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R Yeoh

Publications and source records attributed to R Yeoh.

8 recordsLinked to original sources

Spacer compliance after discharge following a mild to moderate asthma attack.

AIM: To assess MDIS usage in patients discharged from a children's hospital emergency department following a mild to moderate asthma attack. METHODS: Prospective observational study of 73 consecutive patients presenting to a children's hospital emergency department with a mild to moderate asthma attack. Demographic data, whether asthma literature/written MDIS instructions were provided, and who provided MDIS instructions (either a discharge coordinator or other emergency department staff) were noted. Parents of patients were telephoned after the first week following discharge and questioned about patient improvement, MDIS use/reasons for not using MDIS, and unscheduled presentations to their local doctor or hospital. RESULTS: Following discharge, 50/73 (68.5%) patients used MDIS exclusively (compliers), while 23/73 used nebulisers some or all of the time (non-compliers). There was no difference in patient improvement or unscheduled presentations between compliers and non-compliers. Most non-compliers 14/23 (60.9%) changed because of parental preference; ease of nocturnal nebuliser use was a possible factor. Compliance was associated with the age of the patient, spacer usage at hospital, the size of device used at hospital, and whether an information fact sheet was given. CONCLUSIONS: Most children discharged from the emergency department following a mild to moderate asthma attack continue MDIS use exclusively in the first week. MDIS compliance may be associated with knowledge, experience, and ease of spacer usage. The study shows that education for parents is crucial for MDIS compliance.

Administration, Inhalation↗

Capsular block syndrome and pseudoexpulsive hemorrhage.

Capsular block syndrome (CBS) has been recognized as a cause of immediate or delayed postoperative accumulation of fluid behind an intraocular lens/capsulorhexis complex. Hydrodissection-related rupture of the posterior capsule may be considered a variant of CBS that can manifest intraoperatively. We describe another intraoperative situation related to CBS in which fluid loculation during hydrodissection mimics a threatened expulsive hemorrhage.

Aged↗

Primary posterior chamber IOL implantation in penetrating ocular trauma.

This paper describes the experience of primary cataract extraction and posterior chamber IOL implantation in 11 eyes with penetrating ocular trauma. The primary surgical procedure consisted of repair of corneoscleral laceration, cataract extraction, posterior chamber IOL implantation and in certain cases, removal of intraocular foreign body and vitrectomy. 10 out of 11 cases had a post operative visual acuity of 6/18 or better, with 9 out of 11 having a post operative visual acuity of 6/12 or better. One case initially had a visual acuity of 6/24 but later developed retinal detachment with a visual acuity of 'hand movements'. Another patient developed a small localised retinal detachment during the tenth postoperative month but with successful surgery, attained a visual acuity of 6/6. The encouraging results suggest that this procedure may be recommended in carefully selected cases, under the management of an experienced surgeon.

Adult↗

Subretinal gas.

Two cases of subretinal gas are described. The circumstances in which this complication arose are important in understanding the mechanism by which gas gains access into the subretinal space. Evacuation of subretinal gas by posturing should be avoided as this leads to an increase in the extent of the retinal detachment and its extension anterior to involve the nonpigment epithelium of the pars plana. A technique for removing subretinal bubbles of expanding gases using vitrectomy and fluid/gas exchange is recommended.

Adult↗

Acanthamoeba keratitis.

We report on four patients seen during the past two years who had acanthamoeba keratitis. One is described in detail. We believe that acanthamoebic eye infection is not rare. An immunofluorescent technique for localisation of amoebae and cysts is described. Our patients' response to propamidine and dibromopropamidine therapy was complicated by problems of toxicity.

Acanthamoeba↗