Mortality in Sepsis: Sensitivity and Specificity
Introduction: Sepsis designates a condition of systemic inflammatory response (SIRS) attributed to an infection. Depending on the severity (sepsis, severe sepsis, septic shock) it has varying degrees of mortality.
SIRS: Two or more of the following conditions: temperature >38.5°C or <35.0°C; heart rate of >90 beats/min; respiratory rate of >20 breaths/min or PaCO2 of <32 mm Hg; and WBC count of >12,000 cells/mL, <4000 cells/mL, or >10 percent immature (band) forms
Sepsis: SIRS + documented or presumed infection
Severe Sepsis: Sepsis and at least one of the following signs of organ hypoperfusion or organ dysfunction: areas of mottled skin; capillary refilling of 3 s; urinary output of <0.5 mL/kg for at least 1 h or renal replacement therapy; lactate >2 mmol/L; abrupt change in mental status or abnormal EEG findings; platelet count of <100,000 cells/mL or disseminated intravascular coagulation; acute lung injury/ARDS; and cardiac dysfunction (echocardiography)
Septic Shock: Severe sepsis and one of the following conditions: systemic mean BP of <60 mm Hg (<80 mm Hg if previous hypertension) after 20 to 30 mL/kg starch or 40 to 60 mL/kg saline solution, or PCWP between 12 and 20 mm Hg; OR need for dopamine of >5 mcg/kg/min, or norepinephrine or epinephrine of <0.25 mcg/kg/min to maintain mean BP at >60 mm Hg (80 mm Hg if previous hypertension)
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The sensitivity and specificity
of findings for Mortality in Sepsis are listed below.
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