Pathology: Tachycardia (rate >100)originating from sino-atrial node
Aetiology: Can be normal as a result ofincreased sympathetic drive e.g. exercise or anxiety
Pathological conditions includeinfection/sepsis, hyperthyroidism, PE and
phaeochromocytoma
Symptoms: Usually asymptomatic, fast,regular palpitations
Signs: Regular fast pulse
Investigations: Bloods:FBC, TFTs
24hourECG monitor: Detect arrhythmias
24hoururine collection: if phaeochromocytoma suspected
Treatment: Treatunderlying cause appropriately
Complications: Complications are related to aetiology
Prognosis: Depends on aetiology, usuallygood
Figure 1.3 Sinus Tachycardia
