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Lateralized Periodic Discharges (LPDs)
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Lateralized Periodic Discharges (LPDs)

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Questions and Answers

What is the purpose of continuous EEG monitoring after cardiac arrest?

  • To administer medication
  • To monitor blood pressure
  • To measure oxygen saturation
  • To detect seizures and prognosticate (correct)

    • What is the purpose of continuous EEG monitoring after cardiac arrest?

  • To monitor heart function
  • To determine prognosis only
  • To detect seizures only
  • To detect seizures and determine prognosis (correct)

    • What is the most common etiology of lateralized periodic discharges (LPDs) in adult patients?

  • Anoxic encephalopathy
  • Ischemic stroke (correct)
  • Brain tumors
  • Viral or autoimmune encephalitis

    • Which EEG pattern is NOT consistently associated with poor prognosis after cardiac arrest?

    <p>Reactive background</p> Signup and view all the answers

    What percentage of patients with LPDs were comatose in three large series?

    <p>Between 10% and 35%</p> Signup and view all the answers

    Which EEG patterns are consistently associated with poor prognosis after cardiac arrest?

    <p>Isoelectric pattern and burst-suppression</p> Signup and view all the answers

    What percentage of patients after cardiac arrest have been reported to experience nonconvulsive seizures?

    <p>10-25%</p> Signup and view all the answers

    What is the most common association of LPDs in neonates?

    <p>Hypoxic-ischemic encephalopathy</p> Signup and view all the answers

    What percentage of patients after cardiac arrest experience nonconvulsive seizures (NCS)?

    <p>Between 10% and 25%</p> Signup and view all the answers

    What is the clinical significance of LPDs?

    <p>LPDs indicate an unstable, potentially epileptogenic state</p> Signup and view all the answers

    Why is early initiation of continuous EEG monitoring important after cardiac arrest?

    <p>To detect nonconvulsive seizures and status epilepticus</p> Signup and view all the answers

    When is early initiation of cEEG monitoring important after cardiac arrest?

    <p>Within 24 hours</p> Signup and view all the answers

    What is the predictive value of lack of background reactivity on EEG after cardiac arrest?

    <p>100% positive predictive value for mortality</p> Signup and view all the answers

    What is the prevalence of LPDs in patients with altered sensorium and a high suspicion for nonconvulsive seizures (NCS)?

    <p>More than 50%</p> Signup and view all the answers

    What is the positive predictive value for mortality of a nonreactive EEG background?

    <p>100%</p> Signup and view all the answers

    What is the association between LPDs and consciousness in patients without acute brain injury?

    <p>LPDs are an independent predictor of decreased consciousness in patients without acute brain injury</p> Signup and view all the answers

    Which EEG patterns are nonreactive and considered poor prognostic features, though not all are independent indicators of poor outcome?

    <p>Alpha, theta, and spindle coma patterns</p> Signup and view all the answers

    Which coma patterns are considered poor prognostic features?

    <p>Alpha, theta, and spindle</p> Signup and view all the answers

    Which EEG pattern is associated with poor neurologic outcomes, but not universally so?

    <p>Burst-suppression</p> Signup and view all the answers

    Is burst-suppression universally associated with poor neurological outcomes?

    <p>It depends on the specifics of the pattern</p> Signup and view all the answers

    What is the association between LPDs and epilepsy?

    <p>LPDs can be associated with epilepsy in some cases</p> Signup and view all the answers

    Is nonconvulsive status epilepticus (NCSE) universally a poor prognostic sign?

    <p>No</p> Signup and view all the answers

    Which EEG pattern is universally associated with a poor neurologic outcome?

    <p>Isoelectric pattern</p> Signup and view all the answers

    Study Notes

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    Description

    Test your knowledge on lateralized periodic discharges (LPDs) with this informative quiz! Learn about the causes, association with seizures, and controversial management of this neurological phenomenon. Keywords: LPDs, herpes encephalitis, ischemic stroke, seizures, management.

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