Colorectal cancer recurrence and its impact on survival after curative surgery: An analysis based on multistate models.

AIM: To investigate the usefulness of multistate models (MSM) for determining colorectal cancer (CRC) recurrence rate, to analyse the effect of different factors on tumour recurrence and death, and to assess the impact of recurrence for CRC prognosis. METHODS: Observational follow-up study of incident CRC cases disease-free after curative resection in 2006-2013 (n = 994). Recurrence and mortality were analyzed with MSM, as well as covariate effects on transition probabilities. RESULTS: Cumulative incidence of recurrence at 60 months was 13.7%. Five years after surgery, 70.3% of patients were alive and recurrence-free, and 8.4% were alive after recurrence. Recurrence has a negative impact on prognosis, with 5-year CRC-related mortality increasing from 3.8% for those who are recurrence-free 1-year after surgery to 33.6% for those with a recurrence. Advanced stage increases recurrence risk (HR = 1.53) and CRC-related mortality after recurrence (HR = 2.35). CRC-related death was associated with age in recurrence-free patients, and with comorbidity after recurrence. As expected, age≥75 years was a risk factor for non-CRC-related death with (HR = 7.76) or without recurrence (HR = 4.26), while its effect on recurrence risk was not demonstrated. CONCLUSIONS: MSM allows detailed analysis of recurrence and mortality in CRC. Recurrence has a negative impact on prognosis. Advanced stage was a determining factor for recurrence and CRC-death after recurrence.

Foot health and quality of life in women with breast cancer undergoing chemotherapy: a cross-sectional study.

BACKGROUND: Chemotherapy is one of the most widely used therapies for breast cancer, triggering important repercussions on people's quality of life. However, little research has been undertaken about podiatric adverse effects. This study aimed was to determine the prevalence of podiatric pathology developed in people with breast cancer who receive chemotherapy. METHODS: Observational, descriptive, and cross-sectional study was conducted in the Oncology service of the A Coruña University Hospital (northwest Spain). People with breast cancer and undergoing chemotherapy treatment of legal age (≥ 18), who signed the informed consent (n = 117) were included. Sociodemographic, comorbidity, disease and foot health variables, as well as two self-administered questionnaires (Foot Health Status Questionnaire and Foot Function Index) were studied. The current ethical-legal aspects were followed. RESULTS: Foot health problems were highly prevalent, highlighting nail color changes (59.8%), onychocryptosis (39.7%), xerosis (62.4%), plantar fasciitis (12.8%), and neuropathic symptoms (75.2%). Some foot pain was presented in 77.8% of the sample, predominantly at nail level (15.4%) or sole of the foot and nail (14.5%). Most participants described their foot health as fair or poor (56.4%) and felt limited in walking (65.8%). The lowest score for the Foot Health Status Questionnaire was footwear (30.6(33.5)). CONCLUSIONS: Foot health adverse effects represent worrisome problems in women with breast cancer undergoing chemotherapy, due to their high prevalence and negative implications on quality of life. These problems are critical as they may have implications for stopping or reducing chemotherapy. All these results call for the development of more research to contribute to the care and wellbeing of people with cancer who receive treatments such as chemotherapy. Thus, this line of research is a new path to be developed by the podiatry community.

Foot Health in People with Cancer Undergoing Chemotherapy: A Scoping Review.

BACKGROUND: Chemotherapy has relevant implications for cancer patients' physical, social, and psychological health. Foot health has gained relevance in recent years due to its importance to independence and wellbeing, especially in chronic conditions. This study aims to explore the scope of the literature regarding foot health problems in people with cancer undergoing chemotherapy. METHODS: scoping review following the PRISMA-ScR, Arksey and O'Malley, and the Joanna Briggs Institute guidelines. Different databases were used (Cochrane Plus, Scopus, Web of Science, and Pubmed). A total of 4911 articles were identified. Finally, 11 papers were included. RESULTS: Foot problems are relevant and deteriorate wellbeing. The prevalence of some podiatric pathologies is controversial. The main literature deals with hand-foot syndrome and peripheral neuropathy. Focused instruments on foot health were not thoroughly used. CONCLUSION: There is insufficient evidence on foot health problems and their influence on the quality of life of people with cancer undergoing chemotherapy. Even though a significant percentage of this population has a foot problem, its care and importance are neglected. More studies are needed to contribute to the care of people with cancer through foot health.

Wellbeing and Complementary Therapies in Breast Cancer Peripheral Neuropathy Care: A Scoping Review Focused on Foot Health.

BACKGROUND: Chemotherapy-induced peripheral neuropathy is a multidimensional health problem. Up to now, little evidence has been found concerning its impact on quality of life and foot health. Evaluation tools and prevention and treatment strategies must be reported. This study aimed to map the literature on the impact of this side effect on the wellbeing and foot health of people with breast cancer and to describe their main assessment strategies and complementary therapies. METHODS: A scoping review was carried out while following the PRISMA-ScR and Arksey and O'Malley guidelines. Different databases (Cochrane Plus, Scopus, Web of Science, and Pubmed) were used. A total of 221 results were identified. Sixteen articles were included. RESULTS: The thematic analysis obtained the following categories: the impact of peripheral neuropathy on quality of life and foot health, complementary therapies as a path for new strategies, and the need for clinicians and researchers to get involved in researching this side effect. CONCLUSIONS: Peripheral neuropathy has a negative impact on people's quality of life. Implications for foot health and maintaining an active and healthy lifestyle have not been previously reported. Complementary therapies are recommended by scientific evidence, highlighting exercise. However, there is a need to develop more research that will help to incorporate them into evidence-based practice.

Sexual Dysfunction in Ostomized Patients: A Systematized Review.

The impact of an ostomy has a negative influence on sexuality. Healthcare professionals focus the care on surgery, and consider the sexual life is little relevant to the patient recovery. The aim of this systematized review is to give visibility to the sexual problems that ostomy patients have, to know what kind of sexual dysfunction occurs in this patients, to give information to the nursing staff about sexual disturbances and to recommend some resources to restart sexual activity. The research was conducted following de PRISMA guidelines and performed in several databases. Twelve papers were used to perform the systematized review. After ostomy, sexual dysfunction is different in men and women. It is related by the psychological aspects (low self-esteem, body image deterioration, etc.), the physical aspects (type of resection, complications, etc.) and the acceptance by the partner. A personalized sexual education focused on sexual problems that appear in ostomy patients is necessary to implement. In this way, adequate support, information and resources before and after surgery could be given for both, patients and their partners.

Cone-Beam CT-Guided Lung Biopsies: Results in 94 Patients.

BACKGROUND: The aim of this study was to evaluate the diagnostic capacity of Cone-Beam computed tomography (CT)-guided transthoracic percutaneous biopsies on lung lesions in our setting and to detect risk factors for possible complications. METHODS: Retrospective study of 98 biopsies in 94 patients, performed between May 2017 and January 2020. To obtain them, a 17G coaxial puncture system and a Siemens Artis Zee Floor vc21 archwire were used. Descriptive data of the patients, their position at the time of puncture, location and size of the lesions, number of cylinders extracted, and complications were recorded. Additionally, the fluoroscopy time used in each case, the doses/area and the estimated total doses received by the patients were recorded. RESULTS: Technical success was 96.8%. A total of 87 (92.5%) malignant lesions and 3 (3.1%) benign lesions were diagnosed. The sensitivity was 91.5% and the specificity was 100%. We registered three technical failures and three false negatives initially. Complications included 38 (38.8%) pneumothorax and 2 (2%) hemoptysis cases. Fluoroscopy time used in each case was 4.99 min and the product of the dose area is 11,722.4 microGy/m2. CONCLUSION: The transthoracic biopsy performed with Cone-Beam CT is accurate and safe in expert hands for the diagnosis of lung lesions. Complications are rare and the radiation dose used was not excessive.

Characterisation of long-term cancer survivors and application of statistical cure models: a protocol for an observational follow-up study in patients with colorectal cancer.

BACKGROUND: Improved colorectal cancer (CRC) survival rates have been reported over the last years, with more than half of these patients surviving more than 5 years after the initial diagnosis. Better understanding these so-called long-term survivors could be very useful to further improve their prognosis as well as to detect other problems that may cause a significant deterioration in their health-related quality of life (HRQoL). Cure models provide novel statistical tools to better estimate the long-term survival rate for cancer and to identify characteristics that are differentially associated with a short or long-term prognosis. The aim of this study will be to investigate the long-term prognosis of CRC patients, characterise long-term CRC survivors and their HRQoL, and demonstrate the utility of statistical cure models to analyse survival and other associated factors in these patients. METHODS: This is a single-centre, ambispective, observational follow-up study in a cohort of n = 1945 patients with CRC diagnosed between 2006 and 2013. A HRQoL sub-study will be performed in the survivors of a subset of n = 485 CRC patients for which baseline HRQoL data from the time of their diagnosis is already available. Information obtained from interviews and the clinical records for each patient in the cohort is already available in a computerised database from previous studies. This data includes sociodemographic characteristics, family history of cancer, comorbidities, perceived symptoms, tumour characteristics at diagnosis, type of treatment, and diagnosis and treatment delay intervals. For the follow-up, information regarding local recurrences, development of metastases, new tumours, and mortality will be updated using hospital records. The HRQoL for long-term survivors will be assessed with the EORTC QLQ-C30 and QLQ-CR29 questionnaires. An analysis of global and specific survival (competitive risk models) will be performed. Relative survival will be estimated and mixture cure models will be applied. Finally, HRQoL will be analysed through multivariate regression models. DISCUSSION: We expect the results from this study to help us to more accurately determine the long-term survival of CRC, identify the needs and clinical situation of long-term CRC survivors, and could be used to propose new models of care for the follow-up of CRC patients.

Randomized clinical trial to determine the effectiveness of CO-oximetry and anti-smoking brief advice in a cohort of kidney transplant patients who smoke.

Background: measure the efficacy of exhaled carbon monoxide (CO) measurement plus brief advisory sessions to reduce smoking exposure and smoking behaviour in kidney transplant recipients. Methods: Randomized, controlled, open-label clinical trial at a Spanish hospital.Smoking kidney transplant recipients giving their consent to participate were randomized to control (brief advice, n=63) or intervention group (brief advisory session plus measuring exhaled CO, n=59). Measurements: Sociodemographic characteristics, cardiovascular risk factors, treatment, rejection episodes, infections, self-reported smoking, drug use, level of dependence and motivation to stop smoking (Fagerström's and Richmond's test) and stage of change (Prochaska and DiClemente's Stages). Efficacy was assessed at 3, 6, 9 and 12 months as: cotinine test, CO levels in exhaled air, nicotine dependence, motivational stages of change, motivation to stop smoking, pattern of tobacco use and smoking cessation rates. Logistic regression models were computed. Results: At 12 months of follow-up, differences were found in exhaled CO between the intervention and control group(6.1±6.8vs.10.2±9.7ppm;p=0.028). Carboxyhemoglobin levels were lower in the intervention group as well as the positive cotinine test (1.2±1.2%vs.2.0±2.4%;p=0.039),(53.4%vs.74.2%). At 12 months, intervention reduces the probability of a positive urine test by 28%. Conclusions: Co-oximetry is a clinically relevant intervention for reduction of tobacco exposure in kidney transplant recipients.

Kidney transplant patient with Kaposi sarcoma in the left foot. / Trasplantado renal con sarcoma de Kaposi en el pie izquierdo.

53 year old renal transplanted male with secondary amyloidosis to Crohn´sdisease, sent to Dermatology given the presence of multiple red-purple or hyperkeratotic...

Varón de 53 años de edad, trasplantado renal hace 12 años por amiloidosis secundaria a enfermedad de Crohn, a tratamiento diario con 10 mg de prednisona....

Structural, Dermal and Ungual Characteristics of the Foot in Patients with Type II Diabetes.

Background and Objectives: Diabetes is a chronic and metabolic disease, considered as an important public health problem. The objective of this study was to determine the prevalence of podiatric pathology in type II diabetic patients. Materials and Methods: An observational descriptive study of prevalence in the endocrinology service of Complexo Hospitalario Universitario A Coruña (CHUAC) (A Coruña-Spain) was carried out (n = 153). Type II diabetic patients included, of legal age who signed the informed consent. Sociodemographic variables were studied (age, sex, body mass index (BMI), smoking habit, alcohol consumption, family history), disease variables (time of evolution of diabetes, treatments, low-density lipoprotein (LDL), high-density lipoprotein (HDL), glucose), podiatric variables: measurement of the footprint, metatarsal and digital formula, nail, skin, hindfoot and forefoot alterations. The data collection was done in 2018 and the data analysis was carried out in 2019. Results: The patients with type II diabetes had greater age, obesity and arterial hypertension it compared to the general population. Diabetic patients had a higher prevalence of flat feet than the general population (71.2% vs. 20.7%, p < 0.001), with a predominance of normal foot according to the podoscope. The predominant podological pathology was the presence of claw toes (94.8%), followed by dermal (78.4%) and nail (71.9%) alterations, and the Hallux Valgus (66.0%). The Clarke angle and the Chippaux index showed a Kappa concordance index of 0.26 with the type of footprint measured with the podoscope. The Staheli index showed a Kappa index of 0.27 associated with an observed agreement of 54%. Conclusions: This study shows that foot problems continue to be prevalent in subjects with type II diabetes mellitus and for this reason, podiatry is essential in its treatment.

Concordance between the Different Cardiovascular Risk Scores in People with Rheumatoid Arthritis and Psoriasis Arthritis.

AIM: To determine the cardiovascular risk and the concordance between the different scores in people with rheumatoid arthritis (RA) and psoriatic arthritis (PsA). METHODS: Observational descriptive study of prevalence. Performed in the Rheumatology Service and the Clinical Epidemiology and Biostatistics Unit of the University Hospital Complex of A Coruña (Spain). Patients diagnosed with RA or PsA, older than 18 years of age were included. Measurements: sociodemographic, anthropometric variables of the disease, comorbidity, cardiovascular risk, and therapeutic management. RESULTS: 151 subjects (75 RA and 76 PsA) were studied. The average age was 57.9 ± 12.2 years, 61.6% being women. The average of the Charlson index was 2.8 ± 1.5. 43% were overweight. 46.5% were classified as cardiovascular risk, and the average percentage was 33.3% by Framingham. The best agreement has been between Framingham and Dorica (k = 0.709; p < 0.001), classifying more than 80% of the cases in the same risk categories. CONCLUSIONS: The most prevalent risk factors were overweight and obesity, followed by smoking and hypertension. The prevalence of patients with moderate/high cardiovascular risk varies according to the score used, the levels of concordance being the scores of Framingham and Dorica.

Prevalencia de artrosis de rodilla en una muestra aleatoria poblacional en personas de 40 y más años de edad / Prevalence of knee osteoarthritis in a random population sample in people aged 40 and over

Resumen Introducción: La artrosis es la enfermedad osteoarticular con mayor prevalencia en todo el mundo. En los países industrializados, 80 % de la población > 65 años la padece. Objetivos: Determinar la prevalencia de artrosis sintomática en rodilla en una muestra aleatoria poblacional, las variables asociadas y su repercusión en el dolor y funcionalidad. Método: Análisis descriptivo y multivariado de regresión logística realizado en el Centro de Salud de Cambre, A Coruña. Se incluyó una muestra de 707 pacientes. Se estudiaron variables antropométricas, comorbilidad y exploración clínica de rodillas. Para evaluar el dolor y la funcionalidad se utilizaron los cuestionarios validados WOMAC y Lequesne. Resultados: 56.3 % de los pacientes eran mujeres y la media de edad de 61.75 años. La prevalencia de artrosis sintomática en al menos una rodilla fue de 29.3 %. Las personas con artrosis presentaron puntuaciones más altas en las dimensiones dolor, rigidez y capacidad funcional del cuestionario WOMAC (30 ± 35.7, 33.8 ± 40.5 y 25.4 ± 40.1, respectivamente), así como puntuaciones más altas en el cuestionario de Lequesne (9.0 ± 8.8). Conclusiones: Se ha determinado alta prevalencia de personas con artrosis que se modifica con el sexo, la edad y el índice de masa corporal.

Abstract Introduction: Osteoarthritis is the osteoarticular disease with the highest prevalence worldwide. In industrialized countries, 80% of the population > 65 years suffers from it. Objectives: To determine the prevalence of symptomatic osteoarthritis of the knee in a random population sample, its associated variables and its impact on pain and functionality. Methods: Descriptive and multivariate logistic regression analysis carried out at the Cambre Health Center, A Coruña. A sample of 707 patients was included. Anthropometric variables, comorbidity and clinical examination of the knees were assessed. The validated WOMAC and Lequesne questionnaires were used to assess pain and functionality. Results: 56.3% of the patients were females, and mean age was 61.75 years. The prevalence of symptomatic osteoarthritis in at least one knee was 29.3%. People with osteoarthritis had higher scores in the pain, stiffness and functional capacity dimensions of the WOMAC questionnaire (30.0 ± 35.7, 33.8 ± 40.5 and 25.4 ± 40.1, respectively) and had higher scores in the Lequesne questionnaire as well (9.0 ± 8.8). Conclusions: A high prevalence of people with osteoarthritis has been determined, which is modified with gender, age and body mass index.

Incidence of cardiovascular events and associated risk factors in kidney transplant patients: a competing risks survival analysis.

BACKGROUND: The high prevalence of cardiovascular risk factors among the renal transplant population accounts for increased mortality. The aim of this study is to determine the incidence of cardiovascular events and factors associated with cardiovascular events in these patients. METHODS: An observational ambispective follow-up study of renal transplant recipients (n = 2029) in the health district of A Coruña (Spain) during the period 1981-2011 was completed. Competing risk survival analysis methods were applied to estimate the cumulative incidence of developing cardiovascular events over time and to identify which characteristics were associated with the risk of these events. Post-transplant cardiovascular events are defined as the presence of myocardial infarction, invasive coronary artery therapy, cerebral vascular events, new-onset angina, congestive heart failure, rhythm disturbances, peripheral vascular disease and cardiovascular disease and death. The cause of death was identified through the medical history and death certificate using ICD9 (390-459, except: 427.5, 435, 446, 459.0). RESULTS: The mean age of patients at the time of transplantation was 47.0 ± 14.2 years; 62% were male. 16.5% had suffered some cardiovascular disease prior to transplantation and 9.7% had suffered a cardiovascular event. The mean follow-up period for the patients with cardiovascular event was 3.5 ± 4.3 years. Applying competing risk methodology, it was observed that the accumulated incidence of the event was 5.0% one year after transplantation, 8.1% after five years, and 11.9% after ten years. After applying multivariate models, the variables with an independent effect for predicting cardiovascular events are: male sex, age of recipient, previous cardiovascular disorders, pre-transplant smoking and post-transplant diabetes. CONCLUSIONS: This study makes it possible to determine in kidney transplant patients, taking into account competitive events, the incidence of post-transplant cardiovascular events and the risk factors of these events. Modifiable risk factors are identified, owing to which, changes in said factors would have a bearing of the incidence of events.

Variability between Clarke's angle and Chippaux-Smirak index for the diagnosis of flat feet / Variabilidad entre el ángulo de Clarke y el índice de Chippaux- Smirak para el diagnóstico de pie plano

Abstract Background: The measurements used in diagnosing biomechanical pathologies vary greatly. The aim of this study was to determine the concordance between Clarke's angle and Chippaux-Smirak index, and to determine the validity of Clarke's angle using the Chippaux-Smirak index as a reference. Methods: Observational study in a random population sample (n= 1,002) in A Coruña (Spain). After informed patient consent and ethical review approval, a study was conducted of anthropometric variables, Charlson comorbidity score, and podiatric examination (Clarke's angle and Chippaux-Smirak index). Descriptive analysis and multivariate logistic regression were performed. Results: The prevalence of flat feet, using a podoscope, was 19.0% for the left foot and 18.9% for the right foot, increasing with age. The prevalence of flat feet according to the Chippaux-Smirak index or Clarke's angle increases significantly, reaching 62.0% and 29.7% respectively. The concordance (kappa I) between the indices according to age groups varied between 0.25-0.33 (left foot) and 0.21-0.30 (right foot). The intraclass correlation coefficient (ICC) between the Chippaux-Smirak index and Clarke's angle was -0.445 (left foot) and -0.424 (right foot). After adjusting for age, body mass index (BMI), comorbidity score and gender, the only variable with an independent effect to predict discordance was the BMI (OR= 0.969; 95% CI: 0.940-0.998). Conclusion: There is little concordance between the indices studied for the purpose of diagnosing foot arch pathologies. In turn, Clarke's angle has a limited sensitivity in diagnosing flat feet, using the Chippaux-Smirak index as a reference. This discordance decreases with higher BMI values.

Resumen Introducción: Existe una gran variabilidad en las mediciones para el diagnóstico de la patología biomecánica. El objetivo de este estudio fue determinar la concordancia entre el ángulo de Clarke y el índice de Chippaux-Smirak, para determinar la validez del ángulo de Clarke utilizando como referencia el índice de Chippaux-Smirak. Métodos: Se realizó un estudio observacional en una muestra aleatoriamente seleccionada (n= 1,002) en A Coruña (España). Tras el consentimiento informado del paciente y la aprobación del comité de ética, se estudiaron variables, antropométricas, índice de comorbilidad de Charlson y un examen podológico (ángulo de Clarke, índice de Chippaux-Smirak). Se realizó un estudio descriptivo y un análisis multivariado de regresión logística. Resultados: La prevalencia de pie plano utilizando el podoscopio fue de 19.0% (pie izquierdo) y 18.9% (pie derecho), incrementándose con la edad. La prevalencia de pie plano según el índice Chippaux-Smirak o el ángulo de Clarke se incrementan considerablemente llegando a 62.0% y 29.7%. La concordancia (kappa I) entre los índices según grupos de edad oscila entre 0.25-0.33 (pie izquierdo) y 0.21-0.30 (pie derecho). El coeficiente de correlación intraclase (CCI) entre el índice de Chippaux-Smirak y el ángulo de Clarke es -0.445 (pie izquierdo) y 0.424 (pie derecho). Tras ajustar por edad, índice de masa corporal (IMC), score de comorbilidad y sexo la única variable con un efecto independiente para predecir discordancia es el IMC (OR= 0.969; IC 95%: 0.940-0.998). Conclusiones: La concordancia entre los índices estudiados para el diagnóstico de la patología del arco plantar es reducida. Existe a su vez una reducida sensibilidad del ángulo de Clarke para el diagnóstico de pie plano, utilizando como referencia el índice de Chippaux-Smirak. Esta discordancia disminuye con valores más altos de IMC.

A randomized clinical trial to determine the effectiveness of CO-oximetry and anti-smoking brief advice in a cohort of kidney transplant patients who smoke: study protocol for a randomized controlled trial.

BACKGROUND: The cardiovascular risk in renal transplant patients is increased in patients who continue to smoke after transplantation. The aim of the study is to measure the effectiveness of exhaled carbon monoxide (CO) measurement plus brief advisory sessions, in comparison to brief advice, to reduce smoking exposure and smoking behavior in kidney transplant recipients who smoke. The effectiveness will be measured by: (1) abandonment of smoking, (2) increase in motivation to stop smoking, and (3) reduction in the number of cigarettes smoked per day. DESIGN: a randomized, controlled, open clinical trial with blinded evaluation. SCOPE: A Coruña Hospital (Spain), reference to renal transplantation in the period 2012-2015. INCLUSION CRITERIA: renal transplant patients who smoke in the precontemplation, contemplation or preparation stages according to the Prochaska and DiClemente's Stages of Change model, and who give their consent to participate. EXCLUSION CRITERIA: smokers attempting to stop smoking, patients with terminal illness or mental disability that prevents them from participating. RANDOMIZATION: patients will be randomized to the control group (brief advisory session) or the intervention group (brief advisory session plus measuring exhaled CO). The sample target size is n = 112, with 56 patients in each group. Allowing for up to 10 % loss to follow-up, this would provide 80 % power to detect a 13 % difference in attempting to give up smoking outcomes at a two-tailed significance level of 5 %. MEASUREMENTS: sociodemographic characteristics, cardiovascular risk factors, treatment, rejection episodes, infections, self-reported smoking habit, drug use, level of dependence (the Fagerström test), stage of change (Prochaska and DiClemente's Stages of Change model), and motivation to giving up smoking (the Richmond test). RESPONSE: the effectiveness will be evaluated every 3, 6, 9 and 12 months as: pattern of tobacco use (self-reported tobacco use), smoking cessation rates, carbon monoxide (CO) levels in exhaled air measured by CO-oximetry, urinary cotinine tests, nicotine dependence (Fagerström test), motivational stages of change (Prochaska and DiClemente's stages) and motivation to stop smoking (the Richmond test). ANALYSIS: descriptive statistics and linear/logistic multiple regression models will be performed. Clinical relevance will be measured as relative risk reduction, absolute risk reduction and the number needed to treat. ETHICS: informed consent of the patients and Ethical Review Board was obtained (code 2011/061). DISCUSSION: Tobacco is a modifiable risk factor that increase the risk of morbidity and mortality in kidney transplant recipients. If effectiveness of CO-oximetry is confirmed to reduce tobacco exposure, we would have an intervention that is easy to use, low cost and with great implications about cardiovascular risk prevention in these patients. TRIAL REGISTRATION: Current Controlled Trials ISRCTN16615772 . EudraCT number: 2015-002009-12.