Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Manometry”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 721 records · Page 40Linked to original sources
PubMed1990

Manometry and electromyography of the pharyngeal muscles in patients with dysphagia.

Simultaneous recording of the electromyographic activity of the pharyngeal muscles and the intraluminal pressure in the upper sphincter zone was performed routinely in patients with swallowing problems for the first time, to our knowledge. This technique was found to be very useful for the localization of the "site of lesion." The procedure is safe, easy to master, and causes minimal inconvenience. It can reveal, in the most direct way, whether the disturbance is in the hypopharyngeal musculature (represented by the inferior constrictor muscle), in the cricopharyngeal muscle (spasm or lack of relaxation), or in the synchronization between them. Simultaneous recording of intraluminal pressure adds valuable information about the mechanical events associated with electromyographic activity. It was found that in pathologic cases there is quite often no correlation between the electrical and mechanical events. Thus, simultaneous recording of both electrical and mechanical events is essential for the understanding of the pathophysiology of disturbances of deglutition.

Adult↗
PubMed1988

Assessment of microtransducers in anorectal manometry.

It has been reported that microtransducer-tipped catheters (transducer) produce reliable reproducible measurements which correlate well with water-filled balloon systems. Maximum resting pressure (MRP) and maximum voluntary contraction pressures (MVC) were compared using a standard station pull-through technique in 12 patients. There was a poor correlation for both MRP: microballoon, 115 cmH2O (60-160 cmH2O); transducer 60 (20-110), r = 0.62, P less than 0.05, and MVC: microballoon, 202 (60-375); transducer, 175 (60-210), r = 0.42, n.s. To determine whether this was due to radial variation in pressures measured by the transducer, we studied a further 39 patients with both systems. At each station, transducer measurements were made at each of four quadrants. We found better correlation for MRP: microballoon, 100 (40-175); transducer, 66 (34-120), r = 0.72, P less than 0.001, and MVC: microballoon, 225 (55-650); transducer, 180 (50-470), r = 0.87, P less than 0.001, but a significant radial variation for the transducer where rotation reduced MRP pressure measurements by 21 per cent (0-600 per cent), and MVC 17 per cent (0-76 per cent). Moreover there was a significant difference between anterior and posterior MRP in the upper anal canal, anterior 35 (5-80) versus posterior 25 (10-60), P less than 0.05. These results account for the poor correlation between random positioning of the microtransducer-tipped catheter and indicate that radial orientation must be taken into account.

Anal Canal↗
PubMed1990

Clinical assessment and anorectal manometry before postanal repair: failure to predict outcome.

It has been suggested that preoperative measurement of resting anal canal pressure and internal sphincter function can be used to identify those patients with neurogenic faecal incontinence who are unlikely to benefit from the operation of postanal repair. We have therefore analysed the results of the operation in 62 patients (six men and 56 women, mean age 59 years, range 30-83 years) and related clinical outcome to preoperative assessment of: resting anal canal pressure, the presence of gape and a combination of gape and low resting pressure. None of these factors was found to predict a poor result after postanal repair.

Adult↗
PubMed1990

Anal manometry.

Explore the source record for details and available documents.

Anal Canal↗
PubMed1993

Anal manometry in patients with fissure-in-ano before and after internal sphincterotomy.

The motility pattern of the internal anal sphincter was estimated manometrically in 42 patients with fissure-in-ano before and after left lateral internal sphincterotomy (LAS). Resting anal pressure and anal pressure during straining were significantly higher in patients than in controls (132 +/- 21 SD cmH2O vs 81 +/- 14 SD cmH2O P < 0.0002 and 46 +/- 16 SD cmH2O vs 13 +/- 4 SD cmH2O P < 0.0005), but were normal after LAS. Slow waves were more common in fissure patients (86 +/- 6 SD% of total recording time vs 68 +/- 11 SD% of total recording time, P < 0.0002), but also became normal after successful treatment. The presence of ultra slow waves was also more common in fissure patients (P < 0.0001), and although it was significantly reduced postoperatively (P < 0.0001), it did not return to normal. Sampling was less frequent in fissure patients (P < 0.0001) and improved significantly after successful treatment (P < 0.0002). Rectal distension produced significantly less reduction in anal pressure in fissure patients as compared to controls (P < 0.01), but successful treatment returned the response to normal. There were 2 patients with anal fissure who did not heal after left LAS. Those patients and a further 5 patients with non healed fissures after left LAS showed the same pathological manometric features as before surgery. Their fissures were successfully treated by additional right lateral internal sphincterotomy. In conclusion, increased internal sphincter activity is probably an aetiological factor in fissure-in-ano, while successful LAS improves anal sphincter function.(ABSTRACT TRUNCATED AT 250 WORDS)

Anal Canal↗