Conditioning of ictal and interictal behaviors in rats by amygdala kindling: context as the conditional stimulus

The authors showed that conditional effects of the stimulation environment modulate both the ictal and interictal behaviors of rats subjected to amygdala kindling. Rats received 53 stimulations to the left basolateral amygdala in 1 conditional stimulus (CS) context (CS+) and 53 sham stimulations (the stimulation lead was attached but no current was delivered) in another context (CS-), quasirandomly over 54 days. Three kinds of conditional effects were observed. First, after several stimulations, less ambulatory activity, more freezing, and less rearing reliably occurred in the CS+ context than in the CS-context. Second, after 45 stimulations, all of the rats chose the CS- context over the CS+ context in a conditioned place preference test. Third, when the rats were finally stimulated in the CS- context, their motor seizures were less severe: Latencies were longer, motor seizures were shorter, convulsive patterns were of a lower class, and there were fewer falls.     

BILATERAL INFRAORBITAL NERVE BLOCK IS SUPERIOR TO PERI-INCISIONAL INFILTRATION FOR ANALGESIA AFTER REPAIR OF CLEFT LIP

Cleft lip repair is a common operation in infants and requires that the child is pain-free during the postoperative period so that handling does not affect the integrity of the delicate surgical site. This study was designed to compare the efficacy and duration of effect of 0.125% bupivacaine given preoperatively as a bilateral infraorbital nerve block with peri-incisional infiltration of the same local anaesthetic for postoperative analgesia in cleft lip repair. It was a randomised, double blind, prospective study in 30 children aged 4-20 months (ASA grade 1). After a standard induction, group A (n = 15) were given a bilateral infraorbital nerve block with 0.125% bupivacaine and group B (n = 15) had peri-incisional infiltration with the same solution. No additional systemic analgesics were given before or during the operation. Intraoperative monitoring comprised measurement of heart rate and blood pressure and postoperatively pain relief was recorded using a behavioural pain relief score. The heart rate, respiratory rate, and blood pressure were also monitored at 0, 1, 2, 4, 8, and 24 hours after tracheal extubation. The results showed that group A had significantly better pain relief (higher scores) than group B for eight hours postoperatively (p < 0.05). The analgesic requirement in group B became significant at two hours postoperatively, while group A had significant analgesic requirements only after eight hours. The significant rise in heart rate and blood pressure that accompanied tracheal intubation in both groups suggested that while both methods of analgesia may be adequate to prevent responses to skin incision, they do not substitute for adequate systemic analgesia during the operation. We conclude that infraorbital nerve block with 0.125% bupivacaine provides better and more prolonged analgesia than peri-incisional infiltration in cleft lip repair.     

Pericholecystic adhesions in single v multiple gallstones and their consequences for laparoscopic cholecystectomy

BACKGROUND: Adhesions are amongst the common reasons for open conversion of laparoscopic cholecystectomy. It is not clear whether this problem is more common with single or multiple gallstones. PATIENTS AND METHODS: The clinical records of 110 patients with chronic cholelithiasis harboring multiple stones in the gallbladder (multiple stone group; MSG) and 45 patients with single stones in the gallbladder (SSG) undergoing laparoscopic cholecystectomy were analyzed for differences in the clinical presentation and outcome with special reference to the incidence of pericholecystic adhesions, size of the stones, and their implications for conversion and complications. RESULTS: Patients in the SSG had a significantly higher incidence of dense pericholecystic adhesions in the region of the porta hepatis (P = 0.003). Eleven patients in the SSG (24.4%) were converted to open cholecystectomy. Dense pericholecystic adhesions around the porta hepatis alone contributed to nine of these conversions (81.8%). The size of the stones was significantly greater (P < 0.001) in those patients of the SSG who required conversion to open cholecystectomy. Thirteen patients of the MSG (11.8%) required conversion to open cholecystectomy. Dense pericholecystic adhesions alone contributed to conversion in four cases (30.7%), and the size of the gallstones was not significantly different (P = 0.981) in patients with or without conversion to open cholecystectomy. There was no difference in the clinical presentation or complications in the two groups of patients. CONCLUSION: Dense adhesions in the porta hepatis are significantly more common in patients with single stones and are the most common reason for open conversion.     

BILE DUCT CYSTS: PRESENTATION IN ADULTS

Bile duct or choledochal cysts are rare congenital anomalies and presentation in adult is infrequent. Seven cases of type I/IV bile duct cysts presenting in adult life have been treated by the authors during the past 2 years. The diagnosis was made using a combination of ultrasound and cholangiography (endoscopic retrograde cholangiopancreatography/percutaneous transhepatic cholangiography). All cases underwent total cyst excision and Roux-en-Y hepaticojejunostomy. There were no operative complications and all patients were asymptomatic in the follow-up period, which ranged from 3 to 23 months.     

Haemangioma maxillary antrum

A case of haemangioma maxillary antrum is., reported. Since fatal cases are on record, it is suggested that the possibility of haemangioma of maxillary antrum should be kept in mind whenever there is no apparent lesion in nose and nasopharynx in case of recurrent unilateral epistaxis before undertaking any surgery.     

Dhat syndrome: A culture-bound sex neurosis of the orient

The Indian Dhat syndrome is a culture-bound symptom complex. The clinical picture includes severe anxiety and hypochondriasis. The patient is preoccupied with the excessive loss of semen by nocturnal emissions. There is a fear that semen is being lost. and mixed in urine. A study was carried out to investigate the cultural basis of the Dhat syndrome. One hundred and seven respondents from the general public were interviewed. A vignette describing an individual having nocturnal emissions was read aloud to the respondents. Attitudes toward nocturnal emission, its causes, and its management were investigated. A large segment of the general public from all socioeconomic classes believed that semen loss is harmful. Seminal fluid is considered an elixir of life both in the physical and in the mystical sense. Its preservation guarantees health, longevity, and supernatural powers. This belief is more frequent in lower socioeconomic classes. The susceptible individual reacts to the prevalent belief system and to the fears of semen loss. The symptoms usually disappear if the misconceptions about semen loss are effectively dealt with. It is expected that with increasing literacy and progress in sex knowledge the syndrome will become less common.