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1.
Eur J Vasc Endovasc Surg ; 54(4): 415-422, 2017 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-28844552

RESUMEN

OBJECTIVE/BACKGROUND: The objective was to observe for 1 year all patients in Norway operated on for symptomatic carotid stenosis with respect to (i) the time from the index event to surgery and neurological events during this time; (ii) the level in the healthcare system causing delay of surgical treatment; and (iii) the possible relationship between peri-operative use of platelet inhibitors and neurological events while awaiting surgery. METHODS: This was a prospective national multicentre study of a consecutive series of symptomatic patients. Patients were eligible for inclusion when referred for surgery. An index event was defined as the neurological event prompting contact with the healthcare system. All 15 departments in Norway performing carotid endarterectomy (CEA) participated. RESULTS: Three hundred and seventy one patients were eligible for inclusion between 1 April 2014 and 31 March 2015, and 368 patients (99.2%) were included. Fifty-four percent of the patients contacted their general practitioner on the day of the index event. Primary healthcare referred 84.2% of the patients to hospital on the same day as examined. In hospital median time from admission to referral for vascular surgery was 3 days. Median time between referral to the operating unit and actual CEA was 5 days. Overall, 61.7% of the patients were operated on within 2 weeks of the index event. Twelve patients (3.3%) suffered a new neurological event while awaiting surgery. The percentage of patients on dual antiplatelet therapy was lower (25.0%) in this group than among the other patients (62.6%) (p = .008). The combined 30 day mortality and stroke rate was 3.8%. CONCLUSION: This national study with almost complete inclusion and follow-up shows that the delays occur mainly at patient level and in hospital. The delay is associated with new neurological events. Dual antiplatelet therapy is associated with reduced risk of having a new neurological event before surgery.


Asunto(s)
Estenosis Carotídea , Endarterectomía Carotidea/métodos , Ataque Isquémico Transitorio , Inhibidores de Agregación Plaquetaria/uso terapéutico , Accidente Cerebrovascular , Tiempo de Tratamiento , Anciano , Estenosis Carotídea/complicaciones , Estenosis Carotídea/diagnóstico , Estenosis Carotídea/epidemiología , Estenosis Carotídea/fisiopatología , Endarterectomía Carotidea/estadística & datos numéricos , Humanos , Ataque Isquémico Transitorio/epidemiología , Ataque Isquémico Transitorio/etiología , Ataque Isquémico Transitorio/prevención & control , Masculino , Persona de Mediana Edad , Evaluación de Necesidades , Noruega/epidemiología , Estudios Prospectivos , Medición de Riesgo/métodos , Índice de Severidad de la Enfermedad , Accidente Cerebrovascular/epidemiología , Accidente Cerebrovascular/etiología , Accidente Cerebrovascular/prevención & control , Evaluación de Síntomas/estadística & datos numéricos , Tiempo de Tratamiento/normas , Tiempo de Tratamiento/estadística & datos numéricos
2.
Scand J Immunol ; 79(5): 338-45, 2014 May.
Artículo en Inglés | MEDLINE | ID: mdl-24612355

RESUMEN

Chronic periodontitis (CP) and atherosclerotic and aortic aneurysmal vascular diseases (VD) are inflammatory conditions that share a number of predisposing factors. They have a complex genetic heritability and may share genetic risk factors, but a well-defined relationship is still not determined. In addition, distinct genetic patterns of predisposition have been associated with these diseases. Here, we investigated the association of polymorphisms in the IL-1 gene locus with CP in a case-case study analysing VD patients with or without CP. Seventy-four patients with VD of whom 36 had CP were genotyped for single nucleotide polymorphisms in the IL1A -889 (rs1800587), IL1B +3954 (rs1143634) and IL1B at -511 (rs16944) genes and for VNTR polymorphisms in the IL1RN gene. A significantly higher frequency (17%) for allele 1 (four repeats) of the IL1RN VNTR gene was found among the VD patients with CP compared to those without CP. In addition, the frequency of the IL1RN VNTR genotypes 1/1 (4/4 repeats) and 2/2 (2/2 repeats) were significantly higher and lower, respectively, in VD patients with CP. These findings suggest an association of genetic polymorphisms in the IL1-gene locus with risk for CP in patients with VD. The carriage of the risk genotypes, the development and the subsequent influence of CP on systemic health may constitute an additional burden in the pathogenesis of VD. This emphasizes the importance of effective periodontal treatment in patients with VD.


Asunto(s)
Aneurisma de la Aorta/epidemiología , Aterosclerosis/epidemiología , Periodontitis Crónica/epidemiología , Predisposición Genética a la Enfermedad , Proteína Antagonista del Receptor de Interleucina 1/genética , Interleucina-1/genética , Anciano , Anciano de 80 o más Años , Aneurisma de la Aorta/genética , Aterosclerosis/genética , Periodontitis Crónica/genética , Análisis Mutacional de ADN , Femenino , Frecuencia de los Genes , Estudios de Asociación Genética , Genotipo , Humanos , Masculino , Persona de Mediana Edad , Polimorfismo de Nucleótido Simple , Países Escandinavos y Nórdicos
3.
Br J Surg ; 98(11): 1546-55, 2011 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-21725968

RESUMEN

BACKGROUND: The aim of this study was to determine the cost-effectiveness of ultrasound screening for abdominal aortic aneurysm (AAA) in men aged 65 years, for both the Netherlands and Norway. METHODS: A Markov model was developed to simulate life expectancy, quality-adjusted life-years, net health benefits, lifetime costs and incremental cost-effectiveness ratios for both screening and no screening for AAA. The best available evidence was retrieved from the literature and combined with primary data from the two countries separately, and analysed from a national perspective. A threshold willingness-to-pay (WTP) of €20,000 and €62,500 was used for data from the Netherlands and Norway respectively. RESULTS: The additional costs of the screening strategy compared with no screening were €421 (95 per cent confidence interval 33 to 806) per person in the Netherlands, and the additional life-years were 0·097 (-0·180 to 0·365), representing €4340 per life-year. For Norway, the values were €562 (59 to 1078), 0·057 (-0·135 to 0·253) life-years and €9860 per life-year respectively. In Norway the results were sensitive to a decrease in the prevalence of AAA in 65-year-old men to 1 per cent, or lower. Probabilistic sensitivity analyses indicated that AAA screening has a 70 per cent probability of being cost-effective in the Netherlands with a WTP threshold of €20,000, and 70 per cent in Norway with a threshold of €62,500. CONCLUSION: Using this model, screening for AAA in 65-year-old men would be highly cost-effective in both the Netherlands and Norway.


Asunto(s)
Aneurisma de la Aorta Abdominal/prevención & control , Rotura de la Aorta/prevención & control , Tamizaje Masivo/economía , Anciano , Aneurisma de la Aorta Abdominal/economía , Rotura de la Aorta/economía , Análisis Costo-Beneficio , Costos de la Atención en Salud , Humanos , Masculino , Cadenas de Markov , Países Bajos , Noruega , Años de Vida Ajustados por Calidad de Vida
4.
Eur J Vasc Endovasc Surg ; 40(2): 234-40, 2010 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-20570187

RESUMEN

OBJECTIVES: The aim of this study was to determine the mid-term patency and the clinical outcome after stenting of chronic occluded caval and iliofemoral venous segments. DESIGN: Observational study. MATERIAL/METHODS: During the period 2000 and 2009, 2400 patients with chronic venous insufficiency (CVI) were evaluated, and 34 with chronic venous occlusions after deep venous thrombosis (DVT) were selected for endovascular treatment. The median age was 41 (range 15-63) years, and 19 were female. The following investigations were undertaken: colour duplex ultrasound (CDU), ascending venography (AV), venous occlusion plethysmography (VOP), venous pressure gradient (VPG) and CT venography or trans-femoral/popliteal venography. The major symptoms were venous claudication, oedema, pain and ulcer. All patients were treated by stenting occluded segments. Self-expanding stents were deployed in 22 iliofemoral, nine iliac and one caval-iliac-femoral. Twenty-one procedures required stenting across the inguinal ligament. RESULTS: Primary recanalisation was accomplished in 32/34 (94%). The median follow-up was 33 months (1-96) with clinical examination, CDU and VOP. Two-year primary patency was 14/21 (67%), primary-assisted patency 16/21(76%), and secondary patency was 19/21 (90%). Venous claudication and oedema resolved in those successfully recanalised. Four of the seven ulcers healed. CONCLUSION: Stenting to treat venous claudication, oedema and recurrent venous ulcer caused by post-thrombotic chronic venous occlusions has positive clinical outcome and good mid-term patency.


Asunto(s)
Stents , Insuficiencia Venosa/terapia , Trombosis de la Vena/complicaciones , Adolescente , Adulto , Enfermedad Crónica , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pletismografía , Resultado del Tratamiento , Ultrasonografía Doppler en Color , Ultrasonografía Doppler Dúplex , Grado de Desobstrucción Vascular , Insuficiencia Venosa/etiología , Adulto Joven
5.
Eur J Vasc Endovasc Surg ; 36(4): 466-72, 2008 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-18675560

RESUMEN

OBJECTIVES: To evaluate the durability of venous valve reconstruction (VVR) and its benefits in terms of symptom improvement, ulcer healing and symptom/ulcer recurrence among patients with secondary chronic venous insufficiency (SCVI) in whom superficial venous surgery and compression treatment had failed. METHODS: During a ten year period (1993-2004) 1800 patients with chronic venous insufficiency (CVI) were evaluated by colour duplex ultrasound (CDU) and ambulatory venous pressure measurement (AVP). Approximately two thirds of patients had SCVI. Initial treatment consisted of compression therapy for a 6 month period. In addition, superficial vein and perforator surgery was performed in those presenting with reflux in these venous systems. 121 patients who did not improve with this treatment were investigated by ascending venography, descending video venography, air plethysmography and measurement of post-ischaemic venous pressure gradient. Thirty two cases having venous reflux without obstruction were selected for VVR. RESULTS: The ulcer healing rate within three months was 68% (13/19 patients). VVR resulted in valvular competence and a clinical success rate of 47% and 40% after 3 and 7 years respectively. In 8/13 (54%) of patients with a healed leg ulcer, a median post-operative AVP reduction of 33 mm Hg (range 20-38) was recorded. The durability of clinical success was numerically longer in patients with haemodynamic improvement (n=10) median 24 months (12-108), when compared with that in those without haemodynamic improvement (n=22) median 18 months (6-108). Popliteal vein reconstruction was part of the VVR procedure in all patients with haemodynamic improvement (post-op. AVP reduction >or=20 mm Hg). VVR at the popliteal level alone or combined with inguinal reconstruction seemed to be the one significant factor associated with haemodynamic improvement (P=0.014, Chi squared). CONCLUSION: VVR may lead to ulcer healing, but when performed at the popliteal level, haemodynamic improvement can be obtained along with a longer recurrence-free period (durability). VVR should be considered in the treatment of patients with SCVI who do not respond to superficial venous surgery and compression treatment.


Asunto(s)
Pierna/irrigación sanguínea , Venas/cirugía , Insuficiencia Venosa/cirugía , Adulto , Anciano , Angioscopía , Anticoagulantes/uso terapéutico , Enfermedad Crónica , Femenino , Humanos , Masculino , Persona de Mediana Edad , Ultrasonografía Doppler Dúplex , Úlcera Varicosa/patología , Venas/diagnóstico por imagen , Venas/trasplante , Insuficiencia Venosa/diagnóstico por imagen , Insuficiencia Venosa/fisiopatología , Presión Venosa , Cicatrización de Heridas
6.
Scand J Surg ; 97(1): 56-62, 2008.
Artículo en Inglés | MEDLINE | ID: mdl-18450207

RESUMEN

BACKGROUND AND AIMS: Treatment with autologous, bone marrow mononuclear stem cells has shown effects in patients with chronic limb ischaemia in one randomized clinical study. The aim of the study was to test the potential effect of stem cell treatment in a strict defined group of patients with stable critical limb ischaemia (CLI). DESIGN: A prospective, combined-centre pilot study. MATERIAL: Eight patients with CLI of the lower extremities, and without any other treatment options. METHODS: Bone marrow cells were harvested from the patient's iliac crest and, after separation, injected into the calf muscles of the affected leg. Outcome was evaluated by digital subtraction angiography (DSA), visual analogue scale (VAS) and several non-invasive circulatory physiological tests. RESULTS: There were no complications from the procedures. Two patients were amputated two months after cell injection. Five patients reported pain relief after four months. Five patients could be evaluated at eight months. According to VAS and physiological tests, they were all either stable or showed improvement. CONCLUSION: This method seems to be a safe option for treating patients with CLI. Inclusion of patients took a long time, mainly because many patients with CLI are offered endovascular treatment in our institution. While symptomatic improvement was found in individual patients, larger trials are required to investigate efficacy. This will probably require multi-centre participation.


Asunto(s)
Trasplante de Médula Ósea , Isquemia/terapia , Pierna/irrigación sanguínea , Adulto , Anciano , Anciano de 80 o más Años , Angiografía , Femenino , Humanos , Masculino , Persona de Mediana Edad , Dimensión del Dolor , Proyectos Piloto , Estudios Prospectivos , Trasplante Autólogo , Resultado del Tratamiento
7.
Ugeskr Laeger ; 162(12): 1742-4, 2000 Mar 20.
Artículo en Danés | MEDLINE | ID: mdl-10766656

RESUMEN

Medical termination of early pregnancy with mifepristone (RU 486) followed by a prostaglandin analogue (Cervagem) is a fairly new abortion method in surgical and gynaecological departments in Denmark. Sixty-two patients were evaluated during the period December 1, 1997 to the June 10, 1998 at Kalundborg hospital. The success rate was 97%. Side effects were rare. The study illustrates the need for strong analgesics in half of the patients. In conclusion RU 486 followed by a prostaglandin analogue provides an efficient and attractive alternative to surgical abortion methods.


Asunto(s)
Abortivos no Esteroideos/administración & dosificación , Abortivos Esteroideos/administración & dosificación , Aborto Inducido/métodos , Alprostadil/análogos & derivados , Mifepristona/administración & dosificación , Prostaglandinas E Sintéticas/administración & dosificación , Abortivos no Esteroideos/efectos adversos , Abortivos Esteroideos/efectos adversos , Administración Intravaginal , Adolescente , Adulto , Alprostadil/administración & dosificación , Alprostadil/efectos adversos , Dinamarca , Femenino , Humanos , Mifepristona/efectos adversos , Embarazo , Prostaglandinas E Sintéticas/efectos adversos , Estudios Retrospectivos
8.
Angiology ; 62(4): 301-5, 2011 May.
Artículo en Inglés | MEDLINE | ID: mdl-21474466

RESUMEN

Elevated plasma levels of vascular inflammatory markers have been reported in patients with peripheral arterial disease (PAD). We assessed the effect of supervised exercise training (ET) on vascular inflammation, hypothesizing that ET reduces plasma levels of the endothelial adhesion molecules E-selectin, intercellular adhesion molecule-1 (ICAM-1), and vascular cell adhesion molecule-I (VCAM-I). Twenty-nine patients with PAD underwent a supervised ET program for 8 weeks. Before and after ET, walking distances (pain-free, PWD; maximal, MWD) were determined by a standard treadmill test. Plasma levels of E-selectin and ICAM-I were significantly reduced (E-selectin: 45.5-40.4 ng/mL, P = .013); ICAM-I: 342.0-298.0 ng/mL, P = .016). VCAM-1 levels were unchanged. Walking distances increased significantly (PWD: median 77-150 m, P < .001; MWD: median 306-535 m, P < .001). In conclusion, 8 weeks of ET in patients with PAD reduces plasma levels of the specific endothelium-derived inflammatory markers E-selectin and ICAM-I.


Asunto(s)
Selectina E/sangre , Terapia por Ejercicio , Molécula 1 de Adhesión Intercelular/sangre , Enfermedades Vasculares Periféricas/sangre , Enfermedades Vasculares Periféricas/terapia , Anciano , Prueba de Esfuerzo , Femenino , Humanos , Masculino , Persona de Mediana Edad , Enfermedades Vasculares Periféricas/fisiopatología , Estadísticas no Paramétricas , Caminata/fisiología
9.
Injury ; 41(6): 599-605, 2010 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-19945102

RESUMEN

OBJECTIVE: This study aims to evaluate the costs and health outcome for surgical and conservative treatment of displaced proximal humeral fractures. DESIGN: This study is a randomised controlled trial. PARTICIPANTS: This study included 50 patients aged 60 or older admitted to hospital with a severely displaced three- or four-part fracture. INTERVENTIONS: The patients were treated surgically with an angular stable interlocking implant (25 patients) or conservative treatment (25 patients). MAIN OUTCOME MEASURE: The outcomes measured included quality-adjusted life years (QALYs) and societal costs. RESULTS: At 12 months' follow-up, the mean difference in the number of QALYs was 0.027 (95% confidence interval (CI)=-0.025, 0.078) while the mean difference in total health-care costs was 597 euro in favour of surgery (95% CI=-5291, 3777). CONCLUSION: There was no significant difference in QALYs or costs between surgical and conservative treatment of severe displaced proximal humeral fractures.


Asunto(s)
Fijación de Fractura/métodos , Costos de la Atención en Salud , Modelos Estadísticos , Evaluación de Resultado en la Atención de Salud , Fracturas del Hombro/terapia , Anciano , Anciano de 80 o más Años , Costo de Enfermedad , Femenino , Fijación de Fractura/economía , Humanos , Tiempo de Internación , Masculino , Persona de Mediana Edad , Años de Vida Ajustados por Calidad de Vida , Fracturas del Hombro/economía , Fracturas del Hombro/cirugía , Factores de Tiempo
10.
11.
Eur J Vasc Endovasc Surg ; 33(1): 20-5, 2007 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-16934498

RESUMEN

OBJECTIVES: The purpose of this study was to compare the circulatory responses to walking in patients with peripheral atherosclerotic disease (PAD) and healthy controls. METHODS: The participants were eleven patients with diagnosed PAD, and a control group of six healthy age-matched adults. Blood pressure, heart rate (HR), and acral skin perfusion were recorded continuously before, during and after a walking exercise on a treadmill. RESULTS: The patients walked to maximum claudication distance (MCD) on a treadmill, median walking distance 103 (34-223) metres [median (range)], at 3.3 (1.0-4.5) km/h. There was a steep increase in HR and mean arterial pressure (MAP) while the patients were walking. At claudication the median rise in MAP was 46.6 (10.3-61.3) mmHg, systolic blood pressure (SP) increased by 84.9 (31.4-124.9) mmHg, and diastolic blood pressure (DP) by 21.7 (-2.1-31.7) mmHg. HR increased by 34.9 (12.9-48.1) beats/min. The control group walked for 5 minutes at 3.2 (3.0-3.3) km/h. In the control group the blood pressure initially increased moderately but stabilised thereafter. Median rise in MAP during walking was 8.5 (5.6-14.6) mmHg, SP increased by 30.9 (6.6-41.5) mmHg, and DP was reduced by -1.4 (-5.4-1.5) mmHg. HR increased by 27.1 (18.8-34.9) beats/min. We found no significant differences in acral skin perfusion during walking exercise between the patients and control group. CONCLUSIONS: In patients with PAD, blood pressure increased continuously and significantly when walking to MCD (dynamic exercise). The level of increase in blood pressure was similar to that caused in response to isometric exercise.


Asunto(s)
Aterosclerosis/fisiopatología , Presión Sanguínea , Claudicación Intermitente/fisiopatología , Pierna/irrigación sanguínea , Enfermedades Vasculares Periféricas/fisiopatología , Caminata , Anciano , Anciano de 80 o más Años , Aterosclerosis/complicaciones , Estudios de Casos y Controles , Femenino , Frecuencia Cardíaca , Humanos , Claudicación Intermitente/etiología , Masculino , Persona de Mediana Edad , Enfermedades Vasculares Periféricas/complicaciones , Flujo Sanguíneo Regional , Piel/irrigación sanguínea , Factores de Tiempo
12.
Eur J Vasc Endovasc Surg ; 33(1): 3-12, 2007 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-17055756

RESUMEN

OBJECTIVES: To compare the effect of optimal medical treatment only (OMT) with OMT combined with percutaneous transluminal angioplasty (OMT+PTA) in patients with intermittent claudication (IC). DESIGN: A single centre prospective, randomised study. Quality of life (QoL) was the primary outcome measure. Secondary measures were ankle-brachial-index (ABI), treadmill walking distances and mortality. METHODS: From a total of 434 patients considered for inclusion into the trial, only 56 patients with disabling IC fulfilled the inclusion criteria. The patients were randomised into treatment groups consisting of 28 patients each and followed for 2 years. ABI and treadmill walking distances were measured in addition to the visual analogue scale (VAS) for pain evaluation, and QoL assessment using the Short Form (SF-36 and Claudication Scale (CLAU-S). RESULTS: The demographic data in the 2 groups were almost identical. After 2 years of follow-up the ABI, the treadmill walking distances and the VAS were significant improved in the group treated with OMT+PTA, compared to the group treated with OMT only (p<0.01 for all). Furthermore, some variables from the QoL assessment also showed a significant improvement in favour of the OMT+PTA group (p<0.05 for all). CONCLUSION: The advantage of conducting a single centre study and adhering to very strict inclusion criteria was illustrated by the homogenous demographic data of the two groups. This partly outweighed the disadvantage of having included a relatively small number of patients. Early intervention with PTA in addition to OMT seems to have a generally more positive effect compared to OMT only, on haemodynamic, functional as well as QoL aspects during the first 2 years in patients with IC.


Asunto(s)
Angioplastia de Balón , Claudicación Intermitente/terapia , Pierna/irrigación sanguínea , Enfermedades Vasculares Periféricas/terapia , Calidad de Vida , Anciano , Tobillo/irrigación sanguínea , Presión Sanguínea , Arteria Braquial/fisiopatología , Femenino , Estudios de Seguimiento , Humanos , Claudicación Intermitente/etiología , Claudicación Intermitente/mortalidad , Claudicación Intermitente/fisiopatología , Masculino , Persona de Mediana Edad , Dolor/etiología , Manejo del Dolor , Dimensión del Dolor , Cooperación del Paciente , Selección de Paciente , Enfermedades Vasculares Periféricas/complicaciones , Enfermedades Vasculares Periféricas/mortalidad , Enfermedades Vasculares Periféricas/fisiopatología , Estudios Prospectivos , Encuestas y Cuestionarios , Factores de Tiempo , Resultado del Tratamiento , Caminata
13.
Eur J Vasc Endovasc Surg ; 32(5): 570-6, 2006 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-16919978

RESUMEN

OBJECTIVES: To evaluate the patency of EVVP and its effect in symptom relief, ulcer healing and ulcer-free period in patients with PCVI. METHODS: Between 1993 and 2004, 1800 patients with CVI were evaluated and seventeen with PCVI were selected for EVVP. They were all investigated with ambulatory venous pressure measurement (AVP), colour duplex ultrasound (CDU), ascending venography and descending video venography. The CEAP classification was used to group the patients. Six patients were C4, four C5 and seven C6. All had deep reflux and high levels of AVP. RESULTS: All procedures were technically successful. The ulcer healing rate was 4/7 (57%) within 3 months. All C4 patients experienced symptom improvement postoperatively and had a median recurrence free period of 72 (range 60-122) months. The C5 group had an median ulcer free period of 61 months (12-72) and the C6 of median 48 (12-72) months. Single valve plasties (4) reached a median competence period of 48 months (12-72), 12 multiple valve plasties at the same level show a median 78 months (63-122) and 10 multilevel repairs median 54 months (12-96). Multiple valve plasties at the same level (multi-station plasties) performed on the C4 group seemed to yield the longest durability with a median of 103 months (84-122). CONCLUSION: EVVP with an ulcer healing rate of 57% and satisfactory symptom improvement seems to be an alternative of surgical treatment for selected patients with PCVI. The durability of this technique seems to be related to clinical severity and the multiplicity of repairs.


Asunto(s)
Úlcera Varicosa/cirugía , Procedimientos Quirúrgicos Vasculares , Insuficiencia Venosa/cirugía , Adulto , Anciano , Enfermedad Crónica , Estudios de Evaluación como Asunto , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Selección de Paciente , Flebografía , Índice de Severidad de la Enfermedad , Resultado del Tratamiento , Ultrasonografía Doppler en Color , Úlcera Varicosa/etiología , Úlcera Varicosa/fisiopatología , Grado de Desobstrucción Vascular , Insuficiencia Venosa/complicaciones , Insuficiencia Venosa/fisiopatología , Presión Venosa
14.
Eur J Vasc Endovasc Surg ; 31(1): 53-8, 2006 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-16269254

RESUMEN

OBJECTIVES: To evaluate the sensitivity, specificity, positive and negative predictive value of contrast-enhanced (gadolinium) magnetic resonance imaging (CE-MRA) and colour duplex ultrasound (CDU) of lower limb arteries. DESIGN: Prospective, single centre study. MATERIAL AND METHODS: A consecutive series of 58 patients with intermittent claudication (IC) were examined with CE-MRA and CDU from the infrarenal aorta to the tibio-peroneal trunk with digital subtraction angiography (DSA) as reference. The arterial tree was divided into 15 segments, pooled into three regions; suprainguinal, thigh and knee. Sensitivity, specificity, positive and negative predictive values for significant obstructions were calculated. Cohen Kappa statistics was used to establish agreement between the three methods. RESULTS: The sensitivity (specificity in parentheses) for significant obstructions in the suprainguinal region were 96% (94%) for CE-MRA and 91% (96%) for CDU, in the thigh region 92% (95%) for CE-MRA and 76% (99%) for CDU, and in the knee region 93% (96%) for CE-MRA and 33% (98%) for CDU. CDU failed to visualize 10% of suprainguinal, 2% of thigh and 13% of knee-region arterial segments. CONCLUSIONS: Both CE-MRA and CDU are good alternatives to DSA in the suprainguinal- and thigh-region. In the knee region only CE-MRA can be relied upon as an alternative to DSA. Imaging by CDU is not suited to situations were evaluation of runoff vessels is important.


Asunto(s)
Angiografía de Substracción Digital/métodos , Aorta Abdominal , Gadolinio DTPA , Claudicación Intermitente/diagnóstico , Angiografía por Resonancia Magnética/métodos , Arterias Tibiales , Ultrasonografía Doppler en Color/métodos , Anciano , Anciano de 80 o más Años , Aorta Abdominal/diagnóstico por imagen , Aorta Abdominal/patología , Medios de Contraste/administración & dosificación , Femenino , Estudios de Seguimiento , Gadolinio DTPA/administración & dosificación , Humanos , Infusiones Intravenosas , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Estudios Prospectivos , Arterias Tibiales/diagnóstico por imagen , Arterias Tibiales/patología
15.
Tidsskr Nor Laegeforen ; 112(13): 1697-9, 1992 May 20.
Artículo en Noruego | MEDLINE | ID: mdl-1509426

RESUMEN

15 patients who had elective aortic reconstruction for infra-renal aortic aneurysm (nine patients) or aortoiliac occlusive disease (six patients) were evaluated using postoperative computerized tomography. The assessment was performed 1-2 weeks, 6-8 weeks and 6-8 months after implantation of woven Dacron graft. All patients were without clinical or laboratory signs of infection. The presence or absence of retroperitoneal air or fluid collections was assessed. In patients operated on for aneurysms, perigraft fluid was present in two cases 6-8 weeks after operation, but had disappeared within 6-8 months. Even after only 1-2 weeks, no accumulation of periprosthetic fluid was found in patients operated on for occlusive disease. Retroperitoneal air was not seen in any of the cases. It is concluded that perigraft fluid may be a "normal" phenomenon during the early postoperative period in patients operated on for abdominal aortic aneurysm.


Asunto(s)
Aorta Abdominal/cirugía , Aneurisma de la Aorta/cirugía , Prótesis Vascular , Exudados y Transudados , Complicaciones Posoperatorias/diagnóstico por imagen , Anciano , Aorta Abdominal/diagnóstico por imagen , Arteriosclerosis/cirugía , Prótesis Vascular/efectos adversos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Tomografía Computarizada por Rayos X
16.
Acta Chir Scand ; 152: 503-7, 1986.
Artículo en Inglés | MEDLINE | ID: mdl-2947413

RESUMEN

The flow velocity pattern in the common femoral artery was analyzed in 107 limbs with femoropopliteal atherosclerotic obstruction and a normal aortoiliac segment. A pulsed wave Doppler ultrasound flowmeter was used. The highest (Va), the lowest (Vb) and the time average of the mean (V mean) velocities were obtained, and the pulsatility index (PI = Va-Vb/V mean) was calculated. In limbs with occluded (PI = 6.2) or greater than 50% stenotic (PI = 5.8) femoropopliteal segment, the flow velocity curve was slightly damped, with PI lower than in a control group (PI = 8.2). Neither stenosis of the profunda femoris artery nor the number of occluded leg arteries influenced the hemodynamic values in limbs with occluded femoropopliteal segment. Dampening of the femoral arterial flow velocity curve and reduced PI may indicate a stenotic (greater than 50%) or an occluded femoropopliteal segment. This flow pattern is also seen in aortoiliac atherosclerosis. In 76 limbs studied after femoropopliteal bypass, PI normalized when the bypass was patent, but was unchanged when the graft was occluded. Analysis of femoral arterial flow velocity pattern with calculation of PI may be useful in postoperative evaluation of femoropopliteal reconstruction.


Asunto(s)
Arteriosclerosis/fisiopatología , Arteria Femoral/fisiopatología , Arteria Poplítea/fisiopatología , Reología , Ultrasonografía , Adulto , Anciano , Arteriosclerosis/cirugía , Velocidad del Flujo Sanguíneo , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad
17.
Acta Chir Scand ; 152: 257-61, 1986 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-2943104

RESUMEN

The femoral arterial flow velocity pattern in 164 limbs with aortoiliac atherosclerosis was analyzed preoperatively, using a pulsed wave Doppler ultrasound flowmeter. Following aortoiliac reconstruction, 32 limbs were studied. The highest (Va), the lowest (Vb) and the time average of the mean velocities (V mean) were obtained, and pulsatility index (PI = Va-Vb/V mean) was calculated. The aortoiliac obstruction was radiologically graded as reduction in cross-sectional area (less than 25%, 25-50%, greater than 50%) or complete occlusion. With increasing grade of stenosis, progressive reduction of PI (from 7.6 to 2.1) was observed. PI differed according to degree of obstruction. In 30 extremities with clinical improvement after vascular reconstruction, PI showed significant postoperative rise (from 2.7 to 6.9). In the two limbs without clinical benefit of surgery, PI was largely unaffected. A monophasic, flattened curve of femoral arterial flow velocity and reduced PI may indicate aortoiliac atherosclerosis. Normalization of PI and biphasic curve following aortoiliac reconstruction suggest successful treatment.


Asunto(s)
Arteriosclerosis/fisiopatología , Arteria Femoral/fisiopatología , Arteria Ilíaca/fisiopatología , Anciano , Aortografía , Arteriosclerosis/diagnóstico , Arteriosclerosis/cirugía , Velocidad del Flujo Sanguíneo , Endarterectomía , Arteria Femoral/diagnóstico por imagen , Estudios de Seguimiento , Humanos , Arteria Ilíaca/diagnóstico por imagen , Persona de Mediana Edad , Pronóstico , Reología
18.
Acta Chir Scand ; 154(4): 261-6, 1988 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-2967613

RESUMEN

Blood flow velocity in the common femoral artery was measured in 52 limbs of 45 patients with radiologic signs of aortoiliac atherosclerosis. Group A limbs had significant obstruction of the aortoilac segment; group B had not. 'Significant' implied a transobstruction pressure gradient of greater than or equal to 10 mmHg at rest or greater than or equal to 20 mmHg after intra-arterial injection of papaverine. Pulse-volume recording (PVR) and non-invasive measurement of the common femoral artery pressure (FAP) were also performed. Pulsatility index (PI) less than 3.9 and PVR amplitude less than 13 mm indicated significant obstruction, whereas PI greater than 5.4 and PVR amplitude greater than 20 mm were observed only in limbs without significant pressure gradient across the aortoiliac segment. PI 3.9-5.4 and PVR amplitude 13-20 mm were found in both groups. FAP and flow velocity during reactive hyperemia did not adequately distinguish the two groups, because of value overlap. In assessing the hemodynamic significance of aortoiliac obstruction, PI and PVR in the common femoral artery may be useful supplements to clinical examination, but measurement of the pressure gradient across the aortoiliac obstruction before and after vasodilation probably is most reliable.


Asunto(s)
Aorta Abdominal/fisiopatología , Arteriosclerosis/fisiopatología , Arteria Femoral/fisiopatología , Arteria Ilíaca/fisiopatología , Flujo Pulsátil , Reología , Anciano , Velocidad del Flujo Sanguíneo , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pulso Arterial
19.
Acta Radiol ; 28(6): 761-6, 1987.
Artículo en Inglés | MEDLINE | ID: mdl-2962616

RESUMEN

Measurements of ankle pressure index (API) and arterial flow velocity including calculation of pulsatility index (PI) from the common femoral and pedal arteries were performed in 89 limbs of 75 patients before and after percutaneous transluminal angioplasty (PTA) (63 iliac and 26 femoropopliteal). A pulsed wave Doppler ultrasound flowmeter was used. An increase of API at rest of at least 0.15 or the absence of pressure drop after exercise following PTA was used as criteria for a hemodynamically successful angioplasty. In patients with hemodynamically successful PTA of an iliac obstruction PI increased from 4.2 to 8.6 (p less than 0.001); 91 per cent of these patients improved clinically. When iliac angioplasty was hemodynamically unsuccessful, PI remained unchanged; 11 per cent of these patients improved clinically. All limbs with hemodynamically successful PTA of a femoropopliteal obstruction improved clinically and PI increased from 3.1 to 8.7 (p less than 0.001). After hemodynamically unsuccessful femoropopliteal PTA, PI remained unchanged though 25 per cent of these patients improved clinically. These results illustrate that measurement of arterial flow velocity with calculation of PI may be a useful supplement for the functional evaluation of the effect of PTA, since symptomatic response alone may be unreliable.


Asunto(s)
Angioplastia de Balón , Arteriosclerosis/fisiopatología , Pierna/irrigación sanguínea , Anciano , Anciano de 80 o más Años , Angiografía , Arteriosclerosis/diagnóstico por imagen , Arteriosclerosis/terapia , Velocidad del Flujo Sanguíneo , Femenino , Arteria Femoral , Humanos , Arteria Ilíaca , Masculino , Persona de Mediana Edad , Arteria Poplítea , Flujo Sanguíneo Regional , Reología , Ultrasonografía
20.
Tidsskr Nor Laegeforen ; 110(11): 1331-4, 1990 Apr 30.
Artículo en Noruego | MEDLINE | ID: mdl-2339376

RESUMEN

The syndrome of intestinal angina is rare and can be effectively treated by revascularization of the obstructed arteries. Usually the time from onset of symptoms to diagnosis is several months. Because of abdominal pain and loss of weight, abdominal malignancy is often suspected. At present there is no specific diagnostic test, and angiography with two projections is necessary. During the last decade 373 patients with intestinal angina have been reported. Our group presents two patients who have been operated on. After a follow-up of 18 and 19 months respectively, they are still without symptoms.


Asunto(s)
Intestinos/irrigación sanguínea , Isquemia/cirugía , Procedimientos Quirúrgicos Vasculares/métodos , Adulto , Anciano , Angiografía , Arteria Celíaca/cirugía , Enfermedad Crónica , Femenino , Estudios de Seguimiento , Humanos , Masculino , Arterias Mesentéricas/cirugía , Persona de Mediana Edad
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