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The Ranson criteria form a clinical prediction rule for predicting the prognosis and mortality risk of acute pancreatitis. They were introduced in 1974 by the English - American pancreatic expert and surgeon Dr. John Ranson (1938–1995).
In a prediction rule study, investigators identify a consecutive group of patients who are suspected of having a specific disease or outcome. The investigators then obtain a standard set of clinical observations on each patient and a test or clinical follow-up to define the true state of the patient.
Pediatric end-stage liver disease (PELD) is a disease severity scoring system for children under 12 years of age. [1] It is calculated from the patient's albumin, bilirubin, and international normalized ratio (INR) together with the patient's age and degree of growth failure.
The surgeon and portal hypertension expert Charles Gardner Child (1908–1991) (with Turcotte) of the University of Michigan first proposed the scoring system in 1964 in a textbook on liver disease. [3]
Acute pancreatitis (AP) is a sudden inflammation of the pancreas.Causes include a gallstone impacted in the common bile duct or the pancreatic duct, heavy alcohol use, systemic disease, trauma, elevated calcium levels, hypertriglyceridemia (with triglycerides usually being very elevated, over 1000 mg/dL), certain medications, hereditary causes and, in children, mumps.
Higher UKELD scores equate to higher one-year mortality risk. A UKELD score of 49 indicates a 9% one-year risk of mortality, and is the minimum score required to be added to the liver transplant waiting list in the U.K. [1] A UKELD score of 60 indicates a 50% chance of one-year survival.
The Model for End-Stage Liver Disease, or MELD, is a scoring system for assessing the severity of chronic liver disease.It was initially developed to predict mortality within three months of surgery in patients who had undergone a transjugular intrahepatic portosystemic shunt (TIPS) procedure, [1] and was subsequently found to be useful in determining prognosis and prioritizing for receipt of ...
The minimum required resolution according to Johnson's criteria are expressed in terms of line pairs of image resolution across a target, in terms of several tasks: [3] Detection, an object is present (1.0 +/− 0.25 line pairs) Orientation, symmetrical, asymmetric, horizontal, or vertical (1.4 +/− 0.35 line pairs)