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Biomedical subjects

C Pfretzschner

Publications and source records attributed to C Pfretzschner.

7 recordsLinked to original sources
PubMed1986

[Esophageal injuries caused by a swallowed foreign body. A life-threatening condition].

Report on a case in which a protracted foreign body in the esophagus (chicken bone) had perforated the wall in the cervical area and had led to premonitory bleeding and finally to massive hemorrhage. Neither before had further symptoms occurred regarding to the esophageal perforation such as mediastinitis or subcutaneous emphysema nor had the attempt been successful to picture the transmural lesion. With an appropriate history of the foreign body and relapsing gastro-intestinal hemorrhage--despite a negative endoscopic result--an esophageal lesion must be highly suspected as causing bleeding. The immediate thoracotomy for wound repair is strongly indicated.

Aged↗
PubMed1984

[Mesenteric lipodystrophy: differential diagnosis of a benign abdominal tumor].

In a clinical presentation of a patient with mesenteric lipodystrophy the usefulness of the two imaging procedures ultrasound and computeromography is firstly demonstrated. Both methods have proven as good means in early diagnosis and patients follow up. Combination of ultrasound and guided tumor puncture is able to establish diagnosis avoiding laparotomy. For the follow up of these patients ultrasound and computertomography are valuable.

Abdominal Neoplasms↗
PubMed1984

Bolus geometry and dynamics after intravenous contrast medium injection.

Studies of contrast medium bolus geometry and dynamics were carried out to provide data for optimizing the use of contrast medium in digital subtraction angiography (DSA) and dynamic CT. Apparatus for fast digital recording of x-ray attenuation profiles was used; this is a new digital imaging mode (Chronogram) available on a CT scanner. Variables studied were injection site, injection speed, contrast medium volume, and subsequent saline injection; peak time, full width at half maximum, and maximum contrast enhancement were recorded. Positioning of the catheter in the vena cava reduced peak time and increased enhancement. High injection speeds led to shorter peak times. An increase in speed from 4 to 8 ml/s caused markedly higher enhancement, while further increase did not add significantly to enhancement. For a given injection speed, enhancement was increased and the peak time delayed by using larger injection volumes. Injection of saline solution after intravenous contrast medium did not change results significantly. There was a statistically significant correlation between pulse rate and peak time; the faster the pulse rate the shorter the peak time.

Angiography↗