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2016 ; 47
(9
): 2373-9
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
Effects of Alteplase for Acute Stroke on the Distribution of Functional Outcomes:
A Pooled Analysis of 9 Trials
#MMPMID27507856
Lees KR
; Emberson J
; Blackwell L
; Bluhmki E
; Davis SM
; Donnan GA
; Grotta JC
; Kaste M
; von Kummer R
; Lansberg MG
; Lindley RI
; Lyden P
; Murray GD
; Sandercock PA
; Toni D
; Toyoda K
; Wardlaw JM
; Whiteley WN
; Baigent C
; Hacke W
; Howard G
Stroke
2016[Sep]; 47
(9
): 2373-9
PMID27507856
show ga
BACKGROUND: Thrombolytic therapy with intravenous alteplase within 4.5 hours of
ischemic stroke onset increases the overall likelihood of an excellent outcome
(no, or nondisabling, symptoms). Any improvement in functional outcome
distribution has value, and herein we provide an assessment of the effect of
alteplase on the distribution of the functional level by treatment delay, age,
and stroke severity. METHODS: Prespecified pooled analysis of 6756 patients from
9 randomized trials comparing alteplase versus placebo/open control. Ordinal
logistic regression models assessed treatment differences after adjustment for
treatment delay, age, stroke severity, and relevant interaction term(s). RESULTS:
Treatment with alteplase was beneficial for a delay in treatment extending to 4.5
hours after stroke onset, with a greater benefit with earlier treatment. Neither
age nor stroke severity significantly influenced the slope of the relationship
between benefit and time to treatment initiation. For the observed case mix of
patients treated within 4.5 hours of stroke onset (mean 3 hours and 20 minutes),
the net absolute benefit from alteplase (ie, the difference between those who
would do better if given alteplase and those who would do worse) was 55 patients
per 1000 treated (95% confidence interval, 13-91; P=0.004). CONCLUSIONS:
Treatment with intravenous alteplase initiated within 4.5 hours of stroke onset
increases the chance of achieving an improved level of function for all patients
across the age spectrum, including the over 80s and across all severities of
stroke studied (top versus bottom fifth means: 22 versus 4); the earlier that
treatment is initiated, the greater the benefit.
|Aged
[MESH]
|Aged, 80 and over
[MESH]
|Brain Ischemia/diagnosis/*drug therapy
[MESH]
|Female
[MESH]
|Fibrinolytic Agents/*therapeutic use
[MESH]
|Humans
[MESH]
|Male
[MESH]
|Middle Aged
[MESH]
|Severity of Illness Index
[MESH]
|Stroke/diagnosis/*drug therapy
[MESH]
|Thrombolytic Therapy
[MESH]
|Time Factors
[MESH]
|Tissue Plasminogen Activator/*therapeutic use
[MESH]