Improving low-value clinical practices in Murcia: a healthcare management area in Spain.

The 'do not do' (DND) movement looks for improving patient safety and reducing health spending by decreasing the prevalence of unnecessary clinical practices through building and launching 'do not do' recommendations, although the impact is generally low. The objective of this study is to improve the quality of care and safety of patients assigned to a health management area by reducing the prevalence of DND practices. Quasi-experimental before and after study carried out in a Spanish health management area of 264 579 inhabitants, 14 primary care teams, and a 920-bed third level reference hospital. The study included the measurement of a set of 25 valid and reliable indicators on DND prevalence from different clinical areas previously designed, considering acceptable prevalence values of less than 5%. For those indicators that exceeded this value, a bunch of interventions was implemented: (i) inclusion in the annual objectives of the clinical units involved; (ii) discussion of results in a general clinical session; (iii) educational outreach visits to the clinical units involved; and (iv) detailed feedback reports. A second evaluation was subsequently carried out. In the first evaluation, 12 DNDs (48%) showed prevalence values below 5%. In the second evaluation, nine DND of the remaining 13 (75%) improved results, reaching five of them (42%) prevalence values below 5%. Thus, a total of 17 of the 25 DNDs initially evaluated (68%) achieved this goal. Reducing the prevalence of low-value clinical practices in a healthcare organization makes it necessary to turn them into easily measurable indicators and carry out multicomponent interventions. Among these, it seems essential that the professionals involved are informed and that training activities are carried out on-site. Improvement cycles are emerging as a useful tool to do this.

Incidence, and natural history of inflammatory bowel disease in Castilla y León: Prospective and multicenter epidemiological study. / Incidencia e historia natural de la enfermedad inflamatoria intestinal en Castilla y León: estudio prospectivo, multicéntrico y poblacional.

INTRODUCTION: The incidence of inflammatory bowel disease (IBD) is increasing worldwide. OBJECTIVES: To evaluate the incidence of IBD in Castilla y León describing clinical characteristics of the patients at diagnosis, the type of treatment received and their clinical course during the first year. MATERIALS AND METHODS: Prospective, multicenter and population-based incidence cohort study. Patients aged >18 years diagnosed during 2017 with IBD (Crohn's disease [CD], ulcerative colitis [UC] and indeterminate colitis [IC]) were included from 8 hospitals in Castilla y León. Epidemiological, clinical, and therapeutic variables were registered. The global incidence and disease incidence were calculated. RESULTS: 290 patients were diagnosed with IBD (54.5% UC, 45.2% CD, and 0.3% IC), with a median follow-up of 9 months (range 8-11). The incidence rate of IBD in Castilla y Leon in 2017 was 16.6 cases per 10,000 inhabitants-year (9/105 UC cases and 7.5/105 CD cases), with a UC/CD ratio of 1.2:1. Use of systemic corticosteroids (47% vs 30%; P=.002), immunomodulatory therapy (81% vs 19%; P=.000), biological therapy (29% vs 8%; P=.000), and surgery (11% vs 2%; p=.000) were significatively higher among patients with CD comparing with those with UC. CONCLUSIONS: The incidence of patients with UC in our population increases while the incidence of patients with CD remains stable. Patients with CD present a worse natural history of the disease (use of corticosteroids, immunomodulatory therapy, biological therapy and surgery) compared to patients with UC in the first year of follow-up.

Efficacy and safety of cold versus hot snare polypectomy for small (5-9 mm) colorectal polyps: a multicenter randomized controlled trial.

BACKGROUND: Resection techniques for small polyps include cold snare polypectomy (CSP) and hot snare polypectomy (HSP). This study compared CSP and HSP in 5-9 mm polyps in terms of complete resection and adverse events. METHODS: This was a multicenter, randomized trial conducted in seven Spanish centers between February and November 2019. Patients with ≥ 1 5-9 mm polyp were randomized to CSP or HSP, regardless of morphology or pit pattern. After polypectomy, two marginal biopsies were submitted to a pathologist who was blinded to polyp histology. Complete resection was defined as normal mucosa or burn artifacts in the biopsies. Abdominal pain was only assessed in patients without < 5 mm or > 9 mm polyps. RESULTS: 496 patients were randomized: 237 (394 polyps) to CSP and 259 (397 polyps) to HSP. Complete polypectomy rates were 92.5 % with CSP and 94.0 % with HSP (difference 1.5 %, 95 % confidence interval -1.9 % to 4.9 %). Intraprocedural bleeding occurred during three CSPs (0.8 %) and seven HSPs (1.8 %) (P = 0.34). One lesion per group (0.4 %) presented delayed hemorrhage. Post-colonoscopy abdominal pain presented similarly in both groups 1 hour after the procedure (CSP 18.8 % vs. HSP 18.4 %) but was higher in the HSP group after 5 hours (5.9 % vs. 16.5 %; P = 0.02). A higher proportion of patients were asymptomatic 24 hours after CSP than after HSP (97 % vs. 86.4 %; P = 0.01). CONCLUSIONS: We observed no differences in complete resection and bleeding rates between CSP and HSP. CSP reduced the intensity and duration of post-colonoscopy abdominal pain.

Capacity of adherence, invasion and intracellular survival of Streptococcus uberis biofilm-forming strains.

AIM: Nine Streptococcus uberis strains with different biofilm-forming profiles in relation to their capacity of adherence and invasion to MAC-T cell lines were examined. Additionally, virulence genes were also linked to adherence and invasion. METHODS AND RESULTS: All S. uberis were able to adhere and invade the cells at different levels. UB56 strain showed the highest percentage of internalization (3.65%) and presented a moderate level of adhesion (4.6 × 106 ). In contrast, UB152, the most adherent strain (8.7 × 106 ) showed a low capacity to internalize (0.65%). Eight strains were able to persist intracellularly over 96 h regardless of their adherence or invasion level. Statistical analysis between biofilm-forming ability and the adhesion capacity showed no significant differences. Presence of virulence genes involved in the adhesion process (gapC, hasABC, lbp, pauA and sua) showed that the strains harboured different genes and seven patterns could be observed. CONCLUSION: Statistical analysis showed no correlation between the virulence gene patterns and the adhesion capacity or the percentage of internalization. Biofilm-forming ability did not influence the invasion capacity. Likewise, adherence and invasion capacity may be strain dependent. SIGNIFICANCE AND IMPACT OF THE STUDY: Findings from this study provide new insights on biofilm and invasion capacity of S. uberis strains. Results could help to design adequate control strategies.

High incidence of NLRP3 somatic mosaicism in patients with chronic infantile neurologic, cutaneous, articular syndrome: results of an International Multicenter Collaborative Study.

OBJECTIVE: Chronic infantile neurologic, cutaneous, articular (CINCA) syndrome, also known as neonatal-onset multisystem inflammatory disease (NOMID), is a dominantly inherited systemic autoinflammatory disease. Although heterozygous germline gain-of-function NLRP3 mutations are a known cause of this disease, conventional genetic analyses fail to detect disease-causing mutations in ∼40% of patients. Since somatic NLRP3 mosaicism has been detected in several mutation-negative NOMID/CINCA syndrome patients, we undertook this study to determine the precise contribution of somatic NLRP3 mosaicism to the etiology of NOMID/CINCA syndrome. METHODS: An international case-control study was performed to detect somatic NLRP3 mosaicism in NOMID/CINCA syndrome patients who had shown no mutation during conventional sequencing. Subcloning and sequencing of NLRP3 was performed in these mutation-negative NOMID/CINCA syndrome patients and their healthy relatives. Clinical features were analyzed to identify potential genotype-phenotype associations. RESULTS: Somatic NLRP3 mosaicism was identified in 18 of the 26 patients (69.2%). Estimates of the level of mosaicism ranged from 4.2% to 35.8% (mean ± SD 12.1 ± 7.9%). Mosaicism was not detected in any of the 19 healthy relatives (18 of 26 patients versus 0 of 19 relatives; P < 0.0001). In vitro functional assays indicated that the detected somatic NLRP3 mutations had disease-causing functional effects. No differences in NLRP3 mosaicism were detected between different cell lineages. Among nondescript clinical features, a lower incidence of mental retardation was noted in patients with somatic mosaicism. Genotype-matched comparison confirmed that patients with somatic NLRP3 mosaicism presented with milder neurologic symptoms. CONCLUSION: Somatic NLRP3 mutations were identified in 69.2% of patients with mutation-negative NOMID/CINCA syndrome. This indicates that somatic NLRP3 mosaicism is a major cause of NOMID/CINCA syndrome.

Usefulness of an intensive bowel cleansing strategy for repeat colonoscopy after preparation failure.

BACKGROUND: No consensus exists regarding the optimal bowel preparation regimen for patients with poor bowel cleansing at a previous colonoscopy. OBJECTIVE: We investigated the usefulness of an intensive cleansing regimen for repeat colonoscopy after previous failure of bowel preparation. DESIGN AND SETTING: A prospective observational study was performed in patients undergoing colonoscopy at a university-based, tertiary referral hospital. PATIENTS AND INTERVENTION: Outpatients with inadequate preparation at an index colonoscopy were offered a repeat colonoscopy and instructed to follow an intensive preparation regimen consisting of a low-fiber diet for 72 hours, liquid diet for 24 hours, bisacodyl (10 mg) in the evening of the day before the colonoscopy, and a split dose of polyethylene glycol (1.5 L in the evening before and 1.5 L in the morning on the day of the colonoscopy). MAIN OUTCOME MEASURES: The adequacy of bowel cleansing was assessed according to the Boston Bowel Preparation Scale (0 or 1 on any colon segment = inadequate bowel preparation). Procedural variables, detection rates for polyps and adenomas, compliance, and tolerability of the regimen were assessed. Satisfaction with the regimen was assessed with a 10-point visual analog scale. RESULTS: Of 83 patients with inadequate bowel preparation at colonoscopy, 51 underwent a second colonoscopy and were analyzed; 46 patients (90.2%) had adequate bowel cleansing at the second colonoscopy, with a mean (SD) total Boston Bowel Preparation Scale score of 7.43 (1.5) and scores of 2.31 (0.6) for the right colon, 2.49 (0.6) for the transverse colon, and 2.63 (0.6) for the left colon. Polyps, flat lesions, or flat lesions proximal to the splenic flexure were found in significantly more patients at the second colonoscopy than at the index colonoscopy. The global satisfaction score was 6.6 (2.7). LIMITATIONS: The study was limited because of its open observational design, possible patient learning effect for bowel preparation at the repeat colonoscopy, and the inclusion of only outpatients. CONCLUSIONS: An intensive regimen consisting of a low-fiber diet, bisacodyl, and a split dose of polyethylene glycol can achieve good colon preparation with an improved detection rate for polyps and adenomas in most patients who have had poor bowel cleansing at a previous colonoscopy.

A somatic NLRP3 mutation as a cause of a sporadic case of chronic infantile neurologic, cutaneous, articular syndrome/neonatal-onset multisystem inflammatory disease: Novel evidence of the role of low-level mosaicism as the pathophysiologic mechanism underlying mendelian inherited diseases.

OBJECTIVE: Chronic infantile neurologic, cutaneous, articular syndrome (CINCA), also known as neonatal-onset multisystem inflammatory disease (NOMID), is a severe, early-onset autoinflammatory disease characterized by an urticaria-like rash, arthritis/arthropathy, variable neurologic involvement, and dysmorphic features, which usually respond to interleukin-1 blockade. CINCA/NOMID has been associated with dominant Mendelian inherited NLRP3 mutations. However, conventional sequencing analyses detect true disease-causing mutations in only approximately 55-60% of patients, which suggests the presence of genetic heterogeneity. We undertook the current study to assess the presence of somatic, nongermline NLRP3 mutations in a sporadic case of CINCA/NOMID. METHODS: Clinical data, laboratory results, and information on treatment outcomes were gathered through direct interviews. Exhaustive genetic studies, including Sanger method sequencing, subcloning, restriction fragment length polymorphism assay, and pyrosequencing, were performed. RESULTS: The patient's CINCA/NOMID was diagnosed based on clinical features (early onset of the disease, urticaria-like rash, knee arthropathy, and dysmorphic features). The patient has exhibited a successful response to anakinra within the last 28 months. Analysis of NLRP3 identified a novel heterozygous variant (p.D303H) that was detected in approximately 30-38% of circulating leukocytes. The absence of this variant in healthy controls and in the patient's parents suggested a de novo true disease-causing mutation. Additional analyses showed that this novel mutation was present in both leukocyte subpopulations and epithelial cells. CONCLUSION: Our findings identify the novel p.D303H NLRP3 variant in a Spanish patient with CINCA/NOMID as a new disease-causing mutation, which was detected as a somatic, nongermline mutation in hematopoietic and nonhematopoietic cell lineages. Our data provide new insight into the role of low-level mosaicism in NLRP3 as the pathophysiologic mechanism underlying cryopyrin-associated periodic syndrome.

Impact of the COVID-19 Pandemic on the Hospital: Inpatient's Perceived Quality in Spain.

Although the Coronavirus disease 2019 (COVID-19) pandemic has generated a large amount of studies, the patient-perceived quality of care (PQ) in this context is still not well known, so more studies intending to focus on this issue are strongly needed. This study assesses changes on PQ in patients hospitalized in Spain during the first month of the COVID-19 pandemic and investigates differences between those admitted for this cause and the rest a descriptive study using the "Net Promoters Score" and the hospital regular monitoring plan. Due to this point of view, ethical approval is not applicable. Four PQ dimensions (nurse, physician, and nurse assistant actions [NA], and discharge information [DI]) were measured in all COVID patients (57) and in a sample of non-COVID patients (60) discharged at home during the first month of the pandemic, and also compared with another sample (384) from an immediately previous period. The COVID patients scored worse (8.2) than non-COVID ones (9.0; P < .0001), especially in NA and DI, and were more likely to be detractors (odds ratio [OR]: 3.05, P < .0001) and less to be promoters (OR: 0.64, P < .05). Global and DI net promoters score values before the pandemic were higher than afterward. In conclusion, the COVID-19 pandemic negatively and significantly influenced the health care quality as perceived by inpatients, both in COVID and in non-COVID ones, but more intensely in the former. As a health care organization, this knowledge meant an opportunity from improvement and to be better qualified to face the pandemic.

[Clinical usefulness of troponin I in acute pulmonary embolism]. / Utilidad clínica de la troponina I en la tromboembolia pulmonar.

BACKGROUND: Troponin-I (cTp-I) is considered a sensitive biomarker of myocardial injury in acute pulmonary thromboembolism (PE) with prognosis implications, though abnormal levels vary among reports. PATIENTS AND METHODS: cTp-I was measured in consecutive patients objectively diagnosed of PE by means of pulmonary angiography made with helicoidal CT. Patients were classified radiologically as central or peripheral PE and hemodynamically as massive, submassive or non-massive according to the pulmonary vessel occluded and systolic blood pressure and ProBNP levels respectively. We checked also the delay in diagnosis (DD) and 30-days all-causes mortality rate. RESULTS: We evaluated 164 patients; the mean age was 70 (15) years, males: 76 (46%). Median DD was 5 [interquartile range (IQ) 12) days. Median cTp-I in patients with DD>5 was 0.003microg/L (IQ 0.072)microg/L while in patients with DD<5 was 0.05microg/L (IQ 0.096) (p<0.05). cTp-I higher than 0.5microg/L occurred in 11 (7%) patients. Levels of cTp-I higher than 0.03microg/L were associated with central PE, (AUROC 0.7059 CI95% 0.6643-0.7475, sensitivity 0.75, specificity 0.69, PPV 0.75 and NPV 0.69) and massive and submassive PE (AUROC 0.7685, CI95% 0.7288-0.8082 sensitivity 0.86, specificity 0.66, PPV 0.72 and NPV 0.82), but they were not associated with mortality (AUROC 0.5394). In a multivariate analysis cTp-I did not show to be an independent predictor of central, massive and submassive PE or all causes death. CONCLUSIONS: In this study cTp-I was not a proper biomarker of the size of pulmonary vessel occluded, the degree of hemodynamic derangement or short-term mortality. The delay in diagnosis could influence the usefulness of cTp-I.

[Luetic hepatitis. An emerging entity]. / Hepatitis luética. Una entidad emergente.

Liver involvement is unusual in the course of syphilitic infection. We present four cases of luetic hepatitis diagnosed at our hospital in the last 5 years. One patient was coinfected with hepatitis B virus and another patient was coinfected with hepatitis C virus and HIV. The presence of maculopapular skin lesions in palmoplantar distribution, as well as serological confirmation, were decisive for the diagnosis of syphilitic hepatitis, allowing early antibiotic therapy to be established, with clinical and analytical improvement in all patients. Luetic hepatitis should be considered in patients with risky sexual behavior, skin lesions and altered liver function tests with a predominance of cholestasis, despite the finding of other, more frequent, liver diseases, given that these entities may be concurrent. Early diagnosis of syphilis leads to effective treatment of the patient and to epidemiological control of the infection.

Asociación de obesidad general y abdominal con hipertensión, dislipemia y presencia de prediabetes en el estudio PREDAPS / Association of general and abdominal obesity with hypertension, dyslipidemia and prediabetes in the PREDAPS study

Introducción y objetivos: Algunas medidas antropométricas muestran mayor capacidad que otras para discriminar la presencia de factores de riesgo cardiovascular. Este trabajo estima la magnitud de la asociación de diversos indicadores antropométricos de obesidad con hipertensión, dislipemia y prediabetes (glucemia basal o glucohemoglobina alteradas). Métodos: Análisis transversal de la información recogida en 2.022 sujetos del estudio PREDAPS (etapa basal). Se definió obesidad general como índice de masa corporal ≥ 30 kg/m2 y obesidad abdominal con 2 criterios: a) perímetro de cintura (PC) ≥ 102 cm en varones/PC ≥ 88 cm en mujeres, y b) índice cintura/estatura (ICE) ≥ 0,55. La magnitud de la asociación se estimó mediante regresión logística. Resultados: La hipertensión arterial mostró la asociación más alta con la obesidad general en mujeres (OR = 3,01; IC95%, 2,24-4,04) y con la obesidad abdominal según el criterio del ICE en varones (OR = 3,65; IC95%, 2,66-5,01). La hipertrigliceridemia y los valores bajos de colesterol unido a lipoproteínas de alta densidad mostraron la asociación más alta con obesidad abdominal según el criterio del ICE en mujeres (OR = 2,49; IC95%, 1,68-3,67 y OR = 2,70; IC95%, 1,89-3,86) y la obesidad general en varones (OR = 2,06; IC95%, 1,56-2,73 y OR = 1,68; IC95%, 1,21-2,33). La prediabetes mostró la asociación más alta con obesidad abdominal según el criterio del ICE en mujeres (OR = 2,48; IC95%, 1,85-3,33) y con obesidad abdominal según el criterio del PC en varones (OR = 2,33; IC95%, 1,75-3,08). Conclusiones: Los indicadores de obesidad abdominal mostraron la mayor asociación con la presencia de prediabetes. La relación de los indicadores antropométricos con hipertensión y con dislipemia mostró resultados heterogéneos (AU)

Introduction and objectives: Some anthropometric measurements show a greater capacity than others to identify the presence of cardiovascular risk factors. This study estimated the magnitude of the association of different anthropometric indicators of obesity with hypertension, dyslipidemia, and prediabetes (altered fasting plasma glucose and/or glycosylated hemoglobin). Methods: Cross-sectional analysis of information collected from 2022 participants in the PREDAPS study (baseline phase). General obesity was defined as body mass index ≥ 30 kg/m2 and abdominal obesity was defined with 2 criteria: a) waist circumference (WC) ≥ 102 cm in men/WC ≥ 88 cm in women, and b) waist-height ratio (WHtR) ≥ 0.55. The magnitude of the association was estimated by logistic regression. Results: Hypertension showed the strongest association with general obesity in women (OR, 3.01; 95%CI, 2.24-4.04) and with abdominal obesity based on the WHtR criterion in men (OR, 3.65; 95%CI, 2.66-5.01). Hypertriglyceridemia and low levels of high-density lipoprotein cholesterol showed the strongest association with abdominal obesity based on the WHtR criterion in women (OR, 2.49; 95%CI, 1.68-3.67 and OR, 2.70; 95%CI, 1.89-3.86) and with general obesity in men (OR, 2.06; 95%CI, 1.56-2.73 and OR, 1.68; 95%CI, 1.21-2.33). Prediabetes showed the strongest association with abdominal obesity based on the WHtR criterion in women (OR, 2.48; 95%CI, 1.85-3.33) and with abdominal obesity based on the WC criterion in men (OR, 2.33; 95%CI, 1.75-3.08). Conclusions: Abdominal obesity indicators showed the strongest association with the presence of prediabetes. The association of anthropometric indicators with hypertension and dyslipidemia showed heterogeneous results (AU)

Rhizobacteria and their potential to control Fusarium verticillioides: effect of maize bacterisation and inoculum density.

Fusarium verticillioides is the most important seed transmitted pathogen that infects maize. It produces fumonisins, toxins that have potential toxicity for humans and animals. Control of F. verticillioides colonisation and systemic contamination of maize has become a priority area in food safety research. The aims of this research were (1) to characterise the maize endorhizosphere and rhizoplane inhabitant bacteria and Fusarium spp., (2) to select bacterial strains with impact on F. verticillioides growth and fumonisin B1 production in vitro, (3) to examine the effects of bacterial inoculum levels on F. verticillioides root colonisation under greenhouse conditions. Arthrobacter spp. and Azotobacter spp. were the predominant genera isolated from maize endorhizosphere and rhizoplane at the first sampling period, whilst F. verticillioides strains showed the greatest counts at the same isolation period. All F. verticillioides strains were able to produce fumonisin B1 in maize cultures. Arthrobacter globiformis RC5 and Azotobacter armeniacus RC2, used alone or in a mix, demonstrated important effects on F. verticillioides growth and fumonisin B1 suppression in vitro. Only Azotobacter armeniacus RC2 significantly reduced the F. verticillioides root colonisation at 10(6) and 10(7) CFU g(-1) levels under greenhouse conditions.

Hepatitis luética. Una entidad emergente / Luetic hepatitis. An emerging entity

La afectación hepática por sífilis es infrecuente. Se exponen 4 casos de hepatitis luética diagnosticados en los últimos 5 años. Uno presentaba coinfección por virus de la inmunodeficiencia humana y virus de la hepatitis C, y otro por virus de la hepatitis B. Las lesiones cutáneas maculopapulosas de extensión palmoplantar y la confirmación serológica fueron determinantes para llegar al diagnóstico. Ante el aumento de incidencia de las enfermedades de transmisión sexual, entre ellas la sífilis, es importante tener en cuenta el diagnóstico de hepatitis luética en aquellos pacientes que presentan hábitos sexuales de riesgo y alteración de pruebas de función hepática con predominio de colestasis, y no conviene descartarla a pesar del hallazgo de otras enfermedades hepáticas más frecuentes, dado que pueden coexistir. El diagnóstico precoz de la sífilis conduce a un tratamiento eficaz para el individuo y para el control epidemiológico de la infección(AU)

Liver involvement is unusual in the course of syphilitic infection. We present four cases of luetic hepatitis diagnosed at our hospital in the last 5 years. One patient was coinfected with hepatitis B virus and another patient was coinfected with hepatitis C virus and HIV. The presence of maculopapular skin lesions in palmoplantar distribution, as well as serological confirmation, were decisive for the diagnosis of syphilitic hepatitis, allowing early antibiotic therapy to be established, with clinical and analytical improvement in all patients. Luetic hepatitis should be considered in patients with risky sexual behavior, skin lesions and altered liver function tests with a predominance of cholestasis, despite the finding of other, more frequent, liver diseases, given that these entities may be concurrent. Early diagnosis of syphilis leads to effective treatment of the patient and to epidemiological control of the infection(AU)

Utilidad clínica de la troponina I en la tromboembolia pulmonar / Clinical usefulness of troponin I in acute pulmonary embolism

Fundamento: La troponina cardíaca I (cTnI) se considera un marcador sensible de daño miocárdico en la tromboembolia pulmonar (TEP) aguda con implicaciones pronósticas, aunque los valores considerados patológicos son variables. Pacientes y método: En pacientes consecutivos con TEP objetivamente demostrada por angiografía pulmonar con tomografía computarizada (TC) helicoidal se midieron los valores de la cTnI. Los pacientes se clasificaron radiológicamente como TEP central o periférica y se clasificaron hemodinámicamente como TEP masiva, submasiva o no masiva (según las cifras de presión arterial sistólica y pro-B de péptido natriurético). Se constató el retraso diagnóstico (RD) desde el inicio de la clínica y la mortalidad a los 30 días. Resultados: Se evaluaron 164 pacientes (edad media de 70 años [desviación estándar {DE} de 15] con 76 varones [46%]). El RD fue de 5 días (diferencia intercuartílica [DIQ] de 12) (mediana de la cTnI con RD superior a 5 días de 0,003¼g/l [DIQ de 0,103] y con RD inferior a 5 días de 0,05¼g/l [DIQ de 0,096]; p< 0,05). Un valor de la cTnI superior o igual a 0,5 ocurrió en 11 pacientes (7%).Resultados: Los valores de la cTnI superiores o iguales a 0,03¼g/l se asociaron a TEP central (AUC [area under the curve área bajo la curva ] ROC [receiver operating characterisric curva de eficacia diagnóstica ] de 0,7059; intervalo de confianza [IC] del 95%: 0,6643 a 0,7475; sensibilidad de 0,75; especificidad de 0,69; valor predictivo positivo [VPP] de 0,75, y valor predictivo negativo [VPP] de 0,69) y se asociaron a TEP masiva y submasiva (AUC ROC de 0,7685; sensibilidad de 0,86; especificidad de 0,66; VPP de 0,72, y VPN de 0,82), pero no a mortalidad (AUC ROC de 0,5394). Resultados: En el análisis de regresión logística, los valores de la cTnI no fueron predictores independientes de TEP central, de TEP masiva o submasiva ni de muerte a los 30 días

Background: Troponin-I (cTp-I) is considered a sensitive biomarker of myocardial injury in acute pulmonary thromboembolism (PE) with prognosis implications, though abnormal levels vary among reports. Patients and Methods: cTp-I was measured in consecutive patients objectively diagnosed of PE by means of pulmonary angiography made with helicoidal CT. Patients were classified radiologically as central or peripheral PE and hemodynamically as massive, submassive or non-massive according to the pulmonary vessel occluded and systolic blood pressure and ProBNP levels respectively. We checked also the delay in diagnosis (DD) and 30-days all-causes mortality rate. Results: We evaluated 164 patients; the mean age was 70 (15) years, males: 76 (46%). Median DD was 5 [interquartile range (IQ) 12) days. Median cTp-I in patients with DD>5 was 0.003¼g/L (IQ 0.072)¼g/L while in patients with DD<5 was 0.05¼g/L (IQ 0.096) (p<0.05). cTp-I higher than 0.5¼g/L occurred in 11 (7%) patients. Results: Levels of cTp-I higher than 0.03¼g/L were associated with central PE, (AUROC 0.7059 CI95% 0.6643 0.7475, sensitivity 0.75, specificity 0.69, PPV 0.75 and NPV 0.69) and massive and submassive PE (AUROC 0.7685, CI95% 0.7288 0.8082 sensitivity 0.86, specificity 0.66, PPV 0.72 and NPV 0.82), but they were not associated with mortality (AUROC 0.5394).Results: In a multivariate analysis cTp-I did not show to be an independent predictor of central, massive and submassive PE or all causes death. Conclusions: In this study cTp-I was not a proper biomarker of the size of pulmonary vessel occluded, the degree of hemodynamic derangement or short-term mortality. The delay in diagnosis could influence the usefulness of cTp-I