This is a multi-centre, observational, ambispective study, which will retrospectively and prospectively collect clinical and socio-demographic data from medical records of outpatients with arterial hypertension (HTN) initiated with the amlodipine/indapamide/perindopril SPC in real clinical settings.

375 patients to be included in the study in order for at least 300 patients to complete the study and provide an estimated 90% power of the study.

75 outpatient general practitioners and cardiologists will participate in this study.

Patients will be managed in accordance with medical standards and clinical guidelines implemented in routine clinical practice. Once a patient is included in the study there will be 2 more additional visits scheduled for assessment of a patient's hemodynamic parameters as well as his/ her eligibility to continue to participate in the study, quality of life and treatment adherence statuses as well as presence or absence of adverse events. Second visit (V2) will be taking place approximately 8 weeks (± 1 week) after the date of the SPC initiation, visit V3 will be taking place approximately 12 weeks (± 1 week) after the date of the SPC initiation.

Inclusion Criteria:

• Obtained signed informed consent from the patient.
• Patients of 18 years and older.
• Treatment with the amlodipine/indapamide/perindopril SPC in accordance with the Summary of Product Characteristics (SmPC) approved for medical use in the Russian Federation (RF) (Arterial hypertension - SBP ≥ 140 mm Hg and/or DBP ≥ 90 mm Hg), for a period of 2 to 4 weeks at the time of inclusion in the study.
• Absence of any other additional antihypertensive medical treatment with β-blockers, α-blockers, I1-imidazoline receptor agonists, loop and potassium-sparing diuretics from the initiation of the SPC to the inclusion visit (V1).
• Clinical parameters of the primary interest (resting SBP and DBP) are available in medical records for the nearest date before the initiation of the amlodipine/indapamide/perindopril SPC.

Exclusion Criteria:

• Subjects who are unwilling or unable to provide a signed Informed Consent Form.
• Any contraindication to the treatment with the amlodipine/indapamide/perindopril SPC according to its' approved SmPC for medical use in RF.
• Presence of indications for concomitant therapy with β-blockers, α-blockers, I1-imidazoline receptor agonists, loop and potassium-sparing diuretics.
• Expected poor adherence to the administration of the prescribed SPC due to patient's lack of co-operation that according to the physician's opinion, is likely to jeopardize the interaction between the patient and the investigator during the study.
• Any severe, decompensated or unstable somatic diseases or conditions that according to investigator discretion are life-threatening or worsen the prognosis for the patient: stroke/TIA, myocardial infarction or unstable angina occurred within 3 months before the inclusion date, angina pectoris IV functional class, chronic heart failure IV functional class by NYHA, current decompensation of diabetes mellitus, autoimmune or oncological diseases, severe or chronic poorly controlled cardiac arrhythmias, gastrointestinal disorders affecting absorption, severe hepatic diseases, pancreatic diseases, severe allergic reactions, connective tissue diseases etc.
• Secondary arterial hypertension.
• Alcohol or any drug abuse.
• Surgical interventions on heart or coronary vessels (i.e., heart valve replacement, stent implantation or CABG), or any non-cardiological serious surgical intervention that are planned within next 3 months and may require withdrawal or changes in current therapy.
• Participating in any other clinical trial currently or for 30 days period before informed consent was signed.
• Patient's decision to withdraw from the study due to any reasons.
• Any contraindication to the treatment with the amlodipine/indapamide/perindopril SPC according to its' approved SmPC for medical use in RF occurred during the follow-up period.
• Clinical situation(s) requiring adding to the SPC other CV medicines such as β-blockers, α-blockers, I1-imidazoline receptor agonists, diuretics, calcium antagonists and/or ACE inhibitors.
• Clinical situation(s) requiring withdrawing the SPC from the treatment scheme of a patient.
• Uncooperative patient's behavior resulting, upon investigating physician's opinion, in resolute unwillingness of the patient to collaborate with the physician therefore jeopardizing effectiveness of the entire treatment.

outpatients with arterial hypertension (HTN) who do not receive any other concomitant antihypertensive medicines within 12 weeks from the initiation of the SPC.