Results 1 to 10 of about 34,853 (259)

Implantable Impedance Plethysmography [PDF]

Sensors, 2014
We demonstrate by theory, as well as by ex vivo and in vivo measurements that impedance plethysmography, applied extravascularly directly on large arteries, is a viable method for monitoring various cardiovascular parameters, such as blood pressure, with
Andreas Seifert, Claudia Heilmann, Yiannos Manoli   +2 more
exaly   +8 more sources

SMΝΔ7 mice show breathing and airflow defects with significant pathology of respiratory and oral tract tissues [PDF]

Frontiers in Cellular Neuroscience
IntroductionSpinal muscular atrophy (SMA) is a neurodegenerative disorder caused by SMN1 mutations, leading to SMN protein deficiency and motor neuron loss.
Roxanne Muchow, Roxanne Muchow, Michelle Woolridge, Michelle Woolridge, Catherine L. Smith, Catherine L. Smith, F. Javier Llorente Torres, F. Javier Llorente Torres, Dennis Perez-Lopez, Dennis Perez-Lopez, Nicole L. Nichols, Nicole L. Nichols, Monique A. Lorson, Monique A. Lorson, Christian L. Lorson, Christian L. Lorson   +15 more
doaj   +2 more sources

Evaluation of Electrical and Optical Plethysmography Sensors for Noninvasive Monitoring of Hemoglobin Concentration

Sensors, 2012
Completely noninvasive monitoring of hemoglobin concentration has not yet been fully realized in the clinical setting. This study investigates the viability of measuring hemoglobin concentration noninvasively by evaluating the performance of two types of
Panayiotis A Kyriacou, Justin Phillips, Michelle Hickey   +2 more
exaly   +3 more sources

Estimation of heart rate variability from finger photoplethysmography during rest, mild exercise and mild mental stress

Journal of Electrical Bioimpedance, 2021
Due to the possibilities in miniaturization and wearability, photoplethysmography (PPG) has recently gained a large interest not only for heart rate measurement, but also for estimating heart rate variability, which is derived from ECG by convention. The
Singstad Bjørn-Jostein, Azulay Naomi, Bjurstedt Andreas, Bjørndal Simen S., Drageseth Magnus F., Engeset Peter, Eriksen Kari, Gidey Muluberhan Y., Granum Espen O., Greaker Matias G., Grorud Amund, Hewes Sebastian O., Hou Jie, Llop Recha Adrián M., Matre Christoffer, Seputis Arnoldas, Sørensen Simen E., Thøgersen Vegard, Joten Vegard Munkeby, Tronstad Christian, Martinsen Ørjan G.   +20 more
doaj   +1 more source

Evaluating endovenous laser and glue ablation in the treatment of great saphenous vein insufficiency: A 5-year retrospective comparative study

Turkish Journal of Vascular Surgery, 2023
Aim: The use of endovascular thermal and nonthermal methods in the treatment of chronic venous insufficiency has been in practice for over 10 years. The early results of these practices have been published and extensively discussed.
Hakan Guven
doaj   +1 more source

Perfusion index as an early predictor of hypotension following spinal anesthesia for cesarean section

Journal of Obstetric Anaesthesia and Critical Care, 2020
Introduction: Hypotension is a common complication after spinal anesthesia for cesarean delivery which is caused by sympathetic block 1. This can result in adverse maternal and fetal outcomes.
Roshana Prasad Mallawaarachchi, Vasanthi Pinto, P H D P De Silva   +2 more
doaj   +1 more source

Thoracoabdominal asynchrony: Two methods in healthy, COPD, and interstitial lung disease patients. [PDF]

PLoS ONE, 2017
Thoracoabdominal asynchrony is the nonparallel motion of the ribcage and abdomen. It is estimated by using respiratory inductive plethysmography and, recently, using optoelectronic plethysmography; however the agreement of measurements between these 2 ...
Mayra Caleffi Pereira, Desiderio Cano Porras, Adriana Claudia Lunardi, Cibele Cristine Berto Marques da Silva, Renata Cléia Claudino Barbosa, Letícia Zumpano Cardenas, Renata Pletsch, Jeferson George Ferreira, Isac de Castro, Celso Ricardo Fernandes de Carvalho, Pedro Caruso, Carlos Roberto Ribeiro de Carvalho, André Luis Pereira de Albuquerque   +12 more
doaj   +1 more source

Preoperative “R wave amplitude variation” on electrocardiogram predicts severe hypovolemia

Annals of Cardiac Anaesthesia, 2019
Preoperative fasting is essential to prevent aspiration and associated complications. However, quite often patients end up fasting for 12 h or more due to changes in the operating room schedules, delays, and postponements.
Sohan Lal Solanki, Pooja P Kumar, Reshma P Ambulkar   +2 more
doaj   +1 more source

Different perspectives for monitoring nociception during general anesthesia [PDF]

Korean Journal of Anesthesiology, 2022
Safe anesthesia is achieved using objective methods that estimate the patient’s state during different phases of surgery. A patient’s state under anesthesia is characterized by three major aspects, which are linked to the main effects produced by each of
Pablo Martinez-Vazquez, Erik Weber Jensen   +1 more
doaj   +1 more source

Evaluation of perfusion index as an objective tool to assess analgesia during laparoscopic surgeries under general anaesthesia

Indian Journal of Anaesthesia, 2022
Background and Aims: Changes in the sympathetic nervous system by pain can impact smooth muscle tone and can alter perfusion. This can be monitored by perfusion index (PI).
C Surekha, Venkata S Eadara, M N Satish Kumar   +2 more
doaj   +1 more source