interval


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Related to interval: Interval scale, Interval training

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.

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]

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.

in·ter·val

(in'tĕr-văl)
A time or space between two periods or objects; a break in continuity.

in·ter·val

(in'tĕr-văl)
A time or space between two periods or objects; a break in continuity.
References in periodicals archive ?
All the crisp weight vectors included in the processed comparison matrix with comparison possibility [p.sub.*] are included in interval weight vector W([p.sub.*]).
Interval numbers and arithmetic are explained in [7, 11, 13, 20].
This paper discusses the solution of quadratic programming with interval variables using a two-level programming approach that focuses on howto obtain the optimum solution in interval form, for both optimum point and optimum value.
In order for pediatric patients to receive medical care on par with that of adults, it is imperative that reference intervals be developed that accurately reflect physical development from birth through adolescence to adulthood.
Findings show both interval training and a continuous workout reduced overall weight and percentage body fat.
They also used many different approaches to interval and endurance exercise, making the findings difficult to interpret.
For a more complete explanation of the essense of the observation, it is proposed to consider the considered measurement process as a single observation in the form of one interval, Fig.
Those with multiple pregnancies, hypertension, diabetes mellitus, gestational diabetes, pre-eclampsia, eclampsia, previous history of pregnancy-induced hypertension, family history, presence of coronary heart or significant valvular heart disease, decompensated heart failure, any immunologic-rheumatologic disease, abnormal renal, hepatic, or thyroid function tests, atrial fibrillation, complete or incomplete bundle branch block, ST-T abnormalities, the use of any drugs that could affect Tp-e or QT interval, U waves or negative T waves on ECG, and electrolyte imbalances were excluded from the study.
Sex, the inhaled anesthetic agent, and interaction between those factors did not influence the QT interval, QTc, or Tp-Te/QT and Tp-Te/JT ratios.
Resting heart rate (beats/min), PR interval (ms), P wave (ms), QRS complex (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).
The second objective was to determine how modification of this formula taking into consideration QRS duration would compare to direct measurement of the JT interval in conduction delay induced by ventricular pacing.
Sunny intervals are also expected in Kitui, Makueni, Machakos, Kajiado and Taita Taveta.