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| 2. |
- Andersson-Wenckert, Ingrid, et al.
(författare)
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Anevac-D, a new system for close scavenging of anesthetic gases in dental practice
- 1989
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Ingår i: Scandinavian Journal of Dental Research. - 0029-845X. ; 97:5, s. 456-64
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Tidskriftsartikel (refereegranskat)abstract
- Anevac-D, a new system for close scavenging of anesthetic gases in dental practice is described. It consists of a rubber nose mask surrounded by an outer rigid shell and a chin scavenger. A vacuum in the slot between the nose masks provides scavenging of gases escaping from the inner mask. Gases escaping from the mouth are evacuated mainly by the skin scavenger. The efficiency of this system was assessed in healthy volunteers using argon as a tracer gas. Mass spectrometry was used for measurement of inspired, expired, and scavenged gas concentrations. The scavenging efficiency of the complete system was around 80% and was not affected by poor patient cooperation. It decreased to about 65% when the chin scavenger was removed. The dentist's exposure was measured by sampling of argon in the breathing zone by a Saran system. The average 4-min exposure varied between 90 and 250 ppm depending on system configuration and patient cooperation. Patient acceptance and clinical applicability were judged good. It is concluded that the Anevac-D system provides excellent scavenging properties and exposure levels well within the official recommendations by the Swedish Board of Occupational Safety and Health.
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| 3. |
- Fransson, Sven-Göran, 1949-, et al.
(författare)
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Radiologic Diagnosis of Gastro-Oesophageal Reflux
- 1989
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Ingår i: Acta Radiologica. - : Sage Publications. - 0284-1851 .- 1600-0455. ; 30:2, s. 187-192
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Tidskriftsartikel (refereegranskat)abstract
- In 149 patients, a standardized radiologic method for the detection of gastro-oesophageal reflux was applied and compared with the results obtained at endoscopy and by a manometric reflux test. Radiologic reflux was recorded in 53 patients, of whom 25 had reflux without abdominal compression and 51 with compression. At least one of the other two types of examination disclosed pathologic conditions in all but 2 of 53 patients. Oesophagitis was significantly more severe among the patients with reflux observed at radiography. The presence of hiatal incompetence with reflux only to the hiatal hernia but not to the oesophagus was not a strong indicator of gastro-oesophageal reflux disease. Hiatal hernia was present in a significantly larger number of the patients with reflux at radiography than in those without reflux. Increased width of the hiatus gave stronger evidence for reflux disease than in patients with a normal hiatus. Thus, the width of the hiatus also had a bearing on the diagnosis of gastro-oesophageal reflux disease.
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| 4. |
- Fransson, Sven-Göran, 1949-, et al.
(författare)
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Radiologic diagnosis of gastro-oesophageal reflux by means of graded abdominal compression
- 1988
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Ingår i: Acta Radiologica. - : Informa Healthcare. - 0284-1851 .- 1600-0455. ; 29:1, s. 45-48
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Tidskriftsartikel (refereegranskat)abstract
- The aim of the study was to ascertain whether abdominal compression by a standardized technique increases the reliability of the radiologic diagnosis of gastro-oesophageal reflux. Eighty-eight patients were examined by means of a manometric reflux test, 24-hour measurements of pH and endoscopy. The radiologic examination was performed with and without graded abdominal compression, the patient at the same time turning from side to side. When abdominal compression was included the result of the radiologic examination was positive in 31 patients. In the absence of abdominal compression reflux was detected in 11 of these patients. In one patient reflux was detected only without compression. All these 31 patients had one more test positive and in 27 at least 2 more tests were positive. Another 21 patients had reflux disease as indicated by at least 2 of the 3 other tests. The compression technique seems to yield no false positive responses, and proved to be significantly more reliable than examinations without compression.
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| 5. |
- Fransson, Sven-Göran, 1949-, et al.
(författare)
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Radiologic Diagnosis of Gastro-Oesophageal Reflux - Comparison of barium and low-density contrast medium
- 1987
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Ingår i: Acta Radiologica. - : Informa Healthcare. - 0284-1851 .- 1600-0455. ; 28:3, s. 295-298
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Tidskriftsartikel (refereegranskat)abstract
- It has been proposed that the high density of ordinary barium suspensions may complicate the radiologic diagnosis of gastro-oesophageal reflux. For this reason P-contrast was developed (Ferring AB); a contrast medium with the same density as water (1 g/cm3). A comparison of P-contrast and barium (Mixobar Ventrikel 400 mg/ml) was performed in 82 patients. All patients were examined with both contrast media and the findings were compared with those at reflux test at manometry, endoscopy and 24-hour pH monitoring. Another 40 patients and 15 symptom-free controls were examined with two different amounts of barium, 100 ml and 200 ml, to study if the radiologic diagnosis of reflux varied with the volume of contrast medium administered. P-contrast was found to have no advantages over barium for the diagnosis of gastro-oesophageal reflux. The outcome of the radiologic examination was not influenced by the different volumes of barium used.
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| 6. |
- Fransson, Sven-Göran, 1949-, et al.
(författare)
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Radiologic findings after fundoplication compared with a pH reflux test and symptoms
- 1986
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Ingår i: Acta Radiologica. - : Sage Publications. - 0284-1851 .- 1600-0455. ; 27:1, s. 33-39
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Tidskriftsartikel (refereegranskat)abstract
- In a follow-up after fundoplication, 61 patients underwent a double contrast examination of the stomach and a radiologic examination to detect any gastro-oesophageal reflux. The radiologic findings were compared with pH reflux test and symptoms. Gastro-oesophageal reflux was found in 7 patients at radiologic examination. None of these patients had an adequate fundoplication at a double contrast examination of the stomach and all had symptoms indicating reflux. Recurrence of gastro-oesophageal reflux may be shown at the radiologic examination and predicted by the morphologic appearances at the double contrast examination.
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| 7. |
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| 8. |
- Hägglund, Göran, et al.
(författare)
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Objektiv utvärdering av målningsfärger på trä för utomhusbruk del 1
- 1987
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Digital bildbehandling för utvärdering av målade träytors kondition har studerats. Resultatet visar att bildbehandling kan utvecklas till en objektiv metod med vilken man på ett tidigt stadium kan bedöma målade träytors kondition. Sådana metoder saknas i stort sett för närvarande. Bildbehandlingen måste dock kombineras med en lämplig metod för avlägsnande av färg med reducerad vidhäftning. Bildbehandling skulle kunna beräkna mängd sprickor, nedsmutsning och eventuell biologisk påväxt samt analysera orsakerna till att vidhäftningen mellan färg och trä försämras.
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| 9. |
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| 10. |
- Johansson, K. E., et al.
(författare)
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Oesophageal reflux tests, manometry, endoscopy, biopsy, and radiology in healthy subjects
- 1986
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Ingår i: Scandinavian Journal of Gastroenterology. - : Informa Healthcare. - 0036-5521 .- 1502-7708. ; 21:4, s. 399-406
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Tidskriftsartikel (refereegranskat)abstract
- The aim was to study the exposure time of acid during 24 h at two different oesophageal levels in 15 healthy subjects and its relation to other kinds of oesophageal findings. Five centimetres above the lower oesophageal sphincter the total reflux time was 0.2% (0-1.3%), and at the 15-cm level it was 0.1% (0-0.7%). A standardized compression test during manometry and radiologic examination showed that no subject had reflux. Hiatus hernia was provoked at the radiologic examination in four subjects, one of whom also had a widened hiatus. At endoscopy, one subject had a hiatus hernia and slightly granulated oesophageal mucosa. Biopsy specimens showed slight basal cell hyperplasia in one case. Bleeding in the dermal papillae or a few intraepithelial leukocytes were seen in eight cases, findings that might be due to endoscopic trauma. Without any history of gastrointestinal disorders, gastrooesophageal reflux was minimal under standardized conditions, although hiatus hernia and mild changes in biopsy specimens could be seen.
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