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34 Possible Causes for Flattened T Wave, Short QT Interval

  • Digoxin

    , inverted, or biphasic T waves .[] . - Flattened, negative or biphasic T waves. - QT interval shortening. - U wave amplitude may increase.[] The short QT interval, the “sagging” appearance in the inferior leads and the lack of voltage criteria for LVH indicates that this is digoxin effect rather than LVH.[]

  • Digitalis Toxicity

    Electrocardiographic signs of digitalis toxicity include first-degree atrioventricular (A-V) block with depressed S-T segments, shortened Q-T intervals, and flattened T waves[]

  • Digitalis

    Abstract A 19-year-old female was admitted to our department because of a hypertrophic palmaris digitalis II of the left hand displaying color changes. A thrill was easily palpated over the medial part of the finger. A review of her history revealed that this hypertrophy occurred after a blunt trauma to the left[…][]

  • Hypercalcemia

    At very high serum calcium levels ECG changes include slight prolongation of the PR and QRS intervals, T wave flattening or inversion, and the appearance of a J wave at the[] The ECG shows: Bizarre-looking QRS complexes Very short QT interval J waves notching of the terminal QRS, best seen in lead V1 Many thanks to Dr James Hayes, FACEM, for this[] QT interval [16] suggest hypercalcaemia.[]

  • Quinidine

    T waves (without dysrhythmia), have occurred frequently and hypotension and ventricular tachycardia have occurred occasionally in patients receiving IV quinidine gluconate[] Quinidine is also the only antiarrhythmic drug that normalized the QT interval in patients with the congenital short QT syndrome.[] AIMS: Short QT syndrome (SQTS) is an inherited disorder associated with abnormally abbreviated QT intervals and an increased incidence of atrial and ventricular arrhythmias[]

  • Acute Pericarditis

    Stages 2, 3, and 4 ECG findings consist of ST-segment normalization and T wave flattening, T wave inversion, and normalization of T waves, respectively.[] Bundle branch block with short PR interval in healthy young people prone to paroxysmal tachycardia.[] flatten; stage 3: symmetric T wave inversion throughout ECG; and stage 4: ECG normalization 2 .[]

  • Hypokalemic Periodic Paralysis

    Some electrocardiographic (ECG) findings associated with hypokalemia include flattened or inverted T waves, a U wave and ST depression.[] […] relatively short PR intervals). 3–5 Increased QRS voltage also has been reported in association with THPP, but it is a relatively nondiagnostic finding in young adult men[] interval.[]

  • Mitral Valve Prolapse

    interval 2 (0.07) Short-QT interval 1 (0.03) Brugada-like early repolarization 2 (0.07) Figure 1.[] Two children with long-QT interval (QTc, 510 and 530 milliseconds) and 1 child with short-QT interval (QTc, 300 ms) were detrained for a 6-month period without significant[] Left anterior hemiblock 3 (0.1) Right axis deviation ( 120 )* 5 (0.2) Left posterior hemiblock Ventricular preexcitation 6 (0.2) Complete RBBB 13 (0.5) Complete LBBB Long-QT[]

  • Angina Pectoris

    […] prolongation or a history of torsade de pointes and in those taking medications known to prolong the QT interval (eg, class IA or III antiarrhythmic agents).[] Organic nitrates (both short-acting forms such as sublingual nitroglycerin and long-acting forms such as isosorbide mononitrate) are nitric oxide donors and remain an absolute[] Vardenafil (but not sildenafil or tadalafil) carries a precautionary statement about prolongation of the corrected QT interval and should be avoided in patients with congenital QT[]

  • Long QT Syndrome 8

    The other reasons are compounding factors such as heart rate, presence of U-waves, and flattened T-waves. 5 Drug-induced torsades de pointes is a significant cause of morbidity[] […] of CSQTS is an abnormally short QT interval.[] […] fibrillation QT, ST and T-wave changes in SQTS Short QT interval, peaked T waves and short ST segments in two patients with SQTS 1.[]

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