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C R Bayliss

Publications and source records attributed to C R Bayliss.

4 recordsLinked to original sources
PubMed1994

The synchronization of respiration and swallow sounds with videofluoroscopy during swallowing.

Simultaneous recording of adult subjects sipping small amounts of fluid from a cup have been obtained by videofluoroscopy together with feeding respiratory patterns and swallow sounds from the Exeter Dysphagia Assessment Technique (EDAT). These allowed visual representations of respiration and swallow sounds to be superimposed on a videofluoroscopy recording using a split-screen technique. Sequentially numbered, 1/50 sec, half-frame photographic prints were examined and schematic drawings of the relevant radiographs were made. These were superimposed on to the actual EDAT printed chart of the same swallow event, their exact time relationship with respiration and cervical swallow sounds being preserved. The results allow events in the barium videofluoroscopy to be related to events in the feeding respiratory pattern and swallow sounds recorded by EDAT.

Adult↗
PubMed1983

Ureteric obstruction after dacron vascular replacement.

Ureteric obstruction is a recognised complication of aortic bifurcation grafting where the graft material is in close proximity to the ureter as it crosses the common iliac vessels. We have assessed the value of routine postoperative urography in (1) a retrospective 6-year study of ruptured aortic aneurysm repair (11 patients reviewed) and (2) a prospective 18-month study of all patients receiving intra-abdominal dacron grafts (24 assessable patients) in a district general hospital. Renal function was normal in all cases and only 1 ureter was shown at urography to be minimally dilated but not significantly obstructed out of 32 'at risk' ureters in 18 patients in the 2 studies. This complication is uncommon, and no particular advantage can be demonstrated in positioning the ureters either behind or in front of the graft limbs. There is no place for routine urography which should be reserved for the patient with symptoms of ureteric obstruction.

Aged↗
PubMedDate not supplied

Pineal gland calcification and defective sense of direction.

Calcification of the pineal gland is shown to be closely related to defective sense of direction. In a tricentre prospective study of 750 patients lateral skull radiographs showed that 394 had calcified pineal glands. Sense of direction was assessed by subjective questioning and objective testing and the results noted on a scale of 0-10 (where 10 equals perfect sense of direction). The average score for the 394 patients with pineal gland calcification was 3.7 (range 0-8), whereas the 356 patients without pineal gland calcification had an average score of 7.6 (range 2-10). This difference was highly significant (p less than 0.01). A smaller parallel study in pigeons showed that pineal calcification also leads to a reduction in homing abilities. The findings suggested that the pineal gland plays an important part in directional sense and that damage to the gland, as indicated by calcification, causes defective sense of direction - perhaps by altering the intrinsic intracranial electromagnetic environment and thus affecting the magnetite response mechanism.

Age Factors↗