647 research outputs found
Gold therapy in pulmonary tuberculosis
(1) A survey of l00 cases and critical exposition
of the literature has been undertaken.
(2) Improvement was noted in 63.3% of cases of which
30% were slightly improved and 14.4% much improved.
( 3) Indications, contraindications', prophylaxis and
the ultimate difficulties of the treatment have
been discussed:
(a) Crisalbine may be given to cases pyrexial
or apyrexial, not improving or stationary
with sputum still positive for Koch's bacillus
and undergoing routine Sanatorium
treatment.
(b) it is useful in conjunction with collapse
therapy, where an artificial pneumothorax
is contemplated or has been induced to control
disease in the contralateral lung.
(c) it may be used in both the exudative and
productive type of case.
(d) it may be used where other treatment has
proved unavailing; and where the time or
economic factor is important.
(4) It is not a "cure" but is of value as an adjuvant
in the treatment of Pulmonary Tuberculosis;
its limitations and dangers must be
recognised.
(a) It produces evidences of Toxicity in 57.8%
of cases.
(b) It is contraindicated in associated cardiac,
renal or hepatic disease.
(c) Good results are not generally obtained in
advanced cases of pulmonary tuberculosis.
(d) It will not replace other tried methods of
treatment and is generally not required
where other methods are satisfactory, but
may be used in conjunction with these.
(5) It is of limited value; a few selected cases show
good results; a fair percentage are slightly improved
and life prolonged, and no case of death
was directly attributable to Crisalbine. It will
not save life.
There is little, if any, value in the drug
in uncollapsed cavities.
Each case must be judged on its own merits:
the dose should be small (0.05 gm.) ; gradually
increased; reactions should be carefully studied.
(6) There is no proved experimental basis for its use
in Pulmonary Tuberculosis.
Its precise action in the human body is
unknown: it is more a Stimulation Therapy than a
true Chemotherapy.
(7) Its value from a public health standpoint has
been discussed: the bacillary loss of sputum is
not generally permanent. It must still have a
limited sphere and cannot be generally employed
by all.
(8) Results are based on clinical values; immediate
and remote results are difficult to judge and
often prove rather disappointing.
(9) It is possible that remote reactions caused by
gold may have a wider effect than is at present
generally realised: there is also evidence that
examination of the blood cells may afford a
standard for the assessment of its value in this
disease.
(10) It is still a highly controversial subject; there
is hope that a substance related to this gold
compound, having a minimal effect on the human
body, may yet be forthcoming.
It should not be withdrawn from clinical
use, and should be employed with due regard to
the resistance and reactions of the patient in
certain selected cases. It should have a place
in the armamentaria of the Physician in his fight
against Tuberculosis
Noncommutative Geometry and Gravity
We study a deformation of infinitesimal diffeomorphisms of a smooth manifold.
The deformation is based on a general twist. This leads to a differential
geometry on a noncommutative algebra of functions whose product is a
star-product. The class of noncommutative spaces studied is very rich.
Non-anticommutative superspaces are also briefly considered.
The differential geometry developed is covariant under deformed
diffeomorphisms and it is coordinate independent. The main target of this work
is the construction of Einstein's equations for gravity on noncommutative
manifolds.Comment: 40pages; v2: references adde
Twisted Gauge Theories
Gauge theories on a space-time that is deformed by the Moyal-Weyl product are constructed by twisting the coproduct for gauge transformations. This way a deformed Leibniz rule is obtained, which is used to construct gauge invariant quantities. The connection will be enveloping algebra valued in a particular representation of the Lie algebra. This gives rise to additional fields, which couple only weakly via the deformation parameter and reduce in the commutative limit to free fields. Consistent field equations that lead to conservation laws are derived and some properties of such theories are discussed
A Gravity Theory on Noncommutative Spaces
A deformation of the algebra of diffeomorphisms is constructed for
canonically deformed spaces with constant deformation parameter theta. The
algebraic relations remain the same, whereas the comultiplication rule (Leibniz
rule) is different from the undeformed one. Based on this deformed algebra a
covariant tensor calculus is constructed and all the concepts like metric,
covariant derivatives, curvature and torsion can be defined on the deformed
space as well. The construction of these geometric quantities is presented in
detail. This leads to an action invariant under the deformed diffeomorphism
algebra and can be interpreted as a theta-deformed Einstein-Hilbert action. The
metric or the vierbein field will be the dynamical variable as they are in the
undeformed theory. The action and all relevant quantities are expanded up to
second order in theta.Comment: 28 pages, v2: coefficient in equ. (10.15) corrected, references
added, v3: references added, published versio
Neighborhood Urban Environmental Quality Conditions Are Likely to Drive Malaria and Diarrhea Mortality in Accra, Ghana
Background. Urbanization is a process which alters the structure and function of urban environments. The alteration in the quality of urban environmental conditions has significant implications for health. This applies both to the ecology of insect vectors that may transmit diseases and the burden of disease. Study Objectives. To investigate the relationship between malaria and infectious diarrhea mortality and spatially varied neighborhood environmental quality conditions in a low-income economy. Design. A one time point spatial analysis of cluster-level environmental conditions and mortality data using principal component analysis (PCA), one-way analysis of variance (ANOVA) and generalized linear models (GLMs). Methods. Environmental variables were extracted from the Ghana Census 2000 database while mortality data were obtained from the Ghana Births and Deaths Registry in Accra over the period 1998–2002. Results. Whereas there was a strong evidence of a difference in relative mortality of malaria across urban environmental zones of differing neighborhood environmental conditions, no such evidence of mortality differentials was observed for diarrhea. In addition, whereas bivariate analyses showed a weak to strong evidence of association between the environmental variables and malaria mortality, no evidence of association was found between diarrhea mortality and environmental variables. Conclusion. We conclude that environmental management initiatives intended for infectious disease control might substantially reduce the risk of urban malaria mortality and to a less extent that for urban diarrhea mortality in rapidly urbanizing areas in a low-income setting
Reporting of flow diagrams in randomised controlled trials published in periodontology and implantology: a survey.
BACKGROUND
Item 13 of the CONSORT guidelines recommends documentation of the participant flow in randomised clinical trials (RCTs) using a diagram. In the medical literature, the reporting of the flow of participants in RCTs has been assessed to be inadequate. The quality of reporting flow diagrams in periodontology and implantology remains unknown. The aim of this study was to assess the reporting of flow diagrams in RCTs published in periodontology and implantology journals.
MATERIALS AND METHODS
RCTs published between 15th January 2018 and 15th January 2022 in twelve high-ranked periodontology and implantology journals were identified. Trial characteristics at the RCT level were extracted. The flow diagram included in each RCT was assessed for completeness of reporting in relation to published criteria and the CONSORT flow diagram template.
RESULTS
From the 544 eligible articles, 85% were single-centre, 82% of parallel-group design and 79% investigated surgical interventions. Three-hundred and fifteen (58%) articles were published in CONSORT endorsing journals. A flow diagram was reported in 317 (58%) trials and reporting was more common in periodontology (73.1%). Overall, 56% of publications with a flow diagram reported a complete CONSORT flow diagram, while in 44% of flow diagrams, at least one point from the CONSORT reporting template was missing. Reasons for loss to follow-up (69.7%) and exclusions from the RCT analysis (86.4%) were poorly reported.
CONCLUSION
The reporting of flow diagrams in periodontology and implantology RCTs was sub-optimal. Greater awareness of the importance of fully completing the participant CONSORT flow diagram is required
Standardized Treatment and Diagnostic Approach to Reduce Disease burden in the early postoperative phase in children with congenital heart defects-STANDARD study: a pilot randomized controlled trial
To explore the effect of a daily goal checklist on pediatric cardiac intensive care unit (PCICU) length of stay (LOS) after
congenital heart surgery. This study is a prospective randomized single-center study. Group characteristics were as follows: STANDARD group: n=30, 36.7% female, median age 0.9 years; control group: n=33, 36.4% female, median age
1.1 years. Invasive ventilation time, STAT categories, mean vasoactive-inotropic score (VIS)24h, maximal (max.) VIS24h,
mean VIS24–48h, max. VIS24–48h, VIS category, number of sedatives, analgesics, diuretics, number of deployed diagnostic
modalities, morbidities, and mortality did not differ between both groups. Median PCICU LOS was 96.0 h (STANDARD
group) versus 101.5 h (control group) (p=0.63). In the overall cohort, univariate regression analysis identified age at
surgery (b=−0.02), STAT category (b=18.3), severity of CHD (b=40.6), mean VIS24h (b=3.5), max. VIS24h (b=2.2),
mean VIS24–48h (b=6.5), and VIS category (b=13.8) as significant parameters for prolonged PCICU LOS. In multivariate
regression analysis, age at surgery (b=−0.2), severity of CHD (b=44.0), and mean VIS24h (b=6.7) were of significance.
Within the STANDARD sub-group, univariate regression analysis determined STAT category (b=32.3), severity of CHD
(b=70.0), mean VIS24h (b=5.0), mean VIS24–48h (b=5.9), number of defined goals (b=2.6), number of achieved goals
(b=3.3), number of not achieved goals (b=10.8), and number of unevaluated goals (b=7.0) as significant parameters for
prolonged PCICU LOS. Multivariate regression analysis identified the number of defined goals (b=2.5) and the number of
unevaluated goals (b=−3.0) to be significant parameters.
Conclusion: The structured realization and recording of daily goals is of advantage in patients following pediatric cardiac
surgery by reducing PCICU LOS
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