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48 Possible Causes for Flattened T Wave, Sinus Arrest

  • Lithium Toxicity

    Cardiovascular side effects are usually mild and manifest as nonspecific ECG changes, such as ST-T flattening and T-wave inversion.[] Initially, fluid therapy was started, but she lost consciousness and had a cardiac arrest for 2 minutes due to prolonged sinus arrest.[] The most common electrocardiographic finding is T-wave flattening.[]

  • 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[] The rhythms prior to pacemaker insertion in group 1 included sinus arrest with junctional bradyarrhythmias (n 9), atrial fibrillation with a slow ventricular rate (n 11),[] ) 8(9%) 7 (26.9%) Bradycardia (ᐸ50 beats/min) 5 (4.9%) 3(3.4) 2(7.6%) Junctional Tachycardia 0(0.0%) 1(1.3%) 0(0%) Sustained ventricular tachycardia 1(0.97%) 0(0%) 0(0%) Sinus[]

  • Quinidine

    T waves (without dysrhythmia), have occurred frequently and hypotension and ventricular tachycardia have occurred occasionally in patients receiving IV quinidine gluconate[] […] measures may be required. b While substantial cardiovascular toxicity generally has not occurred, ECG changes, including prolonged QT interval, widened QRS complex, and flattened[]

  • Hyperkalemia

    P wave flattening, may disappear increased amplitude and width PR interval prolonged prolonged QRS interval prolonged ST segment slight depression T wave increased amplitude[] arrest.[] Flattened P-waves Widened QRS complex Deep S-waves Eventually, merging of S and T waves Trend towards sine-wave at K over 7mmol/L Management of hyperkalemia The recommendations[]

  • Hypokalemic Periodic Paralysis

    Some electrocardiographic (ECG) findings associated with hypokalemia include flattened or inverted T waves, a U wave and ST depression.[] We report a rare case of a patient with a novel SCN4A mutation who presented, on ECG, extreme bradycardia and syncopal sinus arrest that required a temporary pacemaker implant[] arrest Serum K during attack: Low (2.0 mEq/L) Plasma aldosterone: Normal X-linked Episodic Prolonged Muscle Weakness (EMWX) 1 Chromosome Xp22.3; Recessive Clinical Onset[]

  • Hypermagnesemia

    Characteristic ECG changes include progressive QRS complex widening, PR interval prolongation, and flattened T waves.[] She was lethargic, her blood pressure was less than 50 mmHg, and electrocardiogram (ECG) revealed sinus arrest with junctional escape rhythm.[] waves and flattened p waves Complete AV block and asystole Correction Discontinue magnesium intake Antagonising Mg with Calcium Removing Magnesium from serum Di alysis – Treatment[]

  • Myxedema

    Electrocardiographic findings may include bradycardia, varying degrees of block, low voltage, nonspecific ST-segment changes, flattened or inverted T waves, prolonged Q-T[]

  • Hypokalemia

    […] than the T wave. flattening of the T wave.[] , sinus arrest, ventricular tachycardia, ventricular fibrillation, and asystole. 19 Treatment of Hyperkalemia GENERAL PRINCIPLES The goals of acute treatment are to prevent[] T wave of the electrocardiogram, and muscle weakness.[]

  • Subarachnoid Hemorrhage

    Electrocardiographic findings were as follows: inverted or flattened T waves (100%); QTc prolongation 0.45 seconds (90.0%); ST segment elevation (60.0%); and ST segment depression[] This is seen in hypoxic-ischemic brain injury and recent resuscitation from cardiopulmonary arrest .[] Other causes include: severe meningitis : breakdown of the blood-brain barrier allowing mildly hyperdense proteinaceous material to leak into the subarachnoid space 3 venous sinus[]

  • Accidental Hypothermia

    In hypercalcemia, the ECG shows a shortened QT interval, flattened T waves and QRS widening at very high levels. 4. Atrial fibrillation.[] Multiple other findings eventually develop including a shortened QT interval, ST depression, bundle branch blocks, widened QRS, prolonged PR interval, flattened T wave and[] The ECG manifestations of hyperkalemia begin with peaked T waves.[]

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