The study seeks to determine potential correlations between ventilation and hematological alterations, contributing to a better understanding of its physiological effects and optimizing patient management in critical care settings.
* Sepsis is a clinical disorder caused by a dysregulated host response to severe infection. Pediatric sepsis remains a major public health issue and a significant cause of morbidity and mortality despite the development of standardized treatment guidelines, universal immunization programs, and advanced intensive-care organ support techniques. Severe sepsis is responsible for \> 8% of all pediatric intensive care unit (PICU) admissions and causes \> 4.5 million childhood deaths worldwide per year. * However, the clinical manifestations of these infections vary from minimal symptoms to multiple organ failure and death. The currently accepted definitions of sepsis, severe sepsis, and septic shock were developed and refined using different criteria to help identify, treat, and study patients with infections who are at higher risk of significant morbidity and mortality as it is responsible of 25% of deaths in children worldwide. * The onset, progression and outcome of sepsis are frequently associated with coagulation abnormalities, and the excessive crosstalk between inflammation and coagulation plays a vital role in these pathogenesis, which includes dysfunction of clotting cascade process, anticoagulant and fibrinolytic systems, together with related endothelial damage. Sepsis-related coagulopathy can range in severity from mildly decreased platelet counts and prolonged clotting time, which are indicative of subclinical issues, to more severe coagulopathies such as disseminated intravascular coagulation (DIC). Classic coagulation laboratory tests, such as activated partial thromboplastin time (APTT), prothrombin time (PT), and platelet count, mainly indicate signs of consumption and impaired synthesis instead of ongoing coagulopathy and change slowly in the disease course . * Mechanical ventilation (MV) is a common practice in pediatric intensive care units (PICUs). Its utilization rate, as reported in multicenter and prospective studies in heterogeneous cohorts, varies from 20% to 50% of the patients admitted to these units. Mechanical ventilation is a crucial intervention in pediatric intensive care units (PICUs), particularly for children with sepsis. Sepsis, a life-threatening condition resulting from an uncontrolled immune response to infection, often necessitates invasive mechanical ventilation (IMV) to manage respiratory failure and maintain adequate blood gas levels. The duration of mechanical ventilation can significantly impact patient outcomes, with prolonged use associated with increased risks of complications such as ventilator-associated pneumonia (VAP) and longer hospital stays. * Accurate and early diagnosis is important to initiate effective treatment and improve the prognosis of sepsis. Therefore, a large number of biomarkers have been developed to diagnose sepsis. Unfortunately, none of these biomarkers exhibit a high degree of sensitivity and specificity. The most common of these markers is C-reactive protein (CRP), which is a major acute-phase reactant in infection and inflammation. * CBC is an inexpensive, simple, routine, and repeatable test used to indicate the presence of infection. Leucocyte numbers and neutrophil ratios were the most commonly used indices for detecting infections. Recently, other CBC parameters, such as NLR and PLR, have been used in children and adult patients to identify inflammatory processes. These parameters are routinely measured in all patients admitted to the PICU. * The collaboration between mechanical ventilation and hematological parameters in pediatric sepsis patients is an area that warrants thorough investigation. Hematological abnormalities, including anemia, thrombocytopenia, and coagulopathies, are prevalent in sepsis and can adversely affect patient outcomes. Understanding how MV influences these parameters is essential for optimizing treatment protocols and improving prognoses. Despite the high incidence of MV in Egyptian PICUs, there is a gap in research focusing on its impact on hematological profiles in this demographic. Addressing this gap could lead to enhanced clinical practices and better patient outcomes in pediatric sepsis care.
Complete Blood Count (CBC): Using automated hematology analyzers to measure various blood cell parameters. * C-Reactive Protein (CRP): Quantitative analysis using immunoturbidimetric assay. * Erythrocyte Sedimentation Rate (ESR): Measured using the Westergren method. * Coagulation profile: * Prothrombin Time (PT): Using thromboplastin reagents and automated coagulation analyzers. * Activated Partial Thromboplastin Time (aPTT): Using phospholipid-based reagents and automated analyzers. * International Normalized Ratio (INR): Calculated from PT results. * Bleeding Time: Ivy method or template bleeding time. * Liver function tests: Including ALT, AST, ALP, bilirubin using spectrophotometric methods. * Kidney function tests: Creatinine and BUN using enzymatic methods.
Mechanical Ventilation Parameters * \- Ventilation Mode: Ventilator settings will record modes such as volume-controlled ventilation or synchronized intermittent mandatory ventilation (SIMV), which deliver breaths based on patient needs. * Tidal Volume: Measured in milliliters per kilogram of predicted body weight. Tidal volume settings aim to optimize oxygenation while minimizing lung injury risks by adhering to evidence-based limits (\<6 mL/kg). * Positive End-Expiratory Pressure (PEEP): PEEP levels will be recorded in cmH₂O to prevent alveolar collapse and improve oxygenation. Adjustments will balance oxygenation benefits with potential risks like reduced venous return or lung overdistension. * Fraction of Inspired Oxygen (FiO₂): FiO₂ values will be documented as decimals, starting at 1.0 (100% oxygen) and adjusted downward based on patient oxygenation needs.
Assiut University Children's Hospital
Asyut, Egypt
identify correlations between mechanical ventilation and hematological alterations in pediatric patients diagnosed with sepsis.
The primary outcome of the study is to identify correlations between mechanical ventilation and hematological alterations in pediatric patients diagnosed with sepsis. This includes assessing changes in blood parameters such as anemia, coagulation abnormalities, and inflammatory markers before and during mechanical ventilation.
Time frame: Baseline
optimize patient management in critical care settings
optimize patient management in critical care settings by understanding the physiological effects of MV. * ICU and hospital mortality rates * Duration of mechanical ventilation in days * Length of ICU and hospital stay in days * Extubation success and reintubation rates * Incidence of ventilator-associated pneumonia (VAP) * Progression to acute respiratory distress syndrome (ARDS) * Need for renal replacement therapy during ICU stay
Time frame: Baseline
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Study Type
OBSERVATIONAL
Enrollment
60