[Anesthesia in pulmonary diseases. Prevention of postoperativ pulmonary complications]. / Anästhesie bei Lungenerkrankungen - Postoperative pulmonale Komplikationen: Pathophysiologie und Prophylaxe.

Postoperative pulmonary complications (PPC) are considered a main factor increasing postoperative morbidity and mortality. Medical history and clinical examination are highly predictive for the development of PPC. Extended evaluation is indicated in the presence of pulmonary symptoms. Prophylaxis of PPC includes cessation of smoking, antiinfectious measures, optimization of bronchodilator therapy and improvement of cardiac performance. Regional anesthesia is favorable in the presence of bronchial hyperreactivity and for postoperative pain therapy. Postoperative course includes early extubation besides positioning, relief of intrabdominal pressure and physiotherapy.

Percutaneous osteoplasty as a treatment for painful malignant bone lesions of the pelvis and femur.

The purposes of this report are to describe percutaneous osteoplasty as a highly effective minimally invasive procedure to treat painful malignant bone lesions of the pelvis, ilium, and femur and to discuss the relevant literature. Five patients with histologically proven metastases to the pelvis, ilium, or femur were treated by percutaneous injection of liquid bone cement as an attempt to control severe bone pain. After percutaneous osteoplasty, all five patients experienced immediate and substantial pain relief and did not require pain medication for the duration of follow-up. No clinically significant complications occurred. Whereas percutaneous osteoplasty of the spine (vertebroplasty) is well-described and widely accepted to treat pain caused by benign or malignant vertebral body diseases, osteoplasty of bones outside the spine is less known. The immediate good clinical results observed in our small patient group should encourage more widespread application of this palliative treatment.

Comparison between instillation of bupivacaine versus caudal analgesia for postoperative analgesia following inguinal herniotomy in children.

BACKGROUND: In this study we compare the postoperative pain relief for inguinal herniotomy in children provided by instillation of bupivacaine into the wound with that provided by a caudal block. METHODS: Fifty-eight children aged 0-5 years having elective unilateral hernia repair were studied in this prospective, randomized, single-blind study. Anaesthesia was induced and maintained with oxygen, nitrous oxide, sevoflurane and propofol. Patients were randomly assigned to receive caudal analgesia with 1.0 ml.kg-1 body weight (BW) bupivacaine 0.25% or wound instillation with 0.2 ml.kg-1 BW bupivacaine 0.5% at the end of surgery. Pain was assessed over 24 h using a modified 10-point objective pain scale. During the first postoperative hour in the postanaesthesia care unit (PACU), intravenous (i.v.) piritramide (0.05 mg.kg-1) was administered to any child scoring 5 or more points on the pain scale. On the ward, rectal acetaminophen was administered by a staff nurse when considered necessary. RESULTS: Thirty children in the caudal group and 28 children in the wound instillation group were studied. There were no statistically significant differences between the groups regarding need for i.v. opioids, discharge time from the PACU and administration of acetaminophen. No statistically significant differences in postoperative pain score were observed in 16 of a total of 17 postoperative observations. No complications and no adverse effects were observed. CONCLUSION: Instillation of bupivacaine into a wound provides postoperative pain relief following hernia repair, which is as effective as that provided by a postoperative caudal block.

Dose-response characteristics during long-term inhalation of nitric oxide in patients with severe acute respiratory distress syndrome: a prospective, randomized, controlled study.

Inhaled nitric oxide (NO) improves systemic oxygenation (PaO2/FIO2) in adult patients with acute respiratory distress syndrome (ARDS). However, individual response varies, and previous trials demonstrated no outcome benefit. This prospective, randomized study in 40 ARDS patients analyzed dose-response (DR) characteristics during long-term inhaled NO. Patients were randomized for conventional therapy (control) or continuous treatment with 10 parts per million (ppm) inhaled NO until weaning was initiated. We measured DR curves of PaO2/FIO2 versus the inhaled NO dose at regular intervals. Before treatment (Day 0), peak improvement in PaO2/FIO2 was achieved at 10 ppm for both control and NO-treated patients. After 4 days, the DR curve of the NO-treated patients was left shifted with a peak response at 1 ppm. At higher doses (10 and 100 ppm), oxygenation deteriorated, and the response to inhaled NO disappeared in several patients. This effect was not observed in the control group. There was no effect of inhaled NO on duration of mechanical ventilation or stay at the intensive care unit. In conclusion, long-term inhaled NO with constant doses of 10 ppm leads to enhanced sensitivity after several days and does do not allow reduction of ventilation parameters. Hence, previous trials on therapy with inhaled NO in ARDS should be carefully interpreted, as they used constant NO concentrations, which may have become overdoses leading to deterioration of oxygenation after several days.