| 1. |
- Bülow, Margareta, et al.
(författare)
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Videomanometric analysis of supraglottic swallow, effortful swallow, and chin tuck in patients with pharyngeal dysfunction
- 2001
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Ingår i: Dysphagia. - : Springer Science and Business Media LLC. - 1432-0460 .- 0179-051X. ; 16:3, s. 190-195
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Tidskriftsartikel (refereegranskat)abstract
- Simultaneous videoradiography and solid-state manometry (videomanometry) was performed in 8 patients (4 women, 4 men; age range = 46-81 years, mean age = 70 years) with pharyngeal dysfunction. Five patients had severe pharyngeal dysfunction with frequent misdirected swallows. Three patients had moderate pharyngeal dysfunction with delayed initiation of pharyngeal swallow. Three different swallowing techniques were used: supraglottic swallow, effortful swallow, and chin tuck. Ten video radiographic variables and six manometric variables were analyzed. Contrast media penetration to the airways was analyzed regarding number of events and level of penetration. Supraglottic swallow, effortful swallow, and chin tuck did not reduce the number of misdirected swallows, but effortful swallow and chin tuck significantly (p = 0.008) reduced the depth of contrast penetration into the larynx and trachea. There was no significant improvement of pharyngeal retention. Chin tuck reduced the distance between the thyroid and the hyoid and the distance between the mandible and the hyoid. No other measured variable was significantly altered. This study shows that none of the different swallowing techniques reduced the number of misdirected swallows. However, there was a significantly reduced depth of the misdirected swallows. The swallowing techniques did not seem to prevent the occurrence of retention or improve weak pharyngeal constrictor muscles in this group of patients with severe to moderate dysfunction.
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| 2. |
- Carlson, Jonas, et al.
(författare)
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Classification of Electrocardiographic P-wave Morphology
- 2001
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Ingår i: IEEE Transactions on Biomedical Engineering. - : Institute of Electrical and Electronics Engineers (IEEE). - 1558-2531 .- 0018-9294. ; 48:4, s. 401-405
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Tidskriftsartikel (refereegranskat)abstract
- The atrial activity of the human heart is normally visible in the electrocardiogram as a P-wave. In patients with intermittent atrial fibrillation, a different P-wave morphology can sometimes be seen, indicating atrial conduction defects. The purpose of this study was to develop a method to discriminate between such P-waves and normal ones. 20 recordings of each type were used in a classification which, based on impulse response analysis of the P-wave and linear discrimination between various parameters, produced a correct classification in 37 of the 40 recordings (sensitivity 95%, specificity 90%)
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| 3. |
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| 4. |
- Santos, Susana, et al.
(författare)
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System Identification Applied to Spatial and Temporal Propagation of Atrial Activity During Atrial Fibrillation
- 2001
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Ingår i: Proceedings of the 40th IEEE Conference on Decision and Control, 2001.. - 0780370619 ; 1, s. 855-860
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The purpose of the paper is to apply system identification methods to study spatial and temporal propagation of atrial activation along coronary sinus (situated in the posterior left part of the heart, in the groove between left atrium and left ventricle) during paroxysmal atrial fibrillation using data recorded from 7 different patients. Furthermore, interatrial mechanisms of impulse conduction can be derived due to the position of coronary sinus. This study demonstrated consistency in electrical activity propagation during atrial fibrillation along coronary sinus in five patients out of six included. Nevertheless, results on direction and speed of propagation depended on the patient. For reference purposes, the method was tried out during sinus rhythm obtaining the expected high consistency in propagation direction and speed
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| 5. |
- Strömqvist, Björn, et al.
(författare)
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Ansiktsskydd for buklägesoperationer
- 2001
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Ingår i: Ortopediskt Magasin. - 0349-733X. ; :1, s. 18-18
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Tidskriftsartikel (populärvet., debatt m.m.)
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