Karsten Lunze

Dr. Karsten Lunze

orcid

Research Focus & Metrics

Academic Career Length

27Years (2000-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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31 January 2013 in BMC Medicine
Verified
Journal Article
Open access
PDF file
KLKarsten Lunze
Karsten Lunze
DBDavid E Bloom
David E Bloom
DJDean T Jamison
Dean T Jamison
DHDavidson H Hamer
Davidson H Hamer
To provide evidence on the global epidemiological situation of neonatal hypothermia and to provide recommendations for future policy and research directions.

1 March 2012 in Journal of Perinatology
Verified
Journal Article
Closed access
PDF file
KLKarsten Lunze
Karsten Lunze
DHDavidson H Hamer
Davidson H Hamer

17 December 2015 in BMC Pregnancy and Childbirth
Verified
Journal Article
Open access
PDF file
KLKarsten Lunze
Karsten Lunze
AHAriel Higgins-Steele
Ariel Higgins-Steele
ASAline Simen-Kapeu
Aline Simen-Kapeu
LVLinda Vesel
Linda Vesel
JKJulia Kim
Julia Kim
KDKim Dickson
Kim Dickson
Essential interventions can improve maternal and newborn health (MNH) outcomes in low- and middle-income countries, but their implementation has been challenging. Innovative MNH approaches have the potential to accelerate progress and to lead to better health outcomes for women and newborns, but their added value to health systems remains incompletely understood. This study’s aim was to analyze the landscape of innovative MNH approaches and related published evidence. Systematic literature review and descriptive analysis based on the MNH continuum of care framework and the World Health Organization health system building blocks, analyzing the range and nature of currently published MNH approaches that are considered innovative. We used 11 databases (MedLine, Web of Science, CINAHL, Cochrane, Popline, BLDS, ELDIS, 3ie, CAB direct, WHO Global Health Library and WHOLIS) as data source and extracted data according to our study protocol. Most innovative approaches in MNH are iterations of existing interventions, modified for contexts in which they had not been applied previously. Many aim at the direct organization and delivery of maternal and newborn health services or are primarily health workforce interventions. Innovative approaches also include health technologies, interventions based on community ownership and participation, and novel models of financing and policy making. Rigorous randomized trials to assess innovative MNH approaches are rare; most evaluations are smaller pilot studies. Few studies assessed intervention effects on health outcomes or focused on equity in health care delivery. Future implementation and evaluation efforts need to assess innovations’ effects on health outcomes and provide evidence on potential for scale-up, considering cost, feasibility, appropriateness, and acceptability. Measuring equity is an important aspect to identify and target population groups at risk of service inequity. Innovative MNH interventions will need innovative implementation, evaluation and scale-up strategies for their sustainable integration into health systems.

1 September 2010 in Circulation: Cardiovascular Imaging
Verified
Journal Article
Closed access
PDF file
BSBoris Schmitt
Boris Schmitt
PSPaul Steendijk
Paul Steendijk
SOStanislav Ovroutski
Stanislav Ovroutski
KLKarsten Lunze
Karsten Lunze
PRPedram Rahmanzadeh
Pedram Rahmanzadeh
TKTitus Kuehne
Titus Kuehne
Background—: The role, interplay, and relative importance of the multifactorial hemodynamic and myocardial mechanisms causing dysfunction of the Fontan circulation remain incompletely understood. Methods and Results—: Using an MRI catheterization technique, we performed a differential analysis of pulmonary vascular resistance and aortopulmonary collateral blood flow in conjunction with global ventricular pump function, myocontractility (end-systolic pressure-volume relation), and diastolic compliance (end-diastolic pressure-volume relation) in 10 patients with a Fontan circulation at rest and during dobutamine stress. Pulmonary and ventricular pressures were measured invasively and synchronized with velocity-encoded MRI-derived pulmonary and aortic blood flows and cine MRI-derived ventricular volumes. Pulmonary vascular resistance and end-systolic and end-diastolic pressure-volume relations were then determined. Aortopulmonary collateral flow was calculated as the difference between aortic and pulmonary flow. Compared to rest, dobutamine caused a small increase in mean pulmonary pressures ( P <0.05). Collateral flow was significantly augmented ( P <0.001) and contributed importantly to an increase in pulmonary flow ( P <0.01). Pulmonary vascular resistance decreased significantly ( P <0.01). Dobutamine did not increase stroke volumes significantly despite slightly enhanced contractility (end-systolic pressure-volume relation). Active early relaxation (τ) was inconspicuous, but the end-diastolic pressure-volume relation shifted upward, indicating reduced compliance. Conclusions—: In patients with a Fontan circulation, aortopulmonary collateral flow contributes substantially to enhanced pulmonary flow during stress. Our data indicate that pulmonary vascular response to augmented cardiac output was adequate, but decreased diastolic compliance was identified as an important component of ventricular dysfunction.

1 September 2018 in International Journal of Drug Policy
Verified
Journal Article
Open access
KLKarsten Lunze
Karsten Lunze
OLOlivier Lermet
Olivier Lermet
VAVladanka Andreeva
Vladanka Andreeva
FHFabienne Hariga
Fabienne Hariga
Several Southeast Asian countries have implemented compulsory drug detention centres in which people who use or are suspected of using drugs, mainly amphetamine-type stimulants, are confined without their consent and in most cases without due process and clinical evaluation of their substance use disorder. Given these facilities' lack of access to evidence-based drug dependence treatment, and the human rights implications of peoples' arbitrary detention under the pretext of "treatment", international organizations have called for their closure. The aim of this study was to estimate recent numbers of compulsory drug treatment centres and of people in these centres in the region. We conducted an analysis of cross-sectional governmental data collected from seven countries in the region with compulsory drug detention centres, namely Cambodia, China, Lao PDR, Malaysia, the Philippines, Thailand and Viet Nam. We computed descriptive data provided by government representatives for the period between 2012 and 2014. The total number of people in compulsory detention centres overall decreased by only 4% between 2012 and 2014. In 2014, over 450,000 people were detained in 948 facilities in the seven countries. While only two countries decreased the number of compulsory detention centres, most countries increased the number of people detained. In spite of international calls for the closure of compulsory detention centres, the number of facilities and detained people remained high in the seven countries included in the analysis. These officially reported figures are concerning regarding access to effective drug dependence treatment and given the potential for additional human rights abuses within compulsory detention centers. Further concerted policy and advocacy efforts should support transition of treatment for people with drug dependence towards human rights-based and evidence-based drug dependence treatment. Expansion of existing drug and HIV services in the community rather than compulsory treatment modalities will effectively address the region's drug and HIV burden.

1 November 2009 in JACC: Cardiovascular Imaging
Verified
Journal Article
Closed access
BSBoris Schmitt
Boris Schmitt
PSPaul Steendijk
Paul Steendijk
KLKarsten Lunze
Karsten Lunze
SOStanislav Ovroutski
Stanislav Ovroutski
JFJan Falkenberg
Jan Falkenberg
TKTitus Kuehne
Titus Kuehne