Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0022568 (keratitis)
 5,133 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Forty patients suffering from intractable unilateral trigeminal neuralgia involving more than one division of the trigeminal nerve were treated by percutaneous radiofrequency thermocoagulation of the trigeminal sensory root. The aim of the operation was to relieve the pain without producing dense sensory deficit in the face. This goal was achieved by making selective lesions in the sensory root with gradually increasing temperature 60 degrees C to 90 degrees C. Three to four consecutive lesions each for 60 seconds have been found to produce excellent pain relief in 77.7% with good and fair results in the rest. The recurrence rate has been found to be 15% during 2 years of follow-up. Considerable dysaesthesia was observed in 5% of cases. Corneal anaesthesia was found in 5% cases while one patient developed neuroparalytic keratitis. Transient trigeminal motor weakness was observed in 10% of patients.
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PMID:Percutaneous retrogasserian radiofrequency thermal rhizotomy for trigeminal neuralgia. 181 14

Percutaneous micro-compression of the trigeminal ganglion for trigeminal neuralgia, using the technique of Mullan and Lichtor (1983), with some modifications, was performed during the last five years, in our institution in 70 patients. 97.5% of the patients were initially relieved of their pain. There were 14 recurrences (20.5%). 9 of these patients underwent a second micro-compression with 8 excellent results. The follow up examination 6 to 60 months (average: 16.5 months) showed that 88.5% of the patients were free of pain (54 times after one micro-compression and 8 times after two). Sequellae are: --hypoesthesia: 14.3%, --loss of the corneal reflex without keratitis: 11.4%, --dysesthesias without anesthesia dolorosa: 11.4%. We think that this technique should be the first operation considered for trigeminal neuralgia, in the aged and poor cooperative patients, especially when V1 or V1-V2 pain is present, for symptomatic neuralgia (especially multiple sclerosis), or after recurrences after other procedures.
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PMID:[Microcompression of Gasser's ganglion. A treatment of essential facial neuralgia. Apropos of 70 cases]. 185 37

An outbreak of acute haemorrhagic conjunctivitis (AHC) occurred in Accra, Ghana, reaching a peak in July 1987. Individuals ranging from infants to adults over 50 years were infected, with those between 20 and 30 years being the most affected group. There was a female preponderance. Clinical features included conjunctivitis, subconjunctival haemorrhage and ocular pain. Some patients reported of blurred vision due to mild keratitis. Isolation of virus from clinical specimens of AHC patients was successful only in cells of human origin such as HeLa and FL. Coxsackie virus A24 variant (CA 24v) was identified as the aetiologic agent. This is the first report to associate CA 24v with an epidemic of AHC in Africa, south of the Sahara, which is outside the endemic area of Southeast Asia and the Caribbeans. This finding suggests that earlier outbreaks of AHC in Ghana and Africa may have been due to CA 24v but went undetected. The results of various tests performed during this study suggest that, at least, two antigenically different viruses of CA 24v circulated during the course of this epidemic.
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PMID:Epidemic acute haemorrhagic conjunctivitis due to Coxsackie virus A24 variant in Ghana. 196 35

We studied three patients with infectious keratitis that occurred after cyanoacrylate gluing despite prophylactic antibiotic therapy. Two patients developed culture-positive bacterial ulcers, one caused by a methicillin-resistant Staphylococcus aureus and the other by Haemophilus influenzae. The third patient developed a fungal keratitis. Two patients required penetrating keratoplasty. Each infection and perforation was concealed by the opaqueness of the glue. The pain of the infectious ulcers may have been obscured by the ocular surface irritation and drying induced by glue. Tissue toxicity, microbial colonization, use of bandage lenses, and long-term broad-spectrum antibiotics may precipitate glue-related corneal infections. Masking of underlying infection and the development of resistant organisms should be considered when using this mode of therapy.
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PMID:Infectious keratitis and cyanoacrylate adhesive. 201 49

This study reviews the results and complications of 162 percutaneous thermocoagulations of the gasserian ganglion in 124 patients with typical idiopathic trigeminal neuralgia. The mean duration of follow-up observation was 3.7 years (range, 1-6 years). One hundred eighteen of 124 patients continued to show complete pain relief 1 month after the operation, and at the end of follow-up observation, 83 of 124 patients (67%) continued to enjoy complete pain relief (recurrence rate, 28.2%). Anesthesia dolorosa occurred in 3% of cases, dysesthesia in 3%, and paresthesia in 17%; neuroparalytic keratitis with permanent reduction of visual acuity was observed in 2% of cases, permanent diplopia in 1%, permanent hearing deficit in 3%, and permanent impairment of mastication in 3%. We compare thermocoagulation with other surgical procedures (microvascular decompression, glycerol injection, and percutaneous decompression) used in the treatment of trigeminal neuralgia.
Clin J Pain 1990 Jun
PMID:Percutaneous controlled thermocoagulation in the treatment of trigeminal neuralgia. 213 10

From 1984 to 1989, 112 patients with typical drug-refractory trigeminal neuralgia were treated by retrogasserian glycerol injection. The present study assesses results and complications after a mean follow-up period of 3.5 years (range 0.1-5.5 years). One hundred and three of 112 patients (91.9%) showed complete pain relief 1 month postoperatively, and at the end of follow-up 80 patients (71.4%) were still enjoying complete pain relief (recurrence rate 20.5%). Abnormal facial sensations were noted in 49 patients, the most common complication being mild hypoesthesia (32% of patients), while paresthesia occurred in 19% of cases and dysesthesia in 3%. The corneal reflex was absent in 3% of patients and reduced in 5%. None of the patients developed anesthesia dolorosa, permanent masseter weakness, neuroparalytic keratitis, or diplopia.
Clin J Pain 1990 Dec
PMID:Retrogasserian glycerol injection: a retrospective study of 112 patients. 213 29

The authors report 144 cases of trigeminal neuralgia treated by percutaneous microcompression of the trigeminal ganglion (PMTG). The operation was performed under short-lasting barbiturate anesthesia without endotracheal intubation. Meckel's cave was cannulated with a No. 4 Fogarty catheter and the balloon was inflated for 1 minute. The average intraluminal pressure required for adequate compression of the ganglion was about 1200 mm Hg. All patients were initially relieved of their neuralgia. In a follow-up period ranging from 6 months to 4 1/2 years, 14 patients (9.7%) developed recurrence of pain between 10 and 35 months after surgery. Eleven patients underwent a second PMTG. All nine early failures and 10 of the 11 late recurrences occurred in cases with technical deficiencies. Most of the minor surgical complications observed were also related to avoidable technical errors. There were no anesthetic complications and no deaths. All patients developed mild to moderate postoperative hemifacial numbness with or without objective hypesthesia. Both subjective and objective deficits gradually diminished with time and were well tolerated. One year after the operation nearly 40% of the patients still had patches of slightly decreased sensation in one or more trigeminal divisions and 16% had mild dysesthesia. Anesthesia dolorosa or keratitis was not reported. The PMTG procedure is easy to perform and requires a short operative time and a brief period of hospitalization. It is well tolerated by patients, who describe it as a totally pain-free experience. Morbidity is minimal and recurrence of neuralgia does not seem to be higher than with alternative procedures.
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PMID:Percutaneous microcompression of the gasserian ganglion for trigeminal neuralgia. 221 75

Subcutaneous injection of 50 mg/kg capsaicin to newborn rats resulted in a marked decrease of heat pain sensitivity and neurogenic inflammation. There was, however, no significant difference between capsaicin-pretreated and control rats in the severity of neuroparalytic keratitis after surgical deafferentation of the eye. Retrobulbar injection of 100 microliters of 0.5% capsaicin produced keratitis-like corneal changes. These changes were not prevented by previous pretreatment with a total subcutaneous dose of 200 mg/kg capsaicin. The findings indicate that corneal changes after deafferentation are not due to excessive release of substance P and other neuropeptides from the degenerating afferent fibres.
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PMID:Neuroparalytic keratitis and capsaicin. 233 5

Long-term results (average follow-up, 9.3 years) obtained in 1000 consecutive patients suffering from cryptogenetic ("essential") trigeminal neuralgia treated with percutaneous thermorhizotomy are analyzed. Pain relief was obtained in 95% of the treated patients. Permanent morbidity was as follows: masseter weakness in 105 patients; oculomotor palsies in 5 patients; weakening of the corneal reflex in 197 patients, 6 of whom requested an ocular operation for keratitis; and painful dysesthesia in 52 patients, 15 of whom developed a painful anesthesia syndrome. There was a recurrence rate of 18.1%, and a correlation between postoperative sensory deficit and the cure rate was found. These results are discussed and compared to the results obtained with different techniques.
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PMID:Long-term results of percutaneous retrogasserian thermorhizotomy for "essential" trigeminal neuralgia: considerations in 1000 consecutive patients. 235 96

The primate cornea was examined ultrastructurally subsequent to ultraviolet radiation (UVR) (300 nm) exposures of 0.08 and 0.225 J/cm2. The lower exposure caused significant, but incomplete, destruction of the epithelium and mild edema of the posterior stroma. The higher exposure resulted in complete destruction of the epithelium, significant stromal swelling, and some decomposition of endothelial cells. Widespread intracellular edema of the endothelium was also noted with the higher exposure. The ultrastructural examination subsequent to these UVR exposures also helps to explain why UV-induced keratitis is so painful. The 0.08 J/cm2 exposure left the epithelial and subepithelial-stromal nerve plexuses intact, whereas the 0.225 J/cm2 exposure destroyed the epithelial axons but spared the subepithelial ones. These results suggest that the pain associated with UV keratitis results from the combined effect of epithelial cell loss and sparing of the subepithelial axons.
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PMID:Corneal damage in photokeratitis--why is it so painful? 238 84


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