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 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 Zhou Qi

Nephrology

40sec

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Can nephrotic syndrome be clinically cured?

Nephrotic syndrome, a disease that clinically cannot be completely cured, is a chronic illness with no concept of cure. However, with appropriate treatment plans, many patients can achieve effective relief. There are two criteria for judging treatment effectiveness: first, the patient's 24-hour urinary protein quantification is controlled below 0.5 grams, and even can be controlled below 0.3 grams. Second, the patient's 24-hour urinary protein quantification is reduced by more than half compared to the baseline value. Both scenarios indicate effective treatment, but achieving a complete cure is difficult.

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Written by Zhou Qi

Nephrology

51sec

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How long will it take for nephrotic syndrome to get better?

Most cases of nephrotic syndrome are primary nephrotic syndrome, which refers to the absence of specific causes and may be related to immune dysfunction. The disordered immune system attacks the glomerular capillaries causing damage to the filtration barrier, resulting in the patient excreting large amounts of urinary protein. For primary nephrotic syndrome, treatment generally involves the use of corticosteroids or a combination of hormones and immunosuppressants. About 50-60% of patients respond effectively to the medication, which typically takes about two months to take effect. Patients who respond quickly might see effects within one to two weeks, while those with less sensitivity to the medication may need three to four months. The general course of medication is about one year.

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Written by Zhou Qi

Nephrology

53sec

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Causes of edema in nephrotic syndrome

Edema is a diagnostic criterion for nephrotic syndrome, as well as a major clinical symptom and characteristic of the syndrome. There are several reasons why patients develop edema. First, a large amount of protein leaks out from the kidneys, causing a decrease in the concentration of plasma albumin and a decrease in the colloid osmotic pressure in the plasma, which makes it easy for water to move from inside the blood vessels to outside, causing edema. Second, patients with nephrotic syndrome have increased vascular permeability, which also makes it easy for water to enter the interstitial tissues. Among patients with nephrotic syndrome, some are prone to acute renal failure, which further decreases the kidney's ability to excrete water, and these factors together lead to the common occurrence of edema in patients.

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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.