Coronavirus Historical Perspective, Disease Mechanisms, and Clinical Outcomes: JACC Focus Seminar

Area of Science:

• Medicine
• Infectious Diseases
• Cardiology

Background:

• The emergence of coronavirus disease 2019 (COVID-19) presents global health challenges, particularly for vulnerable populations.
• Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection triggers significant inflammation, potentially causing tissue injury and organ failure.
• COVID-19 exhibits a complex interplay between inflammatory processes and thrombotic events.

Purpose of the Study:

• To review the pathophysiology of COVID-19, focusing on the relationship between inflammation and thrombosis.
• To identify patient populations at highest risk for severe outcomes.
• To summarize current and emerging therapeutic strategies for COVID-19.

Main Methods:

• Literature review of studies on COVID-19 pathophysiology, clinical manifestations, and treatment.
• Analysis of the mechanisms linking inflammation, thrombosis, and organ damage in COVID-19.
• Evaluation of the efficacy and limitations of current therapeutic interventions.

Main Results:

• COVID-19 is characterized by a pro-inflammatory state that promotes thrombosis, leading to acute lung injury and microthrombi.
• Myocardial injury is frequently observed, though true myocarditis is uncommon.
• Elderly patients, those with cardiovascular disease, and mechanically ventilated individuals have the highest mortality risk.
• Emerging therapies like remdesivir, dexamethasone, convalescent plasma, and antithrombotics show promise but need further validation.

Conclusions:

• COVID-19 involves a critical link between inflammation and thrombosis, contributing to severe illness and organ failure.
• While several treatments are promising, additional prospective research is essential to confirm their efficacy and safety.
• Survivors of severe COVID-19 may face long-term physical and psychological sequelae.