Abstract
Summary
The hypothesis is offered that specialized pain receptors exist in the visceral or parietal pleura and that TEA relieves certain types of thoracic pain by blocking these receptors. Attempts to demonstrate these receptors in lightly narcotized animals have been unsuccessful. However, it has been demonstrated that lobeline injected intravenously into man will produce substernal burning and coughing, which can be blocked by the prior injection of TEA. The significance of these observations is discussed.
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