lucid interval

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the space between two objects or parts; the lapse of time between two events.
AA interval the interval between two consecutive atrial stimuli.
atrioventricular interval (AV interval)
2. in dual chamber pacing, the length of time between the sensed or paced atrial event and the next sensed or paced ventricular event, measured in milliseconds; called also atrioventricular or AV delay.
cardioarterial interval the time between the apical beat and arterial pulsation.
confidence interval an estimated statistical interval for a parameter, giving a range of values that may contain the parameter and the degree of confidence that it is in fact there.
coupling interval the distance between two linked events in the cardiac cycle.
His-ventricular (H-V) interval an interval of the electrogram of the bundle of His, measured from the earliest onset of the His potential to the onset of ventricular activation as recorded on eight of the intracardiac bipolar His bundle leads or any of the multiple surface ECG leads; it reflects conduction time through the His-Purkinje system.
lucid interval
1. a brief period of remission of symptoms in a psychosis.
2. a brief return to consciousness after loss of consciousness in head injury.
PA interval the interval from the onset of the P wave on the standard electrocardiogram (or from the atrial deflection on the high right atrial ECG) to the A wave on the His bundle ECG; it represents intra-atrial conduction time.
postsphygmic interval the short period (0.08 second) of ventricular diastole, after the sphygmic period, and lasting until the atrioventricular valves open.
P–R interval in electrocardiography, the time between the onset of the P wave (atrial activity) and the QRS complex (ventricular activity).
presphygmic interval the first phase of ventricular systole, being the period (0.04–0.06 second) immediately after closure of the atrioventricular valves and lasting until the semilunar valves open.
QRST interval (Q–T interval) in the electrocardiogram, the length of time between ventricular depolarization (the Q wave) and repolarization (the T wave); it begins with the onset of the QRS complex and ends with the end of the T wave.
VA interval [ventricular-atrial interval] the interval between a ventricular stimulus and the succeeding atrial stimulus; it is equal to the AA interval minus the atrioventricular interval.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

lu·cid in·ter·val

in psychoses or delirium, a rational period appearing in the course of the mental disorder.
Farlex Partner Medical Dictionary © Farlex 2012

lucid interval

Neurology A period preceding the loss of consciousness and coma in Pts with subdural and epidural hematomas and intracranial edema. Cf Window period.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
If we 'listen to what the texts have to tell us' we discover an administrative reliance on the restraining terms of idiocy, insanity, and the lucid interval, but these terms are not always consistent, or combined logically.
(38) Some children with diffuse brain edema have been described with lucid intervals. (37,39,40) A head injury occurs, and, analogous to the expanding subdural, the child may be conscious as the brain swells.
We recorded Lucid Interval long after that other stuff and then it came out before all of that stuff.
A full sleep study found a total sleep time of 451 minutes, sleep efficiency of 83% (without sleep apnea), and a REM latency of 10.5 minutes; the percentage of REM was 69.8%, the percent lucid intervals was 17.5%, and the percentages of S1, S2 and S3 sleep were 3.8%, 0.5% and 8.4%, respectively.
Scientific reality shows that lucid intervals do not occur in children who suffer the types of devastating injuries seen in AHT cases.
Stuart Woods' LUCID INTERVALS (9780142427729, $29.95) is narrated by actor Tony Roberts, who has appeared on Broadway stage and in films and twice been a Tony nominee.
Neurologic examination revealed dysarthria, right upper extremity weakness without spasticity, and periods of confusion interspersed with lucid intervals.
At other times the demoniac experienced what were specifically called "lucid intervals" according to Noydens: "for this the Exorcist will command the demon, that he not place an obstacle, and that he leave him [the demoniac] with his lucid intervals." (55) Cervantes scholars will recognize "lucid intervals" as a focus of literary criticism written about this novel.