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Figure 1. Labeled syringes. LE'ITERS TO THE EDITOR 307 not to "obscure" the graduated markings. With this arrangement, the face of the drug label is not visible during syringe injections unless the syringe is rotated 180" during the injection process. Labeling the syringes with the label partially overlying the graduated markings also provides easy visibility of the drug labels when the syringes are placed on a flat surface. This is obviously a simple suggestion, yet it could prevent some serious mistakes. Figure 1. The thumb is obstructing the orifice to prevent the balloons from deflating.teaching pulmonary alveolar physiology and cardiac ventricular function in the anesthesia classroom.

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