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INTRODUCTION

Total knee arthroplasty (TKA) is a surgery that aims to restore function and relieve pain in advanced osteoarthritis. The Educational Workshop (EW) for TKA is given to patients in the pre-surgery period to inform them and facilitating their participation in their health process (empowerment). The aim of this study was developing and validating a self-administered questionnaire to evaluate the acquired knowledge after the EW by the patients who will undergo the TKA procedure.

MATERIAL AND METHODS

It was a longitudinal and prospective observational study with a sample of TKA candidate patients. The phases for the construction and validation of this ad hoc questionnaire were: Phase 1: A panel of experts who agreed on a final questionnaire of 20 items; Phase 2: Pilot test administered to 47 patients; Phase 3: Final test of 11 items administered to 50 patients, before and after the EW; Phase 4: Re-test, after the EW and 2 weeks after, administered to 58 patients.

RESULTS

One hundred and fifty five patients were included. The Cronbach's alpha coefficient for the item's internal consistency of the final questionnaire, 11 items, was 0.78. To reach the criterion validity, in pre-EW the mean number of hits was: 4.92 (SD=1.78) and in post-EW 10.68 (SD=0.55), a difference that had a statistical significance p<.0001, with no overlap in the 95% CI of the mean: 4.46-5.38/10.54-10.82. The test for stability and reliability, re-test, obtained a mean of right answers 10.87 (SD=0.33) and for the re-test of 10.70 (SD=0.59). The correlation of the interclass coefficient for the re-test was 0.99, which corresponds almost to a maximum concordance.

CONCLUSIONS

The questionnaire developed in this study is a reliable and easy tool to evaluate the acquired knowledge in the EW for patients who will be TKA operated.

[Involvement of intestinal dysbiosis in the etiopathogenesis and treatment of autism spectrum disorder: a bibliographic review]

INTRODUCTION

Autism spectrum disorder is a neurodevelopmental disorder with phenotypic heterogeneity and variable symptomatic course of partly unknown etiology. The prevalence of gastrointestinal disorders in autism leads to investigate the role that intestinal microbiota may have as a causal factor and to propose specific therapeutic interventions. The role of microbiota in brain development and function, demonstrated in animal models, justifies its investigation in this neuropsychiatric disorder.

OBJECTIVE

The aim was to investigate the relationship between altered microbiota composition and autism spectrum disorder, and to assess the therapeutic role of prebiotics, probiotics and fecal transplantation in this neurodevelopmental disorder.

DEVELOPMENT

A literature review was conducted in PubMed, Cochrane Library and Google Scholar to select relevant articles related to the topic that were published between January 2012 and April 2020. Thirty-five relevant articles were selected. In 23 of them, significant differences were found in the composition and diversity of the microbiota in children with ASD, as well as in the biomolecules involved in certain metabolic pathways. The other 12 investigations reported gastrointestinal and behavioral improvements after therapeutic intervention.

CONCLUSIONS

It is reasonable to state that there is enough evidence to support the existence of a relationship between intestinal microbiota and autism spectrum disorders. This fact should be explored in depth to assess the etiopathogenic burden of dysbiosis and the possible therapeutic tools.

Analysis of the perfusion of the optic nerve using angio-OCT in glaucoma

The introduction of optical coherence tomography angiography (OCT-A) has generated interest in evaluating vascular dysfunctions in the optic nerve head for the diagnosis and monitoring of glaucoma. The purpose of this study is to compare perfusion of the optic disc between normal subjects and subjects with glaucoma using OCT-A in order to detect changes in perfusion of the optic disc. Using the OCT-A AngioVue® system, an examination was performed on 40 eyes of 40 patients (20 with glaucoma and 20 healthy controls). Total radial peripapillary flow density (4.5×4.5mm) was measured at different levels of segmentation. The study demonstrated that the peripapillary vascular flow of OCT-A and exploration of the optic nerve head was better in the normal eyes compared to glaucoma patients. This review provides a comprehensive summary of the most important current and potential applications of OCT-A in glaucoma.

Outcomes and prognostic factors in intermediate-risk prostate cancer: multi-institutional analysis of the Spanish RECAP database

PURPOSE

To retrospectively assess outcomes and to identify prognostic factors in patients diagnosed with intermediate-risk (IR) prostate cancer (PCa) treated with primary external beam radiotherapy (EBRT).

MATERIALS AND METHODS

Data were obtained from the multi-institutional Spanish RECAP database, a population-based prostate cancer registry in Spain. All IR patients (NCCN criteria) who underwent primary EBRT were included. The following variables were assessed: age; prostate-specific antigen (PSA); Gleason score; clinical T stage; percentage of positive biopsy cores (PPBC); androgen deprivation therapy (ADT); and radiotherapy dose. The patients were stratified into one of three risk subcategories: (1) favourable IR (FIR; GS 6, ≤ T2b or GS 3 + 4, ≤ T1c), (2) marginal IR (MIR; GS 3 + 4, T2a-b), and (3) unfavourable IR (UIR; GS 4 + 3 or T2c). Biochemical relapse-free survival (BRFS), disease-free survival (DFS), cancer-specific survival (CSS), and overall survival (OS) were assessed.

RESULTS

A total of 1754 patients from the RECAP database were included and stratified by risk group: FIR, n = 781 (44.5%); MIR, n = 252 (14.4%); and UIR, n = 721 (41.1%). Mean age was 71 years (range 47-86). Mean PSA was 10.4 ng/ml (range 6-20). The median radiotherapy dose was 74 Gy, with mean doses of 72.5 Gy (FIR), 73.4 Gy (MIR), and 72.8 Gy (UIR). Most patients (88%) received ADT for a median of 7.1 months. By risk group (FIR, MIR, UIR), ADT rates were, respectively, 88.9, 86.5, and 86.9%. Only patients with ≥ 24 months of follow-up post-EBRT were included in the survival analysis (n = 1294). At a median follow-up of 52 months (range 24-173), respective 5- and 10-year outcomes were: OS 93.6% and 79%; BRFS 88.9% and 71.4%; DFS 96.1% and 89%; CSS 98.9% and 94.6%. Complication rates (≥ grade 3) were: acute genitourinary (GU) 2%; late GU 1%; acute gastrointestinal (GI) 2%; late GI 1%. There was no significant association between risk group and BRFS or OS. However, patients with favourable-risk disease had significantly better 5- and 10-year DFS than patients with UIR: 98.7% vs. 92.4% and 92% vs. 85.8% (p = 0.0005). CSS was significantly higher (p = 0.0057) in the FIR group at 5 (99.7% vs. 97.3%) and 10 years (96.1% vs. 93.4%). On the multivariate analyses, the following were significant predictors of survival: ADT (BRFS and DFS); dose ≥ 74 Gy (BRFS); age (OS).

CONCLUSIONS

This is the first nationwide study in Spain to report long-term outcomes of patients with intermediate-risk PCa treated with EBRT. Survival outcomes were good, with a low incidence of both acute and late toxicity. Patients with unfavourable risk characteristics had significantly lower 5- and 10-year disease-free survival rates. ADT and radiotherapy dose ≥ 74 Gy were both significant predictors of treatment outcomes.

Physical activity and frailty as indicators of cardiorespiratory reserve and predictors of surgical prognosis: General and digestive surgery population characterization

INTRODUCTION

Frailty and low physical activity and cardiorespiratory reserve are related to higher perioperative morbimortality. The crucial step in improving the prognosis is to implement specific measures to optimize these aspects. It is critical to know the magnitude of the problem in order to implement preoperative optimization programmes.

OBJECTIVE

To characterize surgical population in a university hospital.

METHODS

All patients undergoing preoperative evaluation for abdominal surgery with admission were prospectively included during a 3-month period. Level of physical activity, functional capacity, frailty and emotional state were assessed using score tests. Additionally, physical condition was evaluated using 5 Times Sit-to-Stand Test. Demographic, clinical and surgical data were collected.

RESULTS

One hundred and forty patients were included (60±15yr-old, 56% male, 25% ASA III or IV). Forty-nine percent of patients were proposed for oncologic surgery and 13% of which had received neoadjuvant treatment. Seventy percent of patients presented a low functional capacity and were sedentary. Eighteen percent of patients were considered frail and more than 50% completed the 5 Times Sit-to-Stand Test at a higher time than the reference values adjusted to age and sex. Advanced age, ASA III/IV, sedentarism, frailty and a high level of anxiety and depression were related to a lower functional capacity.

CONCLUSIONS

The surgical population of our area has a low functional reserve and a high index of sedentary lifestyle and frailty, predictors of postoperative morbidity. It is mandatory to implement preoperative measures to identify population at risk and prehabilitation programmes, considered highly promising preventive interventions towards improving surgical outcome.

Adjuvant versus salvage radiotherapy in prostate cancer: multi-institutional retrospective analysis of the Spanish RECAP database

PURPOSE

To compare adjuvant radiotherapy (ART) to salvage radiotherapy (SRT) after radical prostatectomy (RP) in a cohort of prostate cancer (PCa) patients. The primary aim was to comparatively assess 2- and 5-year biochemical relapse-free survival (BRFS). A secondary aim was to identify predictors of survival.

PATIENTS AND METHODS

Data were acquired from the RECAP database, a population-based prostate cancer registry in Spain. Inclusion criteria included RP (with or without lymphadenectomy) followed by ART or SRT. A total of 702 patients were analyzed. Pre-RT PSA values (>0.5 vs. ≤0.5 ng/ml), pathological stage (T1-2 vs. T3-4), post-surgical Gleason score (≤7 vs. 8-10), margin status (positive vs. negative), hormonal treatment (yes vs. no), and RT dose (≤66 Gy vs. >66 Gy) were evaluated to assess their impact on BRFS.

RESULTS

The mean patient age in the ART and SRT groups, respectively, was 64 years (range 42-82) and 64.8 years (range 42-82). Median follow-up after RT in the whole sample was 34 months (range 3-141). A total of 702 patients were included: 223 (31.8%) received ART and 479 (68.2%) SRT. BRFS rates (95% CI) in the ART and SRT groups at months 24 and 60 were, respectively: 98.1% (95.9-100.0%) vs. 91.2% (88.2-94.2%) and 84.5% (76.4-92.6%) vs. 74.0% (67.4-80.7%) (p = 0.004). No significant differences in OS were observed (p = 0.053). The following variables were significant predictors of biochemical recurrence in the SRT group: (1) positive surgical margin status (p = 0.049); (2) no hormonotherapy (p = 0.03); (3) total prostate dose ≤66 Gy (p = 0.004); and pre-RT PSA ≥0.5 ng/ml (p = 0.013).

CONCLUSIONS

This is the first nationwide study in Spain to evaluate a large cohort of PCa patients treated with RP followed by postoperative RT. ART yielded better 2- and 5-year BRFS rates, although OS was equivalent. These findings are consistent with most other published studies and support ART in patients with adverse prognostic characteristics after radical prostatectomy. Prospective trials are needed to compare immediate ART to early SRT to better determine their relative benefits.

Infrastructures, treatment modalities, and workload of radiation oncology departments in Spain with special attention to prostate cancer

AIM

The purpose of the study was to describe infrastructures, treatment modalities, and workload in radiation oncology (RO) in Spain, referred particularly to prostate cancer (PC).

METHODS

An epidemiologic, cross-sectional study was performed during 2008-2009. A study-specific questionnaire was sent to the 108 RO-registered departments.

RESULTS

One hundred and two departments answered the survey, and six were contacted by telephone. Centers operated 236 treatment units: 23 (9.7 %) cobalt machines, 37 (15.7 %) mono-energetic linear accelerators, and 176 (74.6 %) multi-energy linear accelerators. Sixty-one (56.4 %) and 33 (30.5 %) departments, respectively, reported intensity-modulated radiation therapy (IMRT) and image-guided RT (IGRT) capabilities; three-dimensional-conformal RT was used in 75.8 % of patients. Virtual simulators were present in 95 departments (88.0 %), 35 use conventional simulators. Fifty-one departments (47.2 %) have brachytherapy units, 38 (35.2 %) perform prostatic implants. Departments saw a mean of 24.9 new patients/week; the number of patients treated annually was 102,054, corresponding to 88.4 % of patients with a RT indication. In 56.5 % of the hospitals, multidisciplinary teams were available to treat PC.

CONCLUSIONS

Results provide an accurate picture of current situation of RO in Spain, showing a trend toward the progressive introduction of new technologies (IMRT, IGRT, brachytherapy).

Exploration of 19 serotoninergic candidate genes in adults and children with attention-deficit/hyperactivity disorder identifies association for 5HT2A, DDC and MAOB

Attention-deficit/hyperactivity disorder (ADHD) is a common psychiatric disorder in which different genetic and environmental susceptibility factors are involved. Several lines of evidence support the view that at least 30% of ADHD patients diagnosed in childhood continue to suffer the disorder during adulthood and that genetic risk factors may play an essential role in the persistence of the disorder throughout lifespan. Genetic, biochemical and pharmacological studies support the idea that the serotonin system participates in the etiology of ADHD. Based on these data, we aimed to analyze single nucleotide polymorphisms across 19 genes involved in the serotoninergic neurotransmission in a clinical sample of 451 ADHD patients (188 adults and 263 children) and 400 controls using a population-based association study. Several significant associations were found after correcting for multiple testing: (1) the DDC gene was strongly associated with both adulthood (P=0.00053; odds ratio (OR)=2.17) and childhood ADHD (P=0.0017; OR=1.90); (2) the MAOB gene was found specifically associated in the adult ADHD sample (P=0.0029; OR=1.90) and (3) the 5HT2A gene showed evidence of association only with the combined ADHD subtype both in adults (P=0.0036; OR=1.63) and children (P=0.0084; OR=1.49). Our data support the contribution of the serotoninergic system in the genetic predisposition to ADHD, identifying common childhood and adulthood ADHD susceptibility factors, associations that are specific to ADHD subtypes and one variant potentially involved in the continuity of the disorder throughout lifespan.

Calidad de vida relacionada con la salud en pacientes con diabetes mellitus tipo 2

BACKGROUND

To evaluate the impact of diabetes mellitus type 2 on health related quality of life.

METHODS

Cross-sectional study. Site: a basic health zone of the Foral Community of Navarre (12,200 inhabitants). Selection through simple random sampling (n=95) of the universe of patients diagnosed with diabetes mellitus type 2 of our basic health zone (n=655). Methods: Health Related Quality of Life evaluated with generic questionnaires SF-36 and EQ-5D; comparison of the general population samples carried out in Spain (SF-36), general population y>65 years of Navarre and Spanish diabetic population (EQ-5D).

RESULTS

The diabetic patients have a tendency to show results lower than the general population in the following health concepts of the SF-36: "Physical Function" (76.6 +/- 27.2 SD), "Bodily Pain" (73.7 +/- 26.2 SD) , "General Health" (54.7 +/- 22.4 SD), "Social Function" (84.2 +/- 21.7 SD), "Role Emotional" (84.7 +/- 28.9 SD). Comparing the data with the general population >60 years, only two health concepts -"General Health" and "Role Emotional"- are equal to the reference values. With respect to the rates of respondents to some problem in the dimensions of the EQ-5D, the "Anxiety/Depression" dimension is outstanding with 43%. The value of the analogical visual scale in the diabetic patients is 64.6.

CONCLUSIONS

This study increases the evidence that diabetes mellitus type 2 is related to a worse perception of quality of life related to health. The impact of certain diseases on the patients should not be measured only through the quantification of objective clinical parameters (such as morbidity or mortality).

[Stroke risk factors. Population case-control study in the Foral Community of Navarre]

BACKGROUND

To determine the prevalence of different risk factors in patients with cerebrovascular disease of a population in the Foral Community of Navarre, and to compare this with a control group with the same characteristics.

PATIENTS AND METHODS

Population-based case-control study of a basic health zone (12,200 inhabitants). We included 91 patients, diagnosed with the first episode of cerebrovascular disease (1999-2003), and 182 controls (2 per case), paired by age and sex in the same time period.

RESULTS

The estimation of the incidence of cerebrovascular disease in our series is between 160 and 190 cases/100,000 inhabitants and year. The prevalence of arterial hypertension in the cerebrovascular disease group is 75%; 25% have previously suffered a transient ischemic attack and 31% had atrial fibrillation. Other vascular risk factors such as diabetes or hyperlipidaemia are present in 33% and 38%, respectively. Other risk factors are smoking (25%), ischemic cardiopathy (14%) and family antecedents of cerebrovascular disease (21.3%). An association has been found between cerebrovascular disease and arterial hypertension (OR=2.2; 95% CI = 1.2-4.0), personal antecedent of transient ischemic attack (OR=4.0; 95% CI 1.9-8.5), atrial fibrillation (OR=2.8; 95% CI 1.4-5.3), diabetes mellitus (OR=2.5; 95% CI 1.3-4-6).

CONCLUSIONS

The results obtained on a population basis - not only a hospital basis - will help us to obtain a more precise understanding of the aetiopathogeny of cerebrovascular disease. The results observed for arterial hypertension, diabetes mellitus and hyperlipidaemia, since they are modifiable risk factors; underline the importance of primary prevention. Similarly, such measures should be strengthened in the subjects with atrial fibrillation. The association with prior diagnosis of transient ischemic attack strengthens the need for adjusting the secondary prevention measures in this group of patients.

Situación cognitiva como condicionante de fragilidad en el anciano: Perspectiva desde un centro de salud

AIM

To determine the influence of the cognitive state on the presence of different frailty factors in the elderly.

METHODS

Study of an outpatient elderly population with chronic diseases (resident at home or institutionalised), the presence of different frailty risk factors and their relation to cognitive state (measured using the mini-mental state examination-MEC).

RESULTS

Study of 147 elderly people with an average age of 71.4 years and a similar proportion of men (74; 50.3%) and women (73; 49.7%). Thirty-four subjects (23.1%) institutionalised in residences. The percentage of patients showing cognitive impairment (MEC<24 points) is 12.9% (19 cases). Presence of frailty risk factors: low social support: 7.5% (11); falls: 17% (25); urinary incontinence: 18.4% (27); depression: 13.6% (20); anxiety-insomnia: 29.9% (44); hospitalisation-readmissions: 21.8% (32); multiple medications (>3 medicines): 53.7% (79); pluripathology (> or =3 diseases): 36.1% (53). The frailty factors that have a significant relation in patients with cognitive impairment (MEC<24) are falls [OR=59.5 (CI 95%=14.7-240.6)] (p<0.0001), urinary incontinence [OR=31.2 (8.9-109.1)] (p<0.0001), hospitalisation-readmissions [OR=32.9 (8.6-125.8)] (p<0.0001) and depression [OR=7.8 (2.5-23.5)] (p<0.0001). With respect to scoring on the MEC by percentiles, the risk factors that showed a tendency of lineal appearance are falls (p<0.0001), urinary incontinence (p<0.0001), hospitalisation-readmissions (p<0.0001) and pluripathology (p=0.002).

CONCLUSIONS

Cognitive impairment marks the appearance in a significant form of frailty factors in the elderly, such as falls, urinary incontinence, hospitalisation-readmissions and depression. This relation is not only appreciable in patients with an established cognitive impairment (MEC<24 points), but there is also a trend to appear as this impairment progresses, with a statistical relation for falls, urinary incontinence, hospitalisation-readmissions and pluripathology.

[Influence of socio-health variables on the cognitive state of mind of the geriatric patients of a health centre]

BACKGROUND

To determine the influence of age, education, admission in nursing homes and chronic diseases (arterial hypertension, diabetes, hyperlipidaemia, anxiety and depression) on the cognitive state of the population over 65 years of age.

MATERIAL AND METHODS

A study was made of a geriatric outpatient population (patients living at home or institutionalised) with chronic diseases, who showed cognitive deterioration and depressive symptoms. The cognitive mini-exam (CME) and the geriatric depression scale (Yesavage) were administered.

RESULTS

One hundred and forty-seven patients participated, with an average age of 71.4 years and a similar proportion of men (74; 50.3%) and women (73; 49.7%). Thirty-four subjects (23.1%) were living in nursing homes. The most prevalent diseases were hypertension (50%), anxiety-insomnia (30%), diabetes (22%), arthrosis (22%), depression (13%) and hypercholesterolaemia (12%). Half of the patients (79; 53.7%) were following treatment with more than three medicines; 60 (40.6%) with between two and three medicines, and only 8 (5.5%) were taking no medication. The percentage of subjects living in an institution increased with age. The consumption of medicines was also higher amongst the more elderly. The scores on the cognitive scale (CME) decrease with age and were also lower amongst subjects who live in institutions (above all if they suffer from depression). The patients who took psychotropics had lower scores on the CME. Although performances on the CME are lower amongst subjects with a low level of education, the differences do not reach statistical significance. The presence of hyperlipidaemia also decreased the results of the CME.

CONCLUSIONS

The socio-health factors that altered performance negatively in the cognitive mini-exam are advanced age and institutionalisation. These results are also significantly influenced by depressive disease, hyperlipidaemia and the consumption of medicines that affect the cognitive state.

Validation of the 13c-urea breath test for the initial diagnosis of helicobacter pylori infection and to confirm eradication after treatment

OBJECTIVES

the breath test with 13C-urea (UBT) is a method widely used in Spain, but its diagnostic accuracy has not been evaluated in a clinical trial until now. Our objective was to validate the UBT (TAU-KIT) both as an initial diagnostic method for the detection of H. pylori infection and as a method to confirm eradication.

METHODS

a multi-centre study in 7 Spanish hospitals was performed. A group of dyspeptic patients who had not previously received eradication treatment was included, and a second group of patients with gastric ulcer or upper gastrointestinal bleeding due to peptic ulcer was also included (eradication of H. pylori was confirmed 6 to 8 weeks after treatment completion with omeprazole, clarithromycin and amoxycillin). In both groups an endoscopy was performed with biopsies for histology and rapid urease test. Patients were considered infected if both tests yielded positive results, and not infected when both tests were negative. The UBT 13C-urea (TAU-KIT, Isomed S.L., Madrid, Spain) was performed with citric acid and 100 mg of 13C-urea. The pathologist and persons responsible for endoscopy, urease test and UBT were all unaware of the results from the other diagnostic methods.

RESULTS

in the pre-treatment group (36 patients) the prevalence of H. pylori was 72%, the area under the ROC curve for the diagnosis of infection with the UBT was 0.99, and the best cut-off point was 5 units, with the following results: sensitivity= 96% (95% CI = 81-99%), specificity= 100% (69-100%), positive predictive value (PPV) = 100% (87-100%), negative predictive value (NPV) = 92% (59-100%), likelihood ratio (LR) + = infinity, and LR- = 0.04. In the post-treatment group (85 patients) the prevalence of H. pylori was 16%, the area under the ROC curve was 0.99, and the best cut point was 4.6, with the following results: sensitivity= 100% (77-100%), specificity = 97% (90-99%), PPV = 88% (62-98%), NPV = 100% (95-100%), LR+ = 35, and LR- = 0.

CONCLUSION

UBT provides excellent accuracy both for the initial diagnosis of H. pylori infection and to confirm eradication after treatment.