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Holeman TA, Chester C, Hales JB, Zhang Y, Johnson CE, Brooke BS. Long-term patient-reported outcomes among patients undergoing revascularization vs medical therapy for intermittent claudication. J Vasc Surg 2024; 80:466-477.e4. [PMID: 38608965 PMCID: PMC11260535 DOI: 10.1016/j.jvs.2024.03.455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 02/29/2024] [Accepted: 03/16/2024] [Indexed: 04/14/2024]
Abstract
OBJECTIVE Society for Vascular Surgery guidelines recommend revascularization for patients with intermittent claudication (IC) if it can improve patient function and quality of life. However, it is still unclear if patients with IC achieve a significant functional benefit from surgery compared with medical management alone. This study examines the relationship between IC treatment modality (operative vs nonoperative optimal medical management) and patient-reported outcomes for physical function (PROMIS-PF) and satisfaction in social roles and activities (PROMIS-SA). METHODS We identified patients with IC who presented for index evaluation in a vascular surgery clinic at an academic medical center between 2016 and 2021. Patients were stratified based on whether they underwent a revascularization procedure during follow-up vs continued nonoperative management with medication and recommended exercise therapy. We used linear mixed-effect models to assess the relationship between treatment modality and PROMIS-PF, PROMIS-SA, and ankle-brachial index (ABI) over time, clustering among repeat patient observations. Models were adjusted for age, sex, diabetes, Charlson Comorbidity Index, Clinical Frailty Score, tobacco use, and index ABI. RESULTS A total of 225 patients with IC were identified, of which 40% (n = 89) underwent revascularization procedures (42% bypass; 58% peripheral vascular intervention) and 60% (n = 136) continued nonoperative management. Patients were followed up to 6.9 years, with an average follow-up of 5.2 ± 1.6 years. Patients who underwent revascularization were more likely to be clinically frail (P = .03), have a lower index ABI (0.55 ± 0.24 vs 0.72 ± 0.28; P < .001), and lower baseline PROMIS-PF score (36.72 ± 8.2 vs 40.40 ± 6.73; P = .01). There were no differences in patient demographics or medications between treatment groups. Examining patient-reported outcome trends over time; there were no significant differences in PROMIS-PF between groups, trends over time, or group differences over time after adjusting for covariates (P = .07, P = .13, and P =.08, respectively). However, all patients with IC significantly increased their PROMIS-SA over time (adjusted P = .019), with patients managed nonoperatively more likely to have an improvement in PROMIS-SA over time than those who underwent revascularization (adjusted P = .045). CONCLUSIONS Patient-reported outcomes associated with functional status and satisfaction in activities are similar for patients with IC for up to 7 years, irrespective of whether they undergo treatment with revascularization or continue nonoperative management. These findings support conservative long-term management for patients with IC.
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Affiliation(s)
- Teryn A Holeman
- Division of Vascular Surgery, University of Utah, School of Medicine, Salt Lake City, UT; Department of Population Health Science, University of Utah, School of Medicine, Salt Lake City, UT.
| | - Cassidy Chester
- Division of Vascular Surgery, University of Utah, School of Medicine, Salt Lake City, UT
| | - Julie B Hales
- Division of Vascular Surgery, University of Utah, School of Medicine, Salt Lake City, UT
| | - Yue Zhang
- Department of Population Health Science, University of Utah, School of Medicine, Salt Lake City, UT
| | - Cali E Johnson
- Division of Vascular Surgery, University of Utah, School of Medicine, Salt Lake City, UT
| | - Benjamin S Brooke
- Division of Vascular Surgery, University of Utah, School of Medicine, Salt Lake City, UT; Department of Population Health Science, University of Utah, School of Medicine, Salt Lake City, UT
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Parmar GM, Tanikella R, Gupta K, Dicks AB, Sakhuja R, Schainfeld R, Dua A, Weinberg I. High ankle-brachial index participants experienced similar long-term mortality as peripheral artery disease in a national sample of community-dwelling adults. J Vasc Surg 2024:S0741-5214(24)01249-7. [PMID: 38866374 DOI: 10.1016/j.jvs.2024.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 06/02/2024] [Accepted: 06/05/2024] [Indexed: 06/14/2024]
Abstract
BACKGROUND Only a few small studies have shown the association between high ankle-brachial pressure index (ABI >1.4) and adverse cardiovascular (CV) events and mortality. Although there is abundant literature depicting the association between ABI and overall systemic atherosclerosis, it typically focuses on low ABI. Furthermore, historically, many studies focusing on peripheral artery disease have excluded high ABI participants. We aimed to study the mortality outcomes of persons with high ABI in the National Health and Nutrition Examination Survey (NHANES). METHODS We obtained ABI from participants aged ≥40 years for survey years 1999 to 2004. We defined low a ABI as ≤0.9, normal ABI as 0.9 to 1.4, and high ABI as >1.4 or if the ankle pressures were >245 mm Hg. Demographics, various comorbidities, and laboratory test results were obtained at the time of the survey interview. Multivariable adjusted hazard ratios (HRs) along with 95% confidence intervals (CIs) were calculated for CV and all-cause mortality via Cox proportional hazards regression. Mortality was linked to all NHANES participants for follow-up through December 31, 2019, by the Centers for Disease Control and Prevention. RESULTS We identified 7639 NHANES participants with available ABI. Of these, 6787 (89%) had a normal ABI, 646 (8%) had a low ABI, and 206 (3%) had elevated ABI. Of participants with high ABI, 50% were men, 15% were African Americans, 10% were current smokers, 56% had hypertension, 33% had diabetes, 15% had chronic kidney disease (CKD), and 18% had concomitant coronary artery disease (CAD). Diabetes (odds ratio [OR], 2.4; 95% CI, 1.7-3.2), CAD (OR, 1.6; 95% CI, 1.0-2.4), and CKD (OR, 1.5; 95% CI, 1.0-2.3) at baseline were associated with having a high ABI, respectively. A high ABI was associated independently with elevated CV (HR, 2.6; 95% CI, 2.1-3.1; P < .0001) and all-cause mortality (HR, 2.5; 95% CI, 2.2-2.8; P < .0001) after adjusting for covariates, including diabetes, CKD, CAD, current smoking, cancer, and hypertension. CONCLUSIONS A high ABI is associated with an elevated CV and all-cause mortality, similar to patients with PAD. High ABI participants should receive the same attention and aggressive medical therapies as patients with PAD.
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Affiliation(s)
- Gaurav M Parmar
- Section of Vascular Medicine, Massachusetts General Hospital, Boston, MA.
| | | | - Kamal Gupta
- Department of Cardiovascular Medicine, Kansas University Medical Center, Kansas City, KS
| | - Andrew B Dicks
- Department of Vascular Surgery, Prisma Health, University of South Carolina School of Medicine, Greenville, SC
| | - Rahul Sakhuja
- Section of Vascular Medicine, Massachusetts General Hospital, Boston, MA
| | - Robert Schainfeld
- Section of Vascular Medicine, Massachusetts General Hospital, Boston, MA
| | - Anahita Dua
- Division of Vascular Surgery and Endovascular Therapy, Massachusetts General Hospital, Boston, MA
| | - Ido Weinberg
- Section of Vascular Medicine, Massachusetts General Hospital, Boston, MA
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3
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Dong Y, Liu Y, Liao H, Cheng P, Liu X, Huang W, Cai S, Jiang C, Liu S, Xu X, Li Y. Circumferential degree of tibial artery calcification is associated with infrapopliteal endovascular revascularization outcomes in patients with chronic limb-threatening ischemia. INT ANGIOL 2023; 42:528-536. [PMID: 38078712 DOI: 10.23736/s0392-9590.23.05130-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
BACKGROUND Tibial artery calcification (TAC) is correlated with an increased risk of amputation and mortality in patients with chronic limb-threatening ischemia (CLTI). The association between calcification characteristics and adverse limb events of CLTI. However, it has not been assessed. This study aims to assess the relationship between the characteristics of TAC based on computed tomography angiography (CTA) scans and postoperative outcomes in patients with CLTI undergoing infrapopliteal endovascular therapy. METHODS This was a retrospective study of patients who underwent infrapopliteal endovascular revascularization for CLTI and had a preoperative CTA scan. Based on CTA, TAC was divided into the following categories: annularity, thickness, continuity and severity. Cox regression models using generalized estimating equations were performed to assess the relationship between calcification characteristics and postoperative outcomes. The outcomes evaluated were the occurrence of all cause mortality (ACM) and unplanned amputation. RESULTS Among the 148 patients undergoing endovascular, there were 50 (33.8%) patients died and 26 (17.6%) patients underwent unplanned amputation. Annular calcification was more common in the ACM group than in the non-ACM group. No significant differences were found between the two groups with regard to the probability of calcification in the thickness and the continuity (P>0.05). Patients in the unplanned amputation group had significantly annular, thin and continuity calcifications (P<0.05) than those in the non-unplanned amputation group. The presence of annular calcification was an independent predictor of ACM (hazard ratio (HR), 3.186; 95% confidence interval (CI), 1.781-5.702; P<0.001) and unplanned amputation (HR, 3.739; 95% CI, 1.707-8.191; P<0.05). CONCLUSIONS Among patients with CLTI, the occurrence of annular calcification in the tibial artery are related to a greater chance of ACM and unplanned amputation in the postoperative period. The circumferential degree of TAC of the operated limb can be considered as a marker of clinical prognosis in this group of patients.
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Affiliation(s)
- Yue Dong
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuankang Liu
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hongli Liao
- Department of Radiology, Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Panpan Cheng
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoqi Liu
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wei Huang
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shuang Cai
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Cuiping Jiang
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shuhua Liu
- Department of Burns, Tongren Hospital of Wuhan University, Wuhan, China
| | - Xiangyang Xu
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ying Li
- Department of Radiology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China -
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van Overhagen H, Nakamura M, Geraghty PJ, Rao S, Arroyo M, Soga Y, Iida O, Armstrong E, Nakama T, Fujihara M, Ansari MM, Mathews SJ, Gouëffic Y, Jaff MR, Weinberg I, Pinto DS, Ohura N, Couch K, Mustapha JA. Primary results of the SAVAL randomized trial of a paclitaxel-eluting nitinol stent versus percutaneous transluminal angioplasty in infrapopliteal arteries. Vasc Med 2023; 28:571-580. [PMID: 37844137 PMCID: PMC10693734 DOI: 10.1177/1358863x231199489] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
BACKGROUND Effective and durable options for infrapopliteal artery revascularization for patients with chronic limb-threatening ischemia (CLTI) are limited. METHODS The SAVAL trial is a prospective, multicenter, randomized trial of patients with CLTI and infrapopliteal artery lesions with total lesion length ⩽ 140 mm, stenosis ⩾ 70%, and Rutherford category 4-5 assigned 2:1 to treatment with the SAVAL self-expandable paclitaxel drug-eluting stent (DES) or percutaneous transluminal angioplasty (PTA) with an uncoated balloon. The primary effectiveness endpoint was primary vessel patency (i.e., core lab-adjudicated duplex ultrasound-based flow at 12 months in the absence of clinically driven target lesion revascularization or surgical bypass of the target lesion). The primary safety endpoint was the 12-month major adverse event (MAE)-free rate; MAEs were defined as a composite of above-ankle index limb amputation, major reintervention, and 30-day mortality. The endpoints were prespecified for superiority (effectiveness) and noninferiority (safety) at a one-sided significance level of 2.5%. RESULTS A total of 201 patients were enrolled and randomly assigned to treatment (N = 130 DES, N = 71 PTA). Target lesion length was 68.1 ± 35.2 mm for the DES group and 68.7 ± 49.2 mm for the PTA group, and 31.0% and 27.6% of patients, respectively, had occlusions. The 12-month primary patency rates were 68.0% for the DES group and 76.0% for the PTA group (Psuperiority = 0.8552). The MAE-free rates were 91.6% and 95.3%, respectively (Pnoninferiority = 0.0433). CONCLUSION The SAVAL trial did not show benefit related to effectiveness and safety with the nitinol DES compared with PTA in infrapopliteal artery lesions up to 140 mm in length. Continued innovation to provide optimal treatments for CLTI is needed. (ClinicalTrials.gov Identifier: NCT03551496).
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Affiliation(s)
| | | | | | - Sid Rao
- Vascular Solutions of North Carolina, Cary, NC, USA
| | - Max Arroyo
- St Bernard’s Heart and Vascular, Jonesboro, AR, USA
| | | | - Osamu Iida
- Kansai Rosai Hospital, Hyogo, Amagasaki, Japan
| | - Ehrin Armstrong
- Rocky Mountain Regional VA Medical Center, Aurora, CO, USA
- Adventist Heart and Vascular Institute, Adventist Health, St Helena, CA, USA (current)
| | | | | | | | - Santhosh J Mathews
- Bradenton Cardiology Center, Manatee Memorial Hospital, Bradenton, FL, USA
| | - Yann Gouëffic
- Groupe Hospitalier Paris Saint Joseph, Paris, Île-de-France, France
| | | | - Ido Weinberg
- VasCore – The Vascular Imaging Core Laboratory, Boston, MA, USA
| | - Duane S Pinto
- Division of Cardiology, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Norihiko Ohura
- Kyorin University School of Medicine, Mitaka, Tokyo, Japan
| | - Kara Couch
- George Washington University Hospital, Washington, DC, USA
| | - Jihad A Mustapha
- Michigan State University College of Human Medicine, East Lansing, MI, USA
- Advanced Cardiac and Vascular Centers for Amputation Prevention, Grand Rapids, MI, USA
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Dari L, Constans J, Boulon C, Caradu C, Labépie FX, Bura-Rivière A, Chastaingt L, Lacroix P, Bezin J, Pariente A. Effects of iloprost in patients with critical limb ischemia: Results of a cohort study from the COPART registry. JOURNAL DE MEDECINE VASCULAIRE 2023; 48:163-173. [PMID: 38035922 DOI: 10.1016/j.jdmv.2023.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 10/20/2023] [Indexed: 12/02/2023]
Abstract
BACKGROUND Iloprost has been proposed as an alternative to amputation in Critical Limb Ischemia (CLI) patients when revascularization was unsuccessful or not possible. Nonetheless, there is limited evidence of its benefit. The main objective was to evaluate the effectiveness of iloprost and the secondary objective was to evaluate its safety. METHODS In this cohort study including CLI patients from the COPART registry from 2006/10 to 2021/01, patients exposed to iloprost were matched with up to three unexposed patients according to age, sex, and Propensity Score (PS) for exposure to iloprost. The main outcome combined the occurrence of all-cause death and major amputations; survival was assessed over one-year using Kaplan-Meier estimates and Cox model analyses. Major Adverse Cardiovascular Events (MACE) were chosen as the safety outcome; the association with iloprost was estimated using a logistic regression model. RESULTS Among 1850 CLI patients, 201 were exposed to iloprost (71.6% men; median age: 72 years vs. 72.1%; 75 years for unexposed). In 134 exposed patients matched to 375 unexposed patients, 14 major amputations and 24 deaths occurred in exposed patients (28.4%) vs. 33 and 46 respectively in the unexposed patients (20.9%). The hazard ratio (HR) was of 1.49 (95% Confidence Interval: 1.01-2.20). The association remained in the subgroup of "no option" patients (HR: 1.74; [1.01-2.20]). Regarding safety, 21/201 (10.7%) exposed patients experienced MACE vs. 146/1649 (9.41%) unexposed patients (unadjusted Odds Ratio [OR]: 1.17 [0.72-1.90]; adjusted OR: 1.23 [0.72-2.11]). CONCLUSION The study did not find any benefit of iloprost in CLI patients and even suggested a deleterious effect.
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Affiliation(s)
- L Dari
- Department of Vascular Medicine, Bordeaux University Hospital, Bordeaux, France; Inserm U1219 Bordeaux Population Health Team AHeaD: Assessing Health in a Digitalizing Real-World Setting Pharmacoepi and beyond, University of Bordeaux, Bordeaux, France.
| | - J Constans
- Department of Vascular Medicine, Bordeaux University Hospital, Bordeaux, France
| | - C Boulon
- Department of Vascular Medicine, Bordeaux University Hospital, Bordeaux, France
| | - C Caradu
- Department of Vascular Surgery, Bordeaux University Hospital, Bordeaux, France
| | - F-X Labépie
- Department of Vascular Medicine, Toulouse University Hospital, Toulouse, France
| | - A Bura-Rivière
- Department of Vascular Medicine, Toulouse University Hospital, Toulouse, France
| | - L Chastaingt
- Department of Vascular Medicine, Limoges University Hospital, Limoges, France
| | - P Lacroix
- Department of Vascular Medicine, Limoges University Hospital, Limoges, France
| | - J Bezin
- Inserm U1219 Bordeaux Population Health Team AHeaD: Assessing Health in a Digitalizing Real-World Setting Pharmacoepi and beyond, University of Bordeaux, Bordeaux, France
| | - A Pariente
- Inserm U1219 Bordeaux Population Health Team AHeaD: Assessing Health in a Digitalizing Real-World Setting Pharmacoepi and beyond, University of Bordeaux, Bordeaux, France
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Paskiewicz A, Wang FM, Yang C, Ballew SH, Kalbaugh CA, Selvin E, Salameh M, Heiss G, Coresh J, Matsushita K. Ankle-Brachial Index and Subsequent Risk of Severe Ischemic Leg Outcomes: The ARIC Study. J Am Heart Assoc 2021; 10:e021801. [PMID: 34726067 PMCID: PMC8751946 DOI: 10.1161/jaha.121.021801] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 08/25/2021] [Indexed: 12/24/2022]
Abstract
Background Ankle-brachial index (ABI) is used to identify lower-extremity peripheral artery disease (PAD). However, its association with severe ischemic leg outcomes (eg, amputation) has not been investigated in the general population. Methods and Results Among 13 735 ARIC (Atherosclerosis Risk in Communities) study participants without clinical manifestations of PAD (mean age, 54 [SD, 5.8] years; 44.4% men; and 73.6% White) at baseline (1987-1989), we quantified the prospective association between ABI and subsequent severe ischemic leg outcomes, critical limb ischemia (PAD with rest pain or tissue loss) and ischemic leg amputation (PAD requiring amputation) according to discharge diagnosis. Over a median follow-up of ≈28 years, there were 221 and 129 events of critical limb ischemia and ischemic leg amputation, respectively. After adjusting for demographics, ABI ≤0.90 versus 1.11 to 1.20 had a ≈4-fold higher risk of critical limb ischemia and ischemic leg amputation (hazard ratios, 3.85 [95% CI, 2.09-7.11] and 4.39 [95% CI, 2.08-9.27]). The magnitude of the association was modestly attenuated after multivariable adjustment (hazard ratios, 2.44 [95% CI, 1.29-4.61] and 2.72 [95% CI, 1.25-5.91], respectively). ABI 0.91 to 1.00 and 1.01 to 1.10 were also associated with these severe leg outcomes, with hazard ratios ranging from 1.7 to 2.0 after accounting for potential clinical and demographic confounders. The associations were largely consistent across various subgroups. Conclusions In a middle-aged community-based cohort, lower ABI was independently and robustly associated with increased risk of severe ischemic leg outcomes. Our results further support ABI ≤0.90 as a threshold diagnosing PAD and also suggest the importance of recognizing the prognostic value of ABI 0.91 to 1.10 for limb prognosis.
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Affiliation(s)
- Amy Paskiewicz
- Johns Hopkins Bloomberg School of Public HealthBaltimoreMD
| | | | - Chao Yang
- Johns Hopkins Bloomberg School of Public HealthBaltimoreMD
| | | | - Corey A. Kalbaugh
- Department of Public Health SciencesDepartment of BioengineeringClemson UniversityClemsonSC
| | | | - Maya Salameh
- Division of CardiologyJohns Hopkins University School of MedicineBaltimoreMD
| | - Gerardo Heiss
- University of North Carolina Gillings School of Global Public HealthChapel HillNC
| | - Josef Coresh
- Johns Hopkins Bloomberg School of Public HealthBaltimoreMD
| | - Kunihiro Matsushita
- Johns Hopkins Bloomberg School of Public HealthBaltimoreMD
- Division of CardiologyJohns Hopkins University School of MedicineBaltimoreMD
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7
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Losurdo F, Ferraresi R, Ucci A, Zanetti A, Clerici G, Zambon A. Association of infrapopliteal medial arterial calcification with lower-limb amputations in high-risk patients: A systematic review and meta-analysis. Vasc Med 2020; 26:164-173. [PMID: 33375914 DOI: 10.1177/1358863x20979738] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Medial arterial calcification (MAC) is a known risk factor for cardiovascular morbidity. The association between vascular calcifications and poor outcome in several vascular districts suggest that infrapopliteal MAC could be a risk factor for lower-limb amputation (LLA). This study's objective is to review the available literature focusing on the association between infrapopliteal MAC and LLA in high-risk patients. The PubMed and Embase databases were systematically searched. We selected original studies reporting the association between infrapopliteal MAC and LLAs in patients with diabetes and/or peripheral artery disease (PAD). Estimates were pooled using either a fixed-effects or a random-effects model meta-analysis. Heterogeneity was evaluated using the Q and I2 statistics. Publication bias was investigated with a funnel plot and Egger test. The trim-and-fill method was designed to estimate the possibly missing studies. Influence analysis was conducted to search studies influencing the final result. Test of moderators was used to compare estimates in good versus non-good-quality studies. Fifteen articles satisfied the selection criteria (n = 6489; median follow-up: 36 months). MAC was significantly associated with LLAs (pooled adjusted risk ratio (RR): 2.27; 95% CI: 1.89-2.74; I2 = 25.3%, Q-test: p = 0.17). This association was kept in the subgroup of patients with diabetes (RR: 2.37; 95% CI: 1.76-3.20) and patients with PAD (RR: 2.48; 95% CI: 1.72-3.58). The association was maintained if considering as outcome only major amputations (RR: 2.11; 95% CI: 1.46-3.06). Our results show that infrapopliteal MAC is associated with LLAs, thus suggesting MAC as a possible new marker of the at-risk limb.
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Affiliation(s)
- Fabrizio Losurdo
- Department of Statistics and Quantitative Methods, University of Milano-Bicocca, Milan, Italy.,Diabetic Foot Outpatient Clinic, ASST Bergamo-Est, P.O.T. 'F.M. Passi', Calcinate, BG, Italy
| | - Roberto Ferraresi
- Centro per la cura del Piede Diabetico, Clinica San Carlo, Paderno Dugnano, MI, Italy
| | - Alessandro Ucci
- Vascular Surgery, University Hospital of Parma, Parma, Italy
| | - Anna Zanetti
- Department of Statistics and Quantitative Methods, University of Milano-Bicocca, Milan, Italy
| | - Giacomo Clerici
- Centro per la cura del Piede Diabetico, Clinica San Carlo, Paderno Dugnano, MI, Italy
| | - Antonella Zambon
- Department of Statistics and Quantitative Methods, University of Milano-Bicocca, Milan, Italy.,Istituto Auxologico Italiano, IRCCS, Biostatistics Unit, Milan, Italy
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Konijn LC, Takx RA, de Jong PA, Spreen MI, Veger HT, Mali WP, van Overhagen H. Arterial calcification and long-term outcome in chronic limb-threatening ischemia patients. Eur J Radiol 2020; 132:109305. [DOI: 10.1016/j.ejrad.2020.109305] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 09/05/2020] [Accepted: 09/21/2020] [Indexed: 12/23/2022]
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9
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Construction and Validation of an Instrument for Assessing the Feet of Persons with Diabetes. Adv Skin Wound Care 2020; 33:267-271. [PMID: 32304450 DOI: 10.1097/01.asw.0000658588.28614.96] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To construct and validate an assessment instrument to evaluate the feet of people with diabetes mellitus in Brazil. METHODS Methodological research developed in three stages: construction of the Assessment Instrument for the Feet of People with Diabetes Mellitus, validation of face and content validity, and field research with 131 participating patients. The Pearson (r) and Spearman correlation coefficients (ρ) were used for criterion validity. To test reliability, the internal consistency of the Cronbach α domains was evaluated and simple κ, weighted κ, and intraclass correlation coefficients for interobserver evaluation were determined. RESULTS The instrument demonstrated validity and reliability. The content validity index represented a high internal consistency (α > .70). The interclass correlation coefficient was high (>0.98). The Pearson (r) and Spearman (ρ) correlation tests confirmed a correlation between the two variables. CONCLUSIONS The instrument was valid and reliable for assessing the feet of people with diabetes mellitus in Brazil. Future studies should identify the cut off point for the diagnosis of neuropathic and vascular impairment of the feet of diabetic persons through appropriate statistical methods.
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External validation of the Vascular Quality Initiative prediction model for survival in no-option chronic limb-threatening ischemia patients. J Vasc Surg 2020; 72:1659-1666.e1. [PMID: 32249040 DOI: 10.1016/j.jvs.2020.02.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 02/06/2020] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Chronic limb-threatening ischemia (CLTI) is associated with high morbidity and mortality rates. More than 50% of all CLTI patients die within 5 years after presentation. Patient-specific survival prediction is critical for informing treatment strategies, even for those without a clear option for revascularization. We validated a survival prediction model, developed in a revascularized Vascular Quality Initiative (VQI) cohort, in a Western European no-option CLTI cohort. METHODS The VQI survival prediction model was applied to the validation cohort (N = 150) to compare estimated mortality and observed mortality at 2 years after baseline. Performance of the VQI model was tested by evaluating discrimination using the receiver operating characteristic area under the curve and calibration using the Hosmer-Lemeshow goodness-of-fit test. RESULTS The 2-year survival rate was 79% in the validation cohort compared with 83% in the VQI cohort. Baseline characteristics were significantly different for 13 of 17 variables. The C statistic was 0.86 (95% confidence interval, 0.78-0.95), which indicates good discrimination. The Hosmer-Lemeshow goodness-of-fit test had a P value of .30, which indicates good fit. CONCLUSIONS This is the first external validation of the VQI survival prediction model. The good model performance suggests that this model can be used in different CLTI populations, including no-option CLTI, and underlines its contributory role in this challenging population.
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Mii S, Guntani A, Kawakubo E, Shimazoe H, Ishida M. Preoperative Nutritional Status is an Independent Predictor of the Long-Term Outcome in Patients Undergoing Open Bypass for Critical Limb Ischemia. Ann Vasc Surg 2020; 64:202-212. [DOI: 10.1016/j.avsg.2019.09.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 09/08/2019] [Accepted: 09/14/2019] [Indexed: 12/15/2022]
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Høyer C, Høgh AL, Sandermann J, Zacho HD, Petersen LJ. Risk factors and haemodynamic variables in patients with low toe-brachial index but normal ankle-brachial index. Atherosclerosis 2019; 289:21-26. [DOI: 10.1016/j.atherosclerosis.2019.08.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 06/19/2019] [Accepted: 08/16/2019] [Indexed: 11/26/2022]
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A Pro-Inflammatory Biomarker-Profile Predicts Amputation-Free Survival in Patients with Severe Limb Ischemia. Sci Rep 2019; 9:10740. [PMID: 31341203 PMCID: PMC6656730 DOI: 10.1038/s41598-019-47217-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 07/08/2019] [Indexed: 12/13/2022] Open
Abstract
Patients with Severe Limb Ischemia (SLI) have a high risk of amputation and mortality. Here, we investigated a panel of serum biomarkers with the aim of identifying biomarkers for major events and mechanisms that contribute to disease progression in established SLI. A panel of biomarkers including GROα, HGF, SCF, SCGFβ, SDF1α, TRAIL, IL-6, IL-8, FGFβ, GCSF, GMCSF, IP10, MCP1, PDGFbb, RANTES, TNFα, VEGF, sICAM, sVCAM, TM, and E-selectin was measured in serum samples from a subset (n = 108) of the JUVENTAS cohort. The primary outcome was major events, defined as major amputation or death. The inflammatory biomarkers IL-6, IL-8, GROα and IP-10 were significantly elevated in patients who reached a major endpoint. Results were validated in a secondary cohort (n = 146). Cox regression showed that adjusted hazard ratios were 1.40 (95% CI: 1.15-1.70, p = 0.0007) and 1.48 (95% CI 1.16-1.87, p = 0.001) for IL-6 and IP-10 in a fully adjusted model containing both biomarkers. A prediction model using IL-6 and IP-10 showed predictive accuracy with an AUC of ~ 78% in both discovery and validation cohorts, which is higher than previously published models. We conclude that inflammatory biomarkers predict major events in patients with SLI and allow the creation of biomarker-based risk-prediction models.
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