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Arterial Line - Pulse Pressure Variation (PPV) Pressure Variation (PPV) represents an interaction between lungs and heart.
Pressure Variation (PPV ... Pressure Variation (PPV ... volume (increased PPV ... PPV = (PPmax - PPmin ... Specifically, a PPV
Arterial Lines & Waveforms Arterial lines permit continuous invasive blood pressure measurement, frequent arterial blood sampling, and
PRESSURE VARIATION (PPV ... Pressure Variation (PPV ... volume (increased PPV
Important Biostatistics and Epidemiology Equations Sensitivity = TP / (TP + FN) = true positives / disease
#specificity #PPV ... #NPV
Fungal Biomarkers: Comparing Beta-D-Glucan and Aspergillus Galactomannan Beta-D-Glucan: • Polysaccharide cell wall component of many fungi •
Spec -80% for IA, PPV ... < 50%, NPV > 90%
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
Calculation #Table #PPV ... #NPV #Formulas
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 Subcutaneous emphysema on Chest XRay Etiologies: Pneumothorax (spontaneous or traumatic), trauma (tracheobronchial injury, barotrauma), esophageal
pressure ventilation (PPV ... patient needs PPV
Fluid Responsiveness and Fluid Tolerance Testing - OnePager Summary Fluid resuscitation can be beneficial when required or
Pressure Variation (PPV ... pulse pressure (PPV ... is analogous to PPV ... is analogous to PPV
USMLE Epidemiology and Biostatistics Summary Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
PPV: proportion ... prevalence is low, then PPV ... NPV: proportion ... specificity -> higher PPV ... sensitivity -> higher NPV
Review of Dynamic markers for assessment of fluid responsiveness Harms of traditional fluid challenge, CVP vs PPV/SVV
challenge, CVP vs PPV
Lead AVR on ECG 1. Acute myocardial infarction: ST elevation > 1.5 mm in aVR, indicative of
in aVR > 0.7: ppv ... NPV = 95% 4.
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