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1.
Nutr Metab Cardiovasc Dis ; 31(11): 3111-3121, 2021 10 28.
Artículo en Inglés | MEDLINE | ID: mdl-34531108

RESUMEN

BACKGROUND AND AIMS: To validate a set of indicators for monitoring the quality of care of patients with diabetes in 'real-life' practice through its relationship with measurable clinical outcomes and healthcare costs. METHODS AND RESULTS: A population-based cohort study was carried out by including the 20,635 patients, residents in the Lombardy Region (Italy), who in the year 2012 were newly taken-in-care for diabetes. Adherence with clinical recommendations (i.e., controls for glycated haemoglobin, lipid profile, urine albumin excretion and serum creatinine) was recorded during the first year after the patient was taken-in-care, and categorized according whether he/she complied with none or almost none (0 or 1), just some (2) or all or almost all (3 or 4) the recommendations, respectively denoted as poor, intermediate and high adherence. Short- and long-term complications of diabetes, and healthcare cost incurred by the National Health Service, were assessed during follow-up. Compared with patients with poor adherence, those with intermediate and high adherence respectively showed (i) a delay in outcome occurrence of 13 days (95% CI, -2 to 27) and 23 days (9-38), and (ii) a lower healthcare cost of 54 € and 77 €. In average, a gain of 18 Euros and 15 Euros for each day free from diabetic complication by increasing adherence respectively from poor to intermediate and from poor to high were observed. CONCLUSION: Close control of patients with diabetes through regular clinical examinations must be considered the cornerstone of national guidance, national audits, and quality improvement incentive schemes.


Asunto(s)
Diabetes Mellitus/diagnóstico , Diabetes Mellitus/terapia , Programas de Detección Diagnóstica/economía , Costos de la Atención en Salud , Programas Nacionales de Salud/economía , Cooperación del Paciente , Anciano , Análisis Químico de la Sangre/economía , Ahorro de Costo , Análisis Costo-Beneficio , Bases de Datos Factuales , Diabetes Mellitus/economía , Técnicas de Diagnóstico Oftalmológico/economía , Femenino , Humanos , Italia , Pruebas de Función Renal/economía , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Pronóstico , Factores de Tiempo
2.
Ann Surg ; 274(6): e548-e553, 2021 12 01.
Artículo en Inglés | MEDLINE | ID: mdl-31804397

RESUMEN

OBJECTIVE: Determine if routine ordering of postoperative day 1 (POD 1) serum laboratory tests after elective colorectal surgery are clinically warranted and valuable given the associated costs of these lab tests. SUMMARY OF BACKGROUND DATA: Routine postoperative serum laboratory tests are a part of many colorectal surgery order sets. Whether these protocolized lab tests represent cost-effective care is unknown. METHODS: Patients undergoing elective colorectal surgery between January 1, 2015 and December 31, 2017 at our institution were identified. The protocolized POD 1 lab tests obtained as part of the postoperative order set were reviewed to determine the rate of abnormal values and any intervention in response. Costs associated with protocolized laboratory testing were calculated using dollar amounts representing 2017 outpatient Medicare reimbursement. RESULTS: A total of 2252 patients were identified with 8205 total lab test values. Of these, only 4% were abnormal (3% of hemoglobin values, 6% of creatinine values, 3% of potassium of values, and 3% of glucose values), and only 1% were actively intervened upon. The total aggregate cost of the protocolized POD 1 laboratory tests in these years was $64,000 based on Medicare outpatient reimbursement dollars. CONCLUSIONS: Routine POD 1 lab tests after elective colorectal surgery are rarely abnormal, and they even less frequently require active intervention beyond rechecking. This results in increased resource utilization and cost of care without appreciable impact on clinical care, and is not cost-effective. Protocolized POD 1 laboratory testing should be replaced with clinically-based criteria to trigger serum laboratory investigations.


Asunto(s)
Análisis Químico de la Sangre/economía , Protocolos Clínicos , Colon/cirugía , Pruebas Diagnósticas de Rutina/economía , Procedimientos Quirúrgicos del Sistema Digestivo , Cuidados Posoperatorios/métodos , Recto/cirugía , Análisis Costo-Beneficio , Recuperación Mejorada Después de la Cirugía , Femenino , Humanos , Masculino , Persona de Mediana Edad
3.
J Stroke Cerebrovasc Dis ; 30(2): 105417, 2021 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-33307290

RESUMEN

OBJECTIVE: To investigate whether utilizing a LDL-direct laboratory test rather than a lipid panel to determine LDL-C as part of the inpatient stroke and TIA workup is more cost-effective to the patient and hospital system. A retrospective analysis was conducted on all patients admitted to UCSD La Jolla and Hillcrest Hospital and discharged with a final diagnosis of ischemic stroke or transient ischemic attack between 7/2016 and 6/2019. A cost-analysis was extrapolated based on the current cost of each test as provided by the UCSD hospital billing department as of June 2020. Patients started on a statin, who were not on one prior to admission, were also analyzed to highlight the importance of an accurate LDL-C on management of dyslipidemia. RESULTS: A total of 1245 patients were included in the study with 87% representing Ischemic strokes and 13% transient ischemic attacks. Over the three-year period, a total savings of $77,545 would be achieved if LDL-direct were used in place of a lipid-panel, representing an overall cost savings of 33%. Over the same time-frame, 536 (43%) patients were started on a statin that were not previously on one. CONCLUSIONS: Ordering a LDL-direct test should be considered over a lipid panel to evaluate LDL-C as it may prove to be the most cost effective approach to both the patient and Healthcare system.


Asunto(s)
Análisis Químico de la Sangre/economía , Dislipidemias/diagnóstico , Dislipidemias/economía , Costos de Hospital , Ataque Isquémico Transitorio/diagnóstico , Ataque Isquémico Transitorio/economía , Accidente Cerebrovascular Isquémico/diagnóstico , Lipoproteínas LDL/sangre , Biomarcadores/sangre , California , Ahorro de Costo , Análisis Costo-Beneficio , Dislipidemias/sangre , Dislipidemias/tratamiento farmacológico , Humanos , Inhibidores de Hidroximetilglutaril-CoA Reductasas/uso terapéutico , Pacientes Internos , Ataque Isquémico Transitorio/sangre , Ataque Isquémico Transitorio/tratamiento farmacológico , Accidente Cerebrovascular Isquémico/sangre , Accidente Cerebrovascular Isquémico/tratamiento farmacológico , Accidente Cerebrovascular Isquémico/economía , Valor Predictivo de las Pruebas , Estudios Retrospectivos
4.
Biosci Biotechnol Biochem ; 84(10): 1967-1974, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-32619142

RESUMEN

This work presents the development and validation of a simple, rapid, and cost-effective spectrophotometric method for quantitative analysis of uric acid in biological samples. The method relies upon uric acid-led reduction of Fe(III) to Fe(II) of sample/standard solutions which stoichiometrically engages ferrozine to form a magenta-colored complex. Different parameters including pH, metal and chelator concentrations, temperature, etc., were optimized for the maximum intensity and stability of the complex. The uric acid concentrations of synthetic/plasma solutions were determined by comparing the color intensity of Fe(ferrozine)3 2+ complex produced by test solution with the standard curve formed by known uric acid concentrations. The method was validated in accordance with ICH guidelines and subjected to human plasma analysis. The results obtained were compared with a reference (enzymatic) method which revealed that there was no significant difference between the two methods at 95% confidence level. The method is highly specific, precise, linear, accurate, and robust.


Asunto(s)
Análisis Químico de la Sangre/métodos , Colorimetría/métodos , Ferrozina/química , Hierro/química , Ácido Úrico/sangre , Análisis Químico de la Sangre/economía , Análisis Químico de la Sangre/normas , Color , Colorimetría/economía , Colorimetría/normas , Análisis Costo-Beneficio , Humanos , Concentración de Iones de Hidrógeno , Estándares de Referencia , Temperatura , Factores de Tiempo
5.
Vet Clin North Am Equine Pract ; 36(1): 1-14, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-31987706

RESUMEN

Clinical pathology results are only as good as the quality of samples and accompanying information submitted to the diagnostic laboratory. The frustration of nondiagnostic or equivocal test results can often be avoided by taking the time to follow sample handling and submission guidelines. This article discusses preanalytical errors that commonly affect the accuracy of hematology, chemistry, and cytology testing, and offers practical tips for preventing these errors and maximizing diagnostic yield.


Asunto(s)
Enfermedades de los Caballos/sangre , Enfermedades de los Caballos/diagnóstico , Caballos/sangre , Animales , Biopsia con Aguja Fina/economía , Biopsia con Aguja Fina/veterinaria , Análisis Químico de la Sangre/economía , Análisis Químico de la Sangre/veterinaria , Técnicas Citológicas/economía , Técnicas Citológicas/veterinaria , Hematología , Enfermedades de los Caballos/patología , Manejo de Especímenes , Estados Unidos
6.
Acta Clin Belg ; 75(3): 212-220, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-31007159

RESUMEN

Objectives: The most cost-effective newborn screening strategy for cystic fibrosis (CF) for Flanders, Belgium, is unknown. The aim of this study was to assess the cost-effectiveness of four existing newborn screening strategies for CF: IRT-DNA (immunoreactive trypsinogen, cystic fibrosis transmembrane conductance regulator (CFTR) gene mutation analysis), IRT-PAP (pancreatitis-associated protein), IRT-PAP-DNA, and IRT-PAP-DNA-EGA (extended CFTR gene analysis).Methods: Using data from published literature, the cost-effectiveness of the screening strategies was calculated for a hypothetical cohort of 65,606 newborns in Flanders, Belgium. A healthcare payer perspective was used, and the direct medical costs associated with screening were taken into account. The robustness of the model outcomes was assessed in sensitivity analyses.Results: The IRT-PAP strategy was the most cost-effective strategy in terms of costs per CF case detected (€9314 per CF case detected). The IRT-DNA strategy was more costly (€13,966 per CF case detected), but with an expected sensitivity of 93.4% also the most effective strategy, and was expected to detect 2.2 more cases of CF than the IRT-PAP strategy. The incremental cost-effectiveness ratio of IRT-DNA vs. IRT-PAP was €54,180/extra CF case detected. The IRT-PAP-DNA strategy and the IRT-PAP-DNA-EGA strategy were both strongly dominated by the IRT-PAP strategy.Conclusion: The IRT-PAP strategy was the most cost-effective strategy in terms of costs per CF case detected. However, the strategy did not fulfil the European Cystic Fibrosis Society guidelines for sensitivity and positive predictive value. Therefore, the more costly and more effective IRT-DNA strategy may be the most appropriate newborn screening strategy for Flanders.


Asunto(s)
Regulador de Conductancia de Transmembrana de Fibrosis Quística/genética , Fibrosis Quística/diagnóstico , Tamizaje Neonatal/economía , Proteínas Asociadas a Pancreatitis/metabolismo , Tripsinógeno/metabolismo , Bélgica , Análisis Químico de la Sangre/economía , Análisis Costo-Beneficio , Fibrosis Quística/genética , Fibrosis Quística/metabolismo , Análisis Mutacional de ADN/economía , Técnicas de Apoyo para la Decisión , Humanos , Recién Nacido , Tamizaje Neonatal/métodos , Sensibilidad y Especificidad
7.
Nat Commun ; 10(1): 4501, 2019 10 08.
Artículo en Inglés | MEDLINE | ID: mdl-31594931

RESUMEN

Non-specific symptoms, as well as the lack of a cost-effective test to triage patients in primary care, has resulted in increased time-to-diagnosis and a poor prognosis for brain cancer patients. A rapid, cost-effective, triage test could significantly improve this patient pathway. A blood test using attenuated total reflection (ATR)-Fourier transform infrared (FTIR) spectroscopy for the detection of brain cancer, alongside machine learning technology, is advancing towards clinical translation. However, whilst the methodology is simple and does not require extensive sample preparation, the throughput of such an approach is limited. Here we describe the development of instrumentation for the analysis of serum that is able to differentiate cancer and control patients at a sensitivity and specificity of 93.2% and 92.8%. Furthermore, preliminary data from the first prospective clinical validation study of its kind are presented, demonstrating how this innovative technology can triage patients and allow rapid access to imaging.


Asunto(s)
Análisis Químico de la Sangre/métodos , Neoplasias Encefálicas/diagnóstico , Triaje/métodos , Adulto , Anciano , Biopsia , Análisis Químico de la Sangre/economía , Encéfalo/diagnóstico por imagen , Encéfalo/patología , Neoplasias Encefálicas/sangre , Neoplasias Encefálicas/patología , Análisis Costo-Beneficio , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Estudios Retrospectivos , Sensibilidad y Especificidad , Espectroscopía Infrarroja por Transformada de Fourier/economía , Factores de Tiempo , Triaje/economía , Adulto Joven
8.
Therapie ; 74(6): 651-664, 2019 Dec.
Artículo en Francés | MEDLINE | ID: mdl-31301815

RESUMEN

AIM: Hypertension is a public health problem managed according to therapeutic strategies published in France by the Hauteautoritéde santé (HAS - French Health Authorities). For patients with resistant hypertension, related or not to a non-adherence, prescribers need to be sure the exposure is high enough to achieve the tensional target. Quantitative analysis of antihypertensive drugs in different biological matrices (blood/urine) is one possible solution. However, this involves determining the concentrations observed at standard doses and knowing how to interpret the measured concentrations. It is also necessary to identify medical laboratories that can assay antihypertensive drugs. This was the aim of our work. METHODS: The main antihypertensive drugs recommended by the HAS have been listed. For each of them, we looked for published steady-state plasma/serum concentrations and quantities excreted in the urine at usual dosages. In addition, the elimination half-life and linear pharmacokinetic profile were specified for each antihypertensive agent measured in plasma/serum. Pharmacology-Toxicology laboratories in France likely to carry out assays were identified. The time taken to report the result and the cost of the analysis were also specified. RESULTS: All of the afore-mentioned information has been collected and presented in a table. This can then be used to compare the plasma/serum concentration or the quantity measured in a patient's urine with the values reported in the literature. In cases where the blood sampling times differ between those of the patient and the published data, the patient's measured value is compared to the estimated value based on the published concentrations and pharmacokinetics. CONCLUSION: Interpretation of the plasma/serum/urinary value measured or estimated for an antihypertensive drug is a particularly interesting approach to determine if drug exposure is enough and a possible non-adherence. However, this activity is mostly carried out in hospital centres.


Asunto(s)
Antihipertensivos/farmacocinética , Antihipertensivos/uso terapéutico , Técnicas de Laboratorio Clínico/métodos , Monitoreo de Drogas/métodos , Hipertensión/tratamiento farmacológico , Antihipertensivos/análisis , Antihipertensivos/economía , Disponibilidad Biológica , Análisis Químico de la Sangre/economía , Análisis Químico de la Sangre/métodos , Servicios de Laboratorio Clínico/economía , Técnicas de Laboratorio Clínico/economía , Costos y Análisis de Costo , Relación Dosis-Respuesta a Droga , Monitoreo de Drogas/economía , Francia/epidemiología , Humanos , Hipertensión/epidemiología , Hipertensión/metabolismo , Cumplimiento de la Medicación , Planificación de Atención al Paciente , Urinálisis/economía , Urinálisis/métodos
9.
Clin Chim Acta ; 495: 556-561, 2019 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-31176646

RESUMEN

BACKGROUND AND AIM: The increase of the carbohydrate-deficient transferrin (CDT) as results of an heavy intake of alcohol for at least two weeks, is a well-known biochemical modification since the middle '70s. Notwithstanding the first commercial kit for the diagnosis of chronic alcohol abuse based on this biomarker was commercially accessible already thirty years ago, only expensive analytical methods are currently available for its determination. The present paper shows a new approach intrinsically sensitive and specific, based on a specific derivatization of transferrin, and not requiring sophisticated instrumentation. METHODS: The proposed procedure is based on a selective chelation of terbium (III) by transferrin followed by detection using an characteristic Fluorescence Resonance Transfer Energy (FRET) phenomenon (ex 298 nm - em 550 nm). RESULTS: The proposed procedure showed a limit of detection of 2.5 pmol/mL and a reproducibility intra-day and inter-days <15% and 20%, respectively. The results obtained analyzing 40 serum samples using the developed method, were compared with those obtained with HPLC-Vis and an R2 = 0.8854 was found. CONCLUSIONS: Considering its main features (low-cost, ease of operation, minimum need of instrumentation) the present method is suitable for application in screening contexts and in non-strictly regulated environments (e.g. clinical diagnosis) as well as in developing countries or remote areas.


Asunto(s)
Análisis Químico de la Sangre/economía , Costos y Análisis de Costo , Transferencia Resonante de Energía de Fluorescencia/economía , Transferrina/análogos & derivados , Estudios de Factibilidad , Humanos , Límite de Detección , Sistemas de Atención de Punto , Transferrina/análisis
10.
Rural Remote Health ; 19(2): 4934, 2019 04.
Artículo en Inglés | MEDLINE | ID: mdl-31035770

RESUMEN

INTRODUCTION: Hokianga Hospital is a small rural hospital in the far north of New Zealand serving a predominantly Maori population of 6500. The hospital, an integral part of a comprehensive primary healthcare service, provides continuous acute in-hospital and emergency care. Point-of-care (POC) biochemistry has been available at the hospital since 2010 but there is no onsite laboratory. This study looked at the impact of introducing a POC haematology benchtop analyser at Hokianga Hospital. METHODS: This was a mixed methods study conducted at Hokianga Hospital over 4 months in 2016. Quantitative and qualitative components and a cost-benefit analysis were combined using an integrative process. Part I: Doctors working at Hokianga Hospital completed a form before and after POC haematology testing, recording test indication, differential diagnosis, planned patient disposition and impact on patient treatment. Part II: Focus group interviews were conducted with Hokianga Hospital doctors, nurses and a cultural advisor. Part III: An analysis of cost versus tangible benefits was conducted. RESULTS: Part I: A total of 97 POC haematology tests were included in the study. Of these, 97% were undertaken in the setting of the acute clinical presentation and 72% were performed out of hours. The average number of differential diagnoses reduced from 2.43 pre-test to 1.7 post-test, (χ2 tests p<0.05). There was a significant reduction in the number of patients transferred and an increase in the number of patients discharged home (χ2 tests p<0.05). Part II: Three main themes were identified: impact on patient management, challenges and the commitment to 'make it work'. POC haematology had a positive impact on patient management and clinician confidence mainly by increasing diagnostic certainty. The main challenges related to the hidden costs of implementing the analyser and its associated quality assurance program in a remote-from-laboratory setting. Part III: Tangible cost-benefit analysis showed a clear cost saving to the health system as a whole. CONCLUSIONS: This is the first published study evaluating the impact of haematology POC testing on acute clinical care in a rural hospital with no onsite laboratory. Timely access to a full blood count POC improves clinical care and addresses inequity. There was an overall reduction in healthcare costs. The study highlighted the hidden costs of implementing POC systems and their associated quality assurance programs in a remote-from-laboratory context.


Asunto(s)
Análisis Químico de la Sangre/instrumentación , Análisis Costo-Beneficio , Pruebas Hematológicas/instrumentación , Hospitales Rurales/economía , Sistemas de Atención de Punto/economía , Análisis Químico de la Sangre/economía , Servicios Médicos de Urgencia , Grupos Focales , Pruebas Hematológicas/economía , Humanos , Nueva Zelanda , Calidad de la Atención de Salud , Encuestas y Cuestionarios
13.
Ann Clin Biochem ; 56(2): 298-301, 2019 03.
Artículo en Inglés | MEDLINE | ID: mdl-30450943

RESUMEN

BACKGROUND: Alkaline phosphatase isoenzyme analysis is an expensive and time-consuming laboratory test. We evaluated the effect of a locally derived screening algorithm for alkaline phosphatase isoenzyme requests on the number of alkaline phosphatase isoenzyme analyses performed, laboratory cost and patient care. METHOD: A total of 110 alkaline phosphatase isoenzyme analysis requests from the year 2015 were reviewed and subsequent alkaline phosphatase concentrations were monitored over a two-year period, to determine if the decision of performing/not performing alkaline phosphatase isoenzyme analysis, based on the algorithm, had an impact on patient care and laboratory cost. All alkaline phosphatase isoenzyme analysis requests with two consecutive elevated alkaline phosphatase concentrations (>upper limit of reference interval) were screened and, subject to the gamma glutamyl transferase being within the reference interval, either Bone alkaline phosphatase or 25 hydroxyvitamin D was measured depending on the age of the patient. RESULTS: Compliance with this algorithm led to the normalization of subsequent serum alkaline phosphatase in 97% of patients without requiring alkaline phosphatase isoenzyme analysis. The cost of performing Bone alkaline phosphatase and 25 hydroxyvitamin D in-house was £778.50, while the cost of performing alkaline phosphatase isoenzyme analysis would have been £3040. This resulted in a laboratory saving of £2261.50. CONCLUSIONS: Implementation of this algorithm led to a significant reduction in alkaline phosphatase isoenzyme analysis, without compromising patient care. Total savings could be increased if 25 hydroxyvitamin D was used as a first-line test, for all patients with an elevated alkaline phosphatase and a normal gamma glutamyl transferase regardless of age. This algorithm is cost-effective and can be implemented in laboratories with 25 hydroxyvitamin D assay.


Asunto(s)
Fosfatasa Alcalina/sangre , Análisis Químico de la Sangre/economía , Costos y Análisis de Costo , Anciano , Femenino , Humanos , Isoenzimas/sangre , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Tiempo
14.
J Chromatogr A ; 1576: 1-9, 2018 Nov 16.
Artículo en Inglés | MEDLINE | ID: mdl-30314683

RESUMEN

In this study, a new extraction medium based on a quite bio-compatible and bio-degradable deep eutectic solvent comprising choline chloride and phenylethanol (ChCl: Ph-ETOH) was simply and cheaply synthesized at room temperature. At the next step, it was effectively utilized at the service of air agitated-emulsification microextraction (AA-EME) of two major amphetamine-type stimulants (ATSs) in human plasma and pharmaceutical wastewater pursued by high performance liquid chromatography-ultraviolet detection (HPLC-UV). This safe, effective, and rapid enrichment process based on the new low-density DES was easily practicable via a homemade extraction cell possessing a narrow neck and with no extra demand the emulsifier intermediates. Statistical study of main parameters effects using central composite design (CCD) combined with desirability function (DF) demonstrated that pH 12, 250 µL of extraction solvent, 8 air agitation cycles, and 5% of salt amount resulted in maximum extraction efficiencies (63-66%) with DF value close to 0.98. Under optimal conditions, wide linear dynamic ranges (LDRs) of 15.0-2000 and 8.0-3000 ng mL-1 with the determination coefficients (R2s) close to 0.99 were obtainable for amphetamine and methamphetamine, respectively. Low limits of detection (LODs) as well as relative standard deviations (%RSDs, n = 3) were found to be 2.0-5.0 ng mL-1 and 5.7-7.8%, respectively. Also, enrichment factors (EFs) were quantitative in the span of 47-50. On the other hand, satisfactory and accurate assessment at low levels close to therapeutic and toxic domains in human plasma sample and pharmaceutical wastewater was successfully obtained.


Asunto(s)
Anfetamina/aislamiento & purificación , Análisis Químico de la Sangre/métodos , Microextracción en Fase Líquida/métodos , Metanfetamina/aislamiento & purificación , Solventes/química , Aguas Residuales/química , Análisis Químico de la Sangre/economía , Cromatografía Líquida de Alta Presión , Humanos , Interacciones Hidrofóbicas e Hidrofílicas , Límite de Detección , Microextracción en Fase Líquida/economía
15.
Ann Biol Clin (Paris) ; 76(5): 545-552, 2018 10 01.
Artículo en Francés | MEDLINE | ID: mdl-30226196

RESUMEN

Fever is a frequent reason for consultation in pediatric emergency departments and raises the question of biological and radiological examinations. Rapidly obtaining the result of C-reactive protein (CRP) level is essential in front of the steady increase of the number of visits. We carried out a prospective study within the pediatric emergency department of the University Hospital of Clermont-Ferrand from January to April 2017, in order to evaluate the interest of the capillary CRP in point of care (POCT). In two periods, 68 patients (28 controls without and 40 cases with capillary CRP assayed on a Afinion® AS100) with naked fever greater than 48 hours were included. After a study of the analytical performances of Afinion® and a verification of the homogeneity and the comparability of the two groups on clinical criteria (age, sex, duration of the fever, antibiotics treatment) and biological (values of CRP), the interest of the CRP in POCT was evaluated. In the POCT group, a significant drop in the median of the emergency room consultation time (60 (IQR 33-125) versus 180 (IQR 158-208) minutes), the number of biological acts by patient (1 (IQR 1-3) versus 7 (IQR 3-8)), the global cost of biological and radiological examinations per patient (5.4 (IQR 5.4-32.6) versus 153.8 (IQR 46.9-180.4) euros), and the cost of reagents spent by the laboratory per patient (5.2 (IQR 5.2-6.4) versus 33.2 (IQR 2.3-34.2) euros). Thus, in the context of a clinical-biological partnership, the use of CRP in POCT present a practical and an economic interest.


Asunto(s)
Análisis Químico de la Sangre/economía , Análisis Químico de la Sangre/métodos , Proteína C-Reactiva/análisis , Capilares/química , Urgencias Médicas , Adolescente , Estudios de Casos y Controles , Niño , Preescolar , Urgencias Médicas/economía , Femenino , Costos de la Atención en Salud , Humanos , Inmunoquímica/economía , Inmunoquímica/métodos , Lactante , Masculino , Sistemas de Atención de Punto/economía , Estudios Prospectivos , Derivación y Consulta/economía , Extracción en Fase Sólida/economía , Extracción en Fase Sólida/métodos
16.
Jt Comm J Qual Patient Saf ; 44(11): 683-694, 2018 11.
Artículo en Inglés | MEDLINE | ID: mdl-30064953

RESUMEN

BACKGROUND: Blood glucose (BG) testing is the most widely performed point-of-care (POC) test in a hospital setting. Multiple adverse events reported to the Food and Drug Administration (FDA) revealed that treatment decisions may be affected by information displayed on the POC glucometer's results screen. A randomized, crossover simulation study was conducted to compare two results screen configurations for ACCU-CHEK Inform II, a POC glucometer. METHODS: Prior to the study, a heuristic evaluation of the results screen configurations and a pilot study were conducted to select the two results screen configurations for comparison. At two multicampus medical centers, 66 nurse participants experienced two computer-based simulation scenarios that asked them to interpret glucometer readings and make treatment decisions for simulated patients with 32 mg/dL BG levels and subtle symptoms of hypoglycemia. One scenario displayed a numeric value ("32 mg/dL"), and the other displayed a range abbreviation, such as "RR LO" (out of reportable range; low). Treatment errors were recorded when the participant did not treat the hypoglycemic patient with glucose or when they administered insulin. RESULTS: When ACCU-CHEK Inform II displayed an "RR LO" reading, 10.6% of participants made a treatment error, including 6.7% of participants with prior training on the meaning of an "RR LO" reading. None of the participants made a treatment error when ACCU-CHEK Inform II displayed a "32 mg/dL" reading. CONCLUSION: Displaying a numeric BG reading eliminated potentially life-threating treatment errors caused by confusing range abbreviations. Manufacturers should consider these findings during future research and development of POC glucometers.


Asunto(s)
Análisis Químico de la Sangre/instrumentación , Glucemia/análisis , Errores de Medicación/prevención & control , Sistemas de Atención de Punto , Análisis Químico de la Sangre/economía , Simulación por Computador , Estudios Cruzados , Humanos , Hiperglucemia/tratamiento farmacológico , Hipoglucemia/inducido químicamente , Insulina/administración & dosificación , Insulina/efectos adversos
17.
Hosp Pediatr ; 8(9): 530-537, 2018 09.
Artículo en Inglés | MEDLINE | ID: mdl-30139766

RESUMEN

OBJECTIVES: The incidence of staphylococcal scalded skin syndrome (SSSS) is rising, but current practice variation in diagnostic test use is not well described. Our aim was to describe the variation in diagnostic test use in children hospitalized with SSSS and to determine associations with patient outcomes. METHODS: We performed a retrospective (2011-2016) cohort study of children aged 0 to 18 years from 35 children's hospitals in the Pediatric Health Information System database. Tests included blood culture, complete blood count, erythrocyte sedimentation rate, C-reactive protein level, serum chemistries, and group A streptococcal testing. K-means clustering was used to stratify hospitals into groups of high (cluster 1) and low (cluster 2) test use. Associations between clusters and patient outcomes (length of stay, cost, readmissions, and emergency department revisits) were assessed with generalized linear mixed-effects modeling. RESULTS: We included 1259 hospitalized children with SSSS; 84% were ≤4 years old. Substantial interhospital variation was seen in diagnostic testing. Blood culture was the most commonly obtained test (range 62%-100%), with the most variation seen in inflammatory markers (14%-100%). Between hospital clusters 1 and 2, respectively, there was no significant difference in adjusted length of stay (2.6 vs 2.5 days; P = .235), cost ($4752 vs $4453; P = .591), same-cause 7-day readmission rate (0.8% vs 0.4%; P = .349), or emergency department revisit rates (0.1% vs 0.6%; P = .148). CONCLUSIONS: For children hospitalized with SSSS, lower use of diagnostic tests was not associated with changes in outcomes. Hospitals with high diagnostic test use may be able to reduce testing without adversely affecting patient outcomes.


Asunto(s)
Recuento de Células Sanguíneas/estadística & datos numéricos , Análisis Químico de la Sangre/estadística & datos numéricos , Cultivo de Sangre/estadística & datos numéricos , Costos de la Atención en Salud/estadística & datos numéricos , Hospitales Pediátricos , Tiempo de Internación/estadística & datos numéricos , Readmisión del Paciente/estadística & datos numéricos , Pautas de la Práctica en Medicina/estadística & datos numéricos , Síndrome Estafilocócico de la Piel Escaldada/diagnóstico , Adolescente , Recuento de Células Sanguíneas/economía , Análisis Químico de la Sangre/economía , Cultivo de Sangre/economía , Sedimentación Sanguínea , Proteína C-Reactiva/metabolismo , Niño , Preescolar , Estudios de Cohortes , Servicio de Urgencia en Hospital/economía , Servicio de Urgencia en Hospital/estadística & datos numéricos , Femenino , Pruebas Hematológicas/economía , Pruebas Hematológicas/estadística & datos numéricos , Humanos , Lactante , Recién Nacido , Tiempo de Internación/economía , Masculino , Readmisión del Paciente/economía , Pautas de la Práctica en Medicina/economía , Estudios Retrospectivos , Síndrome Estafilocócico de la Piel Escaldada/economía , Síndrome Estafilocócico de la Piel Escaldada/metabolismo , Infecciones Estreptocócicas/diagnóstico , Streptococcus pyogenes , Centros de Atención Terciaria
18.
Biosens Bioelectron ; 117: 736-742, 2018 Oct 15.
Artículo en Inglés | MEDLINE | ID: mdl-30014948

RESUMEN

The determination of ethanol intoxication in whole blood samples may open the opportunity for a precise and quick point-of-measurement in the ambit of medical emergency or law enforcement. In contrast with traditional techniques based on breath sampling, direct blood measurements present greater immunity to errors specially in case of unconscious or non-collaborative patients. In this context, a portable, sensitive and easy-to-use instrument is highly desirable. In the current work we present a smartphone-based µPotentiostat which combines a novel circuital technique for sensor readout digitalization with a reusable lab-on-a-chip (LoC) concept. Such system allows both chronoamperometric and cyclic voltammetry measurements with a reduced number of electronic components on a very compact PCB (38.5â€¯× 22.5 mm2). Power, data-link and user interface are provided in combination with a standard smartphone, enabling cost-effectiveness and reconfigurability without sacrificing precision. The readout platform discussed in this work has been coupled to a LoC for point-of-care combining Pt electrodes microfabricated on silicon substrate for electrochemical measurement and a microfluidic structure of methacrylate for fluid management. Biosensing is enabled by in situ electrodeposition of a calcium alginate hydrogel containing horseradish peroxidase (HPR) and alcohol oxidase (AOx) for selective ethanol detection. Alginate membrane electrodeposition has been here optimized for rapid generation (2 min) and to retain the cellular fraction, thus allowing the measurement in whole blood samples. The µPotentiostat features a sensitivity of 36 nA/g L-1 to ethanol concentration in blood in the 0-1.25 g;L-1 range, with a limit of quantification (LoQ) of 4.5 nA, which is a suitable response for discerning the legal, illegal, severely illegal thresholds in a 40 µL sample of blood.


Asunto(s)
Alcoholes/análisis , Nivel de Alcohol en Sangre , Análisis Químico de la Sangre/instrumentación , Técnicas Electroquímicas , Teléfono Inteligente , Alcoholes/sangre , Técnicas Biosensibles , Análisis Químico de la Sangre/economía , Electrodos , Peroxidasa de Rábano Silvestre , Humanos , Dispositivos Laboratorio en un Chip , Límite de Detección
19.
Atherosclerosis ; 275: 434-443, 2018 08.
Artículo en Inglés | MEDLINE | ID: mdl-29937236

RESUMEN

BACKGROUND AND AIMS: Familial hypercholesterolaemia (FH) is widely underdiagnosed. Cascade testing (CT) of relatives has been shown to be feasible, acceptable and cost-effective in the UK, but requires a supply of index cases. Feasibility of universal screening (US) at age 1-2 years was recently demonstrated. We examined whether this would be a cost-effective adjunct to CT in the UK, given the current and plausible future undiagnosed FH prevalence. METHODS: Seven cholesterol and/or mutation-based US ±â€¯reverse cascade testing (RCT) alternatives were compared with no US in an incremental analysis with a healthcare perspective. A decision model was used to estimate costs and outcomes for cohorts exposed to the US component of each strategy. RCT case ascertainment was modelled using recent UK CT data, and probabilistic Markov models estimated lifetime costs and health outcomes for the cohorts screened under each alternative. 1000 Monte Carlo simulations were run for each model, and average outcomes reported. Further uncertainty was explored deterministically. Threshold analysis investigated the association between undiagnosed FH prevalence and cost-effectiveness. RESULTS: A strategy involving cholesterol screening followed by diagnostic genetic testing and RCT was the most cost-effective modelled (incremental cost-effectiveness ratio (ICER) versus no US £12,480/quality adjusted life year (QALY); probability of cost-effectiveness 96·8% at £20,000/QALY threshold). Cost-effectiveness was robust to both deterministic sensitivity analyses and threshold analyses that modelled ongoing case ascertainment at theoretical maximum levels. CONCLUSIONS: These findings support implementation of universal cholesterol screening followed by diagnostic genetic testing and RCT for FH, under a UK conventional willingness-to-pay threshold.


Asunto(s)
Análisis Químico de la Sangre/economía , Colesterol/sangre , Análisis Mutacional de ADN/economía , Costos de la Atención en Salud , Hiperlipoproteinemia Tipo II/diagnóstico , Hiperlipoproteinemia Tipo II/economía , Tamizaje Masivo/economía , Mutación , Factores de Edad , Toma de Decisiones Clínicas , Análisis Costo-Beneficio , Técnicas de Apoyo para la Decisión , Árboles de Decisión , Marcadores Genéticos , Predisposición Genética a la Enfermedad , Humanos , Hiperlipoproteinemia Tipo II/sangre , Hiperlipoproteinemia Tipo II/genética , Lactante , Cadenas de Markov , Tamizaje Masivo/métodos , Modelos Económicos , Fenotipo , Valor Predictivo de las Pruebas , Pronóstico , Calidad de Vida , Años de Vida Ajustados por Calidad de Vida , Factores de Tiempo , Reino Unido
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