Pericardial friction rub: Difference between revisions

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Revision as of 16:27, 19 January 2014

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: João André Alves Silva, M.D. [2]

Overview

The pericardial friction rub, also pericardial rub, is a sign on the precordial exam, detected by auscultation, that suggests irritation of the pericardium and the diagnosis of pericarditis. Inflammation of the pericardial sac causes the parietal and visceral surfaces of the roughened pericardium to rub against each other. This produces an extra cardiac sound of to-and-fro character with both systolic and diastolic components. One, two, or three components of a pericardial friction rub may be audible. A three-component rub indicates the presence of pericarditis and serves to distinguish a pericardial rub from a pleural friction rub, which ordinarily has two components. It resembles the sound of squeaky leather and is often described as grating, scratching, or rasping. The sound is often loud and may even mask the other heart sounds. Friction rubs are usually best heard between the apex and sternum but may be widespread. The sound has three parts: two diastolic, and one systolic.

Causes

Life Threatening Causes

Life-threatening causes include conditions which may result in death or permanent disability within 24 hours if left untreated.

Common Causes

In alphabetical order. [1] [2]

Causes by Organ System

Cardiovascular No underlying causes
Chemical/Poisoning No underlying causes
Dental No underlying causes
Dermatologic No underlying causes
Drug Side Effect No underlying causes
Ear Nose Throat No underlying causes
Endocrine No underlying causes
Environmental No underlying causes
Gastroenterologic No underlying causes
Genetic No underlying causes
Hematologic No underlying causes
Iatrogenic No underlying causes
Infectious Disease No underlying causes
Musculoskeletal/Orthopedic No underlying causes
Neurologic No underlying causes
Nutritional/Metabolic No underlying causes
Obstetric/Gynecologic No underlying causes
Oncologic No underlying causes
Ophthalmologic No underlying causes
Overdose/Toxicity No underlying causes
Psychiatric No underlying causes
Pulmonary No underlying causes
Renal/Electrolyte No underlying causes
Rheumatology/Immunology/Allergy No underlying causes
Sexual No underlying causes
Trauma No underlying causes
Urologic No underlying causes
Miscellaneous No underlying causes

Causes in Alphabetical Order

Diagnosis

History and Symptoms

History includes:

  • Recent viral exposure
  • Fever
  • Trauma

Physical Examination

A careful exam should be conducted to evaluate the patient for signs of cardiac tamponade.


Below is the video demonstrating Pericardial friction rub:

{{#ev:youtube|EUCp_3_vwtw}}


Laboratory Findings

  • Labs include:

Electrocardiogram

ECG for potential MI, pericarditis or other cardiac problems

Chest X Ray

Depending upon the underlying cause and if an effusion is present, the chest x ray may show signs of cardiomegaly

Echocardiography or Ultrasound

If there is a clinical suspicion of cardiac tamponade, and echocardiogram should be performed to assess the size of the effusion, to guide pericardiocentesis.

Treatment

  • Hemodynamic stability is intact
  • Supplemental oxygen

Acute Pharmacotherapies

Indications for Surgery

An emergency pericardiocentesis is indicated in the presence of cardiac tamponade, a large symptomatic pericardial effusion, or to establish the diagnosis in a case of suspected malignant or tuberculous pericarditis.

References

  1. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:77 ISBN 1591032016
  2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:68 ISBN 140510368X

See also



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