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54 Possible Causes for P Wave Absent, Prolonged QT Interval

  • Ventricular Fibrillation

    ECG : [ 1 ] evidence of MI, prolonged QT interval, short PR, WPW pattern or other conditions. CXR: signs of left heart failure, pulmonary hypertension.[patient.info] Answers Rhythm: Irregular Rate: Unable to determine P Wave: absent PR interval: absent QRS: absent Interpretation: Ventricular Fibrillation (Fine) Description The morphologic[ekg.academy] It is characterized by prolongation of the QT interval, as well as T-wave abnormalities and polymorphic VT.[emedicine.medscape.com]

  • Electrolyte Imbalance

    ECG shows prolonged QT intervals # 96.[slideshare.net] U waves B. Absent P waves C. Elevated T waves D. Elevated ST segment 57. A. Obtaining a controlled IV infusion pump B. Monitoring urine output during administration C.[proprofs.com] Mar 18, '08 by janina08RN Hypocalcemia- Prolonged ST and QT intervals Hypercalcemia- shortened ST segment - widened T wave Hypokalemia- ST depression - shallow, flat, inverted[allnurses.com]

  • Accidental Hypothermia

    An increased PR interval, a widened QRS complex, and a prolonged QT interval signal progressing hypothermia.[nursingcenter.com] His bundle electrocardiography was performed on a patient with accidental hypothermia on whom the standard electrocardiogram (ECG) showed absent P waves, prominent J waves[ncbi.nlm.nih.gov] QT interval, adjusted for HR, was prolonged in 72.8% of the cases.[ncbi.nlm.nih.gov]

  • Ventricular Tachycardia

    The patient's initial electrocardiogram was remarkable for a prolonged QT interval, and it was discovered that multiple family members had died of cardiac events as young[ncbi.nlm.nih.gov] Answers Rhythm: Regular Rate: 150 P Wave: absent PR interval: n/a QRS: Wide and bizarre Interpretation: Ventricular Tachycardia[ekg.academy] Triggered Activity – QRS falling on T-wave – occurs with prolonged QT interval - Electrolytes – Hypokalemia, Hypomagnesemia, Hypocalcemia - Drugs that prolong QT interval[errolozdalga.com]

  • Sinus Tachycardia

    The QT interval measures cardiac repolarization, and prolongation is associated with adverse cardiovascular outcomes and death.[ncbi.nlm.nih.gov] The tachycardia ECG may be unremarkable, with P waves absent (hidden in the QRS).[patient.info] […] and the QT interval (uncorrected) will be long.[courses.kcumb.edu]

  • Atrial Flutter

    Wesley and Turnquest documented torsades de pointes after adenosine was given for diagnostic testing in a patient with a prolonged QT interval obscured by sinus tachycardia[nejm.org] Practice Strip Answers Rhythm: Regular Rate: Ventricles - 80, Atria - 320 P wave: "F" waves PR interval: absent QRS: 0.08 Interpretation: Atrial Flutter 4:1[ekg.academy] […] response NA ( 234) Potential adverse effects include prolonged QT interval and various proarrhythmias Use is restricted to trained prescribers and facilities In-hospital[aafp.org]

  • Left Bundle Branch Block

    […] of the QT interval inherent in LBBB.[ncbi.nlm.nih.gov] The presence of a mid-QRS notching in more than two consecutive leads was a good predictor for the presence of SF (P 0.01), and when combined with an absent R-wave in lead[ncbi.nlm.nih.gov] The evaluation of the QT interval in the presence of left bundle branch block (LBBB) is associated with the challenge to discriminate native QT interval from the prolongation[ncbi.nlm.nih.gov]

  • Atrial Fibrillation

    From a cardiac perspective, crizotinib is associated with 2 main cardiac effects, QT interval prolongation and bradycardia.[ncbi.nlm.nih.gov] P waves if arrhythmia is not captured on ECG then Holter monitoring in the outpatient setting these patients are hemodynamically stable telemitry in the inpatient setting[medbullets.com] Careful monitoring of renal function, electrolytes, and QT interval is recommended.[clevelandclinicmeded.com]

  • Sinus Arrest

    Certain medications may prolong the QT interval predisposing the patient to ventricular tachycardia 4.[andrews.edu] Occasionally and when the P waves are absent for a relatively long time, escape beats appear, as other groups of myocardial cells undertake the pacemaking process for a brief[symptoma.com] Prolonged QT intervals indicate a lengthened relative refractory period (vulnerable period).[ceufast.com]

  • Bradyarrhythmia

    A prolonged QT interval correlates with increased risk for the development of ventricular arrhythmia .[lecturio.com] Junctional rhythm, with absent P waves and a narrow QRS complex, was the primary arrhythmia in 10 episodes.[nature.com] Diagnosis is made via 12 lead EKG and will show an absent P wave, QRS wave and T wave (asystole).[lecturio.com]

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