Classification system for embryonic development of Simulium arcticum Malloch (IIS-10.11) (Diptera: Simuliidae)

1988 ◽  
Vol 66 (1) ◽  
pp. 274-276
Author(s):  
J. L. Shipp
Keyword(s):  
Environmental Factors ◽  
Embryonic Development ◽  
Classification System ◽  
Egg Development ◽  
Simple Classification

A classification system for embryonic development of Simulium arcticum Malloch (IIS-10.11) is described. Embryonic development was divided into five stages based upon the degree of embryogenesis. This simple classification system would be useful for monitoring development of S. arcticum (IIS-10.11) in studies to determine the effects of environmental factors or chemical insecticides on egg development and hatch.

Abstract WP260: The Left Atrial Appendage Morphology Improves Prediction of Appendage Stagnant Flow and Stroke Risk in Patients With Atrial Fibrillation Using a Simple Classification System

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Shadi Yaghi ◽  
Andrew Chang ◽  
Gian Ignacio ◽  
Erica Scher ◽  
Nikhil Panda ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Flow Velocity ◽  
Primary Endpoint ◽  
Classification System ◽  
Left Atrial ◽  
Left Atrial Appendage ◽  
Current System ◽  
Classification Systems ◽  
Atrial Appendage ◽  
Simple Classification

Background and Purpose: Previously we proposed a simple classification system of the left atrial appendage (LAA) morphology, with low risk (LAA-L) defined as one lobe with an acute angle bend arising from the proximal or middle portion and high risk (LAA-H) defined as all other morphologies. We aim to determine the association between LAA morphology (using both classification systems), LAA flow velocity, and stroke rates. Methods: We analyzed consecutive patients with atrial fibrillation (AF) selected for ablation who underwent cardiac CT angiography and transesophageal echocardiogram. The primary correlates were LAA-H and non-chicken wing (NCW) LAA morphology. The primary outcome was the composite endpoint of history of ischemic stroke/TIA or non-lacunar infarct on neuroimaging. Adjusting for CHADS2Vasc score, multivariable models were used to determine associations between LAA morphology and composite outcomes. Results: We identified 379 patients; the primary endpoint occurred in 32/379 patients (8.4%). LAA-H (adjusted OR 3.63, 95% CI 1.44-9.14) and NCW LAA morphology (adjusted OR 2.52, 95% CI 1.15-5.53) were associated with the primary endpoint. LAA flow velocity ≤20 cm/s was more common in LAA-H vs. LAA-L (9.6% vs. 2.8%, p = 0.019), but not in NCW vs. CW LAA morphology (9.7% vs. 3.7%, p = 0.054). Conclusion: The LAA H/L morphological classification system may be superior to the current system in risk stratifying patients with AF and correlates better with impaired LAA flow dynamics.

Validation of a Simple Classification System for Endoscopic Diagnosis of Small Colorectal Polyps Using Narrow-Band Imaging

2012 ◽  
Vol 143 (3) ◽  
pp. 599-607.e1 ◽  
Author(s):  
David G. Hewett ◽  
Tonya Kaltenbach ◽  
Yasushi Sano ◽  
Shinji Tanaka ◽  
Brian P. Saunders ◽  
...  
Keyword(s):  
Classification System ◽  
Narrow Band ◽  
Narrow Band Imaging ◽  
Colorectal Polyps ◽  
Endoscopic Diagnosis ◽  
Simple Classification

CLASSIFICATION OF HAND SPLINTING

Hand Surgery ◽  
2002 ◽  
Vol 07 (02) ◽  
pp. 209-213 ◽  
Author(s):  
Simon K. M. Wong
Keyword(s):  
Environmental Factors ◽  
Classification System ◽  
Single System ◽  
Logical Deduction ◽  
Advantages And Disadvantages ◽  
American Society ◽  
Set Up ◽  
New System ◽  
Rote Memory

The terminology in describing splint or orthosis has been reviewed but there is no one single system adopted universally. Joint efforts by doctors, therapists and orthotists had been set up to review the classification of splint. Four ways of classifying hand splints have been introduced: namely, eponym, acronym, descriptive classification system and the classification system proposed by the American Society of Hand Therapists. These systems include the use of rote memory or logical deduction in grouping of splints. This paper describes the advantages and disadvantages of each classification system. Neither one of the systems stands out to be the best. A combination of the advantages of different systems, such as precision and logical deduction, may be an option for developing a new system. Moreover, communication, documentation and other environmental factors should also be considered.

Is the rate of Embryonic development a predictor of overall development rate in Tanytarsus barbitarsis Freeman (Diptera: Chironomidae)?

1990 ◽  
Vol 41 (5) ◽  
pp. 575 ◽  
Author(s):  
MJ Kokkinn
Keyword(s):  
Environmental Factors ◽  
Embryonic Development ◽  
Significant Relationship ◽  
Generation Time ◽  
South Australia ◽  
Additional Term ◽  
Development Rate ◽  
Time Data ◽  
Egg Hatching ◽  
Mathematical Relationships

Mathematical relationships describing the effect of water temperature on embryonic development and generation time for Tanytarsus barbitarsis, a nuisance chironomid from salt lakes near Port Augusta, South Australia, were compared. The aim of the comparison was to determine whether the relation- ship describing egg hatching could be extrapolated to determine the overall development rate of the species. Results indicated that the power function that closely described embryonic development, D(t) = 8712.32t-2.70, could not be fitted to the generation-time data. However, when an additional term, water salinity, was included, a highly significant relationship was derived: D(s,t)*=S4.0308t-4.471. This suggested that laboratory egg-hatching experiments could not account for the attenuating effect of environmental factors on overall development rates in the field.

Effects of tepa and other aziridine alkylating agents on egg development in the red bollworm Diparopsis castanea Hmps, and the silver Y moth Autographa gamma (L.) (Lep., Noctuidae)

1973 ◽  
Vol 62 (3) ◽  
pp. 401-405
Author(s):  
D. G. Campion
Keyword(s):  
Embryonic Development ◽  
Histological Examination ◽  
Early Stage ◽  
Alkylating Agents ◽  
Progressive Increase ◽  
Egg Development ◽  
Egg Hatch ◽  
Time Of Application ◽  
Autographa Gamma ◽  
Silver Y Moth

Increased doses of tepa applied by injection to female Diparopsis castanea Hmps. caused a progressive increase in sterility accompanied by a decrease in the number of eggs oviposited from the time of application. After an interval of three days it was shown by histological examination that injected doses of 10 μg of tepa induced degeneration of the developing oocytes and a shrinkage or resorption of some of the mature eggs. After Diparopsis male moths were treated with graduated injected doses of apholate, metepa and tepa and then mated with untreated females, considerable embryonic development without subsequent egg hatch occurred at the lower dosage levels. When tepa-treated Autographa gamma (L.) males at a dose of 10 μg were similarly mated with untreated females histological examination showed that the development of many of the eggs had been arrested at a very early stage; in some instances a greater development, although of an abnormal kind, had taken place.

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