Understanding COVID-19 Complications: A Guide for Patients

While most people with COVID-19 experience mild symptoms that can be managed at home, some individuals, particularly those who are older or have underlying health conditions like diabetes or heart disease, are at a higher risk of developing serious complications. In this article, we'll discuss the various complications that can arise from COVID-19 and what you need to know to stay informed and safe.

Cytokine Release Syndrome (Cytokine Storm)

Many COVID-19 complications may be caused by a condition known as cytokine release syndrome or a cytokine storm. This occurs when an infection triggers your immune system to flood your bloodstream with inflammatory proteins called cytokines, which can damage your organs, including your lungs, heart, and kidneys.

Respiratory Complications

Acute Respiratory Failure

Acute respiratory failure occurs when your lungs fail to pump enough oxygen into your blood or remove enough carbon dioxide. This has been the leading cause of death for those who have died of COVID-19.

Pneumonia

Some individuals who contract the new coronavirus develop severe pneumonia in both lungs. COVID-19 pneumonia is a serious illness that can be deadly, causing inflammation in the air sacs of your lungs and making it harder to breathe.

Acute Respiratory Distress Syndrome (ARDS)

ARDS is a common complication of hospitalized patients with COVID-19, occurring when the lungs are so severely damaged that fluid begins to leak into them. This makes it difficult for the body to get oxygen into the bloodstream, and prolonged mechanical ventilation is usually necessary until the lungs recover.

Other Organ Damage

Acute Liver Injury

Seriously ill COVID-19 patients run the greatest risk of liver damage. Acute liver injury and liver failure are life-threatening complications that can occur suddenly.

Acute Cardiac Injury

Some hospitalized COVID-19 patients have developed heart problems, including arrhythmias and other cardiac ailments. It's unclear whether the virus itself affects the heart or if the damage occurs due to the overall stress on the body.

Acute Kidney Injury

Although not a common complication, acute kidney injury is serious. If your kidneys stop working properly, doctors will start treatment to stop the damage, which may include dialysis until your kidneys recover. In some cases, the damage may lead to chronic kidney disease.

Sepsis

Sepsis occurs when your body's reaction to an infection becomes overwhelming, causing widespread inflammation and damage to tissues and organs. If left untreated, sepsis can lead to septic shock, a potentially fatal condition characterized by a dangerous drop in blood pressure.

Blood Clots and Coagulopathy

COVID-19 patients may develop unusual blood clotting, leading to internal bleeding or organ failure. This condition, called COVID-19-associated coagulopathy (CAC), is life-threatening and caused by the virus itself.

Multisystem Inflammatory Syndrome in Children (MIS-C)

Some children and teens have been hospitalized with MIS-C, a condition linked to the new coronavirus. Symptoms include fever, abdominal pain, vomiting, diarrhea, rash, headache, and confusion, similar to those of toxic shock syndrome or Kawasaki disease.

Chronic Fatigue and Other Long-Term Effects

Some people who have had COVID-19 develop a condition called long covid, similar to chronic fatigue syndrome, with brain fog, severe fatigue, pain, trouble thinking, or dizziness. In extremely rare cases, COVID-19 may also lead to rhabdomyolysis, a condition in which muscles break down, potentially overwhelming the kidneys and causing death.

For more information on COVID-19 and its potential complications, visit:

• CDC - Symptoms of COVID-19
• WHO - Q&A on COVID-19
• Mayo Clinic - COVID-19

The Bottom Line

Early intervention within the first 5 days of symptoms is important for limiting severe complications and poor outcomes, especially in high-risk individuals over 65 or those with chronic medical conditions. Vaccination remains the most effective prevention strategy, reducing severe disease risk by over 90%. If you're experiencing worsening symptoms or have concerns about your COVID-19 risk factors, Doctronic can provide quick guidance on next steps.