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Haney Mallemat states the case for ultrasound in cardiac arrest resuscitation. He tells the story of Stephen, a 43-year-old male who suffers a cardiac arrest. Unfortunately, whilst looking for reversible causes with a transthoracic echocardiogram (TTE), chest compressions stopped, and Stephen died. Enter the trans-(o)esophageal echocardiogram (TEE). A trans-esophageal echocardiogram is an amazing diagnostic tool. It works in exactly the same way as any other ultrasound – there is a transducer on the end of a handle. The difference is that the stem is flexible and inserted down a patient’s oesophagus. This provides fantastic clear images in any patient, with no soft tissue or bones in the way. The beauty is, if you already know how to look at transthoracic echocardiogram, then there is no learning curve. The images are just flipped. TEE can rapidly identify reversible causes of cardiac arrest, for instance a pulmonary embolism, a clot in transit, aortic dissections or papillary muscle ruptures. It can do this