Can regional anaesthesia for lymph-node dissection improve the prognosis in malignant melanoma?

BACKGROUND: Optimized anaesthetic management might improve the outcome after cancer surgery. A retrospective analysis was performed to assess the association between spinal anaesthesia (SpA) or general anaesthesia (GA) and survival in patients undergoing surgery for malignant melanoma (MM). METHODS: Records for 275 patients who required SpA or GA for inguinal lymph-node dissection after primary MM in the lower extremity between 1998 and 2005 were reviewed. The follow-up ended in 2009. Survival was calculated as days from surgery to the date of death or last patient contact. The primary endpoint was mortality during a 10 yr observation period. RESULTS: Of 273 patients included, 52 received SpA and 221 GA, either as balanced anaesthesia (sevoflurane/sufentanil, n=118) or as total i.v. anaesthesia (propofol/remifentanil, n=103). The mean follow-up period was 52.2 (sd 35.69) months after operation. Significant effects on cumulative survival were observed for gender, ASA status, tumour size, and type of surgery (P=0.000). After matched-pairs adjustment, no differences in these variables were found between patients with SpA and GA. A trend towards a better cumulative survival rate for patients with SpA was demonstrated [mean survival (months), SpA: 95.9, 95% confidence interval (CI), 81.2-110.5; GA: 70.4, 95% CI, 53.6-87.1; P=0.087]. Further analysis comparing SpA with the subgroup of balanced volatile GA confirmed this trend [mean survival (months), SpA: 95.9, 95% CI, 81.2-110.5; volatile balanced anaesthesia: 68.5, 95% CI, 49.6-87.5, P=0.081]. CONCLUSIONS: These data suggest an association between anaesthetic technique and cancer outcome in MM patients after lymph-node dissection. Prospective controlled trials on this topic are warranted.

[Organisation of postoperative acute pain therapy in Germany compared to other European nations - results of a postoperative analgetic therapy observational survey (PATHOS)]. / Organisation der postoperativen Schmerztherapie Deutschlands im europäischen Vergleich - Ergebnisse einer europaweiten Umfrage (PATHOS).

BACKGROUND: From 2004 to 2005, a survey concerning the structure and organisation of postoperative acute pain therapy (APT) was conducted in 1358 hospitals from 7 EU states. METHODS: Anaesthesiologists, general and abdominal surgeons, orthopaedic / trauma surgeons, gynaecologists and ENT specialists were interviewed concerning: Education of medical and non-medical employees, patient information, protocols for acute pain therapy and methods of pain assessment. RESULTS: 1558 questionnaires from 746 hospitals were returned, among them 516 questionnaires from Germany where surgeons were more often responsible for acute pain therapy (50 vs. 36 %, p < 0.05). A budget for APT existed in only 8 % of German hospitals (vs. 22 % of hospitals in other nations, p < 0.05). German surgeons were more often responsible for the APT education of nurses on the general ward (58 vs. 20 %, p < 0.05). Patient information about APT was more often presented in Germany in selected cases (45 vs. 23 %, p < 0.05), APT protocols were developed more often (42 vs. 30 %, p < 0.05) and the influence of APT on morbidity and mortality was judged to be higher by German physicians (p < 0.05 each) as compared to other nations. Nevertheless, postoperative pain was not assessed at all in 53 % of all German hospitals, and only in 25 % of the hospitals of other nations (p < 0.05). CONCLUSION: Further initiatives to improve postoperative acute pain therapy are urgently needed in all nations under evaluation. National measures in Germany have to take into account the specific problems identified in this large survey and should focus on the interests and needs of German surgeons.

[PATHOS study on postoperative pain management in Europe: French data]. / Enquête européenne sur la prise en charge de la douleur et de l'analgésie postopératoires (PATHOS) : les résultats français.

INTRODUCTION: Relief of postoperative pain is a major topic of public health and has been repeatedly shown to be inadequate. STUDY DESIGN: A questionnaire survey performed in seven European countries (postoperative analgesic therapy observational survey) in 746 health structures--which perform more than 80% of the total number of surgical procedures of each country--has demonstrated significant improvement when compared with previous surveys, particularly regarding increased use of multimodal analgesia and regular administration of analgesic drugs. The present study describes specific results for the 178 French health care institutions surveyed and 345 questionnaires collected. Preoperative patient information is given on a regular basis for 84% of respondents. RESULTS: Multimodal analgesia is used after major surgery in 87% of cases and prescribed on a regular basis for 84% of respondents. Written protocols are available in 36% of responding institutions. Pain scores are measured several times a day in 65% of institutions. An acute pain service (or any other structure with a similar aim) is found in 52% of institutions. Regular on-site training courses on pain control are delivered to 30% of anaesthesiologists, to 6% of surgeons, to 57% of recovery-room nurses and to 63% of ward nurses. Overall, the study suggests an improvement of current practices but also highlights remaining insufficiencies. CONCLUSION: Important efforts remain to be done, particularly in the field of initial and continuous education of all healthcare categories as this is believed to be the only real way to obtain long-term results.

Psychological and vocational long-term outcomes of cardiac rehabilitation with postinfarction patients under the age of forty.

70 male postinfarction patients, who were under 40 years of age at the time of transmural myocardial infarction, participated in an inpatient control examination 3.8 years following first hospitalization (mean age: 40 years, SD = 3.5 years). A multivessel disease occurred in 52% of the patients, in 80% a multilocular disease was diagnosed and in 25% coronary angiography indicated a progression in coronary sclerosis. Coronary risk factors had been considerably reduced. 78% were capable of working. Job-related stress factors of at least moderate intensity were present in about 30% of the jobs now held by the patients. Progressive morphological change occurred in patients who are older, have a multilocular disease, are subjected to more frequent and more intensive job-related stress factors, show less concern for their health and tend to leave their old living habits unchanged. In patients with multivessel disease, time pressure elicited more psychophysiological activation; furthermore, doing too many tasks at the same time and a reduced control over vocational success, together with sufficient self-confidence and an exaggerated job devotion are found in these patients. Retired patients differ from those who went back to work in cardiological, psychological and psychophysiological aspects. The importance of psychological and psychophysiological findings for a successful vocational reintegration is emphasized by these results.

Type A behavior pattern in a German sample of post-infarction patients below age 40.

While Type A is predominant in 62 coronary subjects below age 40, its specificity is to be questioned because for controls the A:B ratio is very similar. Cases display significantly more hostility and loud/explosive speech than controls. During the interview, cases belonging to different Type A categories did not differ in heart rate, skin resistance responses and blood pressure, when task values are used. Furthermore, no differences between coronary A and B subjects are found on cardiological findings, inclusive severity of coronary atherosclerosis.

The Type - A behavior pattern applied to problems in the rehabilitation of MI - patients below age 40: associations with personality dimensions and psychophysiological parameters essential to CHD.

In a sample of 60 MI-patients below age 40 there were mainly found correlations between the component "hostility" and personality dimensions indicating job stress and problems in the patients adjustment to their new situation as chronically ill persons. Whereas self- and expert ratings do not differentiate between Type A1 and B subjects psychophysiological testing reveals a groups difference between both groups in Ps. Therefore it can be assumed, that in daily life Type A MI-patients are prone to respond with an elevated Ps.

The effects of adding sufentanil to bupivacaine for postoperative patient-controlled epidural analgesia.

We tested the hypothesis that postoperative patient-controlled epidural analgesia was more effective with the combination of sufentanil and bupivacaine (Group 2) than with bupivacaine alone (Group 1). One hundred patients undergoing thoracic, upper abdominal, and aortic surgery were provided with an epidural catheter and randomly allocated to one of the two groups. Postoperatively, patients were monitored in a postanesthetic care unit for at least 1 day before they were transferred to a ward. Both groups had similar demographics and operations. Pain treatment was continued for 4.4 +/- 0.6 and 4.5 +/- 0.7 days for Groups 1 and 2, respectively. Although Group 2 patients needed less volume of the epidural analgesics on Postoperative Days 1 and 2, they reported lower pain intensity at rest and during activity for the first three postoperative days. The groups did not differ from each other regarding the incidence of respiratory depression. There was no late respiratory depression; however, three cases of early respiratory depression were detected and easily treated (Group 1 one event, Group 2 two events). Motor block was only seen in patients with lumbar epidural catheters. There was no difference between groups, and all patients with thoracic catheters could be mobilized beginning on the first postoperative day. We conclude that 1) the addition of sufentanil to a small-dose bupivacaine augments epidural analgesia and 2) thoracic epidural catheters should be used for postoperative analgesia after abdominal or thoracic surgery.

Attenuation of the oculocardiac reflex after topically applied lignocaine during surgery for strabismus in children.

The effect of topical lignocaine applied to the eye muscles, on the incidence of the oculocardiac reflex during squint surgery of the medial rectus was investigated in 56 healthy children aged between 3-14 years. Three groups were studied. One (n = 16): stimulation of the reflex without lignocaine; 2 (n = 10): stimulation of the reflex after topical administration of 1 mg kg-1 lignocaine 2% to the medial part of the eye after induction of anaesthesia; 3 (n = 30): stimulation of the oculocardiac reflex without, and after a 5 min interval under the influence of lignocaine. Topical administered lignocaine significantly attenuated the OCR (105 vs. 68 bpm group II vs. group 1:82 vs. 63 bpm in group III). Severe bradycardiac rhythm disturbances, in particular cardiac stand-still, were not observed after lignocaine had been applied. Systemic side effects of lignocaine were not seen.

[Thoracic epidural anesthesia--more than an anesthesia technique]. / Die thorakale Epidural-anästhesie--mehr als ein Anästhesieverfahren.

Thoracic epidural anaesthesia (TEA) faces growing interest as an adjuvant anaesthetic and postoperative analgesic regimen. The procedure allows a specific blockade of nociceptive reflex arches and may exert beneficial effects on stress-induced alterations of organ function. Myocardial blood flow to areas at risk is improved, and paradoxical reactions of atherosclerotic coronary arteries after sympathetic stimulation are suppressed. After cardiac surgery, TEA improved postoperative recovery and resulted in better haemodynamic stability and allowed earlier extubation. During vascular surgery, the graft occlusion rate was significantly decreased. The improved pulmonary function after TEA is due to superior pain relief which allows the patients to breathe and cough sufficiently. After upper abdominal surgery, TEA leads to improved recovery of gastrointestinal function which reduces the risk of bacterial translocation. Although lumbar epidural anaesthesia is preferred by many anaesthesiologists as there is no risk of traumatizing the spinal cord, many positive effects are forgone. With insufficient rostral spread of a lumbar epidural block above the fifth thoracic level, cardiac complications can occur due to reflex activation of sympathetic outflow in unblocked thoracic regions. When the contraindications are carefully observed, TEA can be safely performed in most patients.

[Patient-controlled postoperative epidural analgesia. Prospective study of 1799 patients]. / Patientenkontrollierte postoperative Epiduralanalgesie. Prospektive Befunde von 1799 Patienten.

UNLABELLED: Side effects of postoperative epidural analgesia can be controlled by two strategies: Insertion of catheters into the center of the affected spinal segments and coadministration of local anesthetics and opioids. Both techniques will reduce single drug dosage. Additionally synergistic effects will result in excellent analgesia and the risk of side effects and complications will be minimized. METHODS: Between september 1995 and february 1997 the pain-service of the Klinik and Poliklinik für Anästhesiologie und operative Intensivmedizin der Westfälischen Wilhelms-Universität Münster has used this regimen to treat 1799 postoperative patients with patient-controlled epidural analgesia. All patients received an infusion of bupivacaine 0.175%, which was combined with sufentanil 1 microgram/ml in adults under the age of 70 an in children with a body weight > 30 kg. The infusion was adjusted to the individual needs of the patients by a visual analogue scale (VAS-scale: 1 = no pain; 10 = worst pain possible). Analgesia was adequate if VAS-scores were < 4 during rest and < 7 during movement and coughing. The continuous drug administration was combined with additional patient-controlled bolus doses. Postoperatively a special observation period to monitor side effects of epidural sufentanil was not defined. All patients were admitted to wards as soon as they fulfilled common criteria for discharge from the recovery room. RESULTS: Mean VAS-scores during the postoperative observation-period were within the prior defined limits. On the morning after surgery, however, a reduction in pain relief was observed and analgesia on the first postoperative day could significantly be improved after a 24-h on call pain service has been introduced. Except urinary retention side effects are rare. Probability of motor-blockade is significantly lower in patients with thoracic compared to patients with lumbar catheters. Not any patient suffered from severe complications such as sedation or respiratory depression.de

[Quality control in multimodal postoperative therapy]. / Qualitätsverbesserung durch multimodale postoperative Therapie.

Effects of anaesthesia and analgesia on postoperative morbidity and mortality remain controversial. Numerous studies have demonstrated that epidural anaesthesia and pain relief by epidural analgesia reduces perioperative stress responses and thus may reduce postoperative morbidity and mortality. In patients undergoing vascular surgery, epidural anaesthesia diminished postoperative hypercoagulability. These patients may benefit from less thromboembolic complications as well as a reduced risk of a re-operation. However, regional anaesthesia does not affect cardiopulmonary morbidity or overall mortality significantly in most clinical studies. One reason for this disappointing finding may be the missing integration of improved postoperative pain relief into general surgical care. A multimodal therapeutic approach, which consists of preoperative patient information, sufficient analgesia, early mobilisation and enteral feeding, may solve this discrepancy. Therefore, prospective controlled studies are needed to assess the influence of this perioperative approach on outcome.

[A modern concept of postoperative pain therapy]. / Ein modernes Konzept zur postoperativen Schmerztherapie.

Pain relief should be considered part of a multimodal postoperative approach. Combining patient-controlled pain therapy with other measures i.e. respiratory therapy or early mobilisation improves the outcome after surgery. In many patients adequate postoperative pain relief can be achieved by an optimal use of traditional pain management strategies. Therefore different levels of therapy should be introduced. On the first level nursing staff on surgical wards should treat pain. Patients undergoing extended surgery will need the advanced techniques of a postoperative pain service including balanced analgesia with antipyretic analgetics, patient-controlled intravenous opioids and epidural drug administration. Low dose combinations of local anaesthetics and opioids administered via thoracic epidural catheters result in excellent analgesia and provide the most effective means in improving outcome after surgery. For optimal adjustment of the patient-controlled techniques and early detection of side effects and complications nursing staff must be integrated into the pain service. Such a structured pain management program requires the training of nurses in the principles and techniques of postoperative pain treatment. Dosage of patient-controlled intravenous opioids or epidural drug combinations must be adjusted to the individual needs of the patients. Best results can only be achieved if the patient remains under observation by the pain service. This requires daily or twice daily rounds including an adequate documentation of pain relief, side effects and complications.

[Efficacy of oncologic surgery. Does anesthesia influence the postoperative outcome?]. / Effizienz der onkologischen Chirurgie. Hat die Anästhesie einen Einfluss auf das postoperative Ergebnis?

Major surgical interventions in tumour surgery are still associated with perioperative cardiopulmonary, infectious, thromboembolic, cerebral, and gastrointestinal complications. There are different prophylactic and therapeutic possibilities to anticipate or counteract these perioperative complications. The most important, including beta blockers and alpha-2-agonists for patients at coronary risk, preoperative optimisation of oxygen transport in high risk surgical patients and the concept of multimodal perioperative therapy (analgesia, early mobilisation, early enteral nutrition, and others) combined with high perioperative inspiratory oxygen concentration and maintenance of normothermia to reduce wound infection and cardiac complications are described in this paper.

Gastric tonometry: precision and reliability are improved by a phosphate buffered solution.

OBJECTIVE: To compare a phosphate buffered solution with normal saline as tonometric fluid in intramucosal PCO2 measurement in humans. DESIGN: Prospective, unblinded comparison. SETTING: Postsurgical critical care unit of a university hospital. PATIENTS: Six septic patients. INTERVENTIONS: Two tonometric probes were positioned in the gastric lumen in each patient. One tube was used for conventional tonometry (saline-filled balloon), while phosphate buffered solution was instilled into the second tube. MEASUREMENTS AND MAIN RESULTS: PCO2 was determined with three blood gas analyzers (ABL 2 [Radiometer, Copenhagen, Denmark], Corning 288 [Ciba Corning Diagnostics GmbH, Neuss, Germany], and StatProfile 9 Plus [Nova Biomedical, Waltham, MA]). Eight parallel PCO2 measurements per patient were evaluated, yielding a total of 48 measurements with each tonometric solution. Intrainstrumental comparison of the PCO2 determinations demonstrated an increase of 12.3 +/- 9.9% for ABL 2, 3.10 +/- 12.9% for Ciba Corning 288, and 101.2 +/- 31.5% for StatProfile 9 Plus with the phosphate buffered solution. The PCO2 values were decreased by the following amounts when the three instruments were compared, using the saline method: 14.2 +/- 8.2% (Ciba Corning 288 vs. ABL 2); 40.7 +/- 9.9% (StatProfile 9 Plus vs. ABL 2); and 30.9 +/- 9.35% (StatProfile 9 Plus vs. Ciba Corning 288). The difference in PCO2 determination, resulting from the different instrument designs, were significant between the three blood gas analyzers (p<.001). In addition, the variance of the intramucosal PCO2 values was significant between blood gas analyzers (p<.001) with normal saline as tonometric solution, but not with phosphate buffered solution. The coefficients of determination between PCO2 values in saline and phosphate buffered solution were r2=.85 for ABL 2, r2=.81 for Ciba Corning 288, and r2=.74 for StatProfile 9 Plus. When all 48 PCO2 values were analyzed, the interinstrumental coefficients of determination within a method for saline (and for phosphate buffered solution in parenthesis) were:r2=.83 (.92) between ABL 2 and Ciba Corning 288, r2=.72 (.92) between ABL 2 and StatProfile 9 Plus, and r2=.81 (.98) between Ciba Corning 288 and StatProfile 9 Plus. CONCLUSIONS: A considerable instrumental bias in PCO2 analysis is observed when saline is used as tonometric fluid in gastric tonometry, thus preventing a reliable determination of intramucosal pH. The present in vivo data show that the accuracy and reliability of intramucosal pH measurement can be improved by the use of phosphate buffered solution as tonometric fluid.

Effects of halothane in low concentrations on cerebral blood flow, cerebral metabolism, and cerebrovascular autoregulation in the baboon.

Halothane in anesthetic concentrations causes cerebral vasodilatation and decreases cerebral oxygen consumption (CMRO2). The purpose of this study was to evaluate cerebral blood flow (CBF) and CMRO2 changes associated with low concentrations of halothane. In eight normoventilated baboons with background anesthesia maintained with phencyclidine and nitrous oxide, CBF and CMRO2 were studied during the administration of end-tidal concentrations of halothane (0.125, 0.25, 0.375, 0.5, 0.75, and 1.0 vol%). Arterial blood pressure was supported by an infusion of angiotension II amide at 0.75 and 1.0 vol% of halothane to maintain an adequate cerebral perfusion pressure. In addition, cerebrovascular autoregulation was tested before and during the administration of 0.375, 0.75, and 1.0 vol% of halothane. Cerebrovascular autoregulation was assessed by observing the response of CBF to an acute increase in mean arterial pressure produced by angiotensin. CMRO2 decreased as the concentration of halothane was increased. At low halothane concentrations (0.125-0.375 vol%), CBF decreased; however, at concentrations above 0.375 vol%, CBF increased with a decrease in cerebrovascular resistance. Autoregulation was intact during 0.375 vol% of halothane, but with 0.75 and 1.0 vol% of halothane, CBF was passively dependent on cerebral perfusion pressure, suggesting impaired autoregulation.

[Prophylactic administration of glucocorticoids prior to microlaryngoscopies?]. / Prophylaktische Glukokortikoidgabe vor Mikrolaryngoskopien?

Intravenous glucocorticoids before direct laryngoscopy? The necessity of a preventive injection of corticoids before direct laryngoscopy was determined in a prospective, double blind study. 51 patients, who underwent direct laryngoscopy under general anaesthesia, received either 250 mg methylprednisolone in 10 ml NaCl 0.9% (corticoid group) or 10 ml NaCl (NaCl group) intravenously one hour before laryngoscopy. Oedema formation and the degree of inflammation in the pharynx and hypopharynx were examined on the day prior to surgery and three to four hours postoperatively. Complications of the airways were noted in the immediate postoperative phase and at the time of the second examination. Direct laryngoscopy did not induce any significant change in oedema formation or degree of inflammation in both groups. However, there was a correlation between the duration of surgery and the degree of increase in oedema and inflammation in the NaCl group but not in the corticoid group. No difference between the groups was noted with regard to postoperative complications of the airways. Based on the present study, routine application of corticoids to prevent oedema after direct laryngoscopy cannot be recommended.