We studied the temporal relationships and the patterns of electromyographic activities of the posterior cricoarytenoid and thyreoarytenoid muscles (laryngeal abductor and adductor), the diaphragm and abdominal muscles in anesthetized cats during mechanically induced tracheobronchial and laryngopharyngeal coughs, expiration and aspiration reflexes. The posterior cricoarytenoid muscle activity reached the maxima just before the peak of diaphragmatic activity in both types of cough and aspiration reflexes and slightly before the top of abdominal muscle activity in coughs and the expiration reflex. Thus, this muscle contributes to the inspiratory phase of coughs and aspiration reflex and also to the expulsive phase of coughs and the expiration reflex. The thyreoarytenoid muscle presented strong discharges in the compressive phase of coughs and expiration reflex (during the rising part of the abdominal muscle activity) and in the subsequent laryngoconstriction (following the diaphragmal and/or abdominal muscle activity) in all four reflexes. This muscle was also slightly activated at the beginning of the aspiration reflex. The existence of four phases of the cough reflex is also discussed., I. Poliaček, A. Stránsky, J. Jakuš, H. Baráni, Z. Tomori, E. Halašová., and Obsahuje bibliografii
We have tested the hypothesis that neurons of both the ventral reticular nucleus and the adjacent parts of the lateral tegmental field (LTF) may be important for the production of motor programs associated with cough, expiration and aspiration reflexes. Our studies were conducted on non-decerebrate, spontaneously breathing cats under pentobarbitone anesthesia. Dysfunction of the medullary LTF region above the obex, produced by uni- or bilateral injections of kainic acid (a neurotoxin), regularly abolished the cough reflex evoked by mechanical stimulation of both the tracheobronchial and laryngeal regions and in most cases also the expiration reflex induced from the glottal area. However, some electrical activity still occurred in the neurogram of the recurrent laryngeal nerve during probing the laryngeal and glottal regions. Interestingly, the aspiration reflex elicited from the nasopharynx regularly persisted, although with lower intensity after the LTF lesion. Nevertheless, successive midcollicular decerebration performed in four cats also abolished the aspiration reflex. These experiments demonstrate the importance of medullary LTF neurons for the normal occurrence of cough and expiration reflexes. One possible explanation for the elimination of these expulsive processes is that the blockade of the LTF neurons may remove an important source of a facilitatory input to the brainstem circuitries that mediate cough and expiration reflexes. In addition, the potential importance of the mesencephalic reticular formation for the occurrence of the aspiration reflex and the role of the LTF in modulating both the eupnoeic breathing and the blood pressure are also discussed., J. Jakuš, A. Stránsky, I. Poliaček, H. Baráni, Ľ. Bošeľová., and Obsahuje bibliografii
Cíl: Cílem šetření bylo zjistit četnost subjektivně pociťovaných potíží s polykací funkcí mezi klienty sociálních zařízení následné péče za pomoci zahraničního nástroje nazvaného Dotazník o přijímání potravy (Eating Assessment Tool, EAT-10). Dalším cílem bylo zjistit časovou zátěž spojenou s administrací tohoto nástroje v praxi. Metody: Nástroj EAT-10 byl přeložen do češtiny a v pretestu byla ověřena jeho srozumitelnost. Poté byl nástroj, pomocí rozhovoru, použit v 5 sociálních zařízeních následné péče. Před dotazováním byl proveden screening kognitivních funkcí za pomoci testu Mini-Cog, který sloužil k vyřazení klientů s nedostatečnou kognitivní funkcí z dalšího testování. Výsledky: Do studie bylo zařazeno 117 respondentů ve věku 65 let a výše, z nichž 104 úspěšně prošlo testem Mini-Cog. Více než polovina z nich (58) uvádí polykací potíže. K použití nástroje EAT-10 bylo u 1 respondenta potřeba cca 4–5 minut. Závěr: Klienti sociálních zařízení následné péče často subjektivně vnímali polýkání jako problematické. Nástroj EAT-10 lze použít při získávání základních údajů o polykání u těchto klientů., Aim: The aim of the study was to determine the frequency of subjectively perceived swallowing difficulties in clients of social institutions providing aft er-care, using a foreign instrument called Eating Assessment Tool (EAT-10). Another aim was to identify the amount of time required to administer the tool in practice. Methods: The tool EAT-10 was translated into Czech and its comprehensibility was verifi ed in a pre-test. Finally, it was employed in interviews in five social institutions providing aft er-care. Before the respondents were interviewed, they were screened for cognitive functions via the Mini-Cog test, which was used to exclude from further testing those respondents who had insufficient cognitive function. Results: 117 respondents aged 65 and above were enrolled in the study, 104 of whom were successful on the Mini-Cog test. More than half of them (58) reported swallowing difficulties. It took approximately 4–5 minutes to complete the EAT-10 tool with one patient. Conclusion: Subjectively perceived swallowing difficulties are a frequent problem in clients of social institutions providing aft er-care. Th e EAT-10 tool can be used to obtain basic swallowing data in these clients., Hana Vejrostová, Jana Pánková, Petra Mandysová, Jana Škvrňáková, and Literatura 6