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PURPOSE: To describe a novel bailout technique to approach below-the-ankle (BTA) chronic total occlusions or plantar-arch severe disease where the balloon/catheter is unable to follow the crossing guidewire and no other described recanalization approach is feasible. TECHNIQUE: When facing a complex BTA revascularization, if the guidewire crosses but the balloon cannot progress due to a lack of pushability, an antegrade puncture of the infrapopliteal vessel where the tip of the guidewire lays is performed. The guidewire is then carefully navigated through this distal BTA vessel into the needle to achieve its rendezvous and externalization. A low-profile balloon is inserted through the femoral access and advanced till the non-crossable point of the BTA vessels. A torque device is then attached to the proximal hub of the balloon, and the through-and-through guidewire is subsequently pulled from the new distal access, allowing the balloon to be dragged across the lesion together with the wire. CONCLUSION: The below-the-ankle antegrade teleferic (BAT) technique may be considered for highly complex BTA revascularization procedures where the wire crosses the lesion, but no other device can be tracked over it. CLINICAL IMPACT: The clinical impact of this article lies in the description of a bailout technique for BTA revascularization where the guidewire crosses, but no device can be advanced. This technique can be helpful in scenarios where failure to achieve success could result in limb loss. The BAT technique provides a solution in extremely challenging cases, enhancing technical success, improving outcomes and potentially preserving the limbs of patients who would otherwise face amputation, if not revascularized.The video shows the BAT technique performed with a support catheter under fluoroscopy: antegrate puncture of the DP, advancement of the support catheter over the wire, rendezvous of the guidewire in the catheter and subsequent externalization of the wire.

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CLINICAL IMPACT: When the standard endovascular crossing maneuvers have failed during CLTI recanalization procedures and the distal below-the-knee or proximal below-the-ankle retrograde access is not possible due to chronic occlusion of the vessels, mastering the more distal and complex retrograde BTA punctures may be advantageous.There are scanty reports regarding the retrograde puncture of the mid and forefoot vessels. The aim of this article is to review different tips and tricks related to these techniques to help operators to apply them in specific scenarios to eventually improve procedural success rate.

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OBJECTIVE: To evaluate the clinical efficacy of a new antioxidant therapy for the treatment of complex neuroischaemic diabetic foot ulcers (DFUs). METHOD: A prospective case series study has been conducted in patients with complex neuroischaemic DFUs after transmetatarsal amputation. DFUs were locally treated with an antioxidant dressing twice a week for the first two weeks, and then once a week until the end of the study or complete wound closure. Patients were followed-up for eight weeks and assessed weekly to analyse wound outcome. Primary outcomes were the wound closure ratio and percentage of granulation tissue; secondary outcomes were parameters related to wound management, namely, presence of non-viable tissue in the wound bed, levels of maceration and exudates, presence of erythema and pain. RESULTS: A total of 20 patients were included with a mean baseline wound area of 20.4cm2. At 8 weeks, the mean reduction in wound area was 88.1% (p<0.0001) and complete closure was observed in 33% of cases. In addition, there was a mean increase of 94.7% in granulation tissue in the wound bed (p<0.0001). Furthermore, the therapy was associated with a significant percentage reduction in wounds with non-viable tissue, good exudate management, and the maintenance of low levels of maceration, erythema and pain. CONCLUSION: The new antioxidant therapy was associated with good clinical outcomes in large hard-to-heal neuroischaemic DFUs, with significant wound area reduction and granulation tissue formation. The therapy was also found to be safe and perform well from a practical perspective.

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PURPOSE: To describe a novel bailout technique to approach below-the-knee chronic total occlusions after a failed bidirectional recanalization attempt using the plantar loop maneuver in patients who are poor candidates for a retrograde puncture. TECHNIQUE: After a failure of recanalization of the opposite tibial artery using the plantar loop maneuver, an assisted direct retrograde transpedal approach can be performed regardless of poor vessel caliber or even arterial occlusion. After crossing the plantar arch, a low profile angioplasty balloon is used as a landmark for the pedal puncture and to give guidance for the wire advancement from the new access. CONCLUSION: A balloon-assisted retrograde transpedal approach may be considered for below-the-knee recanalization after standard plantar loop technique failure in patients who are not candidates for conventional retrograde puncture.

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PURPOSE: The purpose of the study is to describe a bailout technical strategy to prevent below-the-knee (BTK) distal embolization during procedures with increased inherent risk using universally-available "off-the-shelf" devices. TECHNIQUE: A conventional retrograde access is obtained of the BTK target vessel where embolization protection is sought. Before starting any potential proximal maneuver with an associated significant risk of distal embolization (eg, atherectomy and mechanical thrombectomy), a low-profile balloon is inserted and inflated through the distal retrograde access, so that any debris resulting from the recanalization procedure is blocked by the stagnant column of blood generated by the inflated balloon. Once the revascularization procedure has been completed, a 4F curved catheter is antegradely advanced down to the distally-inflated balloon, and in case of distal embolization the debris is aspirated in a standard fashion way. CONCLUSION: A retrograde balloon-assisted "off-the-shelf" embolic protection approach may be considered for BTK revascularization procedures where there is an inherent increased risk of distal trash, especially in the presence of distal single-vessel runoff. CLINICAL IMPACT: Distal embolization following endovascular procedures can have devastating consequences and there is a general recommendation for selective use of EPDs in high-risk-scenarios. The increased cost and low availability of the current EPD devices for BTK/BTA arteries have prohibited their widespread use. The retrograde balloon-assisted "off-the-shelf" EPD prevents distal embolization during procedures with increased risk of distal trash using inexpensive, nonspecific equipment available in any basic endovascular suite.

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OBJETIVO: Evaluar la efectividad de intervenciones basadas en telemedicina para mejorar resultados en salud en pacientes con multimorbilidad en atención primaria. DISEÑO: Revisión sistemática. Fuentes de datos: INAHTA, Guía Salud, NICE, Cochrane Library, Medline/PubMed y EMBASE hasta abril de 2018. Selección de estudios: CRITERIOS DE INCLUSIÓN: pacientes (adultos con 2 o más enfermedades crónicas o índice de Charlson mayor de 3); intervención (programa de telemedicina desarrollada en atención primaria); comparador (práctica habitual); resultados (mortalidad, ingresos hospitalarios, consultas a urgencias, calidad de vida relacionada con la salud y satisfacción); diseño (guía de práctica clínica, revisión sistemática, metaanálisis, ensayo clínico controlado aleatorizado o cuasiexperimental). Publicación en inglés o español. Se localizaron 236 referencias. Extracción de datos: Exclusión de duplicados; valoración de criterios de selección sobre título, resumen y texto completo; valoración crítica; extracción y análisis cualitativo. Dos revisores y un tercero para discrepancias. RESULTADOS: Se incluyeron 5 artículos de 3 estudios, 2 ensayos clínicos controlados aleatorizados y en cuasiexperimental. No se observaron resultados significativos en la reducción de la mortalidad o mejora de la calidad de vida relacionada con la salud. La efectividad de la telemedicina sobre el número de ingresos hospitalarios o consultas a urgencias mostró resultados contradictorios. La satisfacción no fue medida en los estudios incluidos. CONCLUSIONES: El escaso número de estudios, la relativa heterogeneidad y limitaciones metodológicas no permiten confirmar la efectividad de las intervenciones basadas en telemedicina en pacientes con multimorbilidad en atención primaria, sobre la mejora de la mortalidad, el número de ingresos hospitalarios o consultas a urgencias y calidad de vida relacionada con la salud, respecto a la práctica habitual

OBJECTIVE: To evaluate the effectiveness of telemedicine interventions to improve health outcomes in patients with multiple morbidities in Primary Health Care. DESIGN: A systematic review. Data sources: INAHTA, Health Guidelines, NICE, Cochrane Library, Medline/PubMed and EMBASE up to April 2018. Study selection: Inclusion criteria: patients (adults with 2 or more chronic diseases or a Charlson index greater than three); intervention (telemedicine intervention developed entirely in Primary Health Care); comparator (usual care); health outcomes (mortality, hospital admissions, emergency department visits, health-related quality of life, and satisfaction); study design(clinical practice guideline, systematic review, meta-analysis, randomised controlled clinical trial),and quasi-experimental design). English and Spanish language publication. A total of236 references were located. Data extraction: Duplicated articles were removed. Titles, abstracts, and full text of references identified were assessed using the selection criteria; methodological quality assessment; data extraction, and qualitative analysis. RESULTS: Five articles, corresponding to 3 studies, were included, with 2 randomised controlled clinical trials and one quasi-experimental design. No significant results were observed in reducing mortality or improving health-related quality of life. The effectiveness of telemedicine on the number of hospital admissions or emergency visits showed contradictory results. Satisfaction was not measured in the studies included. CONCLUSIONS: The relatively small number of studies, heterogeneity characteristics, and methodological limitations did not confirm the effectiveness of telemedicine intervention on the improvement of mortality, number of hospital admissions, emergency department visits, and health-related quality of life, compared to usual care

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Purpose: To present a simple method to avoid favored passage of a guidewire into the profunda femoris artery (PFA) after antegrade puncture of the common femoral artery. Technique: A 6-F conventional introducer sheath with a radiopaque distal marker is placed on the nurse's table with its side port orientated to the 12 o'clock position. A small (2-2.5 mm) oval fenestration is created on the superior aspect of the sheath about 3 cm from its tip with a size 11 surgical blade. The modified introducer is passed over the angled 0.035-inch guidewire into the PFA and gently retrieved until the tip marker is ~3 cm from the femoral bifurcation. The dilator is removed, and the guidewire is withdrawn to the level of the fenestration, manipulated through it, and advanced further into the superficial femoral artery under fluoroscopic guidance. Conclusion: When repeated passage of the guidewire down the PFA persists despite conventional manipulation of the wire or needle, an on-site modification of the sheath is an easy alternative approach for the catheterization of the superficial femoral artery.

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OBJECTIVE: To evaluate the effectiveness of telemedicine interventions to improve health outcomes in patients with multiple morbidities in Primary Health Care. DESIGN: A systematic review. DATA SOURCES: INAHTA, Health Guidelines, NICE, Cochrane Library, Medline/PubMed and EMBASE up to April 2018. STUDY SELECTION: Inclusion criteria: patients (adults with 2 or more chronic diseases or a Charlson index greater than three); intervention (telemedicine intervention developed entirely in Primary Health Care); comparator (usual care); health outcomes (mortality, hospital admissions, emergency department visits, health-related quality of life, and satisfaction); study design(clinical practice guideline, systematic review, meta-analysis, randomised controlled clinical trial),and quasi-experimental design). English and Spanish language publication. A total of236 references were located. DATA EXTRACTION: Duplicated articles were removed. Titles, abstracts, and full text of references identified were assessed using the selection criteria; methodological quality assessment; data extraction, and qualitative analysis. RESULTS: Five articles, corresponding to 3 studies, were included, with 2 randomised controlled clinical trials and one quasi-experimental design. No significant results were observed in reducing mortality or improving health-related quality of life. The effectiveness of telemedicine on the number of hospital admissions or emergency visits showed contradictory results. Satisfaction was not measured in the studies included. CONCLUSIONS: The relatively small number of studies, heterogeneity characteristics, and methodological limitations did not confirm the effectiveness of telemedicine intervention on the improvement of mortality, number of hospital admissions, emergency department visits, and health-related quality of life, compared to usual care.

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PURPOSE: To evaluate the efficacy of a new guidewire threading instrument (GTI) in reducing guidewire threading times compared with the traditional freehand method. MATERIALS AND METHODS: This prospective, controlled, single-center study recruited 100 subjects (mean age 45.2±11.3 years; 43 men) and divided them into 2 groups depending on their professional background: 50 experienced medical personnel (performed or assisted in >50 catheter-based procedures) and 50 medical personnel with no experience in endovascular techniques (inexperienced group). The threading time of both groups was recorded using the conventional freehand method and with the GTI for both 0.035- and 0.014-inch platforms. Users of eyeglasses for presbyopia were tested with and without glasses. Median values are reported with the interquartile range (IQR; Q1, Q3) in parentheses. RESULTS: The mean insertion times with both the 0.035-inch and 0.014-inch guidewires in the overall study group were significantly better with the use of the GTI compared with the traditional freehand method (p<0.001). Both the experienced and the inexperienced participants improved their insertion times using the GTI with both guidewire platforms (p<0.001). The threading time with the new device was also significantly reduced (p<0.001) for both participants with presbyopia and those without. When comparing the median absolute time improvement (difference between freehand/GTI insertion times) for the 0.014-inch platform, the inexperienced group showed a greater improvement in their performance [3.52 seconds (IQR 2.76, 5.12)] compared with the experienced group [1.87 seconds (IQR 1.37, 2.66), p<0.001]. The median "absolute time improvement" was also significantly greater for the presbyopic group [5.75 seconds (IQR 3.14, 8.20)] vs the group without age-related visual impairment [2.64 seconds (IQR 1.65, 3.36), p<0.001]. CONCLUSION: This simple and inexpensive homemade device facilitates wire threading of low-profile catheters and seems to be especially helpful for trainees with no experience and presbyopic operators.

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A case of a femoropopliteal recanalization procedure using a new bailout technical maneuver to aid reentry into the true lumen is described. After a failed standard reentry attempt, at the level of the vessel reconstitution in the subintimal space, the guidewire was exchanged for a GooseNeck Snare Kit. A needle was inserted across the target artery, piercing both arterial walls and passing through the snare loop. Once the needle had exited the artery, a wire was inserted and the needle withdrawn. The snare was closed, withdrawn, and the wire externalized through the femoral access. Finally, a catheter was advanced from the antegrade sheath up to the arterial reconstitution. Selective injection at the site of reentry confirmed the intraluminal position, and the procedure was successfully completed from the antegrade sheath.

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PURPOSE: To describe a maneuver to facilitate percutaneous arteriovenous fistula creation during venous arterialization procedures in patients with no-option critical limb ischemia. TECHNIQUE: Following a failed arterial recanalization attempt, a balloon catheter is passed up to the tip of the guidewire. Venous access is gained distally, a 4-F sheath is antegradely passed, and a 4-mm GooseNeck snare is advanced through it. A fluoroscopic view that overlaps the snare and the inflated balloon is obtained. If the vein remains anterior with respect to the artery, a needle is inserted across the vein, passing through the snare loop and puncturing the intra-arterial balloon. A wire is inserted and placed inside the punctured balloon. The balloon is retrieved and the wire externalized through the femoral access. A catheter is advanced antegradely over this wire from the artery into the vein. If the vein remains posterior to the artery, a needle is inserted, puncturing the balloon and thereafter the vein (crossing through the snare). A wire is inserted, captured by the snare, and externalized through the vein sheath. A catheter is finally advanced over this wire from the vein into the artery. CONCLUSION: This maneuver is a simple alternative to create an arteriovenous fistula during venous arterialization procedures in patients with no-option critical limb ischemia.

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PURPOSE: To describe a simple maneuver to facilitate the retrograde puncture of challenging tibial vessels in the lower leg. TECHNIQUE: Because of the depth of the tibial vessels at the mid to upper calf, especially in obese or muscular patients, a 7- or 9-cm, 21-G micropuncture needle is often needed to reach the artery. However, the low profile of the needle contributes to its flexibility and therefore the tendency to bend as it progresses through the deep tissues, hindering access to the target vessel. To overcome this obstacle, a 4- to 5-cm, 18-G needle is initially placed pointing to the artery. The 21-G needle is advanced through it to the target site. This simple maneuver increases the support to the 21-G needle, preventing its bending and facilitating arterial puncture in the presence of calcified vessels. CONCLUSION: The telescoping needle technique may be considered as a bailout procedure in the retrograde tibial approach after failed attempts secondary to needle bending or calcified vessels.

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PURPOSE: To describe a technical trick to overcome a prior failed retrograde puncture of the tibial vessels secondary to arterial calcification. TECHNIQUE: Following a prior failed retrograde puncture attempt, the needle is left in place next to the artery. The tip of the needle is then moved toward the artery as a lever so that the artery is fixed between the needle, the skin, and the surrounding tissues. With the artery fixed, a standard puncture procedure is performed. Alternatively, if additional support is needed, 2 micropuncture needles are inserted one on either side of the artery, crossing under the target vessel and hence trapping it between them, providing additional support and therefore enhancing the chance of successful arterial access. CONCLUSION: The buddy needle technique may be considered as an alternative procedure in a retrograde pedal/tibial approach after prior failed standard attempts in patients with heavily calcified vessels.

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Antegrade puncture is a routinely used technique of obtaining access to the common femoral artery to perform infrainguinal interventions. However, antegrade arterial access can be challenging in the presence of hostile, scarred groins, obesity, or a high common femoral artery bifurcation. A simple method of converting a retrograde femoral access to an antegrade catheterization using an inexpensive and universally available monofilament suture is presented.

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INTRODUCTION: Arterial injuries due to total hip arthroplasty can be a serious complication. The risk of vascular injury is related to proximity of the structures, tractions, and the aggressive use of instruments. OBJECTIVES: To analyze the frequency, injury mechanism, clinical presentation and therapeutic options in this kind of injury. PATIENTS AND METHOD: A group of 4162 patients subjected to total hip arthroplasty between 1986 and 2006 (reinterventions 7.2%). We describe 8 cases (5 women and 3 men) with a mean age of 61 years (reinterventions 50%). The vascular surgery was performed at less than 1 hour (n = 4), 6 hours (n = 2), 16 hours (n = 1) and 20 days (n = 1). RESULTS: The most frequent locations were external iliac artery (n = 3), common femoral (n = 3), internal iliac (n = 1) and deep femoral (n = 1). The clinical presentation was, internal bleeding (50%), acute limb ischemia (37%) and subacute limb ischemia (13%). The surgical interventions were bypass (50%), arteriorrhaphy (25%), primary repair (12.5%), and thrombectomy and patching (12.5%). One case was reoperated 6 years later, as we found a false anastomotic aneurism in a previous ilio-femoral bypass. The death and amputation rates were 0%. CONCLUSIONS: Although these injuries are rare, they involve a life-threatening complication. The external iliac artery/common femoral artery are the most frequent location. Most patients required a bypass, although the surgical technique depends on the injury location.

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