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Yan Xin Liang
Pediatrics
About me
Graduated from Nanhua University, engaged in pediatric work for over 10 years, and have further studied at Hunan Children's Hospital, Xiangya Hospital, and Beijing Children's Hospital.
Proficient in diseases
Diagnosis and treatment of common diseases in pediatric internal medicine, especially skilled in the diagnosis and treatment of pediatric respiratory system and neurological diseases, such as pediatric convulsions, epilepsy, asthma, and lung infections...
Voices
Can Tetralogy of Fallot be cured?
Tetralogy of Fallot consists of four types of cardiac malformations: first, a ventricular septal defect; second, right ventricular outflow tract obstruction; third, an overriding aorta; and fourth, right ventricular hypertrophy. The main treatment for this condition is surgical repair. In recent years, there have been continual advancements in surgical procedures. Many children undergo a definitive one-stage surgery in early childhood, which can completely cure the condition. Thus, if the symptoms are mild, a definitive surgery can be performed in one stage. If the symptoms are more severe, a palliative shunt surgery may be performed first, followed by the definitive surgery when the general condition improves, and it can still be cured.
How to reduce fever in children with roseola infantum
Infantile roseola is an acute febrile exanthematic disease caused by human herpesvirus type 6 or 7. The main clinical manifestation is a sudden high fever, with body temperatures reaching up to 39 degrees Celsius, or even above 40 degrees Celsius. Besides fever, most babies remain relatively alert, but some may experience febrile convulsions, so it is important to manage the fever promptly. Fever can be reduced by oral antipyretic medications or through rectal administration, commonly using ibuprofen and acetaminophen. These can be repeated every 4-6 hours. Physical cooling methods, such as wiping with warm water or taking a warm bath, can also be used in conjunction with medicinal treatments. (The use of medications should be under the guidance of a doctor)
What's going on with a child's diarrhea being watery?
In cases where a child's diarrhea is watery, it is generally considered that a viral infection could be the cause, such as rotavirus enteritis, which can produce yellow, watery stools. Exposure to cold leading to diarrhea can also result in watery stools; additionally, some intestinal bacterial infections may present with watery diarrhea. Therefore, it is important to analyze each specific situation. Using probiotics to regulate intestinal flora, and employing montmorillonite powder to protect the gastrointestinal mucosa can be considered. It is also advisable to visit a hospital to conduct routine stool tests, and if necessary, complete stool culture to guide further medication and treatment. (Medications should be used under the guidance of a doctor.)
Phenylketonuria is what type of inheritance?
Phenylketonuria is an autosomal recessive genetic disorder and is the most common congenital amino acid metabolism disorder. The main clinical features include intellectual disability, pale skin and hair pigmentation, and a mouse-like urine smell. This condition is named after the high levels of phenylketonic acid metabolites excreted in the urine of affected patients. Phenylketonuria is an autosomal recessive genetic disease, and its primary pathological mechanism is due to the lack of phenylalanine hydroxylase, which fails to convert phenylalanine into tyrosine, leading to increased concentrations of phenylalanine in the blood, cerebrospinal fluid, and various tissues. Because the main metabolic pathway is blocked, secondary metabolic pathways are enhanced, leading to the deamination of phenylalanine and the production of large amounts of phenylketonic acid. Through oxidation, this produces byproducts such as phenylacetic acid, phenyllactic acid, and para-hydroxyphenylketonic acid, thereby resulting in a series of clinical symptoms.
What should babies not eat when they have a cold?
When a baby has a cold, symptoms can include fever, coughing, a runny nose, and sneezing. Some may also experience vomiting, diarrhea, and loss of appetite. Thus, a cold can lead to a decrease in digestive function and loss of appetite. Regarding diet, it is important to provide light, easily digestible foods. If the baby is breastfed, the mother should also consume light and easily digestible foods; if the baby is formula-fed, the formula should be diluted. It's appropriate to add some supplementary foods such as vegetables and fruits. Meanwhile, spicy, stimulating, greasy, and hard-to-digest foods should be temporarily avoided during this period.
Is asthma common in children?
Childhood asthma is a common pulmonary disease. It manifests as recurrent coughing, wheezing, and difficulty breathing, along with reversible, obstructive respiratory diseases with airway hyperreactivity. This disease poses a significant health risk to children and is a commonly seen chronic respiratory condition with a high incidence, often characterized by recurrent attacks over a chronic course. If the condition is severe, it can affect the child's learning, activities, daily life, and can also impact the child's growth and development. If the child's treatment is delayed or inappropriate, it can eventually develop into adult asthma, becoming chronic and intractable. Therefore, this disease must be diagnosed and treated promptly, as it is a relatively common condition.
Do children with mild phenylketonuria need treatment?
Phenylketonuria is a common amino acid metabolic disease, primarily due to the deficiency of phenylalanine hydroxylase, preventing phenylalanine from being converted into tyrosine. This leads to the accumulation of phenylalanine and its keto acids in the body, which are then excreted in large amounts in the urine. It is a relatively common genetic amino acid metabolic disorder and is inherited as an autosomal recessive trait. Even in cases of mild symptoms, treatment is still required. The main treatment is a low-phenylalanine diet, which involves dietary control, as phenylalanine is an essential amino acid for protein synthesis. Special phenylalanine-formula milk powder is fed to infants, and at this stage, it is appropriate to add some complementary foods such as starchy vegetables and fruits, focusing on low-protein foods. The goal of dietary treatment is to maintain an appropriate concentration of phenylalanine in the blood.
Is childhood asthma dangerous?
Pediatric asthma is divided into remission and acute exacerbation periods. Generally speaking, pediatric asthma is very safe during the remission period. During this process, we just need to standardize, plan, and adhere to long-term medication. However, some asthma cases enter a continuous state during the acute exacerbation period, which may present with panting, shortness of breath, and breathing difficulties. This situation is very dangerous. We need to promptly provide treatment to relieve asthma and relieve spasms. If the medication does not provide relief, immediate hospital emergency treatment is required.
Why does phenylketonuria lead to intellectual disability?
Phenylketonuria is a common amino acid metabolic disease, mainly due to the deficiency of phenylalanine hydroxylase, which prevents phenylalanine from being transformed into tyrosine, leading to the accumulation of phenylalanine and its keto acids. Due to the lack of tyrosine in the body, it affects the growth and development of the brain, resulting in intellectual developmental delays. Therefore, children with phenylketonuria often exhibit intellectual disabilities, as well as some psychiatric and neurological symptoms, such as increased muscle tone, restlessness, hyperactivity, abnormal behavior, and heightened excitability.
Why can't people with phenylketonuria eat vitamin C?
Phenylketonuria is a common amino acid metabolic disorder. It primarily occurs because the patient's liver lacks phenylalanine hydroxylase, leading to the inability of phenylalanine to convert into tyrosine. This causes phenylalanine to accumulate in large amounts in the body, and it cannot be excreted through urine, presenting some corresponding clinical symptoms. The diet for phenylketonuria mainly involves avoiding high-protein foods, such as dairy, eggs, and soy products. Additionally, spicy, raw, and greasy foods should be avoided as they can negatively impact the health of the child. It is also beneficial to include starch-rich foods in the diet, such as potato starch, vermicelli, pumpkin, and Chinese yam, as these foods are low in phenylalanine and high in carbohydrates. Furthermore, vitamin C can be consumed without restrictions in cases of phenylketonuria, and it should be taken in moderation.