block

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Related to Bundle branch block: Left bundle branch block, Right bundle branch block
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Synonyms for block

Synonyms for block

the uppermost part of the body

to stop or prevent passage of

to plug up something, as a hole, space, or container

block in: to draw up a preliminary plan or version of

Synonyms for block

a rectangular area in a city surrounded by streets and usually containing several buildings

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a three-dimensional shape with six square or rectangular sides

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a number or quantity of related things dealt with as a unit

housing in a large building that is divided into separate units

(computer science) a sector or group of sectors that function as the smallest data unit permitted

an inability to remember or think of something you normally can do

a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope

a metal casting containing the cylinders and cooling ducts of an engine

a platform from which an auctioneer sells

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the act of obstructing or deflecting someone's movements

stop from happening or developing

interfere with or prevent the reception of signals

run on a block system

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interrupt the normal function of by means of anesthesia

shut out from view or get in the way so as to hide from sight

stamp or emboss a title or design on a book with a block

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support, secure, or raise with a block

impede the movement of (an opponent or a ball)

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be unable to remember

shape by using a block

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shape into a block or blocks

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prohibit the conversion or use of (assets)

References in periodicals archive ?
ST segment criteria for the diagnosis of acute ischemia are affected by the presence of the left bundle branch block, because of the presented secondary ST changes that occur in this pattern.
Conclusion: The incidence of Intraventricular dyssynchrony is high among patients with heart failure and left bundle branch block.
Our findings are corroborated by a systematic review and meta-analysis by Qaddoura et al, in which ECG signs that were good predictors of a negative outcome for in-hospital mortality included S1Q3T3 (OR: 3.38, 95% CI: 2.46-4.66, p<0.001), complete right bundle branch block (OR: 3.90, 95% CI: 2.46-6.20, p<0.001), T-wave inversion (OR: 1.62, 95% CI: 1.19-2.21, p=0.002), right axis deviation (OR: 3.24, 95% CI: 1.86-5.64, p<0.001), and atrial fibrillation (OR: 1.96, 95% CI: 1.45-2.67, p<0.001)18.
Sgarbossa criteria [13] is used for electrocardiographic manifestations of ischaemia in the setting of left bundle branch block. The outcomes observed were heart failure as determined by highest Killip's class, [14] Arrhythmias, Regional wall motion abnormality (RWMA), Left ventricular ejection fraction (LVEF) and Death.
The resulting segments were divided into 18 different types of beats, namely, normal beat (NOR "N"), atrial premature contraction (APC "A"), fusion of ventricular and normal beat (FVN "F"), left bundle branch block (LBBB "L"), unclassifiable beat (UN "Q"), premature ventricular contraction (PVC "V"), right bundle branch block beat (RBBB "R"), ventricular flutter wave (VF "!"), atrial escape beat (AE "e"), fusion of paced and normal beat (FPN "f"), nodal (junctional) premature beat (NP "J"), isolated QRS-like artifact (-), aberrated atrial premature beat (AP "a"), ventricular escape beat (VE "E"), nodal (junctional) escape beat (NE "j"), nonconducted P-wave (blocked APB "x"), paced beat (PACE "/"), and supraventricular premature beat (SP "S").
A repeated 12-lead electrocardiogram revealed sinus tachycardia with incomplete right bundle branch block. Echocardiogram (performed after resuscitation maneuvers) showed a mildly reduced ejection fraction (44%).
QRSs show right bundle branch block with a QRS duration of 0.13 seconds, broad S waves in leads I, II, aVL, V5, V6, broad R waves in lead aVR, and broad R' waves in lead V1.
Other conduction abnormalities include right bundle branch block, sinus bradycardia, and prolonged QT interval.
Table 1: ECG findings of acute hair dye poisoning Manifestation Number (%) Normal 5 (10) ST-T change 21 (42) Bundle branch block 4 (8) AV Block 7 (14) Bundle branch with AV block 2 (4) Arterial fibrillation 3 (6) Arterial flutter 2 (4) Ventricular tachycardia 1 (2) APC 1 (2) EAT 1 (2) Ventricular ectopic 1 (2) Supraventricular tachycardia 1 (2) VPC 1 (2) Total 50 (100) ST-T, ST and T wave; AV, atrioventricular; APC, atrial premature complexes; EAT, ectopic atrial tachycardia; VPC, ventricular premature complexes; ECG, electrocardiographic.
(9) Sudden increases in right-sided pressure can lead to transient right bundle branch block, which may result in complete heart block in the setting of baseline left bundle branch block.
A wide complex tachycardia has a QRS duration >120 ms and may be caused by one of the following mechanisms: (i) ventricular tachycardia, which must be the default diagnosis in any patient with a wide complex tachycardia; (ii) supraventricular tachycardia with a right or left bundle branch block or an intraventricular conduction abnormality; (iii) pre-excited tachycardia (Wolff-Parkinson-White syndrome) over an accessory pathway; and (iv) pacemaker tachycardia.
Verapamil also reduced the frequency of chest blow induced bundle branch block (BBB), 0 of 7 verapamil strikes compared to 9 of 16 (56%) placebo strikes (p = 0.03).
The ECG findings revealed supraventricular heart rhythm, with left bundle branch block. The ultrasound revealed mild hepatosplenomegaly with right inguinal lymph node enlargement with an abscess in the left inguinal region.
New analyses from a large study conducted in 2009, called MADIT-CRT, presented at the American College of Cardiology's 2014 Scientific Sessions in March, showed that CRT-D in patients with asymptomatic or mildly symptomatic heart failure (NYHA I/II) significantly reduces the risk of death or complications from heart failure when the patient has left bundle branch block, a condition that causes the left ventricle to contract later than the right ventricle.