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Café coronary syndrome is a term used to describe a sudden collapse of healthy subjects during meals in the absence of any sign of asphyxia, respiratory distress, or neurological symptoms. Risk factors are advanced age, poor dentition, alcohol intoxication, and dementia or psychiatric disorders. One of the main problems with this syndrome is that, even when witnessed, it is often confused with myocardial infarction due to the absence of asphyxia symptoms. This leads to misdiagnosis and potential delays in patients' treatment that can eventually have fatal outcomes. As a result of that, medico-legal litigation may arise. This paper presents a typical case of fatal café coronary syndrome misdiagnosed as a myocardial infarction. The legal authority that requested the autopsy asked about the potential professional negligence of the healthcare providers who took care of the patient. We discuss the clinical and medico-legal aspects of café coronary syndrome. [ABSTRACT FROM AUTHOR]

A new blade force model is coupled to quasi-one dimensional Euler equations for a variable geometry flowpath. After analytical inclusion of the blade force, the flow equations take a strictly one-dimensional form with specific expressions of the convective flux and blade load source terms. Regardless of the flow turning, that is simply achieved by the load source term as an explicit function of the blade camber, the new form describes a perfect analogy between the average flow inside a blade passage and strictly one-dimensional flows, especially concerning wave propagation. This property allows capture of passage choking and shocks. Other types of shock more important for turbomachinery analysis, like leading edge strong shocks in compressors and trailing edge weak shocks in choked turbines, are modelled by properly matching the new set of equations inside blade regions with the standard quasi-one dimensional equations outside. Upon specification of viscous losses and subsonic deviations fitted from experimental results, the model predicts the choke mass flow of a transonic compressor stage (NASA stage 37) at a 0.1% to 0.4% accuracy both in the absence and in the presence of the leading edge shock. This result supports the effectiveness of the leading edge shock model. The accuracy on choke mass flow would decrease to around 1% if empirical input was specified from open-literature experimental correlations. The model captures the typical trend of exit angle with total pressure ratio for a choked turbine (NASA Lewis two-stage). This result involves satisfactory prediction of not only choke mass flow, but also trailing edge shock loss and supersonic deviation. The complete turbine operational map in terms of shaft torque and pressure ratio is also re-obtained with noticeable accuracy except in strong off-design conditions, where experimental correlations likely fail. [ABSTRACT FROM AUTHOR]