Elena Stawschenko, Tim Schaller, Benjamin Kern, Berit Bode, Frank Dörries, Kristina Kusche-Vihrog, Hartmut Gehring, and Philipp Wegerich,
Current Status of Measurement Accuracy for Total Hemoglobin Concentration in the Clinical Context, Biosensors , vol. 1, no. 12, pp. 1147, 2022.

DOI:	10.3390/bios12121147
Datei/Url:	biosensors-12-01147.pdf

Sebastian Brandt, Oliver Kimberger, Benjamin Weber, Anne Klose, Swetlana Stockmann, Wilfried Schmeller, Hartmut Gehring, and Patrick and Kellner,
Methaemoglobinemia after Liposuction under Tumescent Local Anaesthesia – Diagnostic Value of Pulse Oximetry, WORLD JOURNAL OF PLASTIC SURGERY , vol. 11, no. 1, 2022.

DOI:	10.52547/wjps.11.1.111
Datei/Url:	article-1-866-en.html

Horst Hellbrück, Gunther Ardelt, Philipp Wegerich, and Hartmut Gehring,
Brachialis Pulse Wave Measurements with Ultra-Wide Band and Continuous Wave Radar, Photoplethysmography and Ultrasonic Doppler Sensors, Sensors , vol. 21, no. 1, 2021.

DOI:	10.3390/s21010165
Datei/Url:	165

Moritz Meusel, Philipp Wegerich, Berit Bode, Elena Stawschenko, Kristina Kusche-Vihrog, Horst Hellbrück, and Hartmut Gehring,
Measurement of Blood Pressure by Ultrasound—The Applicability of Devices, Algorithms and a View in Local Hemodynamics, Diagnostics , vol. 11, no. 12, 2021.

DOI:	10.3390/diagnostics11122255
Datei/Url:	2255

Frank Dietzel, Peter Dieterich, Frank Dörries, Hartmut Gehring, and Philipp Wegerich,
Invasive and non-invasive point-of-care testing and point-of-care monitoring of the hemoglobin concentration in human blood – how accurate are the data?, Biomedical Engineering / Biomedizinische Technik , 2019.

DOI:	10.1515/bmt-2018-0066
Datei/Url:	bmt-2018-0066.xml

H. Gehring, K. Rackebrandt, and M. Imhoff,
E-Health und die Realität – Was sehen wir heute schon in der Klinik?, Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz , 2018.

DOI:	10.1007/s00103-018-2690-6
Datei/Url:	s00103-018-2690-6

F. Dietzel,
MA - Feasibility study for a noninvasive method to determine the concentration of hemoglobin in human blood, Universität zu Lübeck, 2018.

Hartmut Gehring, and Klaas Rackebrandt,
Vermeidung von Feuer/Brand/Explosion im OP, Anästhesiologie Intensivmedizin Notfallmedizin Schmerztherapie , vol. Volume 52, Issue 4, pp. 303-309, 2017.

Martin Mackenberg, Klaas Rackebrandt, Christian Bollmeyer, Philipp Wegerich, Hartmut Gehring, and Horst Hellbrück,
Reflection and transmission of ultra-wideband pulses for detection of vascular pressure variation and spatial resolution within soft tissues, Biomedical Physics & Engineering Express , vol. Volume 2, Issue 6, no. 6, pp. 065003, Nov. 2016.

Datei/Url:

065003

M. Lewke,
Masterpraktikum - Adaptierung eines prototypischen Systems zur bidirektionalen kommunikation in einer MRT-Umgebung an klinische Fragestellungen, 2016.

K. Rackebrandt, and H. Gehring,
Detection of the venous oxygen saturation in an oxygenation and perfusion model, Biomedical Physics & Engineering Express , vol. Volume 2, Issue 1, pp. 015013, 2016.

D. Ayhan,
BA - Entwicklung eines Zuverlässigkeitskonzeptes für ein Wärmetherapiegerät mit Hilfe der statistischen Versuchsplanung, Universität zu Lübeck, 2016.

K. Rackebrandt, and H. Gehring,
Calibration and evaluation of a continuous wave multi-distance NIRS system in simulated desaturation investigations, Biomedical Physics & Engineering Express , vol. Volume 2, Issue 3, pp. 035017, 2016.

D. Ziaian, P. Rostalski, A.E. Berggreen, S. Brandt, M. Grossherr, H. Gehring, A. Hengstenberg, and S. Zimmermann,
Improving systems dynamics by means of advanced signal processing – mathematical, laboratorial and clinical evaluation of propofol monitoring in breathing gas, Sensors and Transducers , vol. Volume 193, Number 10, pp. 145-153, 2015.

I. Sponholz,
BA - Statistische Methodenoptimierung im Rahmen der Materialqualifizierung vor dem Hintergrund geringer Stückzahlen, Universität zu Lübeck, 2015.

S. Lutherdt, E. Kaiser, T. Kirchhofer, P. Wegerich, and H. Witte,
Investigation of Sensitivity of Foot Soles to Vibrational Stimuli: First Results for Developers of Information Interfaces, in Human Aspects of IT for the Aged Population , Springer International Publishing, 2015. pp. 290-299.

K. Rackebrandt, and H. Gehring,
Measuring different oxygenation levels in a blood perfusion model simulating the human head using NIRS, Current Directions in Biomedical Engineering , vol. Volume 1, Issue 1, pp. pp. 371–375, 2015.

H. Gehring, S. Kotzsch, and W. Korb,
Positionspapier - Nationaler kompetenzbasierter Lernzielkatalog der Biomedizintechnik für die Studierenden der Medizin (BMT-NKLM), 2015.

K. Rackebrandt, and H. Gehring,
The oxygen content of the cerebral efferent vessels - First steps to a sensor design, Biomedical Engineering / Biomedizinische Technik , vol. Volume 59 Track L, Issue s1, pp. p. 832-835, 2014.

P. Olenik,
BA - Ausarbeitung der Integration eines Vorgehens zur Qualifizierung von Produktions-Prozessen in den Erstmuster-Prüfprozess, Universität zu Lübeck, 2014.

[de] H Gehring, O Pramann, M Imhoff, and U-V Albrecht,
Future trend medical apps. From the apps store directly into medical practice?, Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz , vol. 57, no. 12, pp. 1402--10, 2014.

DOI:	10.1007/s00103-014-2061-x

J. Jayethevan,
BA - Bidirektionale Kommunikation über ein internes WLAN-Netzwerk in einer MRT-Umgebung, Universität zu Lübeck, 2014.

S. Brandt, I. Mühlsteff, and M. Imhoff,
Akzidentelle Hypothermie -- Diagnose, Prävention und Therapie., .... DGBMT Frankfurt am Main, 2013.

S. Stockmann, E. Spies, H. Gehring, A. Klose, W. Schmeller, M. Seyfarth, and L. Dibbelt,
Evaluation and Application of a High Performance Liquid Chromatographic Method for Prilocaine Analysis in Human Plasma, Clin Lab , vol. 59, pp. 127-32, 2013.

C. Bollmeyer, T. Esemann, H. Gehring, and H. Hellbrück,
Precise Indoor Altitude Estimation based on differential barometric Sensing for wireless Medical Applications, Body Sensor Networks , pp. 1-6, 2013.

J. Koch, S. Brandt, and M. Imhoff,
Thermo-management for accidental hypothermia, Biomed Tech (Berl) , vol. DOI: 10.1515/bmt-2012-4414, 2012.

S. Brandt, J. Mühlsteff, and M. Imhoff,
Prophylaxis of accidental hypothermia, Biomed Tech , vol. 57, no. 5, pp. 307-322, 2012.

T. Regueira, S. Djafarzadeh, S. Brandt, J. Gorrasi, E. Borotto, F. Porta, J. Takala, H. Bracht, S. Shaw, P. Lepper, and S. Jakob,
Oxygen transport and mitochondrial function in porcine septic shock, cardiogenic shock, and hypoxaemia, Acta Anaesthesiol Scand , vol. 56, pp. 846-859, 2012.

O. Elsner, S. Stockmann, E. Spies, L. Dibbelt, and H. Gehring,
Gas Phase Analysis of Bupivacaine and Ropivacaine by Solid Phase Micro Extraction (SPME) and Gas Chromatography - Mass Spectrometry (GS-MS): A Feasibility Study, American Association of Anesthesiologists Annual Meeting , 2012.

H. Paarmann, T. Hanke, M. Heringlake, H. Heinze, S. Brandt, J. Karsten, and J. Schon,
Low preoperative cerebral oxygen saturation is associated with longer time to extubation during fast-track cardiac anaesthesia, Interact Cardiovasc Thorac Surg , vol. 15, pp. 400-405, 2012.

B. Weber, S. Marx, H. Gehring, and B. Nestler,
Direct modulation of pulse oximetry probe light signals using a digital micromirror array for instrumental calibration of optical sensors, Biomed Tech (Berl) , 2012.

K. Lopez-Navas, S. Brandt, M. Strutz, H. Gehring, and U. Wenkebach,
Comparison of two methods to assess transdiaphragmatic pressure at different levels of work of breathing, Biomed Tech (Berl) , 2012.

B. Venema, N. Blanik, V. Blazek, H. Gehring, A. Opp, and S. Leonhardt,
Advances in Reflective Oxygen Saturation Monitoring With a Novel In-Ear Sensor System: Results of a Human Hypoxia Study, IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING , vol. 59, no. 7, pp. 2003-2010, 2012.

L.B. Hiltebrandt, E. Koepfli, O. Kimberger, G.H. Sigurdsson, and S. Brandt,
Hypotension during Fluid-restricted Abdominal Surgery: Effects of Norepinephrine Treatment on Regional and Microcirculatory Blood Flow in the Intestinal Tract, Anesthesiology , vol. 114, pp. 557-564, 2011.

M. Grossherr, A. Hengstenberg, H. Papenberg, L. Dibbelt, G. Wollenberg, P. Schmucker, H. Gehring, and T. Meier,
Propofol in bronchoalveolar lavage during anaesthesia, Clin Chim Acta , vol. 412, pp. 190-3, 2011.

L. Dibbelt, A. Scheel, M. Grossherr, H. Gehring, and M. Seyfarth,
On the oxidative metabolism of propofol (2,6-diisopropylphenol) in pig and sheep, 3rd International Conference on Drug Discovery & Therapy , 2011.

B. Weber, B. Nestler, J.-F. Zhang, and H. Gehring,
Kalibration optischer Sensoren für die Patientenüberwachung, Posterbeitrag, 25. Treffpunkt Medizintechnik "Nicht invasive Diagnostik", TSB Medici, Berlin , 2011.

B. Weber, B. Nestler, J.-F. Zhang, and H. Gehring,
"Calibration of optical sensors for patient monitoring - A novel concept", Posterbeitrag, Biomedizinische Technik/Biomedical Engineering, , vol. 56, no. Issue s1, pp. 1-22, 2011.

J. Karsten, H. Luepschen, M. Grossherr, H.P. Bruch, S. Leonhardt, H. Gehring, and T. Meier,
Effect of PEEP on regional ventilation during laparoscopic surgery monitored by electrical impedance tomography, Acta Anaesthesiol Scand , vol. 55, no. 7, 2011.

P.G. Knacke, H. Gehring, and P. Saur,
Anaesthesia under unfavorable conditions - rescue helicopter, Anasthesiol Intensivmed Notfallmed Schmerzther , vol. 46, no. 3, 2011.

A.G. Mohammedani, K. Mankodiya, A. Opp, H. Gehring, M. Klinger, and U.G. Hofmann,
An Approach to a Multiple Channel Oximetry System, in 15th Nordic-Baltic Conference on Biomedical Engineering and Medical Physics (NBC 2011) , K. Dremstrup, S. Rees, O. Jensen, Eds. 15TH NORDIC-BALTIC CONFERENCE ON BIOMEDICAL ENGINEERING AND MEDICAL PHYSICS (NBC 2011), 2011. pp. 89-92.

U. Kessler, T. Grau, F. Gronchi, S. Berger, S. Brandt, H. Bracht, C. Marcucci, Z. Zachariou, and S. Jakob,
Comparison of porcine and human coagulation by thrombelastometry, Thromb Res , vol. 128, pp. 477-482, 2011.

B. Weber, B. Nestler, L. Dibbelt, and H. Gehring,
Optische Transmission von Propofol im Bereich zwischen 1000 nm bis 2000 nm, Posterbeitrag, Workshop "Kleine Volumenströme in der Medizintechnik", Lübeck , 2010.

M. Grossherr, B. Varadarajan, L. Dibbelt, P. Schmucker, H. Gehring, and A. Hengstenberg,
Time course of ethanol and propofol exhalation after bolus injection using ion molecule reaction-mass spectrometry, Anal Bioanal Chem , 2010.

S. Brandt, R. Oguz, H. Huttner, G. Waglechner, A. Chiari, R. Greif, A. Kurz, and O. Kimberger,
Resistive--Polymer Versus Forced--Air Warming: Comparable Efficacy in Orthopedic Patients, Anesth Analg , vol. 110, no. 3, pp. 834-8, 2010.

P. Soeding, M. Deppe, and H. Gehring,
Pulse-oximetric measurement of prilocaine-induced methemoglobinemia in regional anesthesia., Anesth Analg. , vol. 111, no. 4, pp. 1065-8, 2010.

B. Weber, and H. Gehring,
Optical transmission spectra for analysis of bloodcomponents and -gases", Application Note, LOT-Oriel, Darmstadt , 2010.

B. Weber, B. Nestler, L. Dibbelt, and H. Gehring,
Optical Transmission of Propofol in The Wavelength Range of 1000 nm to 2000 nm, Vortrag, Biomedizinische Technik/Biomedical Engineering , vol. 55, no. Issue s1, pp. 249, 2010.

F. Daudel, J. Gorrasi, H. Bracht, S. Brandt, V. Krejci, S.M. Jakob, J. Takala, and H.U. Rothen,
Effects of lung recruitment maneuvers on splanchnic organ perfusion during endotoxin-induced pulmonary arterial hypertension, Shock , vol. 34, pp. 488-494, 2010.

S. Stockmann, H. Gehring, E. Spies, M. Seyfarth, and L. Dibbelt,
Bestimmung von Prilocain im Plasma des Menschen mittels Hochleistungs-Flüssigkeitschromato-graphie (HPLC), 7. Jahrestagung DGKL , 2010.

T. Regueira, P.M. Lepper, S. Brandt, M. Ochs, M. Vuda, J. Takala, S.M. Jakob, and S. Djafarzadeh,
Hypoxia inducible factor-1 alpha induction by tumour necrosis factor-alpha, but not by toll-like receptor agonists, modulates cellular respiration in cultured human hepatocytes, Liver Int , vol. 29, pp. 1582-1592, 2009.

K. Junghanns, I. Graf, J. Pflüger, G. Wetterling, C. Ziems, D. Ehrenthal, M. Zöllner, L. Dibbelt, J. Backhaus, W. Weinmann, and F.M. Wurst,
Urinary ethyl glucuronide (EtG) and ethyl sulphate (EtS) assessment: valuable tools to improve verification of abstention in alcohol-dependent patients during in-patient treatment and at follow-ups, Addiction , vol. 104, pp. 921-26, 2009.

A. Schmoller, M. Voss, H. Gehring, S. Rudolf, U. Schweiger, B. Schultes, and K.M. Oltmanns,
Short Hypoxia Does not Affect Plasma Leptin in Healthy Men under Euglycemic Clamp Conditions, Int J Endocrinol , 2009.

M. Grossherr, A. Hengstenberg, L. Dibbelt, B.W. Igl, R. Noel, A. Knesebeck, P. Schmucker, and H. Gehring,
Propofol concentration in exhaled air and arterial plasma in mechanically ventilated patients undergoing cardiac surgery, Br J Anaesth , vol. 102, no. 5, pp. 608-13, 2009.

M. Beil, A. Opp, R. Linder, S. Boye, and H. Gehring,
Online-Classification of Capnographic Curves Using Artificial Neural Networks, in 4th European Conference of the International Federation for Medical and Biological Engineering (ECIFMBE) , 2009. pp. 1096-1099.

C. Hubold, U.E. Lang, H. Gehring, B. Schultes, U. Schweiger, A. Peters, R. Hellweg, and K.M. Oltmanns,
Increased serum brain-derived neurotrophic factor protein upon hypoxia in healthy young men, J Neural Transm , vol. 116, no. 10, pp. 1221-5, 2009.

L.B. Hiltebrand, O. Kimberger, M. Arnberger, S. Brandt, A. Kurz, and G.H. Sigurdsson,
Crystalloids versus colloids for goal-directed fluid therapy in major surgery, Crit Care , vol. 13, pp. R40, 2009.

O. Kimberger, M. Arnberger, S. Brandt, J. Plock, G.H. Sigurdsson, A. Kurz, and L. Hiltebrand,
Goal-directed colloid administration improves the microcirculation of healthy and perianastomotic colon, Anesthesiology , vol. 110, pp. 496-504, 2009.

F. Porta, H. Bracht, C. Weikert, M. Beck, J. Takala, S. Brandt, L.B. Hiltebrand, and S.M. Jakob,
Effects of endotoxin and catecholamines on hepatic mitochondrial respiration, Inflammation , vol. 32, pp. 315-321, 2009.

S. Brandt, T. Regueira, H. Bracht, F. Porta, S. Djafarzadeh, L. Takala, J. Gorrasi, E. Borotto, V. Krejci, L.B. Hiltebrandt, L.E. Bruegger, G. Beldi, L. Wilkens, P.M. Lepper, U. Kessler, and S.M. Jakob,
Effect of fluid resuscitation on mortality and organ function in experimental sepsis models, Crit Care , vol. 13, pp. R186, 2009.

B. Weber,
Development of Camera Based Functional Models for Spatially and Temporally Resolved Analysis of Drugtest Strips, Master's Thesis, Research Unit, Chemical and Biochemical Sensors, Drägerwerk AG, Lübeck , 2009.

M. Grossherr, A. Hengstenberg, L. Dibbelt, B.W. Igl, R. Noel, A. Knesebeck, P. Schmucker, and H. Gehring,
Blood gas partition coefficient and pulmonary extraction ratio for propofol in goats and pigs, Xenobiotica , vol. 39, no. 10, pp. 782-7, 2009.

A. Opp, U.G. Hofmann, S. Boye, L. Dibbelt, and H. Gehring,
A Sensor for the Non-invasive Determination of Hemoglobin in Sampling Tubes, IFMBE Proceedings , vol. 25, no. 7, pp. 590-2, 2009.

S. Brandt, J. Takala, and P.M. Lepper,
The Role of Hypoxia and Inflammation for the Expression and Regulation of Proteins Regulating Iron Metabolism., .... Berlin, Heidelberg, New York: Springer, 2008.

H. Heinze, B. Sedemund-Adib, M. Heringlake, U.W. Gosch, H. Gehring, and W. Eichler,
The impact of different step changes of inspiratory fraction of oxygen on functional residual capacity measurements using the oxygen washout technique in ventilated patients, Anesth Analg , vol. 106, no. 5, pp. 1491-4, 2008.

T. Wieschendorf, and L. Dibbelt,
Simultaneous determination of ethyl glucuronide and ethyl sulfate in human urine by liquid chromatography - mass spectrometry, 4. Jahrestagung DGKL , vol. Poster 4, 2008.

S.Z. Ali, H. Bracht, V. Krejci, M. Beck, M. Stadler, L. Hiltebrand, J. Takala, S. Brandt, and S.M. Jakob,
The immediate and sustained effects of volume challenge on regional blood flows in pigs, Anesth Analg , vol. 106, pp. 595-600, 2008.

A. Opp, S. Look, L. Dibbelt, S. Boye, and H. Gehring,
Non-invasive and direct determination of hemoglobin in nativ blood present in sampling tubes, Anesthesiology , vol. 109, pp. A1688, 2008.

H. Bracht, V. Krejci, L. Hiltebrand, S. Brandt, G.H. Sigurdsson, S.Z. Ali, J. Takala, and S.M. Jakob,
Orthogonal polarization spectroscopy to detect mesenteric hypoperfusion, Intensive Care Med , vol. 34, pp. 1883-1890, 2008.

T. Meier, H. Luepschen, J. Karsten, T. Leibecke, M. Grossherr, H. Gehring, and S. Leonhardt,
Assessment of regional lung recruitment and derecruitment during a PEEP trial based on electrical impedance tomography, Intensive Care Med , vol. 34, no. 3, pp. 543-50, 2008.

J. Kraitl, H. Ewald, and H. Gehring,
Analysis of time series for non-invasive characterization of blood components and circulation patterns, NONLINEAR ANALYSIS-HYBRID SYSTEMS , vol. 2, no. 2, pp. 441-455, 2008.

T. Regueira, B. Banzinger, S. Djafarzadeh, S. Brandt, J. Gorrasi, J. Takala, P.M. Lepper, and S.M. Jakob,
Norepinephrine to increase blood pressure in endotoxaemic pigs is associated with improved hepatic mitochondrial respiration, Crit Care , vol. 12, pp. R88, 2008.

M. Grossherr, E. Spies, A. Scheel, A. Hengstenberg, H. Gehring, and L. Dibbelt,
Differences of propofol concentrations in mammalian whole blood and in corresponding plasma samples analyzed by high performance liquid chromatography, Clin Lab , vol. 53, no. 5-6, pp. 315-9, 2007.

H. Gehring, L. Duembgen, M. Peterlein, S. Hagelberg, and L. Dibbelt,
Hemoximetry as the "gold standard"? Error assessment based on differences among identical blood gas analyzer devices of five manufacturers, Anesth Analg , vol. 105, no. 6, pp. 24-30, 2007.

M. Heringlake, U. Handke, T. Hanke, F. Eberhardt, J. Schumacher, H. Gehring, and H. Heinze,
Lack of agreement between thermodilution and electrical velocimetry cardiac output measurements, Intensive Care Med , vol. 33, no. 12, pp. 2168-72, 2007.

A. Opp, S. Hagelmann, and H. Gehring,
Motion Resistance of Pulse Oximeters: A Clinically Informative Test?, ANESTHESIA AND ANALGESIA , vol. 105, pp. S106-S106, 2007.

A. Opp, J. Kraitl, and H. Gehring,
Noninvasive Measurement of Hemoglobin Concentration, ANESTHESIA AND ANALGESIA , vol. 105, pp. S112-S112, 2007.

J. Kraitl, H. Ewald, and H. Gehring,
Optical sensor technology for a noninvasive medical blood diagnosis - art. no. 64450A, in PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) , G.-L. Cote, A.-V. Priezzhev, Eds. Optical Diagnostics and Sensing VII, 2007. pp. A4450-A4450.

O. Kimberger, E. Fleischmann, S. Brandt, A. Kugener, B. Kabon, L. Hiltebrand, V. Krejci, and A. Kurz,
Supplemental oxygen, but not supplemental crystalloid fluid, increases tissue oxygen tension in healthy and anastomotic colon in pigs, Anesth Analg , vol. 105, pp. 773-779, 2007.

S. Rehberg, S.S. Wienstroth, M. Hüppe, K. Sommer, H. Gehring, and T. Meier,
The use of the flexible laryngeal mask in children with adenoidectomy - a retrospective comparison with endotracheal intubation, Anasthesiol Intensivmed Notfallmed Schmerzther , vol. 42, no. 2, 2007.

B. Weber,
Nichtinvasive Echtzeit-Temperaturbestimmung bei Laserphotokoagulation der Netzhaut, Diplomarbeit, Institut für Biomedizinische Optik, Universität Lübeck, Lübeck , 2006.

H. Gehring,
Pulse oximeter in a comparative test, INTENSIVE CARE MEDICINE , vol. 32, no. 9, pp. 1287-1289, 2006.

K.M. Oltmanns, H. Gehring, S. Rudolf, B. Schultes, U. Schweiger, J. Born, H.L. Fehm, and A. Peters,
Persistent suppression of resting energy expenditure after acute hypoxia, Metabolism , vol. 55, no. 5, pp. 669-75, 2006.

M. Grossherr, A. Hengstenberg, T. Meier, L. Dibbelt, K. Gerlach, and H. Gehring,
Discontinuous monitoring of propofol concentrations in expired alveolar gas and in arterial and venous plasma during artificial ventilation, Anesthesiology , vol. 104, no. 4, pp. 786-90, 2006.

T. Meier, T. Leibecke, C. Eckmann, U.W. Gosch, M. Grossherr, H.P. Bruch, and H. Gehring,
Leonhardt S. Electrical impedance tomography: changes in distribution of pulmonary ventilation during laparoscopic surgery in a porcine model, Langenbecks Arch Surg , vol. 391, no. 4, pp. 383-9, 2006.

N. Stein, H. Matz, A. Schneeweiss, C. Eckmann, A. Roth-Isigkeit, M. Hüppe, and H. Gehring,
An evaluation of a transcutaneous and an end-tidal capnometer for noninvasive monitoring of spontaneously breathing patients, Respir Care , vol. 51, no. 10, pp. 1162-6, 2006.

K.M. Oltmanns, H. Gehring, S. Rudolf, B. Schultes, C. Hackenberg, U. Schweiger, J. Born, H.L. Fehm, and A. Peters,
Acute hypoxia decreases plasma VEGF concentration in healthy humans, Am J Physiol Endocrinol Metab , vol. 290, no. 3, pp. 434-9, 2006.

J. Kraitl, H. Ewald, and H. Gehring,
An optical device to measure blood components by a photoplethysmographic method, in 3rd Biennial Photon04 Conference Location: Glasgow Caledonian Univ, , JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS, 2005. pp. S318-S324.

P. Biher, N. Rotter, J. Grabbe, H. Gehring, and T. Meier,
Unclear intraoperativem cardiorespiratory decompensation. Anaphylactic reaction?, Anaesthesist , vol. 54, no. 9, pp. 895-901, 2005.

M. Grossherr, A. Hengstenberg, U. Beckmann, T. Meier, L. Dibbelt, and H. Gehring,
Atemgas-Monitoring für Propofol -- eine Pilotuntersuchung, Anästhesist , 2004.

H. Gehring, L. Dibbelt, and U. Oesinghaus,
Datenbericht: Anwender-Untersuchung und Vergleichstest Blutgasanalysatoren, Universitätsklinikum Schleswig-Holstein , 2004.

K.M. Oltmanns, H. Gehring, S. Rudolf, B. Schultes, S. Rook, U. Schweiger, J. Born, H.L. Fehm, and A. Peters,
Hypoxia causes glucose intolerance in humans, Am J Respir Crit Care Med , vol. 169, no. 11, pp. 1231-7, 2004.

P.D. Mannheimer, P.B. Batchelder, M. Larsen, H. Gehring, and E. Konecny,
The use of pulse oximeter functional testers in evaluating SpO2 accuracy, Anesth Analg , vol. 99, no. 6, pp. 1871, 2004.

H. Graefe, B. Gütschow, H. Gehring, and L. Dibbelt,
Sensitive and specific photometric determination of mannitol in human serum, Clin Chem Lab Med , vol. 41, no. 8, pp. 1049-55, 2003.

H. Gehring, C. Hornberger, H. Matz, E. Konecny, and P. Schmucker,
The effects of motion artifact and low perfusion on the performance of a new generation of pulse oximeters in volunteers undergoing hypoxemia, Respir Care , vol. 47, no. 1, pp. 48-60, 2002.

H. Gehring,
Risks concerning oxygen in laser surgery, Anasthesiol Intensivmed Notfallmed Schmerzther , vol. 37, no. 1, pp. 43-51, 2002.

J. Weng, H. Matz, H. Gehring, and E. Konecny,
Relationship between blood pressure and finger photoplethysmographic waveform during oxygen desaturation test: a model fitting approach, Biomed Tech (Berl) , vol. 47, pp. 233-4, 2002.

A. Roth-Isigkeit, E. Ocklitz, S. Brückner, A. Ros, L. Dibbelt, H.J. Friedrich, H. Gehring, and P. Schmucker,
Development and evaluation of a video program for presentation prior to elective cardiac surgery, Acta Anaesthesiol Scand , vol. 46, no. 4, pp. 415-23, 2002.

H. Gehring, C. Hornberger, L. Dibbelt, V. Dörges, R. Eichenauer, and P. Schmucker,
Detecting and quantifying absorbed irrigation fluid by measuring mannitol and sorbitol concentrations in serum samples, and by ethanol monitoring, BJU Int , vol. 89, no. 3, pp. 202-7, 2002.

C. Hornberger, H. Matz, E. Konecny, H. Frankenberger, R. Bonk, J. Avgerinos, K. Benekos, J. Valais, A. Ikiades, J. Gil-Rodriguez, P. Wouters, G. Meyfroidt, L. Ponz, and H. Gehring,
Design and validation of a pulse oximeter calibrator, Anesth Analg , vol. 94, no. 1, pp. 8-12, 2002.

B. Krieter, H. Matz, E. Konecny, and H. Gehring,
Continuous bilateral auscultation as perioperative monitoring of ventilation: comparison of 2 systems for registering respiratory sounds, Biomed Tech (Berl) , vol. 47, pp. 561-3, 2002.

H. Gehring, C. Hornberger, L. Dibbelt, A. Rothsigkeit, K. Gerlach, J. Schumacher, and P. Schmucker,
Accuracy of point-of-care-testing (POCT) for determining hemoglobin concentrations, Acta Anaesthesiol Scand , vol. 46, no. 8, pp. 980-6, 2002.

Ch. Hornberger, P. Knoop, H. Matz, F. Dörries, E. Konecny, H. Gehring, J. Otten, R. Bonk, H. Frankenberger, P. Wouters, J. Gil-Rodriguez, L. Ponz, J. Avgerinos, A. Karoutis, A. Ikiades, and S. Weininger,
A prototype device for standardized calibration of pulse oximeters II, J Clin Monit Comput , vol. 17, no. 3-4, pp. 203-9, 2002.

V. Dörges, V. Wenzel, A. Kühl, S. Dixand M. Hüppe, H. Gehring, T. Schumann, and K. Gerlach,
Emergency medical service transport-induced stress? An experimental approach with healthy volunteers, Resuscitation , vol. 49, no. 2, pp. 151-7, 2001.

A. Roth-Isigkeit, L. Hasselbach, E. Ocklitz, S. Brückner, A. Ros, H. Gehring, P. Schmucker, L. Rink, and M. Seyfarth,
Inter-individual differences in cytokine release in patients undergoing cardiac surgery with cardiopulmonary bypass, Clin Exp Immunol , vol. 125, no. 1, pp. 80-8, 2001.

C. Hornberger, P. Knoop, W. Nahm, H. Matz, E. Konecny, H. Gehring, R. Bonk, H. Frankenberger, G. Meyfroidt, P. Wouters, J. Gil-Rodriguez, L. Ponz, K. Benekos, J. Valais, J. Avgerinos, A. Karoutis, A. Ikiades, and S. Weininger,
A prototype device for standardized calibration of pulse oximeters, J Clin Monit Comput , vol. 16, no. 3, pp. 161-9, 2000.

B. Gütschow, H. Graefe, H. Gehring, and L. Dibbelt,
A sensitive and specific photometric assay for the determination of mannitol in human serum, J Lab Med , vol. 24, pp. 489, 2000.

H. Gehring, C. Hornberger, H. Graefe, R. Schäfer, R. Eichenauer, and L. Dibbelt,
Near-patient determination of mannitol for the monitoring of irrigation fluid absorption, Anesthesiology , vol. 93, pp. A559, 2000.

W. Nahm, G. Stockmanns, J. Petersen, H. Gehring, E. Konecny, H.D. Kochs, and E. Kochs,
Concept for an intelligent anaesthesia EEG monitor, Med Inform Internet Med , vol. 24, no. 1, pp. 1-9, 1999.

H. Gehring, W. Nahm, K. Zimmermann, P. Fornara, E. Ocklitz, and P. Schmucker,
Irrigating fluid absorption during percutaneous nephrolithotripsy, Acta Anaesthesiol Scand , vol. 43, no. 3, pp. 316-21, 1999.

H. Gehring, W. Nahm, J. Baerwald, P. Fornara, A. Schneeweiss, A. Roth-Isigkeit, and P. Schmucker,
Irrigation fluid absorption during transurethral resection of the prostate: spinal vs. general anaesthesia, Acta Anaesthesiol Scand , vol. 43, no. 4, pp. 458-63, 1999.

H. Gehring, W. Nahm, D. Hufker, A. Schmitz, E. Ocklitz, W. Mertins, and P. Schmucker,
The effect of temperature and humidity on breath samples. Measurement of breath ethanol concentration in artificially respirated patients, Anaesthesist , vol. 47, no. 1, pp. 39-44, 1998.

F. Renner, A. Schmitz, and H. Gehring,
Rapid and sensitive gas chromatography-mass spectroscopy method for the detection of mannitol and sorbitol in serum samples, Clin Chem , vol. 44, no. 4, pp. 886-7, 1998.

A. Roth-Isigkeit, J. Schwarzenberger, T. Borstel, H. Gehring, E. Ocklitz, K. Wagner, P. Schmucker, and M. Seyfarth,
Perioperative cytokine release during coronary artery bypass grafting in patients of different ages, Clin Exp Immunol , vol. 114, no. 1, pp. 26-32, 1998.

H. Gehring, K. Kuhmann, K.F. Klotz, E. Ocklitz, A. Roth-Isigkeit, B. Sedemund-Adib, and P. Schmucker,
Effects of propofol vs isoflurane on respiratory gas exchange during laparoscopic cholecystectomy, Acta Anaesthesiol Scand , vol. 42, no. 2, pp. 189-94, 1998.

H. Gehring, W. Nahm, D. Hufker, A. Schmitz, W. Mertins, H. Frankenberger, and E. Konecny,
Measuring breath alcohol concentration during artificial ventilation. Model studies of the effect of temperature and humidity on measurements by various sampling systems, Biomed Tech (Berl) , vol. 43, no. 3, pp. 40-6, 1998.

C. Hornberger, W. Nahm, P. Knoop, H. Gehring, P. Wouters, and E. Konecny,
Noninvasive detection of blood spectra by time resolved in vivo spectroscopy, Biomed Tech (Berl) , vol. 42, pp. 217-8, 1997.

H. Gehring, and P. Schmucker,
Pneumoperitoneum and nitrous oxide, Anaesthesist , vol. 46, no. 10, pp. 895-6, 1997.

A. Roth-Isigkeit, J. Schwarzenberger, J. Brechmann, H. Gehring, K.F. Klotz, and P. Schmucker,
The preparation for elective interventions--the spectrum and dissemination of somatic and psychological measures in Germany, Anaesthesiol Intensivmed Notfallmed Schmerzther , vol. 32, no. 11, pp. 654-8, 1997.

H. Gehring, W. Nahm, D. Hufker, A. Schmitz, W. Mertins, and E. Konecny,
Measuring breath alcohol concentration during artificial ventilation. Model studies of the effect of temperature and humidity on the reproducibility of measurements of various sampling systems, Biomed Tech (Berl) , vol. 42, pp. 356-7, 1997.

W. Nahm, H. Gehring, J. Abke, M. Wunderlich, G. Stockmanns, and E. Konecny,
Development and realization of an EEG simulator, Biomed Tech (Berl) , vol. 42, pp. 27-8, 1997.

H. Gehring, L. Meyer Westrup, S. Berndt, E. Joubert-Hübner, S. Eleftheriadis, and P. Schmucker,
A new probe holding device for continuous bilateral measurements of blood flow velocity in basal brain vessels, Anaesthesiol Intensivmed Notfallmed Schmerzther , vol. 32, no. 6, pp. 355-9, 1997.

H. Gehring, W. Nahm, J. Baerwald, E. Konecny, and P. Schmucker,
Breath alcohol analyzers with electrochemical sensory--accuracy of measurements in lung model ventilation, Biomed Tech (Berl) , vol. 41, no. 3, pp. 54-9, 1996.

H. Gehring, W. Nahm, K.F. Klotz, A. Knipper, K. Zimmermann, J. Baerwald, and P. Schmucker,
Measurement of expired alcohol concentrations with a new electrochemical sensor. A model investigation to determine interference with volatile anesthetics and clinical application, Anaesthesist , vol. 45, no. 2, pp. 154-62, 1996.

H. Gehring, W. Nahm, and D. Hufker,
Measurement of pulmonary CO2 elimination - Investigation using different gas mixtures in a lung model, BIOMEDIZINISCHE TECHNIK , vol. 41, no. 11, pp. 324-330, 1996.

H. Gehring, W. Nahm, D. Hufker, W. Mertins, E. Konecny, H. Frankenberger, and P. Schmucker,
Measuring pulmonary CO2 elimination--studies with the lung model using various mixed gases, Biomed Tech (Berl) , vol. 41, no. 11, pp. 324-30, 1996.

H. Gehring, W. Nahm, K.F. Klotz, O. Zais, R. Schreiber, P. Schüren, and P. Schmucker,
Plasma volume determination with ICG dye in changes of intravascular volume. Dye dilution method before and after autologous blood donation and after retransfusion in the human, Infusionsther Transfusionsmed , vol. 23, no. 2, pp. 86-91, 1996.

W. Nahm, and H. Gehring,
Noninvasive in-vivo measurement of blodd spectrum by time-resolved near-infrared spectroscopy, in 2nd European Conference on Optical Chemical Sensors and Biosensors (EUROPT(R)ODE II) , 1995. pp. 174-179.

K.F. Klotz, H. Gellersen, T. Brzelinski, B. Sedemund-Adib, and H. Gehring,
Use of prostacyclin in patients with continuous hemofiltration after open heart surgery, Contrib Nephrol , vol. 116, pp. 136-9, 1995.

Shen Lin, and Brian W. Kernighan,
An Effective Heuristic Algorithm for the Travelling-Salesman Problem, Operations Research , vol. 21, pp. 498--516, 1973.