Introduction: Inappropriate sinus tachycardia is generally defined as an elevated resting heart rate (>90–100 bpm) with an exaggerated response to physical or emotional stress and a clearly sinus mechanism which is not secondary to a diagnosed somatic disease. Anxiety, a significant risk factor for cardiovascular disease, is recently recognized as a crucial issue in younger and older adults, with a causal relation to other risk factors, such as depression, substance use, overweight, sleep difficulties, or a sedentary life style. The aim of the study was to evaluate a possible relation between the level of anxiety, control of emotions in patients with manifestation of inappropriate sinus tachycardia and diagnosis of this syndrome. Material and methods: The study included 33 female patients with inappropriate sinus tachycardia (age range 31.8 ± 8.72) and 33 women (28.7 ± 4.4) without any cardiac diseases. The diagnosis of inappropriate sinus tachycardia was given by a cardiologist during hospitalisation of the patients in the 2^nd Department of Cardiology and Department of Electrocardiology, Medical University of Lodz, Lodz, Poland. For psychological assessment the State-Trait Anxiety Inventory and Courtauld Emotional Control Scale both self-report, paper and pencil inventories were used. Results: A statistically significant difference was found between the group of women with inappropriate sinus tachycardia and the group of healthy women regarding the Anxiety-Trait. The results of the study have shown no other statistically significant differences between tested groups. Conclusions: Inappropriate sinus tachycardia is related to increased anxiety. More clinical trials are needed to confirm its psychogenic basis.