Definition. An electrocardiographic finding in which there are two R waves, which are two deflections above the baseline resulting from a single ventricular depolarization. The first upward deflection in the complex is the R wave.

What does rSr mean on ECG?

Definition. An electrocardiographic finding in which there are two R waves, which are two deflections above the baseline resulting from a single ventricular depolarization. The first upward deflection in the complex is the R wave.

What is rSr pattern in V1 and V2?

When the QRS is ≥120 ms, usually this pattern corresponds to advanced right bundle branch block (RBBB) and/or right ventricular hypertrophy; or to some types of ventricular preexcitation (WPW pattern) [1], [2]. The ECG pattern of Rsr′ in leads V1-V2, with QRS < 120 ms, is a common electrocardiographic finding.

What causes rSr on ECG?

We often face this finding in asymptomatic and otherwise healthy individuals and the causes may vary from benign nonpathological variants to severe or life-threatening heart diseases, such as Brugada syndrome or arrhythmogenic right ventricular dysplasia.

What is a rSr complex?

The abnormal RSR’ complex arises from a terminal conduction delay (dissimilar to either RBBB or LBBB using the vectorcardiogram) of left ventricular (LV) depolarization within impaired tissue surrounding the infarct scar.

What is S1Q3T3?

However, the “S1Q3T3” pattern of acute cor pulmonale is classic; this is termed the McGinn-White Sign. Enlarge. A large S wave in lead I, a Q wave in lead III and an inverted T wave in lead III together indicate acute right heart strain.

What are the symptoms of Brugada syndrome?

Signs and symptoms that may be associated with Brugada syndrome include:

  • Dizziness.
  • Fainting.
  • Gasping, labored breathing, particularly at night.
  • Irregular heartbeats or palpitations.
  • Extremely fast and chaotic heartbeat.
  • Seizures.

What is a cor pulmonale?

Cor pulmonale is a condition that causes the right side of the heart to fail. Long-term high blood pressure in the arteries of the lung and right ventricle of the heart can lead to cor pulmonale.

What causes S1Q3T3 pattern?

Acute cor pulmonale can result in an S1Q3T3 pattern on an ECG, regardless of the cause, which includes acute bronchospasm, pulmonary embolism, pneumothorax, acute lung disease, and left posterior fascicular block [5].

What causes Romano Ward syndrome on the cellular level?

Mutations in the KCNQ1, KCNH2, and SCN5A genes are the most common causes of Romano-Ward syndrome. These genes provide instructions for making proteins that form channels across the cell membrane. These channels transport positively charged atoms (ions), such as potassium and sodium, into and out of cells.

What is the most common characteristic of Brugada syndrome pattern?

Signs and symptoms in patients with Brugada syndrome may include the following: Syncope and cardiac arrest: Most common clinical manifestations; in many cases, cardiac arrest occurs during sleep or rest. Nightmares or thrashing at night. Asymptomatic, but routine ECG shows ST-segment elevation in leads V1-V3.

What is a precordial?

In anatomy, the precordium or praecordium is the portion of the body over the heart and lower chest. Defined anatomically, it is the area of the anterior chest wall over the heart. It is therefore usually on the left side, except in conditions like dextrocardia, where the individual’s heart is on the right side.

What causes an RSR pattern in leads V1-V2?

One of the more frequent dilemmas in ECG interpretation is the differential diagnosis of an rSr’ pattern in leads V1 -V2 . We often face this finding in asymptomatic and otherwise healthy individuals and the causes may vary from benign nonpathological variants to severe or life-threatening heart dis …

Which leads are the RSR’in the inferior and precordial leads?

Patients were assigned to three groups: in group I (n = 13) the RSR’ was present in the precordial leads; in group II (n = 9) the RSR’ was present in the inferior limb leads; and in group III (n = 4) the RSR’ was present in both.

What is rSR pattern in QRS?

It is defined by QRS complex duration between 110 and 120 ms in adults and a rsr’, rsR’, or rSR’ pattern in leads V1 or V2 2, and it implies a partial block in the right Purkinje system.

What is rSR pattern in right ventricle?

The isolated presence of RSr′ pattern in lead V1 with QRS < 120 ms (isolated pattern of partial RBBB) can be considered a normal variant due to delay in the activation of the right ventricle (RV) located at proximal or peripheral aspect of the right bundle.