Duchenne muscular dystrophy (DMD) is a recessive inherited genetic disorder caused by a mutation in the X chromosome and occurs in approximately 1 in 3,500 males. Generally, degeneration and atrophy of the respiratory muscles and myocardium lead to death before the age of 30 years. During anesthesia, rhabdomyolysis, malignant hyperthermia, and cardiac arrest are known risks caused by an inhalation anesthetic or succinylcholine; therefore, the selection of inhalation anesthetics or muscle relaxants requires caution. According to a study by Muenster et al. [1], 4% of DMD patients had difficult intubations and the frequency was especially high in older patients [2]. Thus, difficulty in securing the airway can be anticipated and sufficient muscle relaxation is required.The risks are known for depolarizing muscle relaxants. For non-depolarizing muscle relaxants, it is generally known that sensitivity increases, but the response and stability have not yet been established [2,3]. Therefore, preoperatively securing the airway and recovering respiratory function postoperatively can be considered the most challenging aspects in anesthesia.Thus, together with a review of the relevant literature, we report a case of general anesthesia management without muscle relaxation in a patient with DMD undergoing surgery for testicular cancer.
CASE REPORTA 29-year-old male patient with a height of 160 cm and a weight of 40 kg was diagnosed with testicular cancer and ad- Duchenne muscular dystrophy (DMD) is a relatively rare muscle disease with severe symptoms. Owing to the commonly limited mouth opening, cervical spine immobility, and deformation, DMD patients often present with a difficult airway. Patients with DMD are sensitive to sedation, anesthesia, and neuromuscular blockade. This risk increases as the disease progresses with age. The anesthetic management of these patients can cause various issues, presenting a challenge to anesthesiologists. We administered anesthesia for an orchiectomy in a patient with testicular cancer using total intravenous anesthesia with propofol and remifentanil without muscle relaxants. Although the patient was Mallampati grade IV due to neck stiffness, tracheal intubation was successfully performed with a portable videolaryngoscope. The intraoperative course was uneventful and recovery was rapid without postoperative complications. In conclusion, anesthesia without a muscle relaxant was successful and the patient recovered rapidly, even with a difficult tracheal intubation.