Acute myocardial infarction

DEFINITIONS

Beginning of treatment within 24 hours from start of attack – start of attack, i.e. start of acute symptoms (in case of absence of acute symptoms unconsciousness). If nondescript or intermittent syptoms precede prolongated serious symptoms followed by emergency call the start of attack is calculated from prolongated symptoms. If episodes with different symptoms took part, the start of attack should be calculated from episode with typical retrosternal chest pain lasting at least 20 minutes. If attack begins with nondescript slowly deepen symptoms (crescendo) the start of attack is not possible to specify. Treatment begins at the point of first medical contact.

Hospital admission – hospitalization a patient in an inpatient facility in acute care (excl nursing and rehabilitation care), involving a stay of at least 24 hours (admitted patient).

Hospitalized patient – for acute myocardial infarction (AMI) statistics only one hospital admission is counted for one AMI attack. Excluded are transfers to another acute-, rehabilitation or nursing care hospital. Patients with recurrent AMI attacks during one calendar year are all included.

Mean annual population — half the sum number of the population at the beginning and at the end of the year.

Morbidity rate per 100 000 inhabitants – number of persons with AMI (ICD-10 code I21 or I22) is divided by the population. The mean annual population is used for calculation.

Number of persons with AMI – persons who are Estonian residents with AMI (ICD-10 diagnosis code I21 or I22) attack are counted once per year. Includes prehospital deaths. Person’s age is counted by last attack in case of recurrent AMI attacks during a year.

Risk factors:

Type of infarction:

METHODOLOGY

The Estonian Myocardial Infarction Registry (EMIR) has been founded with the aim to improve the diagnosis and treatment of acute myocardial infarction and facilitate the planning of health care services for AMI as well as conduct epidemiological research.

EMIR is an electronic database including all hospitalized cases of AMI (International Classification of Diseases 10th version codes I21.0–I21.9 and I22.0–I22.9) in Estonia about Estonian residents. Submitting data of patients hospitalized due to AMI is mandatory for all hospitals.

The use of the personal identification number (ID-code) enables linkage with other national registries (e.g. Population Register, Health Insurance Fund database and Estonian Causes of Death Registry).

For table “AMI01: Number of persons with acute myocardial infarction and morbidity rate per 100 000 inhabitants by sex and age group“ prehospital deaths from Estonian Causes of Death Registry is used.

CLASSIFICATIONS

The International Statistical Classification of Diseases and Related Health Problems 10th Revision (ICD-10)

This classification is used to code diagnoses and submit the data about disease cases in accordance with the diagnoses. The classification system is available on the webpage of the World Health Organization.

LINKS

More detailed information in Estonian is available: http://www.infarkt.ee/

CONTACT

Gudrun Veldre

Estonian Myocardial Infarction Registry

Tartu University Hospital

Phone: +372 731 8459

E-mail: emir[at]infarkt.ee

 

Updated: 28.11.2018