…Cluster headache. High flow oxygen on a reservoir mask is the first line treatment during an attack and aborts most attacks within 15–20 minutes…

…Correct selection of the country risk cluster is therefore essential. The clusters include different European and surrounding countries, and the applicable regional category should be…

…syndrome is therefore both a clinical risk factor cluster and a marker of broader metabolic dysfunction. Associated abnormalities may include increased apoB and apoC III…

…Clinical presentation and symptoms The characteristic symptom is severe angina occurring at rest. Episodes frequently cluster between midnight and 8 AM and may be accompanied…

…until the sinoatrial node recovers and starts discharging. Less than 3 consecutive beats (or from a latent pacemaker (or any other ectopic focus) are referred…

…with clusters occurring in the morning within a few hours of awakening. Pain is the most common presenting complaint. The pain is deep and visceral…

…the sinoatrial node) is a common finding in athletes and during sleep; in these scenarios, it should not be considered abnormal. On the other hand…