Characteristics of Nephrotic Syndrome

Written by Zhang Hui

Nephrology

Updated on September 26, 2024

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The characteristics of nephrotic syndrome are defined by significant proteinuria, where significant proteinuria refers to urinary protein exceeding 3.5 grams in 24 hours; hypoproteinemia, which refers to blood albumin levels below 30 grams per liter; edema, which may present in facial and lower limbs, and even severe patients may exhibit generalized edema around both lower limbs; and hyperlipidemia, characterized by increased cholesterol and triglycerides in the blood. These patients may exhibit reduced urine output, edema, and noticeably increased foam in the urine.

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Written by Li Liu Sheng

Nephrology

1min 10sec

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Conditions for discontinuing medication for nephrotic syndrome

The main clinical manifestations of nephrotic syndrome are significant proteinuria and hypoproteinemia, along with varying degrees of hyperlipidemia and edema. Nephrotic syndrome often requires treatment with corticosteroids. The general principle for using steroids is to start with a sufficient dosage and administer it slowly, maintaining it for a long duration, approximately around one year. Therefore, the conditions for discontinuing medication in nephrotic syndrome include: if the patient has been treated with steroids for about a year, and the proteinuria has resolved, 24-hour urinary protein quantification is normal, there is no edema, blood albumin levels have returned to normal, and kidney function is also normal, then discontinuation of steroid treatment can be considered. Of course, after stopping the medication, it is essential to regularly visit the hospital for monitoring of routine urine tests, kidney function, and blood pressure to prevent the recurrence of nephrotic syndrome due to infections or fatigue.

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Written by Zhou Qi

Nephrology

1min 6sec

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Characteristics of Nephrotic Syndrome

The characteristic feature of nephrotic syndrome is that patients may experience edema, which is related to the nature of this disease. The essence of this disease is due to some reason that damages the glomerular capillary filtration barrier. As a result, when blood passes through the glomeruli, it leaks proteins from the blood. A 24-hour urinary protein quantification will exceed 3.5 grams, which constitutes a large amount of urinary protein. Consequently, a large amount of protein is leaked into the urine, causing the protein concentration in the plasma to decrease. This leads to a reduction in the colloidal osmotic pressure of the plasma, causing fluid to move from inside the blood vessels to outside, thus leading to edema. Therefore, the most significant clinical feature of nephrotic syndrome is the potential to cause edema, and severe cases of edema may elevate blood pressure, lead to pulmonary edema, manifesting as difficulty breathing, chest tightness, and shortness of breath.

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Written by Zhang Hui

Nephrology

1min 17sec

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How should you eat with nephrotic syndrome?

Nephrotic syndrome is characterized by urine protein greater than 3.5 grams, serum albumin less than 30, the presence of edema, and hyperlipidemia. Patients matching these criteria can be diagnosed with nephrotic syndrome. From its diagnosis, we can see that such patients have a high amount of urine protein and relatively low blood protein. For these patients, it is necessary to control their protein intake, generally suitable at 0.6-0.8 grams per kilogram of body weight per day. Due to hypoalbuminemia, as the liver synthesizes protein, it also leads to an increase in blood lipids. Therefore, patients with nephrotic syndrome need to follow a low-fat diet to avoid further elevation of blood lipids. Additionally, as patients with nephrotic syndrome generally have edema, it is necessary to restrict sodium intake to prevent sodium and water retention, further aggravating the edema.

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Written by Zhang Hui

Nephrology

30sec

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Kidney disease syndrome is classified as what disease?

Nephrotic syndrome is a clinical subtype of chronic kidney disease. It can be diagnosed when there is significant proteinuria, hypoalbuminemia, accompanied by edema and hyperlipidemia. This represents a severe stage in the progression of kidney diseases, generally requiring treatment with steroids and immunosuppressants. Nephrotic syndrome may have complications such as thrombosis, infections, hyperlipidemia, and acute renal failure.

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Written by Wu Ji

Nephrology

48sec

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Criteria for the diagnosis of nephrotic syndrome

The diagnostic criteria for nephrotic syndrome include massive proteinuria, with urinary protein greater than 3.5 grams/day, hypoalbuminemia, with plasma albumin less than 30 grams/liter, severe edema, and hyperlipidemia, which includes significant increases in plasma cholesterol and triglycerides. The first two criteria are essential for the diagnosis of nephrotic syndrome, while the latter two are secondary. Clinically, if the two necessary criteria are met, the diagnosis of nephrotic syndrome is established. Patients with nephrotic syndrome should undergo a renal biopsy to determine the pathological type and guide clinical treatment.