1,720,960 research outputs found
Correlation between the Severity Prediction Index score (SPI-2) and tear production in 100 critically ill dogs admitted to the intensive care unit
No full texturpose: To determine the relationship between the severity of a systemic disease and tear production (TP) in critically ill dogs admitted to the intensive care unit. Methods: One hundred dogs of various breeds and both sexes were enrolled in the study. Inclusion criteria were as follows: presence of a severe systemic disease, no anesthesiological procedures within the previous 24 h, and no therapy with drugs that could interfere with TP. Another inclu- sion criterium was the absence of any ocular abnormalities assessed by slit-lamp biomi- croscopy, indirect ophthalmoscopy, and applanation tonometry preceded by the Schirmer Tear Test type I in both eyes. For each dog the illness severity was calculated by a diagnosis independent score (Severity Prediction Index - SPI-2) which predicts probability of survival based on variation of 7 clinical parameters within 24 h of admission. Data were statistically analyzed and the Spearmann test was used to detect a possible correlation between SPI-2 score and TP. Results: In the 53 male and 47 female dogs no statistical difference in TP was found between left and right eyes. No significant effect of both, age and body weight on TP was detected. A difference related to gender was found, with intact male dogs showing a lower TP. The variables SPI-2 and TP in the critically ill dogs were correlated (P < 0.0001) and a positive correlation was detected (rs 0.957). Conclusion: This study demonstrated that tear production tends to decrease in dogs with lower SPI-2 scores, in other words in the more critically ill dogs
UNILATERAL PERSISTENT HYPERPLASTIC TUNICA VASCULOSA LENTIS/PERSISTENT HYPERPLASTIC PRIMARY VITREOUS (PHTVL/PHPV) IN TWO WIREHAIRED DACHSHUNDS FROM THE SAME LITTER.
No full textTo describe unilateral PHTVL/PHPV associated with retinal dysplasia and cataract formation in the contralateral eye in two 1-year-old female Wirehaired Dachshunds from the same litter
Tear production and intraocular pressure values in captive lizards Pogona Vitticeps
No full textPurpose: To determine reference values for tear production and intraocular pressure (IOP) in Pogona vitticeps. Methods: Eighteen healthy, captive Pogona vitticeps of both sexes, average age of 30.6 months (range 20–49 months) were enrolled in the study. All animals underwent a physical examination. Slit-lamp biomicroscopy and indirect ophthalmoscopy with 78-diopter lens were performed in both eyes. Tear production was measured by the Phenol Red Thread test (PRTt) OU. IOP was bilaterally assessed by rebound tonometry (Tonovet"). Ophthalmic parameters were evaluated immediately after each animal was pulled out of the terrarium. Snout-to-vent length (SVL) was measured for each animal. To test for differences between sexes, and left and right eye, a Mann-Whitney test and a two-sample t-test were used in PRTt and IOP, respectively. A Spearman test was used to verify correlations between SVL and PRTt, and Pearson test to verify IOP. Data were expressed as mean+/-SEM. Results: no ocular abnormalities were observed. SVL was 19.75 +/- 0.44 cm (range 16–24 cm). PRTt values in the left and right eyes were 5.61 +/- 0.52 mm/15 s (range 3–10 mm/15 s) and 5.50 +/- 0.51 mm/15 s (range 2–10 mm/15 s), respectively. IOP values in the left and right eyes were 3.29 mmHg +/-0.15 mmHg (range 2–4.33 mmHg) and 3.50 +/- 0.14 mmHg (range 2.66– 4.66 mmHg), respectively. No significant differences were detected between sexes, left and right eyes for both intraocular pressure and tear production. No correlation was found between SVL and the two ocular parameters measured. Conclusions: This study provides reference values for tear production and IOP in the Pogona Vitticeps
Exophthalmos associated to orbital zygomatic mucocele and complex maxillary malformation in a puppy
Full text linkA case of exophthalmos due to zygomatic mucocele in a puppy with ipsilateral segmental maxillary atrophy is reported. A 7-month-old, mixed breed, male dog suffered the sudden-onset of unilateral painful exophthalmos and a gradual swelling of the right temporal region. A compressing, right retrobulbar mass was observed by ultrasound. Computed tomography revealed a large multiloculated cyst-like lesion of the right zygomatic gland projecting into the orbital space, thus displacing the eyeball. The ipsilateral molar part of the maxillary bone was underdeveloped, besides showing crowded, abnormal, multiple, unerupted maxillary molar teeth in the caudal maxillary region. Modified lateral orbitotomy and a selective caudal maxillary bone access were performed. The cyst-like lesion was removed and the zygomatic gland and the wall was collected for histology, which confirmed the mucocele. Clinical and imaging examinations six months after surgery showed neither recurrence of the mucocele nor ocular abnormalities. A possible common pathogenic mechanism involving these two conditions could be hypothesized
Effects of pupil dilation with topical 0.5% tropicamide on retinal vascular parameters assessed by VAMPIRE® software in healthy cats
Full text linkOur study investigates the effects of mydriasis obtained with topical 0.5% tropicamide on retinal vascular parameters evaluated in cats using the retinal imaging software: Vascular Assessment and Measurement Platform for Images of the Retina (VAMPIRE®). Forty client-owned healthy adult cats were included in the study. Topical 0.5% tropicamide was applied to dilate only the right pupil. The left eye was used as a control. Before dilation (T0), infrared pupillometry of both pupils was performed and fundus oculi images were taken from both eyes. Right eye fundus images were then captured 30 min after topical application of tropicamide (T30), when mydriasis was achieved. The retinal vessel widths (3 arteries and 3 veins) were measured with VAMPIRE® in four standard measurement areas (SMA) identified with the letters A, B, C, D. Average value of the 3 vessel widths was used. After normality assessment, the t-test was used to analyse the mean difference in vascular parameters of the left and right eyes at T0 and T30, with p set <0.05. The two eyes showed no statistical differences in pupil and vascular parameter measurements at T0. At T30, only one artery measurement of the right eye (SMA A-peripapillary area) showed a small but statistically significant mean vasoconstriction of approximately 4%. The results indicate that local application of 0.5% tropicamide seems to be associated with a small retinal arteriolar vasoconstriction as assessed by VAMPIRE® in cats. However, this change is minimal, and should not affect the interpretation of the results when VAMPIRE® is used.</p
Complex maxillary malformation with orbital zygomatic mucocele in a puppy: a case report
No full textPurpose: To describe a zygomatic gland mucocele and concomitant maxillary malforma- tion in a dog. A 7-month-old, male, mixed breed dog had a recent-onset of unilateral exoph- thalmos with third eyelid protrusion and a gradually enlarged swelling in the right temporal region. Methods: Physical and ophthalmic examinations, imaging, surgery and histology of the lesion were performed. Results: A compressing, painful right retrobulbar mass was clinically suspected and confirmed by ultrasound. Computed tomography revealed a large multiloculated cystic-like lesion of the right zygomatic gland projecting into the orbital space, displacing the eyeball. The ipsilateral molar part of the maxillary bone were underde- veloped with multiple abnormal unerupted mandibular crowded molar teeth in the premolar region. Modified lateral orbitotomy and selective caudal maxillary bone access were per- formed to provide ventral exposure of the orbit and dental extraction, while minimizing trauma to the globe and supporting structures. The pseudocyst was removed and the wall sampled for histology. Sections were characterized by acini of zygomatic gland embedded in a thick granulation tissue delineated in a border by abundant fibrin and amorphous hyaline homogeneous material (salivary secretion), partially infiltrated by macrophages consistent with sialocele. Clinical and imaging examinations six months after surgery showed no recur- rence of the mucocele or ocular implications. Conclusions: We described a complex case of exophthalmos due to zygomatic mucocele in a puppy with ipsilateral maxillary hypoplasia. A possible relationship between these two conditions could be hypothesized on the basis of advanced imaging features. Early diagnosis and management prevented later ocular complications
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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