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Biomedical subjects

B Bachmann

Publications and source records attributed to B Bachmann.

54 records · Page 3Linked to original sources
PubMed1985

[Plasma levels of bupivacaine following inadvertent intravascular injection via a peridural catheter].

We report on a 57 year old woman, who suffered from an inadvertent intravascular injection of bupivacaine via a perforating epidural catheter. At the end of the epidural injection she showed symptoms of toxicity caused by the local anaesthetic. Venous blood dripping out of the epidural catheter and central venous blood were sampled simultaneously and analysis of plasma levels of bupivacaine were performed.

Anesthesia, Epidural↗
PubMed1985

[Catheter brachial plexus anesthesia for intra- and postoperative pain control. Plasma concentrations and analgesia interval in the use of bupivacaine].

In 15 orthopedic patients, undergoing plastic surgery of the upper extremity (elbow, forearm, hand) we studied plasma levels and pain free intervals, when performing catheter axillary plexus block with 0.5% and 0.25% bupivacaine as postoperative analgetic agent respectively. 30 minutes after injection of 40 ml of 0.5% bupivacaine maximum plasma levels were reached (means = 1.46 micrograms/ml), followed by a constant but slow decrease to 1 microgram/ml approximately after 2 h. 11.5 h (mean) after brachial plexus block there was a need for reinjection of local anesthetic solution for postoperative pain control. The pain free interval after 30 ml of 0.25% bupivacaine lasted 10.5 hours on the average. The 'top-up-dose' of 75 mg approximately equal to 30 ml of 0.25% bupicavaine caused only a small rise in plasma levels up to 0.6 micrograms/ml. Catheter brachial plexus block with bupivacaine is an appropriate procedure for both intra- and postoperative pain relief, especially in re-implantation surgery of the upper limb.

Adult↗
PubMed1980

[Is the BK mole syndrome always an autosomal dominant trait?].

After a brief review of the characteristics of familial malignant melanoma, the authors summarize the literature about the BK mole syndrome. The clinical and histological features of this dermatosis are described. Three personal cases are also reported. The latter tend to demonstrate a certain genetic heterogeneity, while in the literature the BK mole syndrome has been described as an autosomal dominant trait.

Adult↗
PubMed1979

[Rectosigmoidovesical fistula].

The symptomatology of vesico-colonic fistulae is presented and their differential diagnosis discussed. Management should be tailored to the individual case. Whenever possible, we perform a radical primary operation. An additional by-pass colostomy is indicated if it is felt that the integrity of the anastomosis is jeopardised.

Colon, Sigmoid↗
PubMed1978

[Experiences with percutaneous K-wire osteosynthesis in distal radius fractures].

Follow-up controls were made on 300 patients whose fractures of the distal radius were treated by a primary operative fixation with percutaneous K-wire. This group showed significantly better results than a control group of 300 patients given conservative management. We recommend a primary percutaneous K-wire osteosynthesis as treatment of choice for the management of distal radius fractures.

Adolescent↗
PubMed1976

[Perforation of the small intestine in systemic diseases].

Small intestine perforations caused by systemic disorders are, except with M. Crohn, extremely rare. Therefore we report two cases of "spontaneous" small intestine perforations: one with hypersensitivity angiitis and one with Moya-Moya-disease, the latter not yet described in the literature.

Adult↗
PubMedDate not supplied

[Metabolic changes caused by an extremities tourniquet and its modification by anesthesia procedures].

In 3 groups of 15 patients, respectively, we studied metabolic changes following tourniquet-release after operations of lower extremity. The influence of different anesthetic methods was evaluated by blood-gas-analyses up to 30 minutes after blood-circulation of the lower limb had been reinstalled. Our results demonstrate, that the patients under regional anesthesia with spontaneous respiration (group 1) could preserve their metabolic equilibrium with minor changes within the physiologic range. The intubated patients with controlled respiration (group 2) revealed a marked metabolic acidosis after tourniquet-release with insufficient respiratory compensation. Initial values were not reached within 30 minutes. The patients of group 3 (controlled respiration with a 25% increase of the normal minute volume for a period of 5 minutes after release of the tourniquet) had a less severe acidosis than those of group 2. The beneficial influence of spontaneous respiration in compensating metabolic acidosis--even in aged patients--following an ischemic tourniquet has been demonstrated by this investigation. Short-term hyperventilation seems to be the therapeutic tool in patients with controlled respiration to compensate for metabolic acidosis up to a certain extent.

Acid-Base Equilibrium↗
PubMedDate not supplied

[Incidence of air embolism in implantation of hip prostheses].

The prosthetic supply of the hip-joint may be accompanied by the problem of venous air embolism. By including 53 orthopaedic patients having undergone total hip replacement, the influence of bone-cement as well as of the different anaesthetic techniques on the frequency of embolic phenomenons was investigated. Embolism was determined as an abrupt decrease (greater than 5 mmHg) in the end-tidal pCO2. Venous embolism often occurred with cemented endoprostheses in contrast to non-cement implantations. Patients with general anaesthesia presented more often with venous air embolism than patients with epidural anaesthesia. This might be explained by an expanding effect of nitrous oxide on air bubbles entering the vascular bed under the implantation of the shaft-prostheses. Our data stress the importance of continuous monitoring of end-tidal pCO2 for early discovery of lung embolism.

Aged↗