Background:Optimal pain treatment with minimal side effects is essential for early mobility and recovery in patients undergoing total knee arthroplasty (TKA). We investigated the effect of pregabalin as an adjuvant for postoperative analgesia provided by opioid-based patient-controlled epidural analgesia (PCEA) in such patients.Materials and Methods:Forty patients undergoing unilateral primary TKA were randomly assigned to two equal groups, to receive either placebo or pregabalin 75 mg twice a day. The drug was administered orally starting before surgery and was continued for 2 days after surgery. Anesthetic technique was standardized. Postoperatively, static and dynamic pain was assessed by verbal rating score. Mean morphine consumption, PCEA usage, rescue analgesic requirement, and overall patient satisfaction were also assessed. Treatment emergent adverse drug reactions were recorded.Results:Mean morphine consumption was significantly reduced by pregabalin. Postoperative pain (both static and dynamic) and PCEA consumption too was significantly reduced in the pregabalin group during the first 48 h after surgery. This group needed fewer rescue analgesics and recorded higher overall patient satisfaction. Pregabalin-treated patients had fewer opioid-related adverse reactions like nausea, vomiting, and constipation. Dizziness was noted in two of the patients receiving pregabalin. There was no statically significant difference in the incidence of sedation in the two groups.Conclusions:Oral pregabalin 75 mg started preoperatively is a useful adjunct to epidural analgesia following TKA. It reduces opioid consumption, improves postoperative analgesia, and yields higher patient satisfaction levels.
Background and Aims:Acute postoperative pain is still a neglected and unresolved issue in day to day practice. Acute pain services were conceived three decades ago to form a dedicated team to monitor pain assessment and treatment as per laid down pain protocols and guidelines. The concept of acute pain service (APS) is slowly evolving in India.Material and Methods:This nationwide questionnaire survey was conducted to identify the status of postoperative pain, the prevalent treatment practices, and the prevalence of acute pain services in India. An electronic communication was sent to 4000 Indian Society of Anesthesiologists life members.Results:We received only 146 responses mainly from faculties/consultants from few corporate hospitals or medical colleges. About 68 APSs were functioning, however, 20 APS do not have any training programs and 34 have no written protocols. Anesthesiologists were involved in postoperative pain management only when epidural analgesia was employed.Conclusion:This survey found that majority of anesthesiologists agree to establish an APS, however administrative issues seem to be a major barrier.
Ketamine, a N-methyl-D-aspartate receptor antagonist inhibits central sensitization due to peripheral nociception thus potentiating the analgesic effect of morphine. The purpose of our study was to evaluate the effect of adding small-dose ketamine in a multimodal regimen of postoperative patient-controlled epidural analgesia (PCEA). One hundred patients of American Society of Anesthesiologists physical status I-II, undergoing major upper abdominal surgery were randomly allocated to two groups. Group I received PCEA device containing bupivacaine hydrochloride 0.0625% and morphine sulphate (preservative free) 0.05mg/ml. Group II received PCEA device containing bupivacaine hydrochloride 0.0625%, morphine sulphate (preservative free) 0.05 mg/ml and ketamine hydrochloride (preservative free) 0.2 mg/ml. The mean morphine consumption in group I after 1stand 2ndpostoperative day was 8.38±2.85 and 7.64±1.95 mg, respectively, compared to 6.81±1.35 and 6.25±1.22 mg (P<0.05) in group II. Although group II consumed significantly less morphine, pain relief at rest and at movement after 6, 12, 24 and 48 hours, postoperatively was significantly better in group II (P<0.05) than in group I. These findings suggest that adding small-dose ketamine to a multimodal PCEA regimen provides better postoperative analgesia and reduces morphine consumption.
Introduction:To compare pain scores at rest and ambulation and to assess patient satisfaction between the different modalities of pain management at different time points after surgery.Settings and Design:The ASSIST (Patient Satisfaction Survey: Pain Management) was an investigator-initiated, prospective, multicenter survey conducted among 1046 postoperative patients from India.Material and Methods:Pain scores, patient's and caregiver's satisfaction toward postoperative pain treatment, and overall pain management at the hospital were captured at three different time points through a specially designed questionnaire. The survey assessed if the presence of acute pain services (APSs) leads to better pain scores and patient satisfaction scores.Statistical Analysis:One-way ANOVA was used to evaluate the statistical significance between different modalities of pain management, and paired t-test was used to compare pain and patient satisfaction scores between the APS and non-APS groups.Results:The results indicated that about 88.4% of patients reported postoperative pain during the first 24 h after surgery. The mean pain score at rest on a scale of 1–10 was 2.3 ± 1.8 during the first 24 h after surgery and 1.1 ± 1.5 at 72 h; the patient satisfaction was 7.9/10. Significant pain relief from all pain treatment was reported by patients in the non-APS group (81.6%) compared with those in the APS (77.8%) group (P < 0.0016).Conclusion:This investigator-initiated survey from the Indian subcontinent demonstrates that current standards of care in postoperative pain management remain suboptimal and that APS service, wherever it exists, is yet to reach its full potential.
Background:The prevalence of chronic pain (CP) is well described in Europe, America, and Australia. However, little knowledge is available of the prevalence of CP within Asia or Southeast Asia. Given the cultural and genetic variation in pain causation, manifestation, and reporting, the findings of previous western studies cannot be extrapolated to Asian countries. A prevalence study was needed to be carried out to quantify the magnitude and impact of CP in the adult population in India.Methods:Two sets of questionnaires were designed. The first, a screening questionnaire was used telephonically to identify the prevalence of CP, and should there be CP; the second, a detailed questionnaire was administered, to characterize the features and impact of pain. The interviews were carried out face-to-face.Results:A total of 4326 Indian patients were screened, and 836 completed a detailed pain questionnaire during 2006. The prevalence of CP was found to be 19.3% (n = 836). There was a higher prevalence in females (25.2%). Pain prevalence increased steeply beyond the age of 65 years old. There was a significant impact of CP on work and daily function.Conclusion:This Indian adults' population survey about CP found a higher prevalence of CP as compared to other Asian pain prevalence studies; however, the impact of pain was just as significant. In a rapidly aging population, CP is emerging as a significant healthcare problem which may likely to exert an increasing toll on the existing social infrastructure within the next two decades.
Neuropathic pain is still an under-diagnosed and undertreated problem in third world countries. This retrospective study was undertaken to detect the prevalence, etiology and treatment profile of neuropathic pain in cancer. During January-December 2007, 716 new cancer pain patients were examined in Tata Memorial Hospital Pain Clinic. A total of 180 patients with a mean age of 47.14 yrs were found to have neuropathic pain characteristics on the basis of clinical impression, site of pain and the underlying cause i.e. due to tumor itself or cancer therapy. Head and neck cancer (32.2%) was found to be the most common cause of neuropathic pain, followed by breast (20.6%), thoracic (14.4%), genitourinary or gynecology (10.0% each), GI (9.4%), and medical oncology (2.8%). About 56% patients were post surgery, 44.4% post chemotherapy and 51.1% patients were post radiotherapy. The most common site of pain was thoracic (36.7%) due to primary or secondary metastatic disease. Pricking type of pain was the most characteristic feature (47.8%) followed by shooting pain (38.3%). The mean pain score was 5.96 +/- 1.5 (SD) and mean duration (months) of pain was 2.8 +/- 2.5. Neuropathic pain was found commonly associated with somatic pain (59.4%). The most common pharmacological agents prescribed were: tricyclic antidepressants (93.9%), anticonvulsants (66%), Opioids (85%), and nonsteroidal anti-inflammatory drugs (NSAIDs) (97.2%). Only 35% patients followed up more than once at the pain clinic. The most common and challenging patients were of orofacial pain. Nerve blocks techniques have a limited role in neuropathic pain.
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