ECG

Arrhythmias Overview

• Definition: Arrhythmias are abnormal heart rhythms that can result in the heart beating too quickly, too slowly, or in an irregular pattern.

• Significance: They can affect how well the heart functions and may lead to complications such as stroke or heart failure.

Understanding ECG (Electrocardiogram)

• Purpose of ECG: An ECG is a test that records the electrical activity of the heart over a period of time, allowing healthcare professionals to identify arrhythmias and other heart conditions.

• Components of ECG:

  • P Wave: Represents atrial depolarization.

  • QRS Complex: Represents ventricular depolarization.

  • T Wave: Represents ventricular repolarization.

Interpreting an ECG

• Initial Interpretation: Before learning specific arrhythmias, interpret an ECG focusing on rhythm, rate, and regularity.

• Heart Rate Calculation: Count the number of R waves in a given time interval to determine heart rate (e.g., 300 divided by the number of large squares between R waves).

• Regular vs. Irregular Rhythm: Assess whether the distance between the R waves is consistent (regular) or varies (irregular).

• Identifying Rhythm Types: Familiarize with common rhythms through visual assessment before delving into arrhythmia details.

• Practical Application: By interpreting ECGs without in-depth knowledge of arrhythmias, one can develop an intuitive understanding of the heart's electrical activity.

Feeling of Arrhythmias

• Symptoms: Patients may experience palpitations, dizziness, chest pain, or fainting.

• Physical Impact: The sensation of an irregular heartbeat might manifest as a fluttering or skipped heartbeat feeling.

• Connection to ECG: Understanding your ECG findings can correlate with the symptoms experienced during arrhythmias.

Conclusion

• Importance of Familiarization: Gaining hands-on experience in interpreting ECGs helps bridge the gap between theory and practice for recognizing arrhythmias.