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Postoperative pain can be effectively managed, even in the most complex oncologic procedures. Although the primary agents for treatment of severe pain continue to be opioids, routes of administration and dosing regimen have undergone a dramatic metamorphosis in the past 10 years. The intramuscular injection given every 4 hours has been replaced by patient-controlled analgesia and epidural techniques. Management of ancillary issues that contribute to an increased perception of pain (i.e., stress, depression, anxiety, and inflammation) must be included in an effective multimodal plan. Closer attention to the treatment of pain can obviate the consequences of poorly managed pain, which we are only beginning to understand. In this day of active consumerism in medicine, patients have come to expect improved pain management. Early outcome studies are beginning to confirm the belief that improved pain management translates into between outcomes and earlier dismissals. In the first century BC, Publilius Syrus, a Latin mime, wrote, "There are some remedies worse than the disease." For centuries, pain was inextricably linked to treatment. We may now be approaching a time in the development of medical care when this is no longer true.
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PMID:Postoperative pain management. 1081 17

The alpha-adrenergic agonists have been demonstrated to have synergistic effects with opioids and local anesthetics in animal research. The present study was performed to determine whether the addition of adrenaline improves the analgesic effects of an epidural infusion of a combination of fentanyl and bupivacaine after abdominal surgery. We studied 90 ASA 1 or 2 patients scheduled for abdominal surgery under epidural anaesthesia, with or without general anaesthesia. Patients were randomly divided into two groups to receive a postoperative epidural infusion of fentanyl 5 micrograms/ml in bupivacaine 0.2%, with or without adrenaline 5 micrograms/ml, at a rate of 2 ml/h for more than 48 hours. Postoperative pain relief was assessed using visual analog scales (VAS), both at rest and during coughing, at 2, 24, and 48 hours after surgery. The number of rescue analgesics and side-effects such as nausea, vomiting, pruritus, respiratory depression, headache, muscle weakness, and hypotension were recorded. Patients who received adrenaline (n = 40) reported significantly lower mean VAS scores than those who received no adrenaline (n = 37), both at rest at 24 hours postoperatively and during coughing at 24 and 48 hours. The number of additional analgesics and incidence of side-effects did not differ between groups. In conclusion, the results of the present study demonstrate that the addition of adrenaline to a combination of fentanyl and bupivacaine improves the quality of epidural analgesia after abdominal surgery. Under the conditions of the study, we did not detect any disadvantage from the addition of adrenaline.
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PMID:Does adrenaline improve epidural bupivacaine and fentanyl analgesia after abdominal surgery? 1151 59

Patient (ASA PS I-III, mean age 68 +/- 14 yr) who had undergone lower extremity surgery under spinal anesthesia were studied to determine the effect of intrathecal administration of morphine 0.1 mg on intra- and postoperative pain relief and its side effects. They were randomly divided into control (C) and intrathecal morphine (M) groups (n = 25, respectively) and received 10 mg tetracaine in 4 ml of a quarter saline with 7.5 micrograms epinephrine. Incidence of intraoperative tourniquet pain was significantly lower in M group (36.8%) than in C group (64.3%). Postoperative pain was examined in terms of the duration until the first supplemental analgesic within 24 hr. The mean duration was 7.0 +/- 4.3 hr in the control group, but 11 patients in the M group needed it within 24 hr (18.1 +/- 6.8 hr, excluding 6 patients who did not receive analgesic). Although incidences of postoperative nausea, vomiting, and itching were higher in M group than in C group, none required antiemetic or naloxone. Both groups showed no difference in postoperative respiratory depression measured by apnea monitor (Eden Trace II, Mallinkrodt Japan, Tokyo). The results suggest that a low dose of intrathecal morphine is effective on postoperative 24 hr pain relief in elderly patients and that its side effects are negligible.
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PMID:[Low dose intrathecal morphine and postoperative pain relief in elderly patients]. 1171 41

Sickle cell diseases comprise a group of inherited disorders that alter hemoglobin, ultimately causing hemolytic anemia and reoccurring instances of vascular occlusion that produce acute and chronic pain. Many patients with sickle cell disease require surgery for conditions associated with their disease. Painful vaso-occlusive episodes, which can be debilitating and require long hospital stays, are often precipitated by the stress of surgery. Poorly controlled postoperative pain also can worsen an impending painful crisis. Traditional therapy for patients with sickle cell disease undergoing surgery has included preoperative transfusion and postoperative opioid therapy. Recent studies have demonstrated that aggressive preoperative transfusion therapy is not beneficial over a more conservative approach. Postoperative pain control trends include nonsteroidal anti-inflammatory drugs such as ketorolac and opioid agonist-antagonist agents such as nalbuphine, as well as epidural analgesia to minimize respiratory depression. New preventive therapy for vaso-occlusive crisis includes hydroxyurea, a chemotherapeutic agent that stimulates the production of fetal hemoglobin. Inhaled nitric oxide is being used in clinical trials with success in slowing the sickling process and unsickling cells. Phase III clinical trials are in progress for 2 drugs that decrease sickling: poloxamer 188 and fructose 1-6 diphosphate. These new therapies should help improve the anesthetic course of the patient with sickle cell disease, reduce postoperative complications, and shorten hospital stays.
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PMID:New advances in the treatment of sickle cell disease: focus on perioperative significance. 1175 66

Postoperative pain relief is a growing concern to an anaesthesiologist since no single analgesic is free from side-effects. Moreover, it becomes a challenge after caesarean section delivery to provide postoperative pain relief without much sedation, respiratory depression or problems like nausea, vomiting, so that early baby acceptance and care by mother is promoted. Antinociceptive effect of midazolam is well established by now and its safety is documented. This observation was made in a blind randomised study of 40 women of ASA I/II to evaluate postoperative pain relief using intrathecal midazolam in caesarean section delivery. Group A patients (n=20) received 1.5 ml of 5% lignocaine only and group B patients (n=20) received mixture of 1.5 ml 5% lignocaine with 2 mg midazolam (preservative free) through intrathecal route at L3.4 interspace; vital parameters were monitored intra-operatively and postoperatively and Apgar score of baby in 1st and 5th minute of deliverywas assessed. It was observed intrathecal midazolam produced highly significant (p<0.001) postoperative pain relief together with anti-emetic effect and tranquillity of patients of caesarean section delivery.
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PMID:Intrathecal midazolam for postoperative pain relief in caesarean section delivery. 1202 17

Pain has been recognized as a problem of global proportions, and postoperative pain is one of the most common types of pain. Postoperative pain is acute and, although it is preventable and/or treatable, it is often undertreated. Lack of appropriate analgesic management has significant impact on clinical and economic outcomes. Negative clinical outcomes of inadequately managed acute postoperative pain include extended hospitalization, compromised prognosis, higher morbidity and mortality, and the development of a chronic pain state as a result of neuronal plasticity. Although estimating the economic burden of postoperative pain is difficult, this burden is considerable and results from direct costs due to excess health-care resource use, as well as indirect costs due to reduced patient functionality and productivity. These latter factors also have a significant adverse impact on patients' quality of life and may be associated with the development of depression and anxiety. Thus, improved clinical outcomes are dependent not only on the availability of effective drugs but also on their appropriate utilization. A multimodal approach incorporating different drugs and techniques is effective in reducing postoperative pain but is limited by the currently available therapies. The efficacy of opioids is well established, but there are concerns about dependency, respiratory depression and side-effects, which patients often find intolerable. Non-steroidal anti-inflammatory drugs (NSAIDs) are effective as adjunctive medication in a multimodal regimen but are associated with side-effects, such as platelet dysfunction and renal and gastrointestinal toxicity, that have special clinical significance in patients undergoing surgical procedures. Cyclooxygenase-2-specific inhibitors such as celecoxib, rofecoxib and valdecoxib, were developed to provide the efficacy of non-specific NSAIDs while limiting associated toxicity. These agents have demonstrated analgesic efficacy and an opioid-sparing effect in a variety of surgical procedures, suggesting their value as an alternative to non-specific NSAIDs. Further studies are needed to determine the impact of these drugs on clinical and economic outcomes when used in a programme of postsurgical pain management.
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PMID:The burden of acute postoperative pain and the potential role of the COX-2-specific inhibitors. 1458 17

The authors evaluated prospectively the efficacy and safety of continuous subcutaneous morphine administration for postoperative analgesia after posterior spinal fusion and instrumentation for idiopathic scoliosis. Thirty patients were given the subcutaneous morphine infusion (20 mg/day), and 20 patients were not given morphine (control group). Postoperative pain control was assessed using a verbal response score (VRS) and a visual analog pain scale (VAS). The number of times the patient requested supplemental analgesics was also evaluated. VRS and VAS measurements were significantly lower in the continuous subcutaneous morphine group compared with the control group. Also, analgesic consumption in the continuous subcutaneous morphine group was lower than that of the control group. There was no respiratory depression or constipation. Preemptive analgesia using continuous subcutaneous infusion of morphine is a simple, safe, and effective method to control postoperative pain after posterior instrumentation and spinal fusion for idiopathic scoliosis.
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PMID:Effects of preemptive analgesia using continuous subcutaneous morphine for postoperative pain in scoliosis surgery: a randomized study. 1530 11

Postoperative pain can intensify the sympathoadrenergic reaction, which is commonly seen after surgery, and thus possibly pave the way for certain complications, such as coronary ischemia, bronchopneumonia, intestinal stasis, thromboembolism, infection, sepsis, and metabolic disturbances. Investigations of cardiovascular, respiratory, gastrointestinal, metabolic, and immunologic function indicate that high-quality pain relief can diminish postoperative organ impairment and failure. Some aspects of the improvements attributed to the quality of analgesia, such as prevention of tachycardia and hypertension, attenuation of hyperglycemia and catabolism, improvement of gastrointestinal motility and cellular immunity cannot be definitely distinguished from the effects of sympathetic blockade due to epidural analgesia with local anesthetics, however. There is another aspect of the problem. The better the quality of postoperative pain relief, the more likely it is that analgesia-related complications, such as respiratory depression (opioids), cardiovascular depression (epidural local anesthetics), renal failure (NSAIDs) and bladder dysfunction (epidural opioids and local anesthetics) will occur. The question of whether postoperative morbidity and mortality can be reduced by effective analgesia has been investigated in the past few years. Some studies indicate that better analgesia is advantageous for the patient, especially with respect to postoperative complications, hospital stay, long-term well being, and costs. In other clinical trials incorporating more patients, however, this hypothesis had to be rejected. At present, therefore, we cannot state that effective pain relief influences postoperative morbidity and mortality.
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PMID:[Influence of postoperative pain on morbidity and mortality.]. 1841 28

A literature review regarding symptoms and recommendations in relation to e.g. driving and physical activity precautions during the recovery period following coronary artery bypass and/or valve surgery was performed. Postoperative pain, fatigue, anxiety, depression, sleeping problems and neurocognitive impairment affecting daily living are common. Every patient should be offered individually tailored cardiac rehabilitation. Patients should be on sick leave for 4-8 weeks following sternotomy. Recommendations during convalescence are based on a low level of evidence.
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PMID:[Convalescence and sick leave following cardiac surgery]. 1981 40

Postoperative pain control is a clinical imperative, for which morphine is a preferred opioid. However, interpatient variability and drug accumulation with repeated doses, as well as medication errors, may result in respiratory arrest with this medication. Early detection of respiratory depression is essential for safe use of morphine, following both initial and repeated doses. A multidisciplinary team contributed to development of an intravenous (IV) bolus morphine monitoring guideline that reflects current knowledge of morphine pharmacokinetics. Monitoring over a 22-week period in a postsurgical unit was then assessed via record review. A total of 270 postsurgical patients received a first dose of IV bolus morphine, with 784 subsequent doses also administered. Complete monitoring (heart rate, respiratory rate, blood pressure, sedation score, oxygen saturation, and pain score) after the morphine bolus was documented at baseline and 10 and 20 minutes for 34%, 30%, and 23%, respectively, of the patients; partial monitoring (respiratory rate and oxygen saturation) was documented for an additional 22%, 15%, and 9% of patients; 43% of subsequent morphine doses were followed with complete monitoring, and an additional 30% with at least partial monitoring. Adherence to the monitoring procedure fluctuated over the study period with no consistent upward or downward trend. A small number of children exhibited a reduced respiratory rate potentially indicating respiratory depression, but no child required antidote or respiratory support. Despite suboptimal guideline adherence, potential signs of respiratory depression were detected that might otherwise have gone unnoticed. This validates the improved guideline and suggests that some incidents may have remained undetected. Front-line staff must be involved to optimize change, champion the initiative, and promote patient safety.
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PMID:Improved practices for safe administration of intravenous bolus morphine in a pediatric setting. 2189 3


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