Registro observacional y prospectivo de sepsis grave/shock séptico en un hospital terciario de la provincia de Guipúzcoa

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Abstract

Objetivo: Conocer las características epidemiológicas y clínicas de los pacientes con sepsis grave/shock séptico ingresados en la unidad de cuidados intensivos del Hospital Donostia, analizar factores pronósticos y compararlos con los datos existentes a nivel nacional. Diseño: Estudio observacional prospectivo durante un periodo consecutivo de 3 años (1 de febrero de 2008-31 de diciembre de 2010). Ámbito: Unidad de cuidados intensivos (UCI) del Hospital Donostia, único hospital de tercer nivel de la provincia de Guipúzcoa, que atiende a una población de 700.000 habitantes. Resultados: A lo largo de este periodo, 6.263 pacientes ingresaron en nuestro servicio; 2.880 fueron pacientes no coronarios y 511 presentaron al ingreso o en su evolución en UCI, un episodio de sepsis grave o shock séptico. Hubo un predominio de varones (66,5%), con una edad media de 63 años y Acute Physiology And Chronic Health Evaluation II (APACHE II) medio de 21. La mayoría fueron de tipo médico (68%), procedentes de planta de hospitalización(53,5%) y el origen más frecuente fue la neumonía (24%). La gran mayoría (73%) presentó shock séptico. La afectación hemodinámica fue la más frecuente, seguida de la renal y respiratoria. En todos los pacientes con shock se utilizó noradrenalina como vasopresor, más de la mitad requirieron ventilación mecánica (VM) y un tercio, hemodiafiltración venovenosa continua (HDFVVC). En el manejo de estos pacientes hubo medidas con aplicación elevada como la realización de hemocultivos o el uso de corticoides pero otros de escasa aplicación como la proteína C activada. La mortalidad en UCI fue del 20,8%, con una estancia media intra-UCI de 14 días. Las variables asociadas a la mortalidad en el análisis multivariante incluyen la presencia de hipoglucemia, la disfunción respiratoria, necesidad de ventilación mecánica, hiperlactacidemia y presencia de trombocitopenia en las primeras 24 horas junto con el origen de la sepsis en UCI o intrahospitalaria. Conclusión: La sepsis grave es una afección frecuente en nuestra unidad, genera elevada morbilidad y tiempo de estancia hospitalaria, además de una alta mortalidad. Las características epidemiológicas y clínicas de nuestros pacientes son similares a las referidas a nivel nacional. Teniendo en cuenta nuestros datos en el cumplimiento de las diferentes medidas de tratamiento, es evidente que quedan aspectos que mejorar.

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Most cited references 36

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Early lactate clearance is associated with improved outcome in severe sepsis and septic shock.

H Nguyen, Emanuel P Rivers, Bernhard P Knoblich … (2004)

Serial lactate concentrations can be used to examine disease severity in the intensive care unit. This study examines the clinical utility of the lactate clearance before intensive care unit admission (during the most proximal period of disease presentation) as an indicator of outcome in severe sepsis and septic shock. We hypothesize that a high lactate clearance in 6 hrs is associated with decreased mortality rate. Prospective observational study. An urban emergency department and intensive care unit over a 1-yr period. A convenience cohort of patients with severe sepsis or septic shock. Therapy was initiated in the emergency department and continued in the intensive care unit, including central venous and arterial catheterization, antibiotics, fluid resuscitation, mechanical ventilation, vasopressors, and inotropes when appropriate. Vital signs, laboratory values, and Acute Physiology and Chronic Health Evaluation (APACHE) II score were obtained at hour 0 (emergency department presentation), hour 6, and over the first 72 hrs of hospitalization. Therapy given in the emergency department and intensive care unit was recorded. Lactate clearance was defined as the percent decrease in lactate from emergency department presentation to hour 6. Logistic regression analysis was performed to determine independent variables associated with mortality. One hundred and eleven patients were enrolled with mean age 64.9 +/- 16.7 yrs, emergency department length of stay 6.3 +/- 3.2 hrs, and overall in-hospital mortality rate 42.3%. Baseline APACHE II score was 20.2 +/- 6.8 and lactate 6.9 +/- 4.6 mmol/L. Survivors compared with nonsurvivors had a lactate clearance of 38.1 +/- 34.6 vs. 12.0 +/- 51.6%, respectively (p =.005). Multivariate logistic regression analysis of statistically significant univariate variables showed lactate clearance to have a significant inverse relationship with mortality (p =.04). There was an approximately 11% decrease likelihood of mortality for each 10% increase in lactate clearance. Patients with a lactate clearance> or =10%, relative to patients with a lactate clearance <10%, had a greater decrease in APACHE II score over the 72-hr study period and a lower 60-day mortality rate (p =.007). Lactate clearance early in the hospital course may indicate a resolution of global tissue hypoxia and is associated with decreased mortality rate. Patients with higher lactate clearance after 6 hrs of emergency department intervention have improved outcome compared with those with lower lactate clearance.

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Improvement in process of care and outcome after a multicenter severe sepsis educational program in Spain.

Ricard Ferrer, Antonio Artigas, Mitchell Levy … (2008)

Concern exists that current guidelines for care of patients with severe sepsis and septic shock are followed variably, possibly due to a lack of adequate education. To determine whether a national educational program based on the Surviving Sepsis Campaign guidelines affected processes of care and hospital mortality for severe sepsis. Before and after design in 59 medical-surgical intensive care units (ICUs) located throughout Spain. All ICU patients were screened daily and enrolled if they fulfilled severe sepsis or septic shock criteria. A total of 854 patients were enrolled in the preintervention period (November-December 2005), 1465 patients during the postintervention period (March-June 2006), and 247 patients during the long-term follow-up period 1 year later (November-December 2006) in a subset of 23 ICUs. The educational program consisted of training physicians and nursing staff from the emergency department, wards, and ICU in the definition, recognition, and treatment of severe sepsis and septic shock as outlined in the guidelines. Treatment was organized in 2 bundles: a resuscitation bundle (6 tasks to begin immediately and be accomplished within 6 hours) and a management bundle (4 tasks to be completed within 24 hours). Hospital mortality, differences in adherence to the bundles' process-of-care variables, ICU mortality, 28-day mortality, hospital length of stay, and ICU length of stay. Patients included before and after the intervention were similar in terms of age, sex, and Acute Physiology and Chronic Health Evaluation II score. At baseline, only 3 process-of-care measurements (blood cultures before antibiotics, early administration of broad-spectrum antibiotics, and mechanical ventilation with adequate inspiratory plateau pressure) we had compliance rates higher than 50%. Patients in the postintervention cohort had a lower risk of hospital mortality (44.0% vs 39.7%; P = .04). The compliance with process-of-care variables also improved after the intervention in the sepsis resuscitation bundle (5.3% [95% confidence interval [CI], 4%-7%] vs 10.0% [95% CI, 8%-12%]; P < .001) and in the sepsis management bundle (10.9% [95% CI, 9%-13%] vs 15.7% [95% CI, 14%-18%]; P = .001). Hospital length of stay and ICU length of stay did not change after the intervention. During long-term follow-up, compliance with the sepsis resuscitation bundle returned to baseline but compliance with the sepsis management bundle and mortality remained stable with respect to the postintervention period. A national educational effort to promote bundles of care for severe sepsis and septic shock was associated with improved guideline compliance and lower hospital mortality. However, compliance rates were still low, and the improvement in the resuscitation bundle lapsed by 1 year.

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EPISEPSIS: a reappraisal of the epidemiology and outcome of severe sepsis in French intensive care units.

, B Vallet, C Brun-Buisson … (2004)

Ten years ago 8.4% of patients in French intensive care units (ICUs) were found to have severe sepsis or shock and 56% died in the hospital. As novel therapies for severe sepsis are emerging, updated epidemiological information is required. An inception cohort study conducted in 206 ICUs of randomly selected hospitals over a 2-week period in 2001, including all patients meeting criteria for clinically or microbiologically documented severe sepsis (with > or =1 organ dysfunction). Among 3738 admissions, 546 (14.6%) patients experienced severe sepsis or shock, of which 30% were ICU-acquired. The median age of patients was 65 years, and 54.1% had at least one chronic organ system dysfunction. The median (range) Simplified Acute Physiology Score (SAPS II) and Sequential Organ Failure Assessment (SOFA) at onset of severe sepsis were 48 (2-129) and 9 (1-24), respectively. Mortality was 35% at 30 days; at 2 months the mortality rate was 41.9%, and 11.4% of patients remained hospitalized. The median (range) hospital stay was 25 (0-112) days in survivors and 7 (0-90) days in non-survivors. Chronic liver and heart failure, acute renal failure and shock, SAPS II at onset of severe sepsis and 24-h total SOFA scores were the independent risk factors most strongly associated with death. Although the attack rate of severe sepsis in French ICUs appears to have increased over the past decade, its associated mortality has decreased, suggesting improved management of patients. Severe sepsis incurs considerable resources use, and implementation of effective management strategies and continued research efforts are needed.