Despite blood glucose control complications, dexamethasone remains a cheap, life-saving and effective treatment for COVID-19, provided patients are monitored for any related complications.
Though COVID-19 presented as a respiratory infection, patients that needed breathing support and intensive care treatment showed signs of an over active immune system. This sparked debate on whether the use of an immunosuppressing steroid would be a safe therapy.
Evidence was needed on effectiveness and safety, so the RECOVERY group quickly mobilised clinical trials that indicated it was beneficial in patients requiring oxygen support, and that it reduced the risk of death.
Dexamethasone is a potent steroid that can induce diabetes, and worsen existing diabetes. Patients with diabetes were already identified as having a greater risk of severe COVID-19 and it was unclear whether this treatment may be unsafe for this, and other, at risk patient groups.
Lead investigator, Dr Victoria Salem, comments, “We really didn’t know how to manage it, we were learning as we went along.
The RECOVERY trial showed that if you had COVID severe enough to need hospital treatment with a ventilator, then there was almost a third reduction in deaths for patients given dexamethasone.”
Dr Salem and colleagues from Imperial College Healthcare NHS Trust hospitals further assessed the benefits of dexamethasone with a focus on outcomes for patients with diabetes, as well as any other complications arising from raised blood sugar.
The team compared outcomes for over 800 patients in wave 1 (no dexamethasone) with over 1,300 patients in wave 2 (routine dexamethasone).
Dexamethasone significantly reduced the risk of ICU admission and death by 56%, although in patients with diabetes, it was associated with the need for extra medications to maintain blood sugar levels and, in a small minority, serious diabetic complications.
However, the independent benefit of dexamethasone at reducing death from COVID was not lessened in patients with diabetes.
The results of this study will be published soon and, with other studies, help to guide future treatment strategies.
More studies are needed to identify risk factors and how best to effectively and safely treat patients with different conditions. Patients can be given co-treatments and additional monitoring to avoid and manage steroid-related complications.
Dr Salem concludes, “We were concerned that dexamethasone was a double-edged sword for patients with diabetes, and while we did see an increase in steroid-induced diabetes and worsened diabetes, deaths were significantly reduced in wave two for all patients.
We now feel confident using dexamethasone for patients with diabetes in the future, just with the caveat that it may result in a short-term worsening of their condition.
We need to make sure that we’ve got the right resource available to educate them and monitor them through that period.”
Source: Medindia
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