Republic of Singapore Air Force Helicopter Search-and-Rescue and Medical Evacuations: A 5-Year Review.

The Republic of Singapore Air Force (RSAF) provides Helicopter Search-and-Rescue (SAR) and Helicopter Medical Evacuation (Heli-Medevac) coverage for the Singapore Aeronautical Search and Rescue Region (ASSR) in the South China Sea, spanning 840,000 km2. This region contains busy international shipping lanes and air traffic routes. Each year, Singapore's Helicopter SAR and Heli-Medevac service is activated multiple times to rescue personnel lost at sea or to evacuate ill and injured ship sailors or passengers to tertiary hospitals in Singapore for stabilization and advanced care. This is a retrospective review on all civilian SAR and Heli-medevac activations by the RSAF over a 5-year period from 2016 to 2020. Case profiles, presenting conditions, in-flight treatment, and patient outcomes are reviewed and discussed. Key operational observations made from RSAF's SAR and Heli-Medevac, as well as lessons learned from these missions, are discussed in this article.

Refractory Thyrotoxicosis in Oropharyngeal Squamous Cell Carcinoma Invading the Thyroid Gland.

OBJECTIVE: Thyrotoxicosis from local invasion of the thyroid gland by an extrathyroidal malignancy is rare. We describe a patient with thyrotoxicosis secondary to invasion of the thyroid gland by an oropharyngeal squamous cell carcinoma (OPSCC). To our best knowledge, this has not been reported. CASE REPORT: A 62-year-old Indian man with histologically proven, p16-negative, cT3N3bM0 (stage IVb) posterior OPSCC was admitted for elective gastrostomy. Biochemical thyroid profile was normal before admission, and there was no thyroid invasion radiologically. The patient developed persistent fever and tachycardia associated with an elevated white cell count and C-reactive protein. This was treated as sepsis, and antibiotic therapy was initiated for 17 days without response. An extensive septic workup did not reveal any infection. A subsequent neck computed tomography revealed rapid progression of the OPSCC, with the invasion of bilateral thyroid lobes. Thyroid function tests revealed primary hyperthyroidism. Antibodies indicative of Graves' disease were negative. A tracheostomy was performed due to impending airway compromise. The patient showed minimal clinical improvement with medical management, and thyroid function continued to worsen. He died due to cardiorespiratory collapse due to tumor progression, new-onset atrial fibrillation, and poor underlying cardiac function. DISCUSSION: We report a rare observation of thyrotoxicosis secondary to thyroid gland invasion by OPSCC. This highlights the need for a high index of suspicion of malignancy-induced hyperthyroidism and evaluation of thyroid function early in febrile/tachycardic patients with locoregionally advanced head and neck SCCs. Urgent oncological treatment may be necessary to control thyrotoxicosis.

Adaptations of a Tertiary Otorhinolaryngology Head and Neck Surgery Department in Singapore during the COVID-19 Outbreak.

PURPOSE: The novel coronavirus 2019 (COVID-19) outbreak which was first reported in Wuhan, China has been declared a pandemic by the World Health Organization on March 11, 2020. Otorhinolaryngologists deal intimately with pathologies of the head and neck region and upper respiratory tract and have been reported as a vulnerable group of healthcare workers who may be more susceptible to COVID-19 nosocomial infection. METHODS: In this article, we provide a comprehensive overview of the adaptations of Singapore's largest tertiary Otorhinolaryngology department during the COVID-19 outbreak. This was undertaken via an evidence-based approach. The relevant medical literature and evidence underlying our adaptations are highlighted. RESULTS: A four-pronged strategy including (1) personnel segregation, (2) triaging and decantment, (3) use of personal protective equipment and (4) changes in clinical practice was employed. The strategy was bolstered by drawing upon a collective learnt experience from the 2003 Severe Acute Respiratory Syndrome (SARS) outbreak. CONCLUSION: A rigorous framework which can preserve operationality while navigating the heightened risks during this outbreak is critical for every Otorhinolaryngology department. As the pandemic continues to evolve and more scientific reports of this disease are made available, approaches will need to be morphed.