tachycardia
TACHYCARDIA

Tachycardia or tachyarrhythmia is used to describe the presence of cardiac rhythm abnormality in states when cardiac rate is increased to >100 bpm.

Divided into supraventricular and ventricular tachycardia.

Signs and symptoms related to rapid heart rate are altered sensorium, angina, shortness of breath, myocardial infarction, hypotension and other signs of shock (eg cold clammy skin, low urine output), heart failure or pulmonary congestion.

Tachycardia Signs and Symptoms

Introduction

  • Ventricular tachycardia is more common in patients with a history of cardiac disease
  • Atrioventricular nodal reentrant tachycardia (AVNRT) is more common in women than in men
  • In adolescents, AVNRT and atrioventricular reentrant tachycardia (AVRT) are more prevalent
  • Use of the accessory pathway for tachycardia is more frequent in younger population and decreases with age

Definition

  • Used interchangeably with tachyarrhythmias, used to describe the presence of cardiac rhythm abnormality in states when cardiac rate is increased to >100 beats per minute (bpm)

Signs and Symptoms

Serious signs and symptoms are often demonstrated at ventricular rates >150 bpm

Signs and symptoms related to rapid heart rate (HR):

  • Altered sensorium
  • Angina
  • Hypotension
  • Shirt flapping/neck pulsations (more common in AVNRT)
  • Polyuria (more common in AVNRT)
  • Other signs of shock (eg cold clammy skin, low urine output), heart failure (HF) or pulmonary congestion
  • Shortness of breath
  • Myocardial infarction
  • Palpitations
  • Syncope, lightheadedness

Risk Factors

  • Hypertension
  • Diabetes mellitus (DM)
  • Obesity
  • Smoking
  • Increasing age
  • Valvular heart disease
  • Heart failure
  • Myocardial infarction
  • Cardiothoracic surgery
  • Excessive alcohol intake
Digital Edition
Asia's trusted medical magazine for healthcare professionals. Get your MIMS Cardiology - Malaysia digital copy today!
Sign In To Download
Editor's Recommendations
Most Read Articles
5 days ago
Ivermectin confers benefits in the treatment of COVID-19, with a recent study showing that its use helps reduce the risk of death especially in patients with severe pulmonary involvement.
4 days ago
Mental health comorbidities are common among patients with type 2 diabetes mellitus and may lead to worse outcomes, a recent study has found.
Roshini Claire Anthony, 13 Nov 2020

Diabetes is a key risk factor for heart failure (HF), which is the leading cause of hospitalization in patients with or without diabetes. SGLT-2* inhibitors (SGLT-2is) have been shown to reduce the risk of hospitalization for HF (HHF) regardless of the presence or absence of diabetes.

Yesterday
Vitamin D deficiency may be a contributing factor to the mortality rate among patients with the novel coronavirus disease (COVID-19), reports a new study.