Diabetic nephropathy


Is diabetic nephropathy with facial swelling serious?
Patients with diabetic nephropathy who experience facial swelling should not use this symptom as a basis for judging the severity of their condition. Diabetic nephropathy is divided into five stages. The condition is relatively mild during the first three stages. By the fourth stage, patients begin to exhibit significant proteinuria, and by the fifth stage, they experience severe renal failure. Conditions in these last two stages are quite severe. However, patients might also experience facial swelling during the first three stages, and while the likelihood of facial swelling increases during the fourth and fifth stages, some patients in these stages might not show obvious edema. Therefore, it is difficult to determine the severity of the condition based solely on swelling. Patients need to undergo 24-hour urinary protein quantification and blood tests to assess kidney function in order to judge the severity of their condition.


How to reduce proteinuria in diabetic nephropathy.
A major clinical feature of diabetic nephropathy is the occurrence of proteinuria, which, if the condition continues to progress, can lead to kidney failure. Controlling proteinuria in the early stages of the disease is indeed very important. In terms of treatment, it is primarily necessary to use medications or insulin to control the patient's blood sugar, as hyperglycemia is the fundamental cause of diabetic nephropathy. Additionally, these patients often also have hypertension, necessitating the use of antihypertensive drugs to control blood pressure. When the patient's kidney function is not severely impaired, ACE inhibitors or ARBs can be the preferred choice of antihypertensive drugs, as they not only control blood pressure but also reduce proteinuria. However, if the patient's serum creatinine is significantly elevated, such as over 264 µmol/L, these drugs should no longer be used. (Medications should be used under the guidance of a doctor.)


Is diabetic nephropathy stage 3 reversible?
Patients with diabetic nephropathy actually have an irreversible condition. If a patient has developed mild to moderate proteinuria and entered stage three, it's generally because of long-term high blood sugar, oxidative stress, and an excess of glycation end products damaging the capillaries of the glomerulus, resulting in increased permeability and the occurrence of proteinuria. The damage that has already occurred cannot be reversed; however, patients still need active treatment to control their blood sugar and blood pressure in order to slow down the progression of diabetic nephropathy as much as possible. Stage three diabetic nephropathy is incurable, but treatment can slow the progression of the kidney disease, preventing the development from microalbuminuria to macroalbuminuria. Stage three refers to the early period of diabetic nephropathy, typically seen in diabetic patients who have had the disease for more than five years. It can feature a continuous increase in urinary albumin excretion rates. High filtration rates and long-term poor metabolic control may be reasons for the persistent microalbuminuria. During this stage, patients may experience a mild increase in blood pressure, and reducing blood pressure can decrease the excretion of microalbumin. During this period, strict control of blood sugar is necessary. Oral hypoglycemic drugs can be used for treatment, and it's crucial to regularly monitor fasting blood glucose, postprandial blood glucose, and glycated hemoglobin. Blood pressure should also be actively controlled, generally targeting a value of 130/80mmHg. Angiotensin-converting enzyme inhibitors and angiotensin II receptor antagonists are preferred as they can lower blood pressure, reduce proteinuria, and have a protective effect on the kidneys, thus delaying the progression of kidney disease.


How to prevent and treat diabetic nephropathy
The prevention and treatment of diabetic nephropathy include the following 6 aspects: The first is changing lifestyle, including controlling weight, diabetic diet, quitting smoking, quitting alcohol, and appropriate exercise. Changing lifestyle is the foundation of blood sugar control and a key to improving various metabolic disorders. The second is blood sugar control. Strict blood sugar control is the most important means to prevent the occurrence and development of diabetes and diabetic nephropathy. Under normal kidney function, it is recommended to keep glycated hemoglobin below 6.2%. For patients with abnormal kidney function or elderly patients, it can be relaxed to 7%. The third is to reduce blood pressure and proteinuria. The most commonly used medications are ACE inhibitors and angiotensin receptor blockers. Once diabetic microalbuminuria appears, blood pressure should be controlled below 130/80 mmHg. The fourth is to restrict the intake of dietary protein, with a focus on animal protein, i.e., high-quality protein. Early stage protein intake should be controlled at 0.8-1g/kg; for patients who have developed renal failure, controlling protein intake at 0.6-0.8g/kg is more appropriate. The fifth involves controlling other factors, including a low-salt diet and treating hyperlipidemia. The sixth is the treatment of end-stage diabetic nephropathy. Since diabetic nephropathy patients frequently have cardiovascular complications and symptoms of uremia appear earlier, it is appropriate to start dialysis treatment early. (Please take medications under the guidance of a doctor.)


Can diabetic nephropathy with swollen feet be treated?
Diabetic nephropathy in the middle and later stages can cause edema, especially in patients with significant proteinuria or renal failure. Many patients can even experience generalized edema. For such patients, swollen feet and swelling in other parts of the body can be considered for appropriate use of diuretics to increase urine output and eliminate edema. However, generally, the extensive use of diuretics is not actively advocated because excessive diuresis can also lead to significant protein loss and even cause insufficient blood volume, affecting the blood supply to the kidneys. Nevertheless, some patients with severe conditions that cause pulmonary edema and heart failure may not respond well to diuretics. In such cases, dialysis ultrafiltration may be required to remove water, alleviate edema, and reduce cardiac stress.


Can diabetic nephropathy undergo kidney transplantation?
Diabetic nephropathy has now become the leading cause of uremia in China, accounting for the largest proportion. In the 1980s and 1990s, chronic nephritis was the most common cause of uremia in China. Over the past decade, diabetic nephropathy has gradually surpassed chronic nephritis and become the leading condition. This condition requires dialysis or a kidney transplant when it progresses to uremia. Patients with diabetic nephropathy in a uremic state can undergo a kidney transplant. After the transplant, these patients still need to use medications to control their blood sugar and blood pressure, to prevent high blood sugar and high blood pressure from further damaging the new kidney. Of course, if conditions allow, performing a combined kidney and pancreas transplant might yield better results.


What can diabetic nephropathy eat?
Diabetic nephropathy, as the name suggests, is a complication of the kidneys caused by long-term poor control of blood sugar in diabetes. Its most typical symptoms include significant proteinuria and potential body edema. Generally, there is no particularly good method to treat diabetic nephropathy; firstly, it is necessary to control blood sugar well, ensuring that fasting blood glucose does not exceed 7 mmol/L, and blood glucose two hours after a meal does not exceed 10 mmol/L. Additionally, some kidney-protective measures can be used to reduce urinary protein, etc. Furthermore, foods high in sugar, fried foods, and those high in starch should be avoided, such as potatoes, taro, sweet potatoes, and vermicelli, all of which should be consumed less.


Is stage three diabetic nephropathy severe?
Stage three of diabetic nephropathy refers to patients who have persistent microalbuminuria, indicating a relatively mild state of the disease at this time. In fact, diabetic nephropathy is divided into five stages. During the first and second stages, patients generally do not exhibit specific symptoms clinically and may even test negative for proteinuria; however, an increase in kidney size and glomerular filtration rate may occur. By the third stage, patients begin to exhibit small or micro amounts of urinary albumin. The pathological damage to the kidneys at this stage is not considered particularly severe. Patients may experience hyalinization of small arteries and nodular lesions in the glomeruli. Within the staging of diabetic nephropathy, this does not constitute a particularly severe phase; however, the condition of the patients may continue to progress, leading to significant proteinuria and even renal failure.


How to check for diabetic nephropathy?
For the examination of diabetic nephropathy, patients first need to undergo routine urinalysis and check for the urinary albumin excretion rate. Generally speaking, one characteristic of diabetic nephropathy is the presence of urinary protein. A urinary albumin excretion rate between 20 and 200 µg/min is an important basis for diagnosing early diabetic nephropathy. If a patient’s urinary albumin excretion rate consistently exceeds 200 µg/min, significant diabetic nephropathy is often considered. Of course, this is under the assumption that the patient has had diabetes for at least ten years and has diabetic retinopathy. A kidney biopsy is needed for confirmation. Of course, to assess the impact of diabetic nephropathy on kidney function, blood tests for serum creatinine and urea nitrogen are necessary.


How is diabetic nephropathy treated?
The treatment of diabetic nephropathy also depends on the specific stage the patient is in. During stages one to three, the main clinical treatments include controlling blood sugar, blood pressure, and lipids. Patients with diabetes often also have these metabolic disorders, including hypertension and hyperlipidemia, which can damage the kidneys. In addition, in the early stages, some medications are often chosen to reduce the pressure on the glomeruli. For example, using ACE inhibitors or angiotensin receptor blockers (ARBs) and inhibitors of the sodium-glucose cotransporter, these drugs can also slow the progression of kidney failure. However, if the patient's condition has progressed to stage five, which is essentially equivalent to the state of uremia, the patient will then need dialysis treatment.