An open-loop system (also called a “nonfeedback controlled” system) is one that makes decisions based solely on preprogrammed criteria and the preexisting model of the system. This approach does not use feedback to calibrate its output or determine if the desired goal is achieved. Because open-loop systems do not observe the output of the processes they are controlling, they cannot engage in le...

BACKGROUND Despite increased interest in complications within pediatric cardiology, the domain of imaging-related diagnostic errors has received little attention. We developed a new taxonomy for diagnostic errors within pediatric echocardiography that categorizes errors by severity, preventability, and primary contributor. Our objectives were to examine its findings when applied to diagnostic e...

background: pleurisy is a common extra pulmonary complication of tuberculosis, but current methods for diagnosing it are fairly crude. here we product a meta-analysis for the available evidence on the ability of tumor necrosis factor-? (tnf-?) in pleural fluid to serve as a diagnostic marker of tuberculous pleurisy (tp). materials and methods: we searched the pubmed, embase, and google scholar ...

Several recent books have addressed " How Doctors Think, " with emphasis on diagnostic decision making and the sources of diagnostic error. National venues now target the problem of diagnostic error and new studies highlight the high levels of costly and unnecessary test ordering, much of which is related to ineffective diagnostic processes. And, finally, teaching clinical reasoning is still co...

OBJECTIVES To describe the diagnostic errors occurring in a busy district general hospital accident and emergency (A&E) department over four years. METHOD All diagnostic errors discovered by or notified to one A&E consultant were noted on a computerised database. RESULTS 953 diagnostic errors were noted in 934 patients. Altogether 79.7% were missed fractures. The most common reasons for err...