Vasectomy does not guarantee absolute prevention of pregnancy in the female partner. Male sterilization is a highly effective contraceptive method with a high success rate; however, there remains an extremely low risk of failure. In the short term following surgery, residual sperm may still be present and have not yet been fully cleared from the body, thus retaining a small possibility of conception. If unintended pregnancy occurs postoperatively, prompt medical evaluation is necessary to identify the underlying cause.

Prostatitis may lead to erectile dysfunction (ED). Inflammation of the prostate gland can irritate pelvic tissues, causing congestion and edema, thereby disrupting nerve conduction and local blood circulation—ultimately impairing erectile function. In most cases, this is functional ED, which typically improves gradually with appropriate treatment. However, if erectile dysfunction persists, prompt medical evaluation and intervention are essential.

Premature ejaculation may still occur despite regular physical exercise. While exercise can improve overall physical fitness and pelvic floor muscle control, it cannot completely prevent this condition. The causes of premature ejaculation are multifactorial, including psychological and emotional factors, heightened neural sensitivity, and local inflammation; exercise only plays a supportive role in improving the condition. Persistent difficulty controlling ejaculation warrants timely medical consultation.

Vas deferens obstruction is a relatively severe reproductive system disorder and a common cause of male infertility. It impedes the normal passage of sperm, resulting in azoospermia (absence of sperm in the ejaculate) or severe oligospermia (very low sperm count). Mild cases, if promptly treated, may regain patency; however, prolonged delays in treatment can lead to irreversible reproductive dysfunction. Couples experiencing prolonged unsuccessful conception should seek timely medical evaluation.

Recurrent fever in children does not necessarily require injections. Most fevers are caused by viral infections and can gradually resolve with oral antipyretics and the body’s own immune response. Injections or intravenous medications are considered only in cases of severe bacterial infection, dehydration, or complications. Prompt medical evaluation is essential if high fever persists alongside lethargy or decreased alertness.

Fruits such as pears, loquats, pomelos, oranges, and sugarcane may be consumed during coughing; moderate intake helps moisten the throat, alleviate discomfort caused by dryness, and relieve throat dryness and itching associated with coughing. If persistent high fever, dyspnea, or other symptoms occur, prompt medical evaluation and treatment at a hospital are recommended.

Compound Paracetamol and Amantadine Tablets can relieve cold-related symptoms but cannot directly eliminate the viruses that cause the common cold. As a combination preparation, it helps alleviate discomfort such as fever, headache, nasal congestion, and rhinorrhea; however, it does not shorten the overall duration of viral infection. If symptoms worsen despite medication, prompt medical attention is required.

Viral influenza does not necessarily require injections; most cases resolve gradually through the body’s own immune response, and injections cannot directly eliminate the virus. Intravenous medication is only indicated in severe cases—such as when bacterial infection or complications develop. Prompt medical attention is essential if high fever persists or if respiratory distress occurs.

Asthma is not an incurable disease. Although this chronic airway condition cannot be completely cured, it can be effectively controlled through standardized management, allowing patients to maintain long-term disease stability without affecting normal daily life or life expectancy. Most patients who adhere to evidence-based interventions can significantly reduce the frequency of asthma attacks. Prompt medical attention is required if persistent chest tightness or shortness of breath occurs.

Patients with gallstones are advised to maintain a daily water intake of 1,500–2,000 mL. Adequate hydration helps dilute bile and reduce biliary stasis, thereby slowing the growth of gallstones. Water intake may be slightly adjusted according to season and physical activity level; however, patients with heart failure or kidney disease must restrict their fluid intake. Seek prompt medical attention if severe abdominal pain or fever occurs.