WordNet

a three-dimensional shape with six square or rectangular sides (同)cube
(computer science) a sector or group of sectors that function as the smallest data unit permitted; "since blocks are often defined as a single sector, the terms `block and `sector are sometimes used interchangeably"
support, secure, or raise with a block; "block a plate for printing"; "block the wheels of a car"
a solid piece of something (usually having flat rectangular sides); "the pyramids were built with large stone blocks"
housing in a large building that is divided into separate units; "there is a block of classrooms in the west wing"
a rectangular area in a city surrounded by streets and usually containing several buildings; "he lives in the next block" (同)city block
an inability to remember or think of something you normally can do; often caused by emotional tension; "I knew his name perfectly well but I had a temporary block" (同)mental_block
a number or quantity of related things dealt with as a unit; "he reserved a large block of seats"; "he held a large block of the companys stock"
interrupt the normal function of by means of anesthesia; "block a nerve"; "block a muscle"
run on a block system; "block trains"
shape by using a block; "Block a hat"; "block a garment"
shape into a block or blocks; "block the graphs so one can see the results clearly"
stamp or emboss a title or design on a book with a block; "block the book cover"
completely obstructed or closed off; "the storm was responsible for many blocked roads and bridges"; "the drain was plugged" (同)plugged
closed to traffic; "the repaving results in many blocked streets" (同)out of use
a group of countries in special alliance (同)axis
the transmission of heat or electricity or sound (同)conductivity
reactive or functioning or allowing movement in two usually opposite directions

PrepTutorEJDIC

(木・石などの,通例平らな面のある)『かたまり』 / 《米》(四団を街路に囲まれた)『区画』,街区 / 街区の1辺の距離(一般に40メートル前後) / 《英》ブロック(アパート・事務所・商店などに区切られている大きな建物) / 『妨害物』,障害物(obstacle);(障害によって生じた)停滞,渋滞 / 台木,台(まないた・肉切り台・まき割り台・せり売り台・帽子の木型など);《the~》炭頭台 / (特にアメリカンフットボールで)ブロック(相手の選手の突進を阻止する) / 滑車(pulley) / (座席券・株券などの)一組《+『of』+『名』》 / 〈通路など〉'を'『ふさぐ』,〈通行・進行など〉'を'妨げる / 〈帽子など〉の型取りをする / (特にアメリカンフットボールで)〈相手選手の突進〉'を'ブロックする;(ボクシングで)〈相手のパンチ〉'を'ブロックする
ブロック,圏(地理・共通の利害・政治・経済上の目的などのために団結した団体・国家などの結合体)
(熱・電気の)伝導;(液体を)管などで導くこと

UpToDate Contents

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1. 神経伝導検査の概要 overview of nerve conduction studies
2. 心室内伝導遅延への基本的アプローチ basic approach to delayed intraventricular conduction
3. 心筋梗塞後の伝導異常 conduction abnormalities after myocardial infarction
4. ジゴキシン中毒による不整脈 cardiac arrhythmias due to digoxin toxicity
5. 洞房結節の一時停止、停止、および進出ブロック sinoatrial nodal pause arrest and exit block

English Journal

Pulmonary vein isolation with incomplete antral ablation lines: Is more ablation necessary? Results of a randomized trial.

Gula LJ1, Leong-Sit P1, Manlucu J1, Hillock L1, Yee R1, Tang AS1, Klein GJ1, Skanes AC1.
Journal of cardiovascular electrophysiology.J Cardiovasc Electrophysiol.2015 Nov 5. doi: 10.1111/jce.12876. [Epub ahead of print]
BACKGROUND: A full circumferential set of antral lesions is not always required for bidirectional pulmonary vein conduction block. It is unknown whether a partial lesion set that isolates the veins will have clinical success rates similar to a full circumferential lesion set, and if procedural times
PMID 26538372

Comparison of the anterior and posterior mitral isthmus ablation lines in patients with perimitral annulus flutter or persistent atrial fibrillation.

Huemer M1, Wutzler A2, Parwani AS2, Attanasio P2, Matsuda H2, Blaschke F2, Boldt LH2, Haverkamp W2.
Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing.J Interv Card Electrophysiol.2015 Nov;44(2):119-29. doi: 10.1007/s10840-015-0033-1. Epub 2015 Jul 1.
BACKGROUND: Catheter ablation of left atrial linear lesions is an effective treatment option for perimitral flutter and is often used as a substrate modification approach for persistent atrial fibrillation. The two most popular mitral isthmus lines are those of the anterior or the posterior mitral i
PMID 26129787

Biatrial linear ablation in sustained nonpermanent AF: Results of the substrate modification with ablation and antiarrhythmic drugs in nonpermanent atrial fibrillation trial.

Wynn G1, Panikker S2, Morgan M3, Hall M3, Waktare J3, Markides V2, Hussain W4, Salukhe T5, Modi S3, Jarman J5, Jones DG4, Snowdon R3, Todd D1, Wong T2, Gupta D6.
Heart rhythm : the official journal of the Heart Rhythm Society.Heart Rhythm.2015 Oct 9. pii: S1547-5271(15)01247-3. doi: 10.1016/j.hrthm.2015.10.006. [Epub ahead of print]
BACKGROUND: More advanced atrial fibrillation (AF) is associated with lower success rates after pulmonary vein isolation (PVI), and the optimal ablation strategy is uncertain.OBJECTIVES: The purpose of this study was to assess the impact of additional linear ablation (lines) compared to PVI alone.ME
PMID 26455343