With the super-aging of society, dental patients often have multiple chronic diseases, increasing the risk of these complications becoming more severe. Furthermore, specific local anesthetics used in dentistry can cause allergic reactions or toxicity, and the adrenaline they contain places a burden on the cardiovascular system. Naturally, the risk of cardiac arrest is also considered high. The dental office situation is very specific, and it is impossible to completely prevent incidents. However, clear strategies for responding to sudden emergencies during dental treatment are not yet established. In this article, we provide comments and guidelines on emergency procedures appropriate to the actual situation：(A) cardiopulmonary resuscitation (CPR) for cardiac arrest, (B) aspiration during dental treatment, and (C) anaphylaxis. It is hoped that globally applicable guidelines, including CPR and airway obstruction management suitable for the dental environment, will be established in the future.

A man in his 30s developed toxic shock syndrome (TSS) caused by a TSST-1-producing staphylococcus, triggered by a postoperative wound infection. Nausea and vomiting preceded the development of diffuse erythema and hypotension. Based on the clinical findings, staphylococcal TSS was suspected, and emergency source control was attempted by removing intraosseous foreign bodies and performing wound irrigation, followed by initiation of meropenem, vancomycin, and clindamycin. Circulation was maintained with fluid resuscitation and norepinephrine, and the symptoms improved. When postoperative patients present with high fever, nausea/vomiting, diffuse erythema, and hypotension, it is important to consider staphylococcal TSS and to promptly implement early source control and appropriate antibiotic administration, even before all findings are present or the causative organism has been identified.