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@ARTICLE{Rohmann:281789,
author = {Rohmann, Jessica L and Piccininni, Marco and Ebinger,
Martin and Wendt, Matthias and Weber, Joachim E and
Schwabauer, Eugen and Freitag, Erik and Zuber, Martina and
Bernhardt, Lydia and Lange, Julia and Erdur, Hebun and
Behrens, Janina and Ganeshan, Ramanan and Schlemm, Ludwig
and Harmel, Peter and Liman, Thomas G. and Lorenz-Meyer,
Irina and Rohrpasser-Napierkowski, Ira and Hille, Annegret
and Bohner, Georg and Nabavi, Darius G and Schmehl, Ingo and
Ekkernkamp, Axel and Jungehulsing, Gerhard J and Mackert,
Bruno-Marcel and Hartmann, Andreas and Endres, Matthias and
Audebert, Heinrich J},
title = {{E}ffect of {M}obile {S}troke {U}nit {D}ispatch on
{P}rocess {P}arameters and {F}unctional {O}utcomes in
{P}atients {W}ith {A}cute {S}troke: {T}he ${B}_{PROUD}-2.0$
{S}tudy.},
journal = {Neurology},
volume = {105},
number = {9},
issn = {0028-3878},
address = {Philadelphia, Pa.},
publisher = {Wolters Kluwer},
reportid = {DZNE-2025-01182},
pages = {e214225},
year = {2025},
abstract = {Prehospital stroke management on mobile stroke units (MSUs)
shortens time to IV thrombolysis (IVT) and improves
functional outcomes. Because IVT effects are time-dependent,
optimizing workflows and dispatch-related processes may
enhance MSU benefits. The $B_PROUD-2.0$ study aimed to
determine the effect of additional MSU dispatch on
functional outcomes in acute stroke patients under optimized
MSU organization and service delivery.In the nonrandomized,
controlled $B_PROUD-2.0$ study (May 2019-April 2021)
conducted in Berlin, Germany, MSUs were simultaneously
dispatched with conventional care ambulances for suspected
stroke emergency calls, whenever available. We compared
outcomes and process parameters between dispatch groups
(additional MSU dispatch vs conventional care only) among
patients with cerebral ischemia with disabling neurologic
symptoms and no contraindications to reperfusion treatments.
We used data from the Berlin dispatch center and records
from the $B_SPATIAL$ registry, consisting of 15 Berlin
hospitals with stroke units. We performed pooled analyses
with the $B_PROUD-1.0$ primary population (February
2017-April 2021) and with an extended cohort that also
included patients with reperfusion treatment
contraindications. The primary and co-primary outcomes were
3-month modified Rankin Scale scores (0: no deficits to 6:
death) and 3-tiered disability scale scores. Effect
estimates for these outcomes were obtained from ordinal
logistic regressions, adjusting for a priori selected
covariates after multiple imputation for missing
values.Coronavirus disease 2019 pandemic and limited funding
hindered full implementation of procedural improvements. A
total of 1,050 patients (mean age: 74 years, $46.7\%$
female) were included in $B_PROUD-2.0$ (vs 1,500 planned).
We found no statistically significant effect of MSU dispatch
on primary (common odds ratio [cOR] 0.90, $95\%$ CI
0.72-1.14) or co-primary (cOR 0.86, $95\%$ CI 0.63-1.17)
outcomes in $B_PROUD-2.0,$ and higher odds of IVT ≤1 hour
of dispatch in the MSU group (OR 10.15, $95\%$ CI
7.10-14.51). In pooled $B_PROUD-1.0+2.0$ primary population
analyses (N = 2,666, mean age: 73 years, $46.8\%$ female),
we found a beneficial effect on primary (cOR 0.80, $95\%$ CI
0.67-0.96) and co-primary (cOR 0.79, $95\%$ CI 0.64-0.97)
outcomes. The average effect on all stroke/TIA patients in
the extended cohort (N = 4,336, mean age 75 years, $47.6\%$
female) was also favorable (primary cOR 0.85, $95\%$ CI
0.75-0.95; co-primary cOR 0.86, $95\%$ CI 0.75-0.99).While
we did not observe statistically significant differences in
functional outcomes in the underpowered $B_PROUD-2.0$ study,
we found beneficial effects considering both $B_PROUD$ study
periods, also when including all stroke/TIA
patients.ClinicalTrials.gov: NCT03931616. Registered: April
26, 2019. First patient enrolled: May 9, 2019.The
$B_PROUD-2.0$ study provides Class III evidence that the
addition of MSUs to conventional care ambulances did not
improve functional outcomes at 3 months compared with
conventional care ambulances alone in patients with acute
ischemic stroke.},
keywords = {Humans / Female / Male / Aged / Mobile Health Units /
Stroke: therapy / Thrombolytic Therapy / Middle Aged / Aged,
80 and over / Emergency Medical Services: methods /
Ambulances / Time-to-Treatment / Registries / Treatment
Outcome / Emergency Medical Dispatch / Berlin / COVID-19},
cin = {AG Endres},
ddc = {610},
cid = {I:(DE-2719)1811005},
pnm = {353 - Clinical and Health Care Research (POF4-353)},
pid = {G:(DE-HGF)POF4-353},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:41100781},
doi = {10.1212/WNL.0000000000214225},
url = {https://pub.dzne.de/record/281789},
}