Think Twice: De-implementation of Laboratory Testing After Colorectal Surgery.

BACKGROUND: Clinically unindicated laboratory testing contributes to low-value care. Most postoperative day 1 laboratory tests after colorectal surgery are normal. However, no published interventions have shown that reducing overall postoperative laboratory testing is safe. OBJECTIVE: This study aimed to investigate the impact of reducing postoperative laboratory testing after colorectal surgery. DESIGN: This is a quality improvement study. SETTINGS: The study was conducted at an academic center with an enhanced recovery after surgery program that included 5 daily laboratory tests until discharge. PATIENTS: All adults undergoing colorectal or small-bowel surgery formed intervention and nonintervention cohorts based on surgeons who chose to opt into the study. Preimplementation (November 2019-October 2021), there were 545 intervention and 577 nonintervention patients. Postimplementation (November 2021-March 2023), there were 448 intervention and 437 nonintervention patients. INTERVENTIONS: The intervention included 3 postoperative day 1 laboratory tests and subsequent clinically indicated laboratory tests. MAIN OUTCOME MEASURES: Outcome measures included laboratory tests and days free of laboratory work. RESULTS: Postintervention, the intervention group had a 33% reduction in laboratory tests per hospital stay, a 26% reduction in laboratory tests per day, and a 49% increase in laboratory test-free days. There was no difference in length of stay (4 vs 4; p = 0.79) or readmissions (14.9% vs 12.9%; p = 0.39). The nonintervention group had no significant changes in laboratory work or laboratory test-free days, with no differences in length of stay (4 vs 4; p = 0.49) or readmissions (11.1% vs 11.0%; p = 0.96). LIMITATIONS: Demographics and complication rates were not reported. CONCLUSIONS: An intervention targeting reflexive laboratory testing after colorectal surgery resulted in safe, significant, sustained reductions in postoperative laboratory work, with substantial cost savings. These findings prompted a change in the laboratory order set to an opt-out system, and laboratory work reduction approaches have been implemented within other surgical divisions. Continuation and spread of these efforts are instrumental for prioritization of high-value surgical care. See Video Abstract . PINSELO DOS VECES ELIMINACIN DE LAS PRUEBAS DE LABORATORIO DESPUS DE LA CIRUGA COLORRECTAL: ANTECEDENTES:Las pruebas de laboratorio clínicamente no indicadas contribuyen a una atención de bajo valor. La mayoría de los análisis de laboratorio del primer día post operatorios de una cirugía colorrectal son normales. Sin embargo, ninguna intervención publicada ha demostrado que reducir las pruebas de laboratorio post operatorias generales sea seguro.OBJETIVO:El objetivo de este estudio fue investigar el impacto de reducir las pruebas de laboratorio pos toperatorias después de la cirugía colorrectal.DISEÑO:Este es un estudio de mejora de la calidad.AJUSTES:El estudio se llevó a cabo en un centro académico con un programa mejorado de recuperación después de la cirugía que incluye 5 laboratorios diarios hasta el alta.PACIENTES:Todos los adultos sometidos a cirugía colorrectal o de intestino delgado formaron cohortes de intervención y no intervención basadas en los cirujanos que optaron por participar en el estudio. Antes de la implementación (noviembre de 2019 - octubre de 2021) había 545 pacientes con intervención y 577 sin intervención. Después de la implementación (noviembre de 2021 - marzo de 2023) hubo 448 pacientes con intervención y 437 sin intervención.INTERVENCIONES:La intervención incluyó 3 laboratorios post operatorios del primer día y laboratorios posteriores clínicamente indicados.PRINCIPALES MEDIDAS DE RESULTADO:Las medidas de resultado incluyeron pruebas de laboratorio y días sin laboratorio.RESULTADOS:Después de la intervención, el grupo de intervención tuvo una reducción del 33 % en laboratorios por estancia hospitalaria, una reducción del 26 % en laboratorios por día y un aumento del 49 % en los días sin laboratorio. No hubo diferencias en la duración de la estancia hospitalaria (4 frente a 4; p = 0,79) ni en los reingresos (14,9% frente a 12,9%; p = 0,39). El grupo de no intervención no tuvo cambios significativos en el trabajo de laboratorio o en los días sin laboratorio, sin diferencias en la duración de la estadía (4 versus 4; p = 0,49) o reingresos (11,1% versus 11,0%; p = 0,96).LIMITACIONES:No se informaron datos demográficos ni tasa de complicaciones.CONCLUSIONES:Una intervención dirigida a pruebas de laboratorio reflexivas después de la cirugía colorrectal resultó en reducciones seguras, significativas y sostenidas en el trabajo de laboratorio post operatorio, con ahorros sustanciales de costos. Estos hallazgos provocaron un cambio en el orden del laboratorio establecido hacia un sistema de exclusión voluntaria, y se han implementado enfoques de reducción del trabajo de laboratorio en otras divisiones quirúrgicas. La continuación y difusión de estos esfuerzos son fundamentales para priorizar la atención quirúrgica de alto valor. (Traducción-Dr. Mauricio Santamaria ).

GM-CSF drives myelopoiesis, recruitment and polarisation of tumour-associated macrophages in cholangiocarcinoma and systemic blockade facilitates antitumour immunity.

OBJECTIVE: Intrahepatic cholangiocarcinoma (iCCA) is rising in incidence, and at present, there are limited effective systemic therapies. iCCA tumours are infiltrated by stromal cells, with high prevalence of suppressive myeloid populations including tumour-associated macrophages (TAMs) and myeloid-derived suppressor cells (MDSCs). Here, we show that tumour-derived granulocyte-macrophage colony-stimulating factor (GM-CSF) and the host bone marrow is central for monopoiesis and potentiation of TAMs, and abrogation of this signalling axis facilitates antitumour immunity in a novel model of iCCA. METHODS: Blood and tumours were analysed from iCCA patients and controls. Treatment and correlative studies were performed in mice with autochthonous and established orthotopic iCCA tumours treated with anti-GM-CSF monoclonal antibody. RESULTS: Systemic elevation in circulating myeloid cells correlates with poor prognosis in patients with iCCA, and patients who undergo resection have a worse overall survival if tumours are more infiltrated with CD68+ TAMs. Mice with spontaneous iCCA demonstrate significant elevation of monocytic myeloid cells in the tumour microenvironment and immune compartments, and tumours overexpress GM-CSF. Blockade of GM-CSF with a monoclonal antibody decreased tumour growth and spread. Mice bearing orthotopic tumours treated with anti-GM-CSF demonstrate repolarisation of immunosuppressive TAMs and MDSCs, facilitating T cell response and tumour regression. GM-CSF blockade dampened inflammatory gene networks in tumours and TAMs. Human tumours with decreased GM-CSF expression exhibit improved overall survival after resection. CONCLUSIONS: iCCA uses the GM-CSF-bone marrow axis to establish an immunosuppressive tumour microenvironment. Blockade of the GM-CSF axis promotes antitumour T cell immunity.

Infiltrative squamous cell carcinoma in hidradenitis suppurativa: A case report for early surgical intervention.

INTRODUCTION: Hidradenitis suppurativa (HS) is a chronic inflammatory disease of the skin that has potential for malignant transformation into squamous cell carcinoma (SCC). The pathogenesis of HS is poorly understood but thought to be from follicular keratinization, occlusion, and rupture of the pilosebaceous unit, followed by an infiltration of inflammatory cells into the dermis. Treatment is challenging due to a lack of effective medical therapies. PRESENTATION OF CASE: In this case report, we describe a patient with chronic HS that developed into SCC who underwent late surgical intervention after failing medical management. At the time malignant transformation was discovered, the SCC was beyond resectability and ultimately fatal. DISCUSSION: Based on the morbidity and mortality of chronic HS illustrated in our case and presented in the literature, we advocate for early surgical intervention. CONCLUSION: Wide surgical excision offers a near definitive intervention and should at least be considered for all chronic HS patients due to high morbidity and malignant transformation risk.