Abstract

COVID-19 is a highly infectious respiratory virus, which can proliferate by invading the ACE2 receptor of host cells. Clinical studies have found that the virus can cause dyspnea, pneumonia and other cardiopulmonary system damage. In severe cases, it can lead to respiratory failure and even death. Although there are currently no effective drugs or vaccines for the prevention and treatment of COVID-19, the patient’s prognosis recovery can be effectively improved by ameliorating the dysfunction of the respiratory system, cardiovascular systems, and immune function. Intermittent hypoxic preconditioning (IHP) as a new non-drug treatment has been applied in the clinical and rehabilitative practice for treating chronic obstructive pulmonary disease (COPD), diabetes, coronary heart disease, heart failure, hypertension, and other diseases. Many clinical studies have confirmed that IHP can improve the cardiopulmonary function of patients and increase the cardiorespiratory fitness and the tolerance of tissues and organs to ischemia. This article introduces the physiological and biochemical functions of IHP and proposes the potential application plan of IHP for the rehabilitation of patients with COVID-19, so as to provide a better prognosis for patients and speed up the recovery of the disease. The aim of this narrative review is to propose possible causes and pathophysiology of COVID-19 based on the mechanisms of the oxidative stress, inflammation, and immune response, and to provide a new, safe and efficacious strategy for the better rehabilitation from COVID-19.

Highlights

  • Since the outbreak and pandemic of the highly infectious and pathogenic COVID-19, most attention has been focused on containing transmission of the coronavirus and addressing the surge of critically ill patients in acute care settings

  • We mainly focused on the potential of intermittent hypoxic preconditioning (IHP) applied in rehabilitation of COVID-19 and the prognosis based on a variety of IHP related beneficial impacts on physiological functions, and plausible mechanisms to better help the patients to recover and return to society promptly and safely

  • Combined with the many beneficial functions of IHP, there is no exact method for the treatment or prevention of COVID-19, we propose that IHP can improve immunity, accelerate the recovery of patients, and reduce the occurrence of positive rejuvenation after discharge

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Summary

Frontiers in Pharmacology

This article introduces the physiological and biochemical functions of IHP and proposes the potential application plan of IHP for the rehabilitation of patients with COVID-19, so as to provide a better prognosis for patients and speed up the recovery of the disease. The aim of this narrative review is to propose possible causes and pathophysiology of COVID-19 based on the mechanisms of the oxidative stress, inflammation, and immune response, and to provide a new, safe and efficacious strategy for the better rehabilitation from COVID-19

INTRODUCTION
PATHOLOGICAL FEATURES AND HISTOPATHOLOGY
INFLAMMATORY CYTOKINE STORM AND RELATED DAMAGE
TREATMENT STRATEGIES
POSSIBLE REHABILITATION STRATEGYINTERMITTENT HYPOXIC PRECONDITIONING
Choose the Appropriate Timing to Apply IHP
Choose the Appropriate IHP Therapeutic Options
SUMMARY AND PERSPECTIVE
Findings
AUTHOR CONTRIBUTIONS
Full Text
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