左前下行枝
WordNet
- toward or on the left; also used figuratively; "he looked right and left"; "the political party has moved left"
- a turn toward the side of the body that is on the north when the person is facing east; "take a left at the corner"
- the hand that is on the left side of the body; "jab with your left" (同)left_hand
- those who support varying degrees of social or political or economic change designed to promote the public welfare (同)left wing
- location near or direction toward the left side; i.e. the side to the north when a person or object faces east; "she stood on the left"
- intended for the left hand; "I rarely lose a left-hand glove" (同)left-hand
- being or located on or directed toward the side of the body to the west when facing north; "my left hand"; "left center field"; "the left bank of a river is bank on your left side when you are facing downstream"
- of or belonging to the political or intellectual left
- of or near the head end or toward the front plane of a body
- earlier in time (同)prior
- a major thoroughfare that bears important traffic
- a blood vessel that carries blood from the heart to the body (同)arteria, arterial blood vessel
- coming down or downward
PrepTutorEJDIC
- leaveの過去・過去分詞
- 《名詞の前にのみ用いて》『左の』,左方の / 《しばしばl-》(政治上の)左翼の,左派の,革新派の / 左に,左方に / 《通例 the ~》『左』,左方,左側 / 《しばしばthe L-》左翼の政党(団体),左派 / 〈U〉(野球で)左翼,レフト(left field);〈C〉左翼手(left fielder) / 〈C〉(ボクシングで)左手打ち
- (場所などが)前の,前部の;(…より)前に位置する《+『to』+『名』》 / (時・事件などが)以前の,先の;(…より)前の《+『to』+『名』》
- 動脈 / (道路・水路・鉄道などの)勘線,(通信の)主チャンネル
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/03/14 09:40:51」(JST)
[Wiki en表示]
| Artery: Anterior interventricular branch of left coronary artery |
Sternocostal surface of heart. (Anterior descending branch labeled at upper right.)
|
| Latin |
ramus interventricularis anterior arteriae coronariae sinistrae |
| Gray's |
p.547 |
| Supplies |
anterolateral myocardium, apex, interventricular septum, 45-55% of the left ventricle (LV) |
| Source |
left coronary artery |
| Branches |
septals, diagonals |
The "LAD", or left anterior descending artery (or anterior interventricular branch of the left coronary artery, or anterior descending branch) is an artery of the heart.
Contents
- 1 Course
- 2 Supply
- 3 Branches
- 4 "The Widowmaker"
- 5 Additional images
- 6 External links
Course[edit]
It passes at first behind the pulmonary artery and then comes forward between that vessel and the left auricula to reach the anterior interventricular sulcus, along which it descends to the incisura apicis cordis.
In 78% of cases, it reaches the apex of the heart.
Supply[edit]
It supplies the anterolateral myocardium, apex, and interventricular septum. The LAD typically supplies 45-55% of the left ventricle (LV).
Branches[edit]
The LAD gives off two types of branches: septals and diagonals.
- Septals originate from the LAD at 90 degrees to the surface of the heart, perforating and supplying the anterior 2/3rds of the interventricular septum.
- Diagonals run along the surface of the heart and supply the lateral wall of the left ventricle and the anterolateral papillary muscle.
Tight, critical stenosis (95%) of the proximal LAD in a patient with Wellens' Warning
"The Widowmaker"[edit]
Because the LAD provides much of the bloodflow for the left ventricle, which in turn provides much of the propulsive force for ejecting oxygenated blood to systemic circulation via the aorta, blockage of this artery is particularly associated with mortality. In the medical community ischemic heart attacks associated with this blood vessel are colloquially called "the Widowmaker."
Additional images[edit]
Coronary arteries (labeled in red text) and other major landmarks (in blue text).
Left anterior descending (or interventricular) artery is labeled at right.
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The arch of the aorta, and its branches.
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Human heart with coronary arteries
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Heart coronary territories
External links[edit]
- anterior+interventricular+branch%20of%20left%20coronary%20artery at eMedicine Dictionary
- Anatomy photo:20:09-0102 at the SUNY Downstate Medical Center - "Heart: The Left Coronary Artery and its Branches"
- SUNY Figs 20:03-08 - "Anterior view of the heart."
- 168165435 at GPnotebook
This article incorporates text from a public domain edition of Gray's Anatomy.
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List of arteries of torso · chest (TA A12.2.01–04,11, GA 6.598)
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| Pulmonary |
- Right pulmonary artery
- Left pulmonary artery (Ligamentum arteriosum)
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| Coronary |
- Right coronary: SA nodal
- AV nodal
- Atrial
- Right marginal
- Posterior interventricular
Left coronary: Anterior interventricular
- Left circumflex (Left marginal)
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Ascending aorta/
aortic arch |
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Brachiocephalic
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- Thyreoidea ima
- Right subclavian
- Right common carotid
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Left common carotid
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- External carotid
- Internal carotid
- Carotid body
- Carotid sinus
- Carotid bifurcation
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Left subclavian
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- Internal thoracic: Anterior intercostal
- Thymic
- Pericardiacophrenic
- Perforating branches
- terminal (Musculophrenic, superior epigastric)
- Kacheshmarova's artery (Arteria xiphia (Arteria africana))
- Costocervical trunk: Highest intercostal (Posterior intercostal 1–2)
- Deep cervical
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Other
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Descending/
thoracic aorta |
- visceral: Bronchial
- Esophageal
- Mediastinal
- parietal: Posterior intercostal 3·11
- Subcostal
- Superior phrenic
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anat (a:h/u/t/a/l,v:h/u/t/a/l)/phys/devp/cell/prot
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noco/syva/cong/lyvd/tumr, sysi/epon, injr
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proc, drug (C2s+n/3/4/5/7/8/9)
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UpToDate Contents
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English Journal
- Correlation of chronic renal dysfunction and albuminuria with severity of coronary artery lesions in patients with coronary artery disease.
- Jia D1, Li W, Liu J.Author information 1Department of Cardiology, The First Affiliated Hospital of China Medical University, 155th North of Nanjing Street, Heping District, Shenyang, 110001, Liaoning Province, China, JDL2001@263.net.AbstractThis study was conducted to investigate the possible correlation of chronic renal dysfunction and albuminuria with the severity of coronary artery lesions in patients with coronary artery disease (CAD). Two-hundred and ninety-nine patients who had undergone coronary angiography for suspected CAD were stratified into three groups according to the glomerular filtration rate (GFR): group I included 144 patients with normal renal function GFR >90 ml/(min × 1.73 m(2)), group II included 97 patients with mild renal impairment GFR 60-89 ml/(min × 1.73 m(2)), and group III included 58 patients with moderate renal impairment GFR <60 ml/(min × 1.73 m(2)). Patients were then stratified into two groups according to the albuminuria level (0; minimal, 1+, 2+, 3+): the albuminuria negative group (negative = 0) included 171 patients and the albuminuria positive group (positive = minimal, 1+, 2+, 3+) included 128 patients. Clinical features and coronary lesion characteristics were compared among these groups. Patients with more severe renal dysfunction and positive albuminuria had a higher incidence of CAD (66.7 vs. 70.1 vs. 72.4 %, p = 0.025 and 64.2 vs. 75.0 %, p = 0.032), more multi-vessel disease (31.2 vs. 41.2 vs. 53.4 %, p = 0.004 and 33.3 vs. 46.1 %, p = 0.015), more left anterior descending branch lesions (50.7 vs. 56.7 vs. 60.3 %, p = 0.012 and 49.1 vs. 61.7 %, p = 0.009), and a higher Gensini score (42.3 ± 14.7 vs. 46.1 ± 19.9 vs. 52.8 ± 21.2, p = 0.026 and 44.0 ± 16.0 vs. 50.5 ± 20.2, p = 0.017). In conclusion, chronic renal dysfunction and albuminuria may be important factors determining the occurrence and the severity of CAD. Albuminuria was an especially significant indicator at the early stage of renal dysfunction.
- Cell biochemistry and biophysics.Cell Biochem Biophys.2014 May;69(1):55-9. doi: 10.1007/s12013-013-9765-7.
- This study was conducted to investigate the possible correlation of chronic renal dysfunction and albuminuria with the severity of coronary artery lesions in patients with coronary artery disease (CAD). Two-hundred and ninety-nine patients who had undergone coronary angiography for suspected CAD wer
- PMID 24114373
- Hybrid coronary revascularization for multivessel coronary artery disease.
- Hu S1, Gao R.Author information 1Departments of aSurgery bCardiology, National Center for Cardiovascular Disease, Fuwai Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences cState Key Laboratory of Cardiovascular Disease, Beijing, People's Republic of China.AbstractHybrid coronary revascularization intends to combine the durability and survival advantage of the left internal mammary artery to left anterior descending coronary artery graft by a minimally invasive surgical procedure and the interventional therapy for non-left anterior descending coronary artery vessels to achieve complete revascularization. It provides a feasible and attractive alternative to conventional coronary artery bypass grafting and percutaneous coronary intervention to target multivessel coronary artery disease, and advances the individualized, patient-oriented treatment for heart disease. In initial experiences, this new approach has yielded favorable early or midterm results in selected patients with multivessel coronary artery disease. However, available data related to these outcomes following hybrid revascularization are limited to retrospective studies with relatively small sample sizes. In this review, we aim to provide an overview of hybrid revascularization, and discuss appropriate patient selection, procedure techniques, and the main literature pertaining to the hybrid revascularization.
- Coronary artery disease.Coron Artery Dis.2014 May;25(3):258-65. doi: 10.1097/MCA.0000000000000085.
- Hybrid coronary revascularization intends to combine the durability and survival advantage of the left internal mammary artery to left anterior descending coronary artery graft by a minimally invasive surgical procedure and the interventional therapy for non-left anterior descending coronary artery
- PMID 24487941
- Quicker yet safe: skeletonization of 1640 internal mammary arteries with harmonic technology in 965 patients.
- Kieser TM1, Rose MS, Aluthman U, Narine K.Author information 1Department of Cardiac Sciences, LIBIN Cardiovascular Institute of Alberta, University of Calgary, Calgary, Alberta, Canada.AbstractOBJECTIVES: Skeletonization of the internal mammary artery (IMA) facilitates arterial grafting and has been shown to reduce deep sternal infection but is more time-consuming and tedious than pedicle harvest. We wished to determine if use of harmonic technology (HT) facilitates skeletonization of the IMA and is as safe as the conventional technique of skeletonization.
- European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery.Eur J Cardiothorac Surg.2014 May;45(5):e142-50. doi: 10.1093/ejcts/ezu024. Epub 2014 Feb 26.
- OBJECTIVES: Skeletonization of the internal mammary artery (IMA) facilitates arterial grafting and has been shown to reduce deep sternal infection but is more time-consuming and tedious than pedicle harvest. We wished to determine if use of harmonic technology (HT) facilitates skeletonization of the
- PMID 24574446
Japanese Journal
- Pre-procedural combined coronary angiography and stress myocardial perfusion imaging using 320-detector CT in unprotected left main and ostial left anterior descending artery intervention
- Cardiovascular intervention and therapeutics 30(3), 283-286, 2015-07
- NAID 40020575148
- CASE REPORT : A case of delayed occlusive dissection of the right coronary artery during coronary intervention of the left anterior descending artery
- Cardiovascular intervention and therapeutics 30(2), 155-161, 2015-04
- NAID 40020473787
- Coronary Subclavian Steal Syndrome Evaluated with Multimodality Imaging
Related Links
- The "LAD", or left anterior descending artery (or anterior interventricular branch of the left coronary artery, or anterior descending branch) is an artery of the heart. Contents. 1 Course; 2 Supply; 3 Branches; 4 "The Widowmaker"; 5 Additional ...
- 5 days ago ... Location: The left anterior descending (LAD, interventricular) artery appears to be a direct continuation of the left coronary artery which descends into the anterior interventricular groove. Branches of this artery, anterior septal ...
★リンクテーブル★
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皮膚科
循環器
免疫学
[★]
- 英
- left anterior descending artery LAD, left anterior descending coronary artery, left anterior descending branch
- 関
- 心臓
[★]
- 関
- leave
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- 関
- anterioris、anteriorly、before、fore、former、pre、prior
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