Global Statistics

All countries
Updated on August 9, 2022 11:50 pm
All countries
Updated on August 9, 2022 11:50 pm
All countries
Updated on August 9, 2022 11:50 pm

Global Statistics

All countries
Updated on August 9, 2022 11:50 pm
All countries
Updated on August 9, 2022 11:50 pm
All countries
Updated on August 9, 2022 11:50 pm
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How Does Covid Affect The Lungs

Three Factors In Coronavirus Lung Damage

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Galiatsatos notes three factors that affect the lung damage risk in COVID-19 infections and how likely the person is to recover and regain lung function:

Disease severity. The first is the severity of the coronavirus infection itself whether the person has a mild case, or a severe one, Galiatsatos says. Milder cases are less likely to cause lasting scars in the lung tissue.

Health conditions. Galiatsatos says, The second is whether there are existing health problems, such as chronic obstructive pulmonary disease or heart disease that can raise the risk for severe disease. Older people are also more vulnerable for a severe case of COVID-19. Their lung tissues may be less elastic, and they may have weakened immunity because of advanced age.

Treatment. Treatment is the third factor, he says. A patients recovery and long-term lung health is going to depend on what kind of care they get, and how quickly. Timely support in the hospital for severely ill patients can minimize lung damage.

Can Kidneys Recover After Covid

As of yet, Sperati says, its uncertain how many people with COVID-19-related kidney damage regain their kidney function.

He says, Patients with acute kidney injury due to COVID-19 who do not require dialysis will have better outcomes than those who need dialysis, and we have seen patients at Johns Hopkins who recover kidney function. We have even had patients in the ICU with acute kidney injury who have required dialysis, and subsequently regained their kidney function. How often that occurs is still not known, but without question, the need for dialysis is a worrisome development in patients with COVID-19.

What Does Covid Do To Lungs

COVID-19 can cause lung complications such as pneumonia and, in the most severe cases, acute respiratory distress syndrome, or ARDS. , another possible complication of COVID-19, can also cause lasting harm to the lungs and other organs.

As we have learned more about SARS-CoV-2 and resulting COVID-19, we have discovered that in severe COVID-19, a significant pro-inflammatory condition can result in several critical diseases, complications and syndromes, Galiatsatos says.

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Is There Anything You Can Do To Proactively Protect Your Lungs

Han: Absolutely, starting at an early age. The lungs continue to development until youre about age 25. What were finding is many chronic lung diseases may actually begin much earlier. Childhood exposures may lead to reduced peak lung function, making adults more susceptible to further injury.

For instance, nicotine exposure in the womb can alter airway development. Secondhand smoke exposure as a child can lead to impaired lung function. Pollution and climate change are constant threats to lung healthwildfires, dust due to drought, air pollution from industry and vehicles all drive particulate matter that ultimately can contribute to poor lung health.

One way we can protect our respiratory health is to reduce risk of respiratory infections through vaccination. Make sure your children receive age-appropriate vaccinations, including the flu and COVID shots.

There is some evidence that a Mediterranean diet high in fruits and vegetables and low in saturated fats can be protective for lung health. Also, studies suggest fitness levels in young adulthood are associated with preserved lung health into older age.

Q: Should A Person Avoid Heavy Exercise For A While After Recovering From Covid

Improve Your Lung Health to Fight COVID

Dr. Connolly: My recommendation about exercise will be markedly different for someone recovering from a rough 72-hour stretch at home versus someone recovering from three weeks of being on a ventilator in the ICU.

That said, most people who have recovered from a mild case over a 10 to 14 day period, and who didn’t require hospitalization, still need to assume that their lungs and airways are sprained.

I would avoid resuming heavy exercise until you are symptom-free for at least 7 days. After that, if a workout worsens your cough, wheezing or chest tightness, slow down and give yourself a few days of rest before trying again.

Remember, you can’t see the damage, but recovering from a sprained lung is like recovering from a sprained ankle. Go slow.

And one last piece of advice: Regardless of whether you’ve never had COVID-19, are recovering from COVID-19 or had COVID-19 weeks or months ago, wearing a mask while outside your home is an essential step in keeping yourself and our community safe from COVID-19. We are all in this together and have the power to help stop the pandemic and return life to normal.

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Should I Keep Taking My High Blood Pressure Medication

Hypertension is a common cause of kidney problems. Hypertension damages the blood vessels of the kidneys and affects their ability to filter the blood. Kidneys also help to regulate blood pressure, so kidney damage can make hypertension worse. Over time, hypertension can cause kidney failure.

If you are living with hypertension, you might take medication for the problem. You may be reading news reports questioning the safety of taking certain prescription medicines to manage their condition: ACE inhibitors and angiotensin receptor blockers .

Sperati says that patients should stay on their medications and discuss concerns with their doctors.

Right now there are two sides debating this issue. One side is saying, based on animal studies, that these medications might be harmful, increasing risk of infection. The other says these same drugs might protect against lung damage and other problems associated with COVID-19.

But all of the professional societies have published articles recommending that you not change your medications, he says. Staying the course with your prescriptions, he adds, can lower the risk of heart and kidney damage from unchecked high blood pressure.

Sperati does recommend that patients with kidney issues stay away from non-steroidal anti-inflammatory drugs , such as ibuprofen and naproxen. These can raise blood pressure and increase fluid volume in the body, which puts strain on the kidneys.

What Are The Physiological Changes In Lung Structure And Function That Causes Serious Complications What Causes These Changes Specifically

A major issue with COVID-19 is with gas exchange in the alveolus. Usually, there is a very tight connection between the alveolar epithelium and the capillary. COVID-19 infects AT2 cells, kills them and floods the alveolus. In addition, there is evidence for microthrombosis, which may block the vascular side.

Clinically, this may appear as several conditions: severe bronchopneumonia, acute respiratory distress syndrome or sepsis.

Pneumonia is inflammation and fluid in the lungs, making it difficult to breathe. Patients can experience shortness of breath, fevers and cough, which can be productive. More severe inflammation can lead to ARDS, which can require significant treatment including the use of oxygen therapies, including mechanical ventilation or even extracorporeal membrane oxygenation , which is a lung bypass machine that oxygenates the blood. If a patient develops this severe of a syndrome, this can lead to longer-lasting effects on the lungs, such as fibrosis .

Figure 3 CT chest showing multifocal ground glass opacities with intermixed consolidation from COVID-19 bronchopneumonia.

Figure 4 – CT chest showing multifocal ground glass opacities with intermixed consolidation from COVID-19 bronchopneumonia.

Figure 7 – CT chest showing multifocal ground glass opacities from COVID-19 bronchopneumonia.

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What Happens To The Lungs Once Infected With Covid

Once the virus infects the lungs, pneumonia occurs. The infection triggers excessive mucus secretion in the airways as a natural defensive response of the body against the virus.

As a result, tiny air pockets in the lungs can get filled with mucus, preventing normal exchange of oxygen and carbon dioxide between blood and air. In severe cases, the patient may experience extreme breathing difficulties that necessitate supplemental oxygen support and, at times, ventilator support.

Help If Youre Feeling Worried

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Its understandable to be feeling worried or anxious about coronavirus, especially if you live with a long-term lung condition. But if youre feeling like youre struggling to cope, you should speak to your GP or health care professional. They can offer you advice on things you can do to help you cope, and in some cases offer you treatment to help you feel better.

Here are some tips to help you look after your mental health:

  • Try to keep active. Look at our exercise videos or the NHS website. Getting outside for some fresh air can improve your mood too.
  • Keep in touch with your friends and family in stressful times we cope better with support from those close to us.
  • Ask for help if you need it. You can find help for your mental health on the NHS.

Our friendly helpline team is also there for you Monday to Friday, 9am 5pm. Call 0300 222 5800.

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What Precautionary Measures Should Be Taken Against Covid

Social distancing is the biggest enemy of COVID-19. Preventive measures, such as the use of face coverings when possible, frequent handwashing, and frequent cleaning of high-touch surfaces, are important to contain the spread of COVID-19.

Symptoms of COVID-19 range from no symptoms at all to mild and severe. Mild symptoms include dry cough and fever, and severe symptoms include pneumonia and breathing problems that require hospitalization and ICU.

People who are older and with an underlying medical condition are more prone to getting severe COVID-19.

Contact your local healthcare provider immediately if:

  • You develop any symptoms suggestive of COVID-19.
  • You have been exposed to someone with an infection.
  • You have any concerns or doubts regarding the infection.

Q: What Happens To The Lungs During A More Severe Case Of Covid

Dr. Connolly: For some people, the infection becomes more serious and the lung tissue itself becomes swollen and filled with fluid and debris from dead cells which is clinically referred to as pneumonia.

This fluid build-up can affect a person’s oxygen levels, and pneumonia can be mild, moderate, severe or even life-threatening, depending on how impaired gas transfer becomes and how difficult it is to breathe.

If the transfer of oxygen into the blood stream is reduced, a person will often need supplemental oxygen and very close monitoring in a hospital setting.

In very serious cases, a person may need to be placed on ventilator support in the ICU.

Early on during the pandemic, there were a lot of unknowns about how contagious the virus could become during various medical interventions. Time and experience has taught us a lot about this virus, and now we’re able to more safely use several noninvasive breathing and oxygen devices, as well as techniques such as prone positioning before we have to resort to full life support with a ventilator.

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For Those People Who Are Diagnosed With Covid

According to the World Health Organization, recovery time appears to be around two weeks for mild infection and three to six weeks for severe disease. However, this is variable and depends on a patients pre-existing comorbidities in addition to illness severity.

Several surveys conducted in the U.S. and Italy are showing that only 39% of those who had been hospitalized reported a return to baseline health by 14-21 days after diagnosis.

Similarly, in a study of 143 patients hospitalized for COVID-19, only 13% were symptom-free after a mean of 60 days following disease onset.

The most common symptoms were dyspnea , fatigue , joint pain and chest pain.

However, there have been reports of persistent severe illness with weeks of fevers and pneumonia persisting in immunosuppressed patients.

With milder infection, patients can still have prolonged symptoms. A recent survey showed that only 65% reported a return to baseline health by 14-21 days after diagnosis. Those who did return to baseline health did so a median of seven days after the diagnosis. Symptoms that can persist include cough , fatigue and rarely fevers and chills in those with prior mild infection.

Should I Wear A Face Mask

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COVID-19 spreads when an infected person coughs, sneezes, talks, or sings. Evidence suggests that wearing a face mask correctly reduces the spread of coronavirus.

Although face masks and coverings are not a legal requirement, there may be some settings where youre asked to wear one, such as hospitals or at your GP surgery. You may also feel more comfortable wearing a face mask in public settings.

The UK nations all have slightly different guidance for wearing face masks, so check the public health guidance in your area.

Most people with a lung condition, even if its severe, can manage to wear a face mask for a short period of time. Wearing a mask does not reduce a persons oxygen supply or cause a build-up of carbon dioxide.

If you find wearing a face mask makes you feel too breathless, the governments in all four nations say you dont have to wear one.

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How Does The Pneumonia Develop

When people with Covid-19 develop a cough and fever, Wilson says this is a result of the infection reaching the respiratory tree the air passages that conduct air between the lungs and the outside.

He says: The lining of the respiratory tree becomes injured, causing inflammation. This in turn irritates the nerves in the lining of the airway. Just a speck of dust can stimulate a cough.

But if this gets worse, it goes past just the lining of the airway and goes to the gas exchange units, which are at the end of the air passages.

If they become infected they respond by pouring out inflammatory material into the air sacs that are at the bottom of our lungs.

If the air sacs then become inflamed, Wilson says this causes an outpouring of inflammatory material into the lungs and we end up with pneumonia.

He says lungs that become filled with inflammatory material are unable to get enough oxygen to the bloodstream, reducing the bodys ability to take on oxygen and get rid of carbon dioxide.

Thats the usual cause of death with severe pneumonia, he says.

What Is The Difference Between The Symptoms Of Sars And Covid

Both SARS and COVID-19 are viral infections that can cause cough, fever, and lower respiratory symptoms. The major distinguishing feature between the two is that SARS is relatively more severe than COVID-19, whereas COVID-19 is more contagious or fast-spreading than SARS.

SARS caused more serious illness, with 20%â30% of those infected requiring a ventilator. Meanwhile, COVID-19 appears to spread more easily than SARS, likely due to a large number of mild to asymptomatic COVID-19 positive patients who remain undiagnosed.

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Socialising With Friends And Family

If youre worried about catching COVID-19, you may have some concerns about socialising in person.

Even though its no longer a legal requirement, you may want to socially distance from people. Or you may prefer to meet outside and to know a persons vaccination status ahead of meeting them.

Your family and friends may understand your situation, but it might be tricky to explain why you still want to take precautions. Weve put together some conversation starters to help you through these situations. You might want to say:

  • Just to let you know, I plan to wear a face covering when we meet, and Id be grateful if you would wear one as well.
  • I was wondering if youve had your coronavirus vaccines. You get the best protection when you have both doses and the booster, and recent studies have shown that they help prevent the spread of the virus.
  • When I come over to yours, is it OK if we keep the windows open as this will help prevent the spread of the virus?

The NHS has produced guidance on coping with anxiety about getting back to normal. It contains tips and advice on socialising, and sharing how you feel with others.

Can Smoking Increase The Chances Of Catching Covid

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Yes. Smoking increases the chances of developing the infection via two mechanisms. First, smoking increases the number of ACE-2 receptors in the lungs where the COVID-19 virus attaches.

Secondly, smoking can cause chronic lung disease, including COPD, and hence can increase the chance of having a severe infection.

In one study that examined about 2,000 patients, the researchers found that smokers were twice as likely and people with COPD were four times more likely to have severe infections compared with healthy non-smokers.

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You’re Finding It Hard To Breathe

Breathlessness was reported by 31% of patients from the initial experience in Wuhan. It is very frightening not being able to breathe. The degree of breathlessness is probably the most important clinical indicator of the severity of your condition.

  • Respiratory rate Normally adults breathe in and out 12 -18 times per minute.

More than 20 breaths per minute is faster breathingcalled tachypnoea.

  • Inability to breathe interferes with normal daily activities As the COVID-19 infection progresses, you may feel more breathless. If this is starting to interfere with daily activities, for example, you can’t finish a sentence without taking a breath, or it’s hard to eat or drink, this is a bad sign. In addition, you may also find it harder and harder to walk around, manage the stairs, or do your daily activities.

  • Strain from breathing If you watch someone with severe breathing difficulties, you will notice them using their neck muscles to draw up the chest and suck air into the lungs, and sometimes flaring of the nostrils. People with severe breathing difficulties often complain that their chest, tummy, or back hurts, due to the mechanical strain of breathing.

If you have these clinical signs, you need to be getting urgent medical help as these are signs COVID-19 has passed from a moderate to a severe infection.

Using The Latest Technology To Analyse Cells

Professor Jim Wild, at the University of Sheffield, who is leading the MRI part of the study, said:

With novel and very sensitive lung imaging using hyperpolarised xenon MRI, we can pick up early signs of gas exchange limitation in the lungs and map this on to structural changes in the CT images and monitor with time whether the patients go on to develop interstitial lung disease.

They will also obtain samples of cells from the lungs of 50 people to look at how the lung cells have changed in response to the injury. This will include single-cell sequencing genetic analyses of immune and lung cells, to detect changes in gene expression .

To understand why some patients get severe lung disease following COVID-19, and others dont, they will link together the clinical findings with the studies of the patients genes and markers in the blood.

Professor Ling-Pei Ho, from the MRC Human Immunology Unit, University of Oxford, one of the leads in the study, said:

Studying immune cells in the lungs of patients with post COVID lung abnormalities adds greatly to the understanding of why patients have these persistent inflammation and scarring. This study will be one of very few to do this and will use the latest technology to analyse these cells, giving us the information of the highest resolution and potential causes for these lung problems.

The study will initially follow-up patients over 12 months, then follow longer-term outcomes through patient records.

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