Results 41 to 50 of about 4,035,259 (343)

Assessment of stroke volume variation

Critical Care, 2006
The specific interactions of the lungs and the cardiovascular system under mechanical ventilation cause cyclic variations of left ventricular stroke volume (SVV). Real-time measurement of SVV using arterial pulse contour analysis is useful to predict volume responsiveness and to monitor volume therapy in mechanically ventilated patients. In this study,
A. De Weger, Jos R. C. Jansen, P. C. M. Van Den Berg, R. B. P. de Wilde   +3 more
openaire   +2 more sources

THE STROKE VOLUME IN JUVENILE BORDERLINE HYPERTENSION

Japanese Circulation Journal, 1975
Hemodynamic changes in supine and upright position and during exercise were studied in 144 men including 37 normal subjects and 107 patients with borderline hypertension. Borderline hypertensives were classified in 4 groups, according to the basal level of heart rate and stroke index. In the first two groups, stroke index was normal, but heart rate was
Safar Me, Y. A. Weiss, London Gm, P.L. Milliez   +3 more
openaire   +4 more sources

Using the Pulse Contour Method to Measure the Changes in Stroke Volume during a Passive Leg Raising Test

Sensors, 2018
The pulse contour method is often used with the Windkessel model to measure stroke volume. We used a digital pressure and flow sensors to detect the parameters of the Windkessel model from the pulse waveform. The objective of this study was to assess the
Chun-Hung Su, Shing-Hong Liu, Tan-Hsu Tan, Chien-Hsien Lo   +3 more
doaj   +1 more source

Relationship between Stroke Volume and Pulse Pressure during Blood Volume Perturbation: A Mathematical Analysis

BioMed Research International, 2014
Arterial pulse pressure has been widely used as surrogate of stroke volume, for example, in the guidance of fluid therapy. However, recent experimental investigations suggest that arterial pulse pressure is not linearly proportional to stroke volume ...
Ramin Bighamian, J. Hahn
semanticscholar   +1 more source

Biophysical characterization and ion transport with cell‐based and proteoliposome reconstitution assays of invertebrate K+‐Cl− cotransporters

FEBS Open Bio, EarlyView.
The K+‐Cl− cotransporters (KCCs) facilitate the symport of ions across the plasma membrane. They participate in physiological processes including neuronal regulation. Here, we characterized KCCs from Drosophila and Hydra vulgaris. Comparative analyses of transporters provide insights into the mechanism of KCC ion transport, regulation, and evolution ...
Satoshi Fudo, Marina Verkhovskaya, Coralie Di Scala, Claudio Rivera, Tommi Kajander   +4 more
wiley   +1 more source

Improvement of Left Ventricular Ejection Time Measurement in the Impedance Cardiography Combined with the Reflection Photoplethysmography

Sensors, 2018
Cardiac stroke volume (SV) is an essential hemodynamic indicator that can be used to assess whether the pump function of the heart is normal. Non-invasive SV measurement is currently performed using the impedance cardiography (ICG).
Shing-Hong Liu, Jia-Jung Wang, Chun-Hung Su, Da-Chuan Cheng   +3 more
doaj   +1 more source

Mildly Increased Renin Expression in the Absence of Kidney Injury in the Murine Transverse Aortic Constriction Model

Frontiers in Pharmacology, 2021
Cardiorenal syndrome type 2 is characterized by kidney failure as a consequence of heart failure that affects >50% of heart failure patients. Murine transverse aortic constriction (TAC) is a heart failure model, where pressure overload is induced on ...
Marian Wesseling, Marian Wesseling, Eva Mulder, Maike A. D. Brans, Daniek. M. C. Kapteijn, Marian Bulthuis, Gerard Pasterkamp, Marianne C. Verhaar, A. H. Jan Danser, Harry van Goor, Jaap A. Joles, Saskia C. A. de Jager, Saskia C. A. de Jager   +12 more
doaj   +1 more source

Left Atrial Volume Index Is Associated With Cardioembolic Stroke and Atrial Fibrillation Detection After Embolic Stroke of Undetermined Source.

Stroke, 2019
Background and Purpose- Left atrial enlargement has been shown to be associated with ischemic stroke, but the association with embolic stroke mechanisms remains unknown. We aim to study the associations between left atrial volume index (LAVI) and embolic
Kevin Jordan, S. Yaghi, A. Poppas, Andrew D Chang, B. M. Mac Grory, S. Cutting, Tina Burton, M. Jayaraman, G. Tsivgoulis, M. Khaled Sabeh, A. Merkler, H. Kamel, Mitchell S. V. Elkind, K. Furie, Christopher Song   +14 more
semanticscholar   +1 more source

Compound Heterozygous MRPS14 Variants Associated With Leigh Syndrome

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT MRPS14 (uS14m) is a nuclear‐encoded ribosomal protein important for mitochondria‐specific translation. To date, only a single individual with a recessive MRPS14‐related disorder (also known as COXPD38) has been reported. We report an additional subject possessing novel compound heterozygous MRPS14 variants (p.Asp37Asn, p.Asn60Asp). The subject
Maria Gabriela Otero, Christina Freeman, Ruchi Shah, Renkui Bai, Hong Cui, Marian Castro, Zachary Myers, Eric Choy, Derek Chan, Molly Easter, Sophia Y. Zhao, Madeline Babros, Ruchi Garg, Matthew Deardorff, Franklin Moser, Tyler Mark Pierson   +15 more
wiley   +1 more source

Thrombectomy 6 to 24 Hours after Stroke with a Mismatch between Deficit and Infarct

New England Journal of Medicine, 2018
BACKGROUND The effect of endovascular thrombectomy that is performed more than 6 hours after the onset of ischemic stroke is uncertain. Patients with a clinical deficit that is disproportionately severe relative to the infarct volume may benefit from ...
R. Nogueira, A. Jadhav, D. Haussen, A. Bonafe, R. Budzik, Parita Bhuva, D. Yavagal, M. Ribó, C. Cognard, R. Hanel, C. Sila, Ameer E. Hassan, M. Millán, E. Levy, P. Mitchell, M. Chen, J. English, Q. Shah, F. Silver, V. Pereira, B. Mehta, B. Baxter, M. Abraham, P. Cardona, E. Veznedaroglu, F. Hellinger, Lei Feng, J. Kirmani, D. Lopes, B. Jankowitz, M. Frankel, V. Costalat, N. Vora, A. Yoo, A. Malik, A. Furlan, M. Rubiera, A. Aghaebrahim, J. Olivot, W. Tekle, Ryan Shields, T. Graves, R. Lewis, W. Smith, D. Liebeskind, J. Saver, T. Jovin   +46 more
semanticscholar   +1 more source