Evidence for Use or Disuse of Renin-Angiotensin System Modulators in Patients Having COVID-19 With an Underlying Cardiorenal Disorder.

Coronavirus disease 19 (COVID-19) originated in Wuhan, China, in December 2019 has been declared pandemic by World Health Organization due to an exponential rise in the number of infected and deceased persons across the globe. Emerging reports suggest that susceptibility and mortality rates are higher in patients with certain comorbidities when compared to the average population. Cardiovascular diseases and diabetes are important risk factors for a lethal outcome of COVID-19. Extensive research ensuing the outbreak of coronavirus-related severe acute respiratory syndrome in the year 2003, and COVID-19 recently revealed a role of renin-angiotensin system (RAS) components in the entry of coronavirus wherein angiotensin-converting enzyme 2 (ACE2) had garnered the significant attention. This raises the question whether the use of RAS inhibitors, the backbone of treatment of cardiovascular, neurovascular, and kidney diseases could increase the susceptibility for coronavirus infection or unfortunate outcomes of COVID-19. Thus, currently, there is a lack of consensus regarding the effects of RAS inhibitors in such patients. Moreover, expert bodies like American Heart Association, American College of Cardiology, and so on have now released official statements that RAS inhibitors must be continued, unless suggested otherwise by a physician. In this brief review, we will elaborate on the role of RAS and ACE2 in pathogenesis of COVID-19. Moreover, we will discuss the potential effect of the use and disuse of RAS inhibitors in patients having COVID-19 with cardiometabolic comorbidities.