The side effects of Risumic tablets can be divided into two categories: common adverse reactions and serious adverse reactions, involving multiple systems such as blood, digestion, and cardiovascular health. The following provides a detailed explanation from the perspectives of frequency of occurrence and clinical management. Special attention should be paid to high-risk reactions such as differentiation syndrome and QT interval prolongation.

1. Common adverse reactions (≥ 20%)

Mainly including bleeding tendency (such as nosebleeds, gum bleeding), nausea, musculoskeletal pain, and increased risk of infection. Abnormal laboratory indicators often include disturbances in phosphate metabolism, elevated transaminase levels, and changes in parathyroid hormone. Regular monitoring of relevant indicators is necessary.

2. Hematological toxicity

The incidence of febrile neutropenia is up to 20%, which may lead to severe infections. Abnormal bleeding accompanied by thrombocytopenia, manifested as black stool, hematuria, or subcutaneous bruising, requires close monitoring of blood routine.

3. Cardiovascular system risk

QTc prolongation is typical cardiac toxicity and may progress to apical torsion ventricular tachycardia. When patients experience palpitations or fainting, they should immediately stop taking medication and correct electrolyte imbalances, avoiding the use of other arrhythmogenic drugs.

4. Differentiation syndrome

The characteristic manifestations are fever, difficulty breathing, and multiple organ edema, usually occurring in the early stages of medication. Urgent intravenous injection of dexamethasone is required, as delayed treatment may lead to fatal consequences such as respiratory failure.

5. Digestive system response

The incidence of diarrhea, decreased appetite, and constipation is relatively high, and severe cases may lead to pancreatitis. If accompanied by persistent abdominal pain or fat diarrhea, amylase testing should be performed and medication should be suspended.

6. Special population risk

Children may develop pseudo brain tumors or premature closure of sutures, and intracranial pressure and bone age need to be monitored. Elderly patients are more prone to edema and fatigue, and it is recommended to adjust the dosage according to creatinine clearance rate.