Related Experiment Video

Updated: May 26, 2026

A Novel Digital Platform for a Monitored Home-based Cardiac Rehabilitation Program
04:24

A Novel Digital Platform for a Monitored Home-based Cardiac Rehabilitation Program

Published on: April 19, 2019

Tele-Electrocardiography and Mortality: Clinical Outcomes in Digital Electrocardiography Cohort-Data from Belo

Gabriela Miana de Mattos Paixão1,2, Carla Paula Moreira Soares1, Paulo Gomes Rodrigues1

  • 1Telehealth Center Hospital das Clínicas of the Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil.

Global Heart
|May 25, 2026
PubMed

Insights

Electrocardiogram (ECG) abnormalities significantly increase mortality risk in Brazil. This large cohort study links ECG data to health records, revealing major abnormalities as strong predictors of death and hospitalization.

Area of Science:

  • Cardiology
  • Public Health
  • Epidemiology

Background:

  • Cardiovascular diseases are a leading global and Brazilian cause of death.
  • Electrocardiograms (ECGs) are crucial for diagnosing and predicting cardiovascular conditions.

Purpose of the Study:

  • To establish the CODE-BH cohort by linking ECG data with hospitalization and mortality records.
  • To investigate the association between ECG abnormalities and clinical outcomes in a large Brazilian population.

Main Methods:

  • Linked 474,764 ECGs (2006-2018) from 337,021 patients to public health hospitalization and mortality data in Belo Horizonte.
  • Utilized probabilistic linkage methods and a standardized questionnaire for clinical data.
  • Analyzed mortality rates and associated factors, including ECG findings using Minnesota Code.

Main Results:

  • The overall mortality rate was 3.4% over a mean follow-up of 3.3 years.
  • Older age, male sex, comorbidities, and major ECG abnormalities were linked to increased mortality.
  • Any ECG abnormality, particularly major ones, significantly elevated the risk of mortality and cardiovascular hospitalization.

Conclusions:

  • The CODE-BH cohort provides valuable epidemiological data on cardiovascular disease outcomes in Latin America.
  • ECG abnormalities are significant predictors of mortality and cardiovascular hospitalization.
  • This linkage of ECGs to clinical outcomes offers novel insights for public health research and cardiovascular disease management.

Keywords:
cardiovascular hospitalizationelectrocardiogramelectronic cohortmortality

More Related Videos

Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function05:03

Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function

Published on: December 11, 2019

Related Concept Videos

Electrocardiogram01:29

Electrocardiogram

An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...
Pulse rhythm01:30

Pulse rhythm

Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
Holter Monitor: 24-Hour Monitoring01:23

Holter Monitor: 24-Hour Monitoring

Holter monitoring is a continuous electrocardiography (ECG) recording that tracks the heart's electrical activity over an extended period, generally 24 to 48 hours. This noninvasive diagnostic tool detects irregular heart rhythms that may not be captured during a standard ECG performed in a clinical setting.DeviceThe Holter monitor is a portable, small device connected to several electrodes on the patient's chest. These electrodes detect the heart's electrical signals and transmit them to the...
Hypertension III: Clinical Manifestations and Diagnostic Studies01:30

Hypertension III: Clinical Manifestations and Diagnostic Studies

Hypertension is asymptomatic and also referred to as the "silent killer" until it progresses to a severe stage or causes target organ disease. Patients may experience symptoms stemming from the strain on blood vessels and tissues in various organs or the heart's increased workload.Physical exams might show no abnormalities other than high blood pressure. Signs of vascular damage, when present, correspond to the organs supplied by the affected vessels, leading to target organ damage. For...
Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin to...
Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...