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Frank Herbstreit

Publications and source records attributed to Frank Herbstreit.

3 recordsLinked to original sources
PubMed2006

A cemented caval vein filter: case report.

STUDY DESIGN: Case report. OBJECTIVE: To present a previously undescribed complication of bone cement use during spinal surgery. SUMMARY OF BACKGROUND DATA: Surgical cement reaching the circulation is a frequently described complication. The placement of caval vein filters is a routine measure in specific patients to prevent thrombotic material, usually from deep venous thrombosis in the lower extremities, from reaching the pulmonary circulation. A case of bone cement getting trapped in the caval filter rendering it unremovable has not been published. METHODS: A 66-year-old patient underwent dorsal spondylodesis of the lumbar spine for superinfected metastasis with instability. Because of deep venous thrombosis of both femoral and iliac veins, a caval filter had been placed before surgery. Bone cement from the surgical procedure migrated into the venous bloodstream and got caught in the caval filter, thus rendering the filter unremovable. RESULTS: Surgical removal of the filter was necessary. CONCLUSION: If caval filters are present in patients undergoing surgery involving the use of bone cement, the possibility of cement being caught by the filter must be considered.

Aged↗
PubMed2006

The predisposition to inspiratory upper airway collapse during partial neuromuscular blockade.

RATIONALE: Partial neuromuscular transmission failure by acetylcholine receptor blockade (neuromuscular blockade) or antibody-mediated functional loss (myasthenia gravis), even with a magnitude of muscle weakness that does not evoke respiratory symptoms, can evoke dysphagia and decreased inspiratory airflow, and increases the risk of susceptible patients to develop severe pulmonary complications. OBJECTIVES: To assess whether impaired neuromuscular transmission predisposes individuals to inspiratory upper airway collapse, we assessed supraglottic airway diameter and volume by respiratory-gated magnetic resonance imaging, upper airway dilator muscle function (genioglossus force and EMG), and changes in lung volume, respiratory timing, and peripheral muscle function before, during, and after partial neuromuscular blockade in healthy, awake volunteers. MEASUREMENTS AND MAIN RESULTS: Partial neuromuscular blockade (train-of-four [TOF] ratio: 0.5 and 0.8) was associated with the following: (1) a decrease of inspiratory retropalatal and retroglossal upper airway volume to 66 +/- 22 and 82 +/- 12% of baseline, which was significantly more intense in the retropalatal area; (2) an attenuation of the normal increase in anteroposterior upper airway diameter during forced inspiration to 74 +/- 18% of baseline; (3) a decrease in genioglossus activity during maximum voluntary tongue protrusion to 39 +/- 19% (TOF, 0.5) and 73 +/- 29% (TOF, 0.8) of baseline; and (4) no effects on upper airway size during expiration, lung volume, and respiratory timing. CONCLUSIONS: Thus, impaired neuromuscular transmission, even to a degree insufficient to evoke respiratory symptoms, markedly impairs upper airway dimensions and function. This may be explained by an impairment of the balance between upper airway dilating forces and negative intraluminal pressure generated during inspiration by respiratory "pump" muscles.

Adult↗