What is the most common cause of hiccups in the right lower abdomen after abdominal surgery?

Patients who are re-visiting the hospital can go to the hospital according to the department they visited last time. For first-time patients, those with cough, sputum, fever, chest tightness, weakness and breathlessness may first go to the respiratory medicine department; those with chest pain and coughing up blood may go to the thoracic surgery department; for patients with suspected or confirmed TB, the doctor may recommend a visit to the relevant specialist hospital.