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[Orbital decompression in Graves-Basedow disease--preliminary report].

UNLABELLED: The aim of the paper is to present our initial experience in surgical treatment of patients with malignant exophthalmos. MATERIAL AND METHOD: from 2001 to 2004, 11 patients with malignant exophthalmos were treated in our Department. Preoperative exophthalmos ranged from 22 to 40mm, asymmetric exophthalmos was diagnosed in 5 cases. Orbital decompression was indicated in patients with ophthalmopathy (11), decreased visual acuity (4), lagophthalmos (3). Decompression included orbital floor, medial and lateral wall in 8 patients, orbital floor and medial wall in 3. RESULTS: in 5 patients exophthalmos decreased 5-8 mm, in 5 cases 2-3 mm, 1 patient remained without improvement. CONCLUSIONS: 1. The treatment of malignant exophthalmos requires multidisciplinary approach. 2 Orbital decompression should be followed by surgical correction of eyelids and eyeball muscles.

Decompression, Surgical↗

Verres needle decompression of distended gallbladder to facilitate laparoscopic cholecystectomy in acute cholecystitis: a prospective study.

BACKGROUND/AIMS: Grasping a thick and distended gallbladder is one of the most common technical difficulties of laparoscopic cholecystectomy in acute cholecystitis. This prospective study was conducted to investigate the use of the Verres needle decompression method to facilitate laparoscopic cholecystectomy in acute cholecystitis. METHODOLOGY: Between April 1998 and April 2002, patients with acute cholecystitis scheduled to receive laparoscopic cholecystectomy emergently were included. A Verres needle was applied through the subcostal area to decompress the acute inflamed distended gallbladder after establishing pneumoperitoneum. RESULTS: In total 54 patients, 30 male and 24 female with mean age 53.50 years (range 21-80), consented to the operation. Laparoscopic cholecystectomy was performed successfully in 44 patients. The conversion of laparoscopic cholecystectomy to open surgery was needed in 10 patients (conversion rate: 18.5%). The failure to identify the triangle of Calot is the only risk factor associated with conversion. The more severe acute cholecystitis is, the higher the conversion rate is (11.5% in uncomplicated cholecystitis, 31.6% in complicated cholecystitis). No bile duct injury was noted. Postoperative morbidity happened in three cases: two port-site discharge and one subphrenic abscess. No mortality occurred. CONCLUSIONS: Verres needle decompression of the acute inflamed gallbladder did facilitate laparoscopic cholecystectomy in acute cholecystitis with low conversion rate.

Acute Disease↗

[Clinical analysis of 2643 cases of trigeminal neuralgia treated by microvascular decompression].

OBJECTIVE: To evaluate the clinical effects of microvascular decompression in treating trigeminal neuralgia. METHODS: Surgical experience and operative findings of 2643 cases of trigeminal neuralgia treated by microvascular decompression were analyzed retrospectively. RESULTS: Two thousand four hundred and eighty-seven of 2643 cases were cured, 76 cases were ineffectiveness, 48 cases were effectiveness and 31 were ineffective. One patient died. Two thousand one hundred and thirty-six cases were followed up in 3-240 months, 1918 cases were cured, 85 cases were obviously effective, 39 cases were effective and 30 were ineffective. Sixty-four cases were pain relapsed and 37 cases were cured by second operation among them. CONCLUSION: The etiology of trigeminal neuralgia is that the unusual vascular oppress the root entry zone, and arachnoid membrane circling the nerve is thickened and sticked. To untie the arachnoid membrane and decompress the offending vascular is the effective methods in treating trigeminal neuralgia.

Adolescent↗

[Endoscopic decompression of optic canal].

OBJECTIVE: To evaluate the effectiveness of endoscope in the treatment of optic nerve injury. METHODS: Thirteen patients with fracture at the inner and lower walls of optical canal underwent endoscopic decompression. The posterior 1/3 of the middle concha, the posterior ethmoid sinus and sphenoid sinus were opened, chips of bone and old hematocele were scavenged, and the optic ring of the optic canal was polished; however, the sheath of the optic nerve remained intact. In 2 cases with the dura broken at the cranial part of optic nerve, the broken site was covered with mucosa of middle concha, and the sphenoid sinus and the middle nasal meatus were covered with oil ribbon gauze. Three days after the operation, the ribbon gauze was pulled put, however, if cerebro-spinal fluid leakage was suspected, the ribbon gauze was pulled out 7-10 days after. After the operation the visual acuity improvement reaching one grade or more and improvement of visual field were defined as effective. RESULTS: Five of the 6 patients without light perception before the operation showed improvement in visual acuity. The other 7 patients with residual visual acuity all recovered to different extents. CONCLUSION: A mini-invasive surgery, decompression of optic canal with endoscope is effective in decompressing optic nerve, decreasing the injury of optic nerve, and the patients recover quickly after operation.

Adolescent↗

[Clinical analysis of facial nerve decompression on the treatment of facial paralysis].

OBJECTIVE: To study the occasion and curative effect of facial nerve decompression on the treatment of facial paralysis. METHOD: Facial nerve decompression was applied to 57 cases of severe facial paralysis from 1997 -2004 in our hospital. They were divided into two groups: A group received treatment within two months and B group after two months. Their curative effects were compared and the chi2 test between groups was applied. RESULT: The clinical curative ratio of group A was significantly higher than that of group B (P < 0.05). CONCLUSION: To treat facial paralysis, the application of facial nerve decompression at early stage can improve the clinical curative ratio significantly.

Adolescent↗

[Automatic decompression with micro-catheter for open and tension pneumothorax].

OBJECTIVE: To evaluate the feasibility of treating pneumothorax with automatic intermittent decompression with micro-catheter instead of traditional thorax water sealed drainage (TWSD). METHODS: The automatic decompression instrument (ADI), which decompressed intermittently with programmed control, was designed and assembled by the authors (Patent No. ZL 01242081.6). A prospective study of the efficacy of this device was conducted in 87 pneumatothorax cases, and the results were compared with those of TWSD. RESULTS: The average time of closure in ADI group was 4.12+/-0.98 days, which was significantly shorter than that with TWSD (6.83+/-2.06 days, P<0.01). The incidence of complications was also significantly lower in ADI patients (P<0.01), and none of them developed severe complications. Clinical cure was achieved in all the patients in ADI group except for two patients who gave up treatment voluntarily and one transferred for open surgery. CONCLUSIONS: Application of ADI allows faster healing and safer and easier operation, and causes fewer complications and less pain with shortened hospital stay as compared with conventional therapy for open and tension pneumothorax.

Adolescent↗

[Treatment of multi-segmental lumbar intervertebral disc protrusion with limited recessive decompression].

OBJECTIVE: To retrospectively analyze the clinical and imaging features of multi-segmental lumbar intervertebral disc protrusion and its treatment with the limited recessive decompression operation. METHODS: Twenty-two patients (14 males and 8 females, aged 49-68 years) were admitted to hospital from March 1999 to March 2004. They suffered from multi-segmental lumbar intervertebral disc protrusion that involved L1-S1 and were treated with the limited recessive decompression operation. RESULTS: The follow-up for 4-21 months showed that 16 of the patients had an excellent outcome, 5 had a good outcome, and 1 had fair outcome. There were no such operative complications as nerve root lesions and putamen lesions. CONCLUSION: The limited recessive decompression operation is one of the available good treatments for multi-segmental lumbar intervertebral disc protrusion. It solves problems of herniation and stenosis and maintains stability of the spine.

Aged↗

[Internal orbital decompression in uncompensated edematous exophthalmos].

The efficiency of internal orbital decompression was evaluated in uncompensated edematous exophthalmos (EE). Twenty-two patients aged 17-65 years who had EE (30 orbits) were followed up. EE in a subcompensation and decompensation stage occurred in 12 (17 orbits) and 10 (13 orbits) patients, respectively. When glucocorticoid therapy was ineffective, internal orbital decompression was made in order to preserve visual functions. Surgery was performed via transconjunctival approach (Brovkina, 2004). After surgery, exophthalmos diminished by an average of 4.6 and 5.6 mm in a subcompensation and decompensation stage, respectively. There was a substantial reduction in periorbital tissue edema, in conjunctival changes, corneal opacity, and optical neuropathy to the extent of complete regression. Internal orbital decompression is effective in uncompensated forms of EE, as appeared as a significant alleviation of its clinical symptoms and as preserved or increased baseline visual acuity.

Adolescent↗

[Facial nerve decompression].

Facial nerve palsy is usually managed conservatively, but in some cases may require surgical intervention. In cases in which the continuity of the nerve is not disrupted, decompression is the procedure of choice. No reports were found in the literature addressing this group separately. We report the results of 33 facial nerve decompressions conducted in the Sheba Medical Center through the years 1985-2002. Fifteen of our patients were operated on using the middle cranial fossa approach, 12 underwent mastoidectomy and 6 were treated using the combined middle cranial fossa mastoidectomy approach. Twenty-four (72.7%) underwent surgery for temporal bone fracture and the rest (27.3%) due to other reasons (iatrogenic injury, infection). The postoperative results were determined using the House-Brackmann (HB) scale. Patients who were operated on more than 30 days after complete palsy achieved better results than those operated on earlier than 30 days. The total average HB score was 3.2. The followup results are significantly worse in patients after less than 3 months, as compared to those with 3 to 12 months followup. On the basis of our experience, facial nerve decompression achieves good functional results. We found no advantage in early vs. late intervention with regard to results. The final results can be determined only a year after surgery.

Bell Palsy↗

Bifrontal decompressive craniotomy for malignant brain edema.

OBJECTIVE: To review the outcome of bifrontal decompressive craniotomy used for the treatment of malignant brain edema due to different etiologies. METHODS: The study was carried out at King Khalid University Hospital, Riyadh, Kingdom of Saudi Arabia during the period from January 2000 to June 2005, and included all patients who had malignant brain edema due to different etiology and were treated with bifrontal decompressive craniotomy after failure of aggressive medical treatment. RESULTS: Ten patients were included in the study, 6 males and 4 females; the mean age was 24 years. Seven patients had severe head injury, 2 had aneurysmal subarachnoid hemorrhage, and one had large calcified olfactory groove meningioma. Clinically, all patients, except one, had Glasgow coma scores more than 3 before surgery, and operation was performed in all patients once clinical deterioration was observed and diagnosis confirmed by CT brain scan. The outcome of surgery was good in 70%, poor in 20%, and mortality was 10%. The mean hospital stay was 85 days. CONCLUSION: Bifrontal decompressive craniotomy offers immediate reduction of intracranial pressure to its normal levels, and improves the outcome of malignant brain edema whatever its cause, it should be performed once clinical deterioration is observed.

Adolescent↗

[Decompression and monitor of facial nerve during cholesteatoma surgery in petrous part of temporal bone].

OBJECTIVE: To study the application of facial nerve monitoring and to estimate the therapeutic effectiveness of the total decompression of facial nerve during the surgery for cholesteatoma in petrous bone by middle cranial fossa-mastoid process approach. METHOD: Eight cases who suffered from chronic suppurative otitis media (cholesteatoma type) in petrous bone were treated with open technique, three other cholesteatoma cases whose tympanic membranes were intact was treated with close technique. Monitoring for facial nerve integrity during operation was applied. Total decompression of facial nerve was performed in all patients. House-Brackmann grading system was used to evaluated the recovery of facial nerve function. RESULT: Facial paralysis recovered gradually during the period of 3 to 6 months after operation. After 6 to 12 months follow-up in 11 cases, 1 case regained basically normal status, 9 cases recovered to mild facial paralysis and 1 case still needed further follow-up. There was no recurrence of cholesteatoma in all patients. CONCLUSION: Middle cranial fossa-mastoid process combining approach technique is effective for cholesteatoma in petrous bone and total decompression of facial nerve at the same stage. Nerve monitor is helpful in orientating facial nerve during operation and in preventing possible damage to the facial nerve.

Adolescent↗

[Preoperative biliary decompression in patients with malignant tumor of duodenal major papilla].

Experience of surgical treatment of 241 patients with malignant tumor of duodenal major papilla in 1992-2005 yrs was analyzed. In 95 patients the treatment was conducted in two stages, the first of which have had included biliary decompression. There were analyzed 18 potential risk factors for postoperative complications occurrence. Preoperative biliary decompression conduction have had constituted one of the risk factors for postoperative complications occurrence. There were proposed strict recommendations concerning preoperative biliary decompression conduction in patients with malignant tumor of duodenal major papilla.

Adult↗

Hyperbaric oxygen therapy: treatment for spinal cord decompression sickness.

Spinal cord injury (SCI) may result from decompression sickness associated with sport and commercial diving. Decompression sickness is caused by the formation of gas bubbles in the vessels and tissues secondary to a reduction in ambient pressure. A complete or incomplete spinal cord injury may result from decompression sickness. Recompression and hyperbaric oxygen therapy is the primary treatment. The use of hyperbaric oxygen therapy (HBO) as a treatment for these injuries can greatly influence the patient's outcome. Early intervention in a recompression chamber may result in complete recovery. If treatment is delayed however, the prognosis for recovery is poor.

Decompression Sickness↗

Decompression sickness in the Singapore Mass Rapid Transit Project.

In the Singapore Mass Rapid Transit Project (MRT), 11 km of underground tunnels were built using compressed air. 1,737 compressed air workers (CAWs) were employed in the project. They underwent 188,538 man decompressions at the various compressed air worksites. 160 CAWs developed Type I decompression sickness (DCS) and 4 developed Type II DCS. This gave an overall incidence of 0.087%. The adoption of strict medical selection, strict adherence to decompression procedures and the provision for acclimatization of newstarters contributed greatly to this low incidence. Prompt treatment of DCS accounted for the low relapse rate. The clinical presentation of DCS is discussed here. Prevention of DCS by worksite environmental and work-practice monitoring are advocated.

Decompression Sickness↗

Decompression sickness affecting the temporomandibular joint.

Two cases of pain-only decompression sickness of the temporomandibular joint following altitude chamber exposure are presented. A detailed interview of both individuals revealed no other joint involvement or other complaints. A careful neurologic examination failed to disclose abnormalities. In both cases, the pain resolved completely with compression therapy, supporting the diagnosis of decompression sickness. Decompression sickness limited to this small joint is extremely rare, and may be easily confused with other causes of joint pain.

Adult↗

[Comparison of the readings of the digital decompression meter with hyperbaric chamber tests].

An estimation of the risk incurred through the use of digital decompression computers used by the diver must be based on comparisons with hyperbaric chamber tests. We compared the decompression indications displayed by different commercial devices to depth/bottom time profiles for which hyperbaric chamber experiments have given us the relevant information on types and frequency of decompression sickness.

Decompression↗

Primary duodenorrhaphy and nasogastric decompression in the treatment of duodenal injury.

A retrospective analysis of 18 cases of duodenal trauma is presented. Perforations (in 10 cases) were sutured in two layers, using absorbable material, and intramural hematomas (8 cases) were left to resolve spontaneously. Nasogastric intubation was the only method of intestinal decompression, and was used in both patient groups. There were no direct duodenal complications. The mean hospital stay was 14 days. Primary repair with absorbable sutures combined with a few days of nasogastric decompression seems to be a safe and adequate method of managing uncomplicated duodenal perforations. Intramural duodenal hematomas need no intervention except nasogastric decompression.

Adolescent↗

Lack of bubble formation in hypobarically decompressed cells.

Suspensions of human erythrocytes or of unicellular microorganisms (Tetrahymena pyriformis, Euglena gracilis, Escherichia coli, and Microcyclus aquaticus) were equilibrated with nitrogen gas pressures up to 200 atm and rapidly decompressed to hypobaric pressures below the vapor point of water. The intracellular environments proved to be very tolerant to the gas supersaturations induced. None or only a few cells were damaged in each case, and bubbles were never observed intracellularly after decompression. In view of such extreme tolerances, it is doubtful that bubbles originate intracellularly during decompression of multicellular organisms, in which bubbles occur with far lower gas supersaturations, unless the tolerances are greatly affected by extensive mechanical deformations of the cells or by the presence of internalized particles with bubble-promoting properties.

Animals↗