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90 Possible Causes for Dizziness, Flattened T Wave, Prolonged QT Interval

  • Hypokalemia

    Clinical features include transient periods of muscle weakness and tetany, dizziness, abdominal pains and constipation.[] […] than the T wave. flattening of the T wave.[] SCN5A-1103Y was associated with QT interval prolongation (2.7 milliseconds; P .001) and potentiated the effect of hypokalemia on QT interval prolongation (14.6 milliseconds[]

  • Mitral Valve Prolapse

    MVP is usually asymptomatic in the absence of significant regurgitation, although there are reports that some patients experience chest pain, dyspnea, dizziness, and palpitations[] Her post-resuscitation ECG showed a prolonged QT interval which progressively normalised over the same day.[] In some individuals, MVP is silent or associated with palpitations, dizziness, chest pain, and abnormal electrocardiogram (ECG) repolarization with or without ventricular[]

  • Electrolyte Imbalance

    The symptoms of an electrolyte imbalance can include: fatigue dizziness nausea weakness Chemotherapy can cause your electrolyte levels to become too low or too high.[] Clinical signs of hyperkalaemia include muscle weakness, hypotension , bradycardia and loss of cardiac output, and ECG changes may include peaked T waves and flattened P waves[] Prolonged QT interval D. Shortened ST segment 68. A. Prominent U waves B. Prolonged PR interval C. Depressed ST segment D. Widened QRS complexes 69. A. Alcoholism B.[]

  • Quinidine

    Rhinitis Angioedema Tinnitus Vertigo Dizziness Fatigue Hot sweaty skin Fever Rash Blurring of vision Dizziness Nausea Vomiting Diarrhea Abdominal pain Headache Impaired hearing[] T waves (without dysrhythmia), have occurred frequently and hypotension and ventricular tachycardia have occurred occasionally in patients receiving IV quinidine gluconate[] During the quinidine infusion, the patient experienced a prolonged QT interval and an episode of supraventricular tachycardia.[]

  • Adrenal Insufficiency

    Available data suggest that patients with PAI may be underreplaced with FC as symptoms and signs indicating chronic MC underreplacement, such as salt craving and postural dizziness[] If potassium is above 7.0 mmol/L and hyperkalaemic ECG changes are present (eg. peaked T waves wide QRS complex flattened P waves), treat with either of the following: give[] […] of the QT interval.[]

  • Subarachnoid Hemorrhage

    A 39-year-old Japanese man visited our hospital with a 3-day history of mild headache, shoulder stiffness, and a feeling of dizziness.[] 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[] […] the QT interval sinus bradycardia Three distinct patterns of subarachnoid hemorrhage have been described each with their own etiology and treatment/prognostic implications[]

  • Phenothiazine

    […] balance trembling or shaking dizziness lip smacking or other uncontrollable movements difficulty urinating skin rash/discoloration.[] Common side effects include: drowsiness, dizziness, headache, low blood pressure, and blurred vision.[] Side effects such as dizziness, dry mouth, sedation, blurred vision or constipation may start or get worse with the combination.[]

  • Mesoridazine

    Mesoridazine may cause dizziness or drowsiness. If you experience dizziness or drowsiness, avoid these activities.[] […] or inversion of T-waves; Miscellaneous — fatigue, lethargy, transient scotomata. dehydration, weight loss, tendency to sleep... ‎[] QT interval contraindication 111975006 Coma contraindication 371632003 Granulocytopenic disorder contraindication 417672002 DOID:12987 Congenital long QT syndrome contraindication[]

  • Thioridazine

    This drug may make you dizzy or drowsy. Alcohol or marijuana can make you more dizzy or drowsy.[] As with other phenothiazines, benign repolarization changes such as prolongation of the Q-T interval, flattening of the T wave and the appearance of a U wave have been reported[] Abstract In December 2000, the Committee for Safety of Medicines (CSM) advised that thioridazine may prolong QT intervals risking arrhythmias.[]

  • Digoxin

    Abstract A 70-year-old woman with a history of atrial fibrillation, on digoxin, presented with nausea, vomiting, and dizziness two days after initiation of clarithromycin[] , inverted, or biphasic T waves .[] Feeling dizzy Getting up or moving more slowly should help.[]

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