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Results 501 - 550 of 1334
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Gasser Thomas C - - 2002
Clamp induced injuries of the arterial wall may determine the outcome of surgical procedures. Thus, it is important to investigate the underlying mechanical effects. We present a three-dimensional finite element model, which allows the study of the mechanical response of an artery-treated as a two-layer tube-during arterial clamping. The important ...
Dominguez Orlando J OJ - - 2002
The coroner's post-mortem examination revealed a tom aorta. This case illustrates that although a patient may appear stable, a major catastrophic event may nonetheless be taking place. How many times have we responded to MVAs similar to the one described here and seen those involved deny injuries? We carry a ...
Stamm Christof - - 2002
In children, even minor trauma to the chest can result in cardiac injury. We describe a case of a 13-year-old boy who received blunt chest trauma during a motorcycle accident. He was initially symptom-free but later complained of persistent chest pain and a murmur was noted. An anterior muscular ventricular ...
Lath Rahul - - 2002
Intracranial aneurysms are rare complications of head injury. The primary goals in the management of patients harbouring these lesions are early identification and intervention to prevent bleeding or rebleeding. The authors present a case of traumatic false aneurysm of the callosomarginal artery which was diagnosed following head injury and managed ...
Danenberg Haim D - - 2002
Emerging data indicate that the inflammatory response after mechanical arterial injury correlates with the severity of neointimal hyperplasia in animal models and postangioplasty restenosis in humans. The present study was designed to examine whether a nonspecific stimulation of the innate immune system, induced in close temporal proximity to the vascular ...
Yu Jeong-Sik - - 2002
The purpose of this study was to investigate the predisposing factors of bile duct injury after transcatheter arterial chemoembolization (TACE) for treatment of hepatic malignancy. For patients (n = 31) with TACE-related bile duct injuries during a 36-month period, final diagnoses of the tumor, the liver profile, presence of portal ...
Buell Joseph F - - 2002
HYPOTHESIS: Multiple centers have reported on bile duct injuries after cholecystectomy, but few have reported on the impact of concomitant vascular injuries. DESIGN: Twenty-seven life-threatening complex injuries (CIs) (Bismuth level III, IV, or V or combined arterial-ductal injuries) were retrospectively compared with 22 noncomplex injuries (NCs) (level I or II). ...
Borsa John J - - 2002
PURPOSE: To describe the precise anatomical location and extent of injury (based on angiography) in a series of patients with blunt thoracic aortic injury (BTAI) and evaluate the findings relative to the potential for endograft repair. METHODS: Thoracic aortograms from 50 trauma patients (37 men; mean age 37 years, range ...
Hossain M - - 2002
A case report. To present and discuss the case of a patient with serious head and spinal injuries who suffered delayed haemorrhage from a post-traumatic aneurysm of the right posterior inferior cerebellar artery following surgical treatment of vertebral fracture and hydrocephalus. National Spinal Injuries Unit and Institute of Neurological Sciences, ...
Kurita Tadayoshi - - 2002
OBJECTIVE: To determine whether lung injury influences the accuracy of lithium dilution cardiac output (CO) measurement. DESIGN: Animal experimental study. SETTING: Animal experimental laboratory. PARTICIPANTS: Swine (n = 23) weighing 26.4 +/- 2.47 kg (mean +/- SD). INTERVENTIONS: The animals were anesthetized and tracheotomized, then a pulmonary artery catheter was ...
Maweja S - - 2002
Vascular injuries secondary to isolated shoulder dislocation are rare. Unawareness for closed axillary artery trauma by many physicians treating shoulder dislocations, counts often for missed or delayed diagnosis. The authors describe two cases that presented with an anterior shoulder dislocation, complicated by a disruption of the axillary artery with subsequent ...
Schoder Maria - - 2002
Traumatic vessel injury can cause bleeding, thrombosis, embolization, or malperfusion due to external compression and spasm. Non-traumatic causes of acute large arterial emergencies include rupture of an aneurysm and pseudoaneurysm, dissection, embolization, and thrombosis in hypercoagulability syndromes. Ultrasonography is, of course, the imaging modality of choice in emergency cases; however, ...
DiPerna Costanzo A - - 2002
Currently a carotid duplex scan is the initial screening modality routinely used to evaluate occult extracranial carotid artery injuries secondary to blunt neck trauma. The objective of this study was to investigate the role of carotid artery duplex scanning in patients who suffered blunt trauma to the neck with a ...
Barratt Diana Marie - - 2002
BACKGROUND: Neurologists may be consulted to diagnose and treat the severe neurologic injuries that can occur in divers with decompression illness (DCI). REVIEW SUMMARY: Subclinical bubbles form during normal diving activity. DCI, a diffuse and multifocal process, results when bubbles cause symptoms by exerting mass effect in tissues, or obstructing ...
Thomas Janelle A - - 2002
Blunt carotid arterial injuries are uncommon. Motor vehicle crashes are the most frequent cause, but this type of vascular injury can be secondary to any direct blow to the neck, intraoral trauma, or strangulation. Types of vascular injuries include dissection, pseudoaneurysm, thrombosis, rupture, and arteriovenous fistula formation. Patients with pseudoaneurysm ...
Wong Arthur H - - 2002
Pathologic neointima formation requires directional smooth muscle cell (SMC) migration from media to intima. The very direction of SMC migration thus becomes a potential therapeutic target. Here, we hypothesize that proliferating SMC after injury can be redirected using engineered chemotactic gradients of elastin degradation to limit late pathologic neointima formation. ...
Wali Mahmoud A - - 2002
This is a case of a 12-year old boy who sustained gunshot injury to his left knee region. After initial debridement and closure of his wounds, the patient presented seven weeks later with a large pulsatile swelling of his lower thigh and painful flexion deformity of his knee. Angiography revealed ...
Kocer Naci - - 2002
The risk of fatal injury of the internal carotid artery (ICA) and surrounding anatomy during transsphenoidal surgery for pituitary adenoma is the most severe potential complication associated with this particular approach. We present a case in which iatrogenic injury to a patient's ICA and resultant carotid cavernous fistula and massive ...
Reuber M - - 2002
OBJECTIVE: To alert clinicians to the stroke risk associated with carotid artery injury secondary to attempted internal jugular venous (IJV) cannulation. METHODS: Case reports and review of the literature. RESULTS: Four patients developed a stroke following carotid artery (CA) injury during attempted IJV cannulation using the landmark technique. In all ...
Hanson Julian A - - 2002
We report a case of emergency endovascular stent-graft repair of a traumatic false aneurysm of the thoracic aorta. Thoracotomy was relatively contraindicated because the patient also sustained incomplete spinal injury, He recovered fully from both chest and spinal injuries, and remains without evidence of complications related to the stent-graft 18 ...
Bowley Douglas M G - - 2002
An awareness that time crucially affects outcome underpins the principles of management of vascular injury. Patients with hard signs of vascular injury should undergo urgent exploration. Soft signs mandate investigation, and arteriography is still the standard of care. Noninvasive vascular imaging may prove its worth in the future. All patients ...
Gauthier A - - 2002
Le Fort 1 maxillary osteotomy carries a risk of injury to the descending palatine arteries which vascularize the bulk of the mucosa of the bony palate. Some authors believe that injury to these arteries in the greater palatine canal is intrinsic to the procedure without any consequence for the trophicity ...
Conte Michael S - - 2002
OBJECTIVE: A functionally intact endothelial monolayer is thought to be critical for the adaptive process of vascular remodeling. This study was undertaken to examine the hypothesis that endothelial restoration is a critical determinant of remodeling after balloon angioplasty. METHODS: Rabbits (N=12) were fed a cholesterol-supplemented diet (0.5%) and were subjected ...
Narayan Pradeep - - 2002
Penetrating trauma to the chest leading to coronary artery injury is associated with a high mortality rate, especially in the case of injury to the left anterior descending (LAD) coronary artery. The mortality rate remains high whether they are managed with primary ligation or with coronary artery bypass grafting using ...
Nishiuchi Tatsuya - - 2002
Peripheral arterial injuries after blunt trauma commonly follow injuries to adjacent soft tissue, organ, and bone. We present here a case of blunt injury to the lumbar artery and the deep iliac circumflex artery in which there was no adjacent bone fracture, but in which hemorrhagic shock and persistent anemia ...
Muck Patrick E - - 2002
Blunt vascular trauma is rare as compared with penetrating vascular trauma. The incidence of iliac artery injury has been reported as low as 0.4 per cent of total arterial trauma. Iliac artery injury in blunt trauma is rare because of its anatomic location and protection by the pelvis. This article ...
Yao Dorcas C - - 2002
OBJECTIVE: We evaluated the incidence and organ distribution of arterial extravasation identified using contrast-enhanced helical CT in patients who had sustained abdominal visceral injuries and pelvic fractures after blunt trauma. SUBJECTS AND METHODS: Five hundred sixty-five consecutive patients from four level I trauma centers who had CT scans showing abdominal ...
Agaja S B - - 2002
A sixty year old Yoruba farmer presented at Ela Memorial Medical Centre, Ilorin with recurrent spontaneous bleeding from traumatic left radial artery aneurysm. This was due to a clash between a Fulani Cattle rearer and the Yoruba farmer. This sort of situation is rampant across Nigeria. It has led to ...
Endara S A - - 2001
We treated a 26-year-old male who sustained a self-inflicted injury to the mediastinum with a crossbow bolt. Injuries involved penetration of the sternum 1 cm below the sternomanubrial joint, right lung, pericardium, ascending aorta, right pulmonary artery, esophagus, and azygos vein. He was treated successfully with cardiopulmonary bypass and hypothermia. ...
Hyde J A - - 2001
Trauma to the subclavian artery and its branches is rare, and usually the result of penetrating injuries. Blunt trauma presents its own peculiar management difficulties, particularly when causing haemorrhage into the thoracic cavity. Cardiothoracic surgeons may be asked to deal with such cases, so an understanding of the anatomy and ...
Roberts L H - - 2001
Vertebral artery injuries are identified more frequently now than in the past for both penetrating and blunt trauma. This is as a result of increased suspicion and awareness, liberal use of color flow Doppler, CT angiography, and traditional four-vessel angiography. The vast majority of patients who are not exsanguinating at ...
Chen M Y - - 2001
PURPOSE: The occurrence of aortic arch branch vessel injury as an isolated occurrence or in association with aortic injury after blunt chest trauma has not been emphasized in the literature. The imaging evaluation is also controversial. METHODS: We reviewed thoracic aortograms of 166 patients examined at our institution from May ...
Horowitz M - - 2001
OBJECTIVE AND IMPORTANCE: Third ventriculostomy for the management of noncommunicating hydrocephalus is a commonly performed procedure with a 5% complication rate. One of the known complications is basilar artery injury. CLINICAL PRESENTATION: We report a case of basilar artery injury, intraventricular hemorrhage, and false aneurysm formation in a 30-month-old boy ...
Schmidli J - - 2001
Mediastinoscopy is a widely used method to achieve pathologic diagnosis of enlarged lymph nodes or undefined mediastinal solid mass. Aortic arch penetration and injury of the supraaortic arteries are rare but very dangerous complications of mediastinoscopy. We describe the hazardous transportation of a 57-year-old woman after mediastinoscopic injury of the ...
Hoyt D B - - 2001
The exposure of vascular injuries is contingent on knowledge of anatomy and the limitations and boundaries for proximal and distal control of each artery. In this article, these are conveniently organized into arteries of the neck, of the chest, of the abdomen, and of the extremities. In addition, the interface ...
Shiomi J - - 2001
We determined which angle of flexion best prevents popliteal artery injury during knee surgery. We took MRIs of the knee in the lateral position with the knee in 0 degrees, 45 degrees, 90 degrees, and 120 degrees of flexion in 15 volunteers. The shortest distance between the posterior cortex of ...
Tulis D A - - 2001
BACKGROUND: Recent studies have demonstrated that systemic pharmacological induction of heme oxygenase-1 (HO-1), the inducible isoform of the initial and rate-limiting enzyme for heme catabolism, attenuates neointima formation after experimental vascular injury. We have now investigated the ability of localized adenovirus-mediated HO-1 (Ad-HO-1) gene delivery to modify arterial remodeling after ...
Jones N F - - 2001
Injuries to the common digital or proper digital arteries during surgery for Dupuytren's contracture are relatively rare but may be underreported. Delay in recognition and inadequate management may result in prolonged ischemia or gangrene and eventually necessitate finger amputation. A patient who sustained inadvertent injury to several digital arteries during ...
Windfuhr J P - - 2001
Aneurysms of the extracranial arteries are in most cases secondary to atherosclerosis but may also be due to degeneration, congenital abnormalities, trauma or unclear etiology. They present either with bulging in the lateral pharyngeal wall or the neck. Therefore, otolaryngologists are often among the first physicians to see the patient. ...
Answini G A - - 2001
Classic teaching suggests that blunt thoracic aortic rupture (BTAR) results from high-speed deceleration injury mechanisms. Our recent experience with a patient who sustained fatal aortic rupture resulting from a low-speed crushing injury emphasizes the importance of maintaining a high index of suspicion for BTAR, even in patients with "low-risk" injury ...
Berg E E - - 2001
Elbow dislocations are most often the result of a hyperextension mechanism with the forearm levered and displaced posterior to the humerus. Recurrent instability and arterial disruption are uncommon sequelae of this injury. Any asymmetry in distal pulses after joint reduction demands a study of arterial anatomy (arteriogram or duplex scan) ...
Rosenthal E A - - 2001
Background- Vascular smooth muscle cell (VSMC) proliferation is a critical factor in the neointima formation that causes restenosis after coronary angioplasty (PTCA). Desferri-exochelin 772SM (D-EXO), a highly diffusible, lipophilic iron chelator secreted by Mycobacterium tuberculosis, inhibits proliferation of VSMCs in culture. We hypothesized that treatment with D-EXO would inhibit neointima ...
DeYoung M B - - 2001
BACKGROUND: Elevated plasma levels of plasminogen activator inhibitor type 1 (PAI-1) are associated with myocardial infarction, atherosclerosis, and restenosis. PAI-1 is increased in atherosclerotic arteries and failed vein grafts. No experimental data, however, support a causal relationship between elevated PAI-1 expression and vascular lesions. Paradoxically, data generated in PAI-1 knockout ...
Waugh J M - - 2001
PURPOSE: Alpha-1-antitrypsin (AAT) is the major circulating elastase inhibitor. Deficiency of elastase inhibition leads to emphysema and vascular abnormalities including accelerated neointima. Because recent evidence suggests that tissue AAT levels determine inhibitory function, the authors hypothesize that local tissue-based expression of AAT limits elastase activity sufficiently to guide arterial response ...
Parbhoo A H - - 2001
Forty-seven patients with cervical spine trauma were evaluated prospectively with magnetic resonance imaging (MRI) and angiography (MRA) to determine the incidence of vertebral artery injury. Twelve patients (25%) had vertebral artery injuries (one bilateral), and occlusion was identified in nine patients and dissection in four. The vertebral artery injury did ...
Ansari M Z - - 2001
Cardiac injury following blunt chest trauma is known to occur, but traumatic rupture of ventricular septum is a rare injury, especially following blunt chest trauma. A case of a 20-year-old male is presented who fell on his back from a 9th-floor window and was resuscitated for 3 hours to no ...
Taggart D P - - 2001
Cerebral injury is a major cause of mortality and morbidity of coronary artery bypass grafting. Stroke occurs in 3% of patients and is largely caused by embolization of atheromatous debris during manipulation of the diseased aorta. Cognitive impairment, which is predominantly caused by microembolization of gaseous and particulate matter, mainly ...
O'Kane J W - - 2001
A college football player sustained a contusion to his anterior neck, over the carotid artery. Less than a minute later he fainted, then experienced episodes of postural dizziness with bradycardia and hypotension. He completely recovered within 3 hours from the time of injury. An unusual but possible cause of this ...
Wang K - - 2001
OBJECTIVES: The role of P-selectin in the process of restenosis was evaluated using a recombinant immunoglobulin (Ig) chimera form of its ligand, soluble P-selectin glycoprotein ligand-Ig (rPSGL-Ig), as a competitive inhibitor for the natural ligand on leukocytes. BACKGROUND: Inflammation and coagulation activation after vascular injury may be an important factor ...
Miller P R - - 2001
BACKGROUND: Blunt cerebrovascular injuries (BCVIs), once thought to be rare, have been recognized with increasing frequency in recent years. An incidence of 0.33% for carotid artery injury (CAI) was noted from our institution, with 24% stroke-related mortality. Vertebral artery injury (VAI) has been thought both rare and of questionable significance. ...
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