Clinical characterization of patients with COVID-19 and their predominant respiratory manifestations
Keywords:
COVID-19, symptomatology, respiratory manifestationsAbstract
Respiratory infections associated with SARS-CoV-2 have demonstrated notable clinical variability influenced by immune responses, pre-existing comorbidities, and the evolving behavior of the virus. Predominant manifestations include alterations in pulmonary function that range from mild symptoms, such as dry cough and occasional dyspnea, to more complex presentations characterized by acute respiratory insufficiency. This symptomatic heterogeneity underscores the importance of identifying clinical patterns that enable early recognition of progression toward more severe stages. Inflammatory changes within the pulmonary parenchyma promote hypoxemia, diffuse alveolar involvement, and a decline in ventilatory capacity. Persistent fever, marked fatigue, and chest tightness frequently accompany these respiratory alterations, forming a characteristic profile in moderate and severe phases. Additionally, the emergence of viral variants has shifted the intensity and prevalence of respiratory symptoms, emphasizing the need for continuous updating of clinical assessment criteria. Systematic characterization of these manifestations enhances diagnostic accuracy, supports timely therapeutic decision-making, and optimizes monitoring in patients at greater risk of complications. It also strengthens epidemiological surveillance strategies and contributes to the adaptation of care protocols in response to observed clinical variability. Altogether, examining respiratory symptoms in COVID-19 is essential to understanding the complex clinical behavior of the virus and promoting more effective interventions across healthcare settings.
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