Search results for "Manometry"
showing 10 items of 95 documents
Study of the hydrolysis of lithium hydride
2015
The hydrolysis of LiH at room temperature and under low water vapor pressure (PH2O < 10 hPa) is investigated by thermogravimetry and FTIR spectroscopy with low sample mass. Then, to be closer to industrial conditions, hydrolysis of LiH is studied by manometry either in closed (adjustable PH2O) or open (constant PH2O) system using larger amounts of sample and heavy water. Products of the reaction are characterized by X-ray diffraction and FTIR spectroscopy. The first set of experiments show that the mechanism of hydrolysis starts with the formation of lithium oxide Li2O. Then, when the oxide layer is sufficiently thick, the hydrolysis reaction is followed by the formation of lithium hydroxid…
Long-term esophageal motility changes after thyroidectomy: associations with aerodigestive disorders.
2017
BACKGROUND: Patients undergoing thyroidectomy often complain aerodigestive disorders. In a previous study we showed the associations between voice impairment and proximal acid reflux, swallowing impairment and Upper Esophageal Sphyncter (UES) incoordination and the decrease in UES pressure in thirty-six patients observed before and soon afterwards uncomplicated thyroidectomy. This study investigated the state of post-thyroidectomy esophageal motility changes and its associations with these disorders after 18-24 months. PATIENTS AND METHODS: The thirty-six patients prospectively recruited according to selection criteria (thyroid volume ≤60 ml, benign disease, age 18-65 years, previous neck s…
Altered tachykinergic influence on gastric mechanical activity in mdx mice
2006
Abstract This study investigated whether alterationsin gastric activity in dystrophic mdx mouse can beattributed to dysfunctions of tachykinins. Endolumi-nal pressure was recorded and the expression ofneuronal nitric oxide synthase (nNOS), NK1 and NK2neurokinin receptors was investigated by immunoh-istochemistry. SR48968, NK2 receptor antagonist, butnot SR140333, NK1 receptor antagonist, decreased thetone only in mdx gastric preparations. In the presenceof N x -nitro- L -arginine methyl ester ( L -NAME), inhib-itor of NOS, SR48968 reduced the tone also in normalstomach. [Sar 9 , Met(O 2 ) 11 ]-SP, agonist of NK1 recep-tors, caused tetrodotoxin-sensitive relaxations, antag-onized by SR140333…
Nasal airway, lip competence, and craniofacial morphology
1993
The aim of the present investigation was to demonstrate whether children selected by their open lip posture show differences in their nasal airway resistance and facial morphology compared to children with closed lip closure. Thirty-two children with poor lip competence were compared to a control group of 20 with secure mouth closure. Patients with poor lip competence showed a significantly higher ML-NSL angle and also ML-NL angle. Anterior rhinomanometry, as well as measurements of the pharyngeal space on lateral headfilms, displayed no significant differences between the two groups. The same material was also grouped cephalometrically into skeletal open and skeletal deep bite configuratio…
Assessing Repeatability and Reproducibility of Anterior Active Rhinomanometry (AAR) in Children
2020
AbstractBackgroundRepeatability and reproducibility are essential for clinicians for several purposes. Although discouraged, use of the Coefficient of Variation (CV) for assessing repeatability and reproducibility, rather than the Intraclass Correlation Coefficient (ICC), is still widespread. The aim of the present study was to highlight how using inappropriate indices may lead to misleading results, and this is done by simulation study and using real data on Anterior Active Rhinomanometry (AAR) in both healthy children and ones with rhinitis.MethodsA simulation study was carried out to highlight how using inappropriate indices could be misleading. Then a comparison was made between CV and …
Primary repair in esophageal atresia: The results of long term follow-up
2006
The aim of this study was to assess the impact of postoperative morbidity during a long-term follow-up (6-12 years) in children with esophageal atresia treated at birth by primary anastomosis.Fifteen children with esophageal atresia and tracheoesophageal fistula were surgically treated at birth and their follow-up was extended to at least 6 up to 12 years. Data included clinical examination, evaluation of nutritional habit, continuous video recording of barium esophagogram, esophageal manometry, 24-h esophageal pH-monitoring and esophageal endoscopy.All the 15 patients completed the clinical evaluation and the set of tests. In the first 6 years, mild dysphagia and gastroesophageal reflux (G…
Endothelial function and arterial stiffness indexes in subjects with acute ischemic stroke: Relationship with TOAST subtype.
2017
Abstract Background and aims Only one study has examined endothelial function in subjects with acute ischemic stroke and no study has yet assessed arterial stiffness and reactive hyperemia peripheral arterial tonometry (RH-PAT) in ischemic stroke and its clinical subtypes. Our study aimed to evaluate arterial stiffness and endothelial dysfunction indexes in patients with acute ischemic stroke and the relationship between endothelial dysfunction indexes and arterial stiffness markers and stroke subtypes according to Trial of Org 10172 in Acute Stroke Treatment (TOAST) Classification. Methods We enrolled 98 patients with a diagnosis of acute ischemic stroke and 105 hospitalized patients witho…
Reproducibility of pulse wave velocity and augmentation index derived from non-invasive occlusive oscillometric tonometry analysis in adolescents
2018
The aim of this study was to investigate the short-term reproducibility of aortic pulse wave velocity (PWVao) and augmentation index (AIx%) assessed by the non-invasive oscillometric device. Altogether of 55 (19 boys, 36 girls) adolescents 16-19-years-of-age participated in the study. PWVao and AIx% were measured during the same laboratory visit at 2 min intervals using the Arteriograph™ device. Peak oxygen uptake (VO2peak ) was assessed by the maximal exercise test on a cycle ergometer and body fat percentage by bioelectrical impedance analysis. We studied reproducibility using intraclass correlation coefficients (ICC), coefficient variation with the root-means-square method expressed as p…
Reactive hyperemia index (RHI) and cognitive performance indexes are associated with histologic markers of liver disease in subjects with non-alcohol…
2017
BACKGROUND: No study evaluated vascular health markers in subjects with non-alcoholic fatty liver disease (NAFLD) through a combined analysis of reactive hyperemia peripheral arterial tonometry (RH-PAT) and arterial stiffness indexes. AIM OF THE STUDY: We aimed to assess whether NAFLD and its histological severity are associated with impairment of arterial stiffness and RH-PAT indexes in a mixed cohort of patients with biopsy-proven NAFLD. MATERIALS AND METHODS: The Kleiner classification was used to grade NAFLD grade. Pulse wave velocity (PWV) and augmentation index (Aix) were used as markers of arterial stiffness, whereas endothelial function was assessed using reactive hyperemia index (R…
The changes in resting anal pressure after performing full-thickness rectal advancement flaps.
2017
Background: Advancement flap is an accepted approach for treating complex fistula-in-ano. The purpose was to evaluate the changes in resting pressure along the anal canal after performing a full-thickness flap. Methods: Manometric review of patients who have undergone a full-thickness rectal advancement flap procedure for complex anal fistulas of cryptoglandular origin. Recurrence and continence were evaluated. Resting Anal Pressure was assessed along the anal canal by two measures: maximum resting pressure(MRP) and inferior resting pressure(IRP) at 0.5 cm from the anal verge. Results: 119 patients were evaluated. Overall recurrence rate was5.9%. Anal continence was maintained intact in 76.…