Improvement of Quality of Life Six Months After Infrageniculate Bypass Surgery: Diabetic Patients Benefit Less than Non-Diabetic Patients

Quality of Life in Chronic Limb Threatening Ischaemia: Systematic Review and Meta-Analysis

OBJECTIVE

To assess the comparative effectiveness and temporal changes in quality of life (QoL) outcomes after revascularisation, major lower extremity amputation (MLEA), and conservative management (CM) in chronic limb threatening ischaemia (CLTI).

DATA SOURCES

MEDLINE, Embase, PsycINFO, CINAHL, and Web of Science.

REVIEW METHODS

A systematic review and meta-analysis were performed on QoL measured by any QoL instrument in adult patients with CLTI after open surgery (OS), endovascular intervention (EVI), MLEA, or CM. Randomised controlled trials and prospective observational studies published in any language between 1 January 1990 and 21 May 2021 were included. There was a pre-specified measurement time point of six months. Random effects meta-analysis was conducted on total scores for each QoL instrument. Certainty of evidence was assessed using the Grading of Recommendations, Assessment, Development and Evaluations approach (PROSPERO registration: CRD42021253953).

RESULTS

Fifty-five studies with 8 909 patients were included. There was significant heterogeneity in the methods used to measure QoL, and the study characteristics. In particular, 14 different QoL instruments were used with various combinations of disease specific and generic instruments within each study. A narrative summary is therefore presented. Comparative effectiveness data showed there was reasonable certainty that QoL was similar between OS and EVI at six months. Temporal outcomes suggested small to moderate improvements in QOL six months after OS and EVI compared with baseline. Limited data indicated that QoL can be maintained or slightly improved after MLEA or CM. Treatment effects were overestimated owing to small study effects, selective non-reporting, attrition, and survivorship bias.

CONCLUSION

QoL after OS and EVI appears to be similar. Revascularisation may provide modest QoL benefits, while MLEA or CM can maintain QoL. However, certainty of evidence is generally low or very low, and interpretation is hampered by significant heterogeneity. There is a need for a CLTI specific QoL instrument and methodological standardisation in QoL studies.

An evaluation of lower urinary tract symptoms in diabetic patients: a cross-sectional study

BACKGROUND

Lower urinary tract symptoms (LUTS) are common among diabetic patients and represent hidden and mysterious morbidity. The pathophysiology of LUTS among diabetes mellitus (DM) patients is multifactorial. Importantly, LUTS is known to cause physical and psychological distress. Thus, this study describes LUTS among DM patients, investigates factors that may associate with it, and assesses the possible relationship between LUTS and the quality of life of diabetics.

METHODS

Over 6 months, data were collected from 378 diabetic patients in primary health care clinics. Demographic and clinical characteristics, Urogenital Distress Inventory-6 (UDI-6), and Incontinence Impact Questionnaire-7 (IIQ-7) were used to collect data. Univariate and multivariate analyses were performed.

RESULTS

Three hundred seventy-eight participants were included in this study. (29.9%) were (58-67) years old. 49% were female. Half of the cohort was overweight, and a third were obese. 81% were Type 2 DM. Almost all of them are on medical treatment. A median score of 5.50 (2.00-8.00) for the UDI-6 scale and a median score of 5 (0.00-10.00) for the IIQ-7 scale were reported. Multiple linear regression models showed that residency (p = 0.038) and regular exercise (p = 0.001) were significantly and negatively correlated with the UDI-6 score, while female gender (p = 0.042), insulin use (p = 0.009) and the presence of comorbidities (p = 0.007) were positively correlated with this score. Furthermore, age (p = 0.040) and body mass index (BMI) (p < 0.001) were significantly and positively associated with the IIQ-7 score.

CONCLUSION

LUTS is significant morbidity among DM patients. Factors such as age, BMI, and co-morbidities exacerbate LUTS, which can be modified and controlled. On the other hand, regular exercise and weight loss strategies help diabetic patients to improve LUTS.

Measuring Quality of Life in Chronic Limb-threatening Ischemia Patients and Informal Carers: A Scoping Review

OBJECTIVE

To review quality of life (QOL) instruments for chronic limb-threatening ischemia (CLTI) patients and informal carers, and their use in QOL and cost-utility analysis (CUA) studies.

BACKGROUND

CLTI is a global health problem with significant morbidity affecting patients and informal carers. QOL is increasingly measured for holistic outcomes assessment and CUA. However, measurement instruments in CLTI are poorly understood.

METHODS

MEDLINE, EMBASE, PsycINFO, CINAHL, COSMIN, PROQOLID, CEA registry, and NHS EED databases were searched for all English language studies up to May 2021. Features of instruments, evidence of measurement property appraisal, and trends in use were assessed. Prospective protocol registration (Open Science Framework: https://doi.org/10.17605/OSF.IO/KNG9U ).

RESULTS

A total of 146 studies on QOL instruments (n=43), QOL outcomes (n=97), and CUA (n=9) were included. Four disease-specific QOL instruments are available for lower extremity arterial disease (intermittent claudication or CLTI). VascuQoL-25 and VascuQoL-6 have been used in CLTI. There is no CLTI-specific instrument. Of 14 generic instruments, SF-36, EQ-5D-3L, NHP, and WHOQOL-BREF were most common. Studies reporting partial measurement property appraisal favored VascuQoL-25, VascuQoL-6, and SF-36. Feasibility considerations include mode of administration and responder burden. None of 4 available carer-specific instruments have been used in CLTI. Since 1992, the number of QOL studies has increased considerably, but CUA studies are scarce. Informal carers have not been assessed.

CONCLUSIONS

This review provides a comprehensive reference for QOL measurement in CLTI that helps end-users with instrument selection, use, and interpretation. However, a CLTI-specific instrument is needed. There is an opportunity to benefit society through future CUA studies and evaluation of QOL in informal carers.

A Delphi Consensus on Patient Reported Outcomes for Registries and Trials Including Patients with Intermittent Claudication: Recommendations and Reporting Standard

OBJECTIVE

This study aimed to develop a core set of patient reported outcome quality indicators (QIs) for the treatment of patients with intermittent claudication (IC), that allow a broad international implementation across different vascular registries and within trials.

METHODS

A rigorous modified two stage Delphi technique was used to promote consensus building on patient reported outcome QIs among an expert panel consisting of international vascular specialists, patient representatives, and registry members of the VASCUNET and the International Consortium of Vascular Registries. Potential QIs identified through an extensive literature search or additionally proposed by the panel were validated by the experts in a preliminary survey and included for evaluation. Consensus was reached if ≥ 80% of participants agreed that an item was both clinically relevant and practical.

RESULTS

Participation rates in two Delphi rounds were 66% (31 participants of 47 invited) and 90% (54 of 60), respectively. Initially, 145 patient reported outcome QIs were documented. Following the two Delphi rounds, 18 quality indicators remained, all of which reached consensus regarding clinical relevance. The VascuQoL questionnaire (VascuQoL-6), currently the most common patient reported outcome measurement (PROM) used within vascular registries, includes a total of six items. Five of these six items also matched with high rated indicators identified in the Delphi study. Consequently, the panel recommends the use of the VascuQoL-6 survey as a preferred core PROM QI set as well as an optional extension of 12 additional patient reported QIs that were also identified in this study.

CONCLUSION

The current recommendation based on the Delphi consensus building approach, strengthens the international harmonisation of registry data collection in relation to patient reported outcome quality. Continuous and standardised quality assurance will ensure that registry data may be used for future quality benchmarking studies and, ultimately, positively impact the overall quality of care provided to patients with peripheral arterial occlusive disease.

A systematic review of patient-reported outcome measures patients with chronic limb-threatening ischemia

Chronic limb-threatening ischemia (CLTI) causes significant morbidity with profound negative effects on health-related quality of life. As the prevalence of peripheral artery disease and diabetes continue to rise in our aging population, the public health impact of CLTI has escalated. Patient-reported outcome measures (PROMs) have become common and important measures for clinical evaluation in both clinical care and research. PROMs are important for the measurement of clinical effectiveness and cost effectiveness and for shared decision-making on treatment options. However, the PROMs used to describe the experience of patients with CLTI are heterogeneous, incomplete, and lack specific applicability to the underlying disease processes and diverse populations. For example, certain PROMs exist for patients with extremity wounds, and other PROMs exist for patients with pain, and still others exist for patients with vascular disease. Despite this multiplicity of tools, no single PROM encompasses all of the components necessary to describe the experiences of patients with CLTI. This significant unmet need is evident from both published reports and contemporary large-scale clinical trials in the field. In this systematic review, we review the current use of PROMs for patients with CLTI in clinical practice and in research trials and highlight the gaps that need to be addressed to develop a unifying PROM instrument for CLTI.

Health Related Quality of Life Over Time After Revascularisation in Patients With Chronic Limb Threatening Ischaemia

OBJECTIVE

Chronic limb threatening ischaemia (CLTI) decreases life expectancy and impairs health related quality of life (HR-QOL). Revascularisation is needed to relieve ischaemia and salvage limbs. Although a major goal of CLTI treatment is maintaining QOL, little information is available about changes of HR-QOL over time after revascularisation. HR-QOL with survival after revascularisation for CLTI was assessed.

METHODS

The clinical database of the Surgical reconstruction versus Peripheral INtervention in pAtients with critical limb isCHemia (SPINACH), a prospective multicentre observational study, was analysed. Outcome measures were disease specific QOL per the Vascular Quality of Life (VascuQOL) questionnaire and the Short Form (SF) 36 evaluated generic QOL, which were assessed at baseline and three, 12, 24, and 36 months. The outcome measure was change of QOL from baseline. The minimally important difference (half a standard deviation from baseline) was used as the cut off point for improved, worsened, and unchanged QOL.

RESULTS

Overall QOL was improved in 61% of patients for the VascuQOL and approximately 40% for the SF-36 component summaries at three months. However, these proportion gradually decreased to 21% - 31% at three years. In contrast, the proportion of deceased patients gradually increased over the three year follow up. Multivariable analysis revealed that pre-operative non-ambulatory status was inversely associated with improved QOL for the three month VascuQOL and SF-36 mental component summary, and surgical reconstruction was positively associated with these measurements. Advanced age and renal failure were inversely associated with improved QOL for the SF-36 mental component summary and VascuQOL at one to three years.

CONCLUSION

Revascularisation improved QOL. However, patients with non-ambulatory status exhibited a negative association with improved QOL at three months, and advanced age and renal failure limited benefits one to three years after revascularisation. Accumulating QOL data will be essential for post-revascularisation QOL estimation. Pre-operative assessment, including estimated QOL, is important in shared decision making for patient oriented outcomes in the treatment of CLTI patients.

Arterial Reconstruction for Patients with Chronic Limb Ischemia Improves Ambulatory Function and Health-related Quality of Life

BACKGROUND

Arterial reconstruction (AR) for limb ischemia may improve ambulatory function (AF) and health-related quality of life (HR-QoL). However, the efficacy of AR in terms of HR-QoL varies in studies, probably because of cohort differences in disease severity, hemodynamic outcomes, and observation duration. We assessed HR-QoL for patients with various severities of ischemia in a 3-year observational study.

METHODS

We conducted a single-center 3-year observational study using Short Form 36 in patients with chronic limb ischemia. Between 2001 and 2009, 515 consecutive patients had AR, and 330 who underwent elective AR consented to the study. Of the 330 patients (claudicants 49%, critical limb ischemia [CLI] 51%), 307 underwent bypass and 23 endovascular therapy. Postal questionnaires were sent after AR, and 8 domains, the physical and mental component summary (PCS and MCS) scores, and the patient-reported AF were compared, and negative predictors were identified.

RESULTS

Overall, the MCS was minimally affected, but AF and the PCS were impaired. After AR, these measures were significantly improved, and maximum recovery was attained at 6 months. In subgroup analysis, significant predictors of a negative impact on postoperative PCS included age ≥80, CLI, physical aftereffects of stroke (PAS), and previous major amputation (PMA). Of these, PMA was associated with the lowest PCS score, followed by PAS; for these patients, AR contributed minimally to HR-QoL recovery. PCS scores of claudicants attained a maximum value at 6 months; however, PCS scores of CLI patients were significantly lower than intermittent claudication patients (P < 0.0001), and patients with major tissue loss required 2 years to attain maximum PCS recovery.

CONCLUSIONS

This 3-year observational study verified the efficacy of AR in improving AF and HR-QoL. Age ≥80, CLI, PAS, and PMA were definitive predictors, and for patients with the latter 2, AR contributed minimally to improving HR-QoL.

[Guideline recommendations and quality indicators for invasive treatment of peripheral arterial disease in Germany : The IDOMENEO study for quality improvement and research in vascular medicine]

Due to the paucity of independent trials, practical guidelines for the diagnosis and treatment of peripheral arterial disease (PAD) contain several recommendations developed by expert consensus. Furthermore, there is a lack of commonly defined quality indicators and valid data on real world treatment. Therefore, it remains challenging to scrutinize if treatment reality is conforming to guideline recommendations. This article aims to give a short overview on existing guideline recommendations. It further aims to introduce the multistage multimethodological IDOMENEO study, utilizing primary registry data (GermanVasc) and health insurance claims data (BARMER) in PAD treatment.

Hind limb ischemia-reperfusion injury in diet-induced obese mice

BACKGROUND

Obesity is a major risk factor for the development of diabetes. Limb ischemia-reperfusion injury (IR) is a common clinical problem in diabetics who have compromised lower extremity perfusion. This study compared the histologic, metabolic, and functional outcomes after hind limb IR in diet-induced obese (DIO) and non-diabetic (ND) mice during the acute and the regenerative phases of IR.

METHODS

DIO and ND mice were subjected to 1.5 h unilateral hind limb ischemia followed by 1- or 28-d IR. Muscle morphology, metabolic, and genomic stress were evaluated at days 1 and 28 IR; Acute inflammation and thrombosis were only measured at day-1 IR. At day 28, IR, skeletal muscle contractility, and maturation were also assessed.

RESULTS

At day-1 IR, similar levels of acute muscle fiber necrosis were seen in both groups. DIO mice demonstrated substantially greater inflammatory, prothrombotic, and genomic stress responses, which were also associated with a greater reduction in energy substrates and Akt phosphorylation. At 28d, there was no difference in the peak forces generated in the hind limbs for the two groups. DIO mice had reduced fatigue resistance compared with ND and larger areas of fat accumulation although there was no significant difference in muscle fiber maturation.

CONCLUSIONS

DIO mice had an exacerbated acute response to IR with enhanced metabolic deficit, fat accumulation, and defective functional recovery during the regenerative phase of IR. These changes in fatigue resistance reflect compromised functional recovery after IR injury and have relevance for the functional recovery of patients with metabolic syndrome and insulin resistance.

Quality of life in patients with no-option critical limb ischemia underlines the need for new effective treatment

OBJECTIVE

To provide a solid baseline reference for quality of life (QoL) in patients with no-option critical limb ischemia (CLI). CLI is associated with surgery, endovascular interventions, hospitalization, and a poor prognosis. An increasing number of clinical trials are, therefore, investigating new treatment strategies (eg, therapeutic neovascularization) in patients with CLI. QoL serves as an important secondary endpoint in many of these trials, but solid reference QoL data for patients with no-option CLI are lacking.

METHODS

The Medical Outcomes Study Short Form 36 (SF-36) and the EuroQol-5D (EQ-5D) questionnaires were used to obtain baseline QoL scores from 47 patients with no-option CLI participating in a therapeutic neovascularization trial. To allow for easy comparability, a norm-based scoring (NBS) method was used to report the results of the SF-36. Scores of patients with CLI were furthermore compared with scores of patients with milder forms of peripheral arterial disease (PAD) and with patients with cardiovascular risk factors only. Determinants of QoL in patients with PAD were identified using multiple linear regression methods.

RESULTS

Patients with no-option CLI reported QoL scores below the general population mean on every health dimension of the SF-36. Physical functioning, role physical functioning, and bodily pain were affected most intensively. These poor physical QoL scores were further underlined when compared with other patients with milder forms of PAD or patients with cardiovascular risk factors only. Patients with CLI scored poorly on the pain/discomfort and the usual activities domain of the EQ-5D. Diabetes, female gender, body mass index, and the ankle-brachial index at rest were significant determinants of the QoL in PAD on multivariate analysis.

CONCLUSION

The QoL data of patients with no-option CLI using NBS methods for the SF-36 provide a baseline reference for ongoing clinical trials on new treatment strategies. Our data stress the need for new revascularization therapies in patients with no-option CLI.

Bypass versus Angioplasty in Severe Ischaemia of the Leg (BASIL) trial: An intention-to-treat analysis of amputation-free and overall survival in patients randomized to a bypass surgery-first or a balloon angioplasty-first revascularization strategy

BACKGROUND

A 2005 interim analysis of the Bypass versus Angioplasty in Severe Ischaemia of the Leg (BASIL) trial showed that in patients with severe lower limb ischemia (SLI; rest pain, ulceration, gangrene) due to infrainguinal disease, bypass surgery (BSX)-first and balloon angioplasty (BAP)-first revascularization strategies led to similar short-term clinical outcomes, although BSX was about one-third more expensive and morbidity was higher. We have monitored patients for a further 2.5 years and now report a final intention-to-treat (ITT) analysis of amputation-free survival (AFS) and overall survival (OS).

METHODS

Of 452 enrolled patients in 27 United Kingdom hospitals, 228 were randomized to a BSX-first and 224 to a BAP-first revascularization strategy. All patients were monitored for 3 years and more than half for >5 years.

RESULTS

At the end of follow-up, 250 patients were dead (56%), 168 (38%) were alive without amputation, and 30 (7%) were alive with amputation. Four were lost to follow-up. AFS and OS did not differ between randomized treatments during the follow-up. For those patients surviving 2 years from randomization, however, BSX-first revascularization was associated with a reduced hazard ratio (HR) for subsequent AFS of 0.85 (95% confidence interval [CI], 0.5-1.07; P = .108) and for subsequent OS of 0.61 (95% CI, 0.50-0.75; P = .009) in an adjusted, time-dependent Cox proportional hazards model. For those patients who survived for 2 years after randomization, initial randomization to a BSX-first revascularization strategy was associated with an increase in subsequent restricted mean overall survival of 7.3 months (95% CI, 1.2-13.4 months, P = .02) and an increase in restricted mean AFS of 5.9 months (95% CI, 0.2-12.0 months, P = .06) during the subsequent mean follow-up of 3.1 years (range, 1-5.7 years).

CONCLUSIONS

Overall, there was no significant difference in AFS or OS between the two strategies. However, for those patients who survived for at least 2 years after randomization, a BSX-first revascularization strategy was associated with a significant increase in subsequent OS and a trend towards improved AFS.

Health-related quality of life in diabetic patients with carpal tunnel syndrome

AIMS

To determine health-related quality of life (HRQL) in diabetic and non-diabetic patients with carpal tunnel syndrome (CTS) before and after surgical treatment.

METHODS

In a prospective study, 35 consecutive diabetic patients with CTS were age and gender matched with 31 non-diabetic patients with idiopathic CTS. At baseline (preoperatively), 6, 12 and 52 weeks after surgical carpal tunnel release, patients completed the generic Short-Form 36 (SF-36) and the disease-specific Boston Carpal Tunnel Questionnaire (BCTQ).

RESULTS

The SF-36 physical component scores at baseline were significantly reduced for diabetic (39+/-7.4) compared with non-diabetic patients (48+/-9.0) (P<0.05). Mixed model analysis demonstrated no differences in post-surgical improvement over time between diabetic and non-diabetic patients. The largest clinical effect was found for bodily pain (effect size 0.8). However, population norms were not reached for the diabetic patients. At baseline, no difference was found in mental component score, which deteriorated over time for diabetic patients. At baseline, BCTQ demonstrated that diabetic patients experienced more pronounced 'numbness in the hand' than non-diabetic patients. Large clinical improvements were found in both symptom severity (effect size 1.98-2.14) and functional status score (effect size 0.89-0.94) for both diabetic and non-diabetic patients, with no difference between the two patient groups.

CONCLUSIONS

HRQL is impaired in diabetic patients with CTS compared with non-diabetic patients with CTS and population norms. However, diabetic patients experience similar symptomatic and functional benefits from carpal tunnel release as do non-diabetic patients.

[Patient assessments of quality of life following bypass for chronic critical limb ischaemia]

The value of infrainguinal bypass surgery for critical limb ischaemia (CLI) in elderly patients is being scrutinised more as medical resources decline. Despite technically successful revascularisation, patient quality of life seems impaired by delayed wound healing and repeated hospitalisation for interventions and operations. Therefore it is questionable whether these frail patients benefit from bypass surgery with respect to their health-related quality of life. This review examines current evidence of patients with CLI and summarises the effect of bypass surgery on their own quality of life assessments. All in all, patients benefit from the revascularisation because ambulation status improves and independence is preserved. From a patient's perspective these improvements in quality of life justify an aggressive approach towards revascularisation for CLI.

The Effects of Interventions on Health-Related Quality of Life Among Persons With Diabetes

BACKGROUND

Health-related quality of life (HRQL) is increasingly used to measure the outcomes of interventions among people with chronic diseases.

OBJECTIVES

To assess the effect of interventions for adults with diabetes on HRQL, as measured by the Short Form (SF)-36 questionnaire.

RESEARCH DESIGN

The systematic review was conducted using the methods of the Cochrane Collaboration. Studies reporting SF-36 scores before and after an intervention focused on adults with diabetes were obtained from searches of multiple bibliographic databases. The mean changes and standardized mean differences between pre- and post-intervention were reported as outcome measures. Pooled estimates were obtained using random effects models.

RESULTS

: We identified 33 studies examining a wide range of interventions, including diabetes education and behavioral modifications (15 studies), pharmacotherapy (11 studies), and surgery (7 studies). Interventions generally demonstrated improvement in HRQL. When all available profile scores were examined together, the ranges of mean changes in scores were as follows: surgery for treating diabetes comorbidities, 15.0 to 42.0 point improvement; surgery for treating diabetes complications, -13.0 to 37.9; pharmacotherapy using insulin to optimize glycemic control, -4.6 to 27.6; pharmacotherapy for treating comorbidities, 3.8 to 33.2; pharmacotherapy for treating complications, -2.6 to 14.6. Pooled effects from 5 randomized controlled trials of educational interventions demonstrated significantly improved physical function [3.4 (95% CI, 0.1-6.6)] and mental health [4.2 (95% CI, 1.8-6.6)], and a decrease in bodily pain [3.6 (95% CI, 0.6-6.7)].

CONCLUSIONS

A variety of interventions can improve HRQL among adults with diabetes, but the magnitude of effects varied with the interventions. The mechanism of these changes needs to be further examined in the future research.