interval

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interval

 [in´ter-val]
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.

in·ter·val

(in'tĕr-văl),
A time or space between two periods or objects; a break in continuity.
[L. intervallum, space between breastworks in a camp, an interval, fr. vallum, a rampart, wall]
Farlex Partner Medical Dictionary © Farlex 2012

interval

Vox populi A period of time or space between 2 discrete periods or objects. See AH interval, AV interval, Class interval, Confidence interval, Conference interval, Dosing interval, Escape interval, Lucid interval, PA interval, QT interval, V-A interval.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

in·ter·val

(in'tĕr-văl)
A time or space between two periods or objects; a break in continuity.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

in·ter·val

(in'tĕr-văl)
A time or space between two periods or objects; a break in continuity.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
In Mombasa, Tana River, Kilifi, Lamu and Kwale, sunny intervals are expected with temperatures ranging from 21 degrees Celsius to 30 degrees Celsius.
Turkana, West Pokot and Samburu will have sunny intervals with a temperature range of 26-35 degrees Celsius.
The CDC Environmental Health Laboratory already has experience developing reference ranges for chronic disease biomarkers in adults, and with additional funding it could use its expertise to generate accurate pediatric reference intervals as well.
Furthermore, this funding will enable CDC's National Health and Nutrition Examination Survey to obtain the samples from healthy children that the Environmental Health Laboratory will need for this initiative, and that other clinical labs and diagnostic manufacturers also need for their own crucial pediatric reference interval studies.
Both moderate training and intervals, of all types, led to reductions in body fat, the researchers found.
The distribution law is the same for all intervals;
The primary endpoint was the effect of the interaction between sex and inhaled anesthetics on changes in the QT interval, QTc, and Tp-Te/QT and Tp-e/JT ratios between baseline and after anesthesia.
ECG was recorded in supine position after a rest period of 10 min, AUTO mode in the instrument was selected, and the following parameters were noted in migraineurs and controls: Resting heart rate (beats/min), PR interval (ms), P wave (ms), QRS (ms), T wave (ms), QT interval (ms), QTc interval (ms), P axis (degrees), QRS axis (degrees), T axis (degrees), and P wave dispersion (in ms).
Some ideas of comparison of two intervals can be seen in Alefeld and Herzberger [15], Chanas and Kuctha [17], Klatte et al.
The accurate assessment of the QT interval is important to identify individuals at risk for potentially fatal arrhythmias in many conditions ranging from drug-induced cardiac toxicity [1-3] to genetic mutations of cardiac ion channels [4].
To create an inclusion function, it is possible to replace all the variables by their intervals and then all the included operators by their interval equivalents.
It is obtained not only from a crisp comparison matrix but also from an interval comparison matrix.