[The implication of the cricothyroid muscle in paralysis of the vocal cords (author's transl)]. / Zur Bedeutung des Musculus cricothyreoideus bei Stimmbandlähmungen

A report is given about one patient with bilateral paralysis of the vocal cords. After local anesthesia of the piriform sinus and novocain blockade of the R. externus of the superior laryngeal nerve of the same side a widening of the glottis and an improvement of the respiration was observed. After section of the R. externus of the superior laryngeal nerve we could observe even an improvement of the same effect as it has been observed after local anaesthesia. These observations were proved by spirography and photo-documentation. Because of paradox movements of the vocal cords a narrowing of the glottis was observed during inspiration. Therefore the patients dyspnea did not improve to the extent as it could be expected from the widening of the glottis after this therapy. The problems are discussed in relation to the literature.

[A new magnifying laryngoscope (epipharyngoscope) (author's transl)]. / Uber ein neues Lupenlaryngoskop (Epipharyngoskop)

A new developed laryngoscope (epipharyngoscope) is demonstrated, which comes now to production stage after three years of experimental work. The endoscope-a high capacity optical system with an angled direction of view-allows a thorough inspection and easy fotodocumentation of the larynx and epipharynx without molesting the patient. Even under difficult conditions regarding the anatomy the findings can be inspected as a survey or under magnification, which is done-technically an innovation-by moving an integrated lens system of the endoscope.