In electrocardiography, the PR interval is the period, measured in milliseconds, that extends from the beginning of the P wave (the onset of atrial depolarization)...

This analysis calculates features such as the PR interval, QT interval, corrected QT (QTc) interval, PR axis, QRS axis, rhythm and more. The results from...

Look up PR or .pr in Wiktionary, the free dictionary. PR, P.R., Pr, pr, or Pr. may refer to: P.R. (TV series), a Canadian television sitcom Partisan Review...

in the AV node forms much of the PR segment on the ECG, and part of atrial repolarization can be represented by the PR segment. The distal portion of the...

combination of palpitations and when an electrocardiogram (ECG) show a short PR interval and a delta wave. It is a type of pre-excitation syndrome. WPW syndrome...

In Bayesian statistics, a credible interval is an interval used to characterize a probability distribution. It is defined such that an unobserved parameter...

sequence. There are a few key intervals that must be measured for proper analysis of a heart rhythm, The PR interval is the interval between the end of the P...

node. This condition is diagnosed via ECG, with PR intervals in excess of 200 milliseconds. The PR interval represents the length of time between the start...

is defined by progressive prolongation of the PR interval, with a resulting dropped beat (the PR interval gets longer and longer until a beat is finally...

block. It is diagnosed using an electrocardiogram, and is defined as a PR interval greater than 200 milliseconds. First degree AV block affects 0.65-1.1%...

the PR interval on consecutive beats followed by a blocked P wave (i.e., a dropped QRS complex). After the dropped QRS complex, the PR interval resets...

The prediction interval for any standard score z corresponds numerically to (1 − (1 − Φμ,σ2(z)) · 2). For example, Φ(2) ≈ 0.9772, or Pr(X ≤ μ + 2σ) ≈ 0...

measure the QRS interval start at the end of the PR interval (or beginning of the Q wave) to the end of the S wave. Normally this interval is 0.08 to 0.10...

complexes with a regular R-to-R interval represent the second rhythm. The PR interval will be variable, as the hallmark of complete heart block is the lack...

confirmed after a week. Specific changes, such as a shortened QT interval and prolonged PR interval, may be seen on an electrocardiogram (ECG). Treatment may...

with LGL syndrome have episodes of abnormal heart racing with a short PR interval and normal QRS complexes seen on their electrocardiogram when in a normal...

small squares) in a precordial lead. The baseline is either the PR interval or the TP interval. This measure has a false positive rate of 15–20% (which is...

ratio of 1:1. Normal P wave axis (0 to +75 degrees) Normal PR interval, QRS complex and QT interval. QRS complex positive in leads I, II, aVF and V3–V6, and...

waves first degree atrioventricular block manifesting as a prolonged PR-interval low amplitude QRS complexes in the right precordial leads atypical right...

systole Cardiac diastole ECG The EKG complex. P=P wave, PR=PR interval, QRS=QRS complex, QT=QT interval, ST=ST segment, T=T wave Wiggers with jugular venous...

superimposed upon T waves, therefore producing the appearance of prolonged QT intervals, when serum potassium levels fall below 3 mEq/L. The amount of potassium...

that this is quite different from the Wenckebach AV block, in which the PR interval gets progressively longer, before the dropped QRS segment. The pause...

first degree: prolonged PR interval (> 0.20 seconds) second degree mobitz type I (wenckebach): progressive lengthening of PR interval then dropped beat (p...

in the following progression: peaked T wave, shortened QT interval, lengthened PR interval, increased QRS duration, and eventually absence of the P wave...

inference, specifically predictive inference, a prediction interval is an estimate of an interval in which a future observation will fall, with a certain...

P waves: Upright, consistent, and normal in morphology and duration. PR interval: Between 0.12 and 0.20 seconds in duration. QRS complex: Less than 0...

state). ECG changes include faster repolarization (peaked T-waves), PR interval prolongation, widening of the QRS complex, and finally, asystole. Cases...

The QT interval is a measurement made on an electrocardiogram used to assess some of the electrical properties of the heart. It is calculated as the time...

refractory period Pacemaker potential Electrocardiography P wave PR interval QRS complex QT interval ST segment T wave U wave Hexaxial reference system Chamber...

disease states such as cardiac ischaemia. Electrocardiography PR interval QRS complex QT interval ST segment T wave U wave Longmore, Murray (2004). Oxford...