• Thumbnail for Hexaxial reference system
    The hexaxial reference system is a convention to present the extremity leads of the 12 lead electrocardiogram, that provides an illustrative logical sequence...
    3 KB (308 words) - 17:01, 18 July 2025
  • Thumbnail for Uremic pericarditis
    Pulseless electrical activity Sinoatrial arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome...
    3 KB (262 words) - 12:37, 14 February 2024
  • Thumbnail for Right axis deviation
    the heart. The hexaxial reference system can be used to visualise the directions in which the depolarisation wave may travel. On a hexaxial diagram (see...
    15 KB (1,661 words) - 19:51, 6 November 2024
  • Thumbnail for Trifascicular block
    Trifascicular block (category Articles needing additional medical references from February 2021)
    An electrophysiology study of the conduction system can help discern the severity of conduction system disease. In an electrophysiology study, trifascicular...
    4 KB (467 words) - 06:34, 28 November 2023
  • Thumbnail for Circulatory system
    In vertebrates, the circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the body...
    52 KB (5,819 words) - 22:03, 3 August 2025
  • Thumbnail for Left axis deviation
    The hexaxial reference system is a diagram that is used to determine the heart's electrical axis in the frontal plane....
    8 KB (898 words) - 06:19, 19 July 2025
  • Thumbnail for Bigeminy
    Pulseless electrical activity Sinoatrial arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome...
    6 KB (661 words) - 00:43, 15 January 2025
  • Thumbnail for Sinus tachycardia
    Pulseless electrical activity Sinoatrial arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome...
    16 KB (1,591 words) - 01:29, 26 May 2025
  • Thumbnail for Valvular heart disease
    2020. Retrieved 30 June 2021. Chapter 1: Diseases of the Cardiovascular system > Section: Valvular Heart Disease in Elizabeth D Agabegi; Agabegi, Steven...
    46 KB (5,236 words) - 07:42, 19 July 2025
  • Thumbnail for Sinus bradycardia
    Sinus bradycardia (category Articles needing additional references from August 2014)
    Pulseless electrical activity Sinoatrial arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome...
    7 KB (583 words) - 22:18, 15 July 2025
  • Thumbnail for Right ventricular hypertrophy
    criteria: Right axis deviation of more than (or equal to) 110° (see hexaxial reference figure) R-wave dominant over S-wave in V1 or V2 S-wave dominant over...
    15 KB (1,696 words) - 08:12, 8 March 2025
  • Thumbnail for Endocarditis
    from the body. NBTE usually occurs during a hypercoagulable state such as system-wide bacterial infection, or pregnancy, though it is also sometimes seen...
    13 KB (1,281 words) - 03:38, 26 May 2025
  • Thumbnail for Coronary thrombosis
    blood vessel, leading to obstruction of blood flow within the circulatory system. Coronary thrombosis refers to the formation and presence of thrombi in...
    14 KB (1,468 words) - 17:00, 16 July 2025
  • Thumbnail for ST elevation
    Pulseless electrical activity Sinoatrial arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome...
    8 KB (869 words) - 10:12, 12 August 2024
  • Thumbnail for Right bundle branch block
    is a heart block in the right bundle branch of the electrical conduction system. During a right bundle branch block, the right ventricle is not directly...
    11 KB (972 words) - 18:30, 16 July 2025
  • Thumbnail for Left atrial enlargement
    Pulseless electrical activity Sinoatrial arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome...
    8 KB (878 words) - 13:31, 9 June 2025
  • Thumbnail for First-degree atrioventricular block
    atrioventricular block (AV block) is a disease of the electrical conduction system of the heart in which electrical impulses conduct from the cardiac atria...
    10 KB (1,009 words) - 06:28, 4 February 2025
  • Thumbnail for Electrocardiography
    Electrocardiography (category All articles lacking reliable references)
    augmented limb leads aVR, aVL, and aVF form the basis of the hexaxial reference system, which is used to calculate the heart's electrical axis in the...
    96 KB (10,487 words) - 04:52, 2 August 2025
  • Thumbnail for Second-degree atrioventricular block
    atrioventricular block (AV block) is a disease of the electrical conduction system of the heart. It is a conduction block between the atria and ventricles...
    14 KB (1,508 words) - 13:04, 24 September 2024
  • Thumbnail for Cardiac tamponade
    Pulseless electrical activity Sinoatrial arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome...
    24 KB (2,440 words) - 05:19, 19 July 2025
  • Thumbnail for Subdural hematoma
    tentorium cerebelli. This can be a chronic, stable process, since the feeding system is low-pressure. In such cases, subtle signs of bleeding—such as effacement...
    28 KB (3,178 words) - 18:59, 18 July 2025
  • Thumbnail for Ectopic beat
    disturbance of the cardiac rhythm frequently related to the electrical conduction system of the heart, in which beats arise from fibers or group of fibers outside...
    4 KB (360 words) - 16:25, 17 July 2025
  • Thumbnail for ST depression
    Tachycardia Reciprocal ST elevation Mitral valve prolapse Central nervous system disease, such as stroke A mnemonic can be used for some causes of ST depression...
    6 KB (693 words) - 23:58, 20 May 2025
  • Thumbnail for Premature ventricular contraction
    Premature ventricular contraction (category All articles lacking reliable references)
    happen for the following reasons: Activation of the sympathetic nervous system, due to anxiety and/or physiological stress, for example hypovolemia caused...
    30 KB (3,081 words) - 07:00, 19 July 2025
  • Thumbnail for Pericarditis
    Pulseless electrical activity Sinoatrial arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome...
    29 KB (2,604 words) - 06:54, 19 July 2025
  • Thumbnail for Heyde's syndrome
    in the prevention of bleeding in the vasculature of the gastrointestinal system where small arterioles are common, as platelets cannot bind to damaged blood...
    24 KB (2,582 words) - 20:47, 24 May 2025
  • Thumbnail for Variant angina
    abnormalities. Acetylcholine is normally released by the parasympathetic nervous system (PSNS) at rest, and causes dilation of the coronary arteries. While acetylcholine...
    32 KB (3,744 words) - 12:49, 25 July 2025
  • Thumbnail for Junctional rhythm
    StatPearls. StatPearls Publishing. PMID 32491596. ECG Interpretation: A 2-in-1 Reference for Nurses. Lippincott Williams & Wilkins. 2005. ISBN 9781582553955. "ECG...
    9 KB (906 words) - 21:04, 25 May 2025
  • Pulseless electrical activity Sinoatrial arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome...
    5 KB (529 words) - 21:16, 24 July 2025
  • Thumbnail for Torsades de pointes
    falls in the vulnerable phase of the cardiac cycle. In the Lown grading system of ventricular arrhythmias, the R-on-T phenomenon is the fifth, most threatening...
    26 KB (2,985 words) - 15:45, 20 June 2025