhan china in late December 2019, the severe corona respiratory syndrome (SARS-CoV) is responsible for an acute human respiratory syndrome and is linked to Wuhan wholesale sea food market. The virus spread rapidly involving whole country and with span of three months WHO had to declare it as pandemic. Although its origins are not entirely understood, these genomic analyses suggest that SARS-CoV-2 probably evolved from a strain found in bats. SARS-COV-2 is zoonotic but human-to-human transmission is also possible. Surveillance and phylogenetic researches indicate SARS-CoV-2 to be closely associated with bats' corona viruses, suggesting bats as reservoirs, although unconfirmed. With no vaccine currently available for SARS-COV-2 nor approved prophylactics, its global spread to over 150 countries with high virulence highlights its role as ongoing public health threat. An articulated action plan ought to be taken, preferably from a One Health perspective, for appropriately advanced counter measures against COVID 19.