What is the underlying pathophysiology of asthma?

What is the underlying pathophysiology of asthma?

The pathophysiology of asthma is complex and involves airway inflammation, intermittent airflow obstruction, and bronchial hyperresponsiveness.

Can renal artery stenosis cause shortness of breath?

Renal artery stenosis itself doesn’t cause symptoms. But if it gets worse, it may cause high blood pressure. Or it may affect how well your kidneys work. Then you may have symptoms of those problems, such as shortness of breath, or fluid buildup that causes swelling in your legs and feet.

What are the side effects of renal artery stenosis?

Possible complications of renal artery stenosis include:

  • High blood pressure.
  • Kidney failure, requiring treatment with dialysis or a kidney transplant.
  • Fluid retention in your legs, causing swollen ankles or feet.
  • Shortness of breath due to a sudden buildup of fluid in the lungs.

What is renovascular stenosis?

To use the sharing features on this page, please enable JavaScript. Renovascular hypertension is high blood pressure due to narrowing of the arteries that carry blood to the kidneys. This condition is also called renal artery stenosis.

What are the 3 types of asthma?

What are the three types of asthma?

  • Nocturnal asthma: This is the most common type of asthma.
  • Exercise-induced asthma or exercise-induced bronchoconstriction: Physical exertion of patients during an exercise can trigger asthma in some cases.

What is the main physiological cause of asthma?

Asthma triggers Airborne allergens, such as pollen, dust mites, mold spores, pet dander or particles of cockroach waste. Respiratory infections, such as the common cold. Physical activity. Cold air.

What is the most common symptom of renal artery stenosis?

Symptoms of renal artery stenosis

  • continued high blood pressure (hypertension) despite taking medications to help lower it.
  • decreased kidney function.
  • fluid retention.
  • edema (swelling), especially in your ankles and feet.
  • decreased or abnormal kidney function.
  • an increase of proteins in your urine.

Can you reverse renal artery stenosis?

Treatment for renal artery stenosis may involve lifestyle changes, medication and a procedure to restore blood flow to the kidneys. Sometimes a combination of treatments is the best approach. Depending on your overall health and symptoms, you may not need any specific treatment.

What are the symptoms of renal stenosis?

What is the root cause of asthma?

Exposure to various irritants and substances that trigger allergies (allergens) can trigger signs and symptoms of asthma. Asthma triggers are different from person to person and can include: Airborne allergens, such as pollen, dust mites, mold spores, pet dander or particles of cockroach waste.

Does asthma ever go away?

Asthma symptoms that start in childhood can disappear later in life. Sometimes, however, a child’s asthma goes away temporarily, only to return a few years later. But other children with asthma — particularly those with severe asthma — never outgrow it.

What are the physiological benefits of asthma?

People with asthma may also notice other specific health benefits, including: improved lung function, which builds overall stamina and reduces the time that it takes for a person to feel out of breath. weight loss, which can reduce the risk of asthma attacks.

What is the difference between renovascular and renal artery stenosis?

As reviewed in Part I, renal artery stenosis (RAS) refers only to the anatomic presence of an obstructive lesion within the renal artery. This may or may not have clinical or hemodynamic significance. Renovascular hypertension (RVH) refers to hypertension that occurs as the direct physiologic result of RAS.

Is there a cure for renal artery stenosis?

If renal artery stenosis can be reversed, the patient’s hypertension can theoretically improve. However, it is important to note that the presence of a detectable stenosis that can be treated with angioplasty or surgical intervention does not ensure a cure for all patients.

Can a catheter angiography diagnose renal artery stenosis?

Because the most common cause of renovascular hypertension is renal artery stenosis, renal arteriography is the gold standard diagnostic modality. However, catheter angiography is invasive, costly, and time-consuming, and it can lead to complications such as renal artery dissection or cholesterol embolization.

Can a digital subtraction flush show renal artery stenosis?

Renal artery stenosis/renovascular hypertension. Digital subtraction flush aortogram in an 83-year-old mildly hypertensive man shows complete occlusion of the left renal artery; only a stub of the artery is visualized. Note the diffuse aortic atheroma.

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