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Keywords Invasive Arterial Blood Pressu...

Invasive Arterial Blood Pressure Monitoring

https://read.qxmd.com/read/38352556/derivation-external-validation-and-clinical-implications-of-a-deep-learning-approach-for-intracranial-pressure-estimation-using-non-cranial-waveform-measurements
#21
Faris Gulamali, Pushkala Jayaraman, Ashwin S Sawant, Jacob Desman, Benjamin Fox, Annie Chang, Brian Y Soong, Naveen Arivazaghan, Alexandra S Reynolds, Son Q Duong, Akhil Vaid, Patricia Kovatch, Robert Freeman, Ira S Hofer, Ankit Sakhuja, Neha S Dangayach, David S Reich, Alexander W Charney, Girish N Nadkarni
IMPORTANCE: Increased intracranial pressure (ICP) is associated with adverse neurological outcomes, but needs invasive monitoring. OBJECTIVE: Development and validation of an AI approach for detecting increased ICP (aICP) using only non-invasive extracranial physiological waveform data. DESIGN: Retrospective diagnostic study of AI-assisted detection of increased ICP. We developed an AI model using exclusively extracranial waveforms, externally validated it and assessed associations with clinical outcomes...
January 30, 2024: medRxiv
https://read.qxmd.com/read/38316842/comparison-of-noninvasive-cardiac-output-and-stroke-volume-measurements-using-electrical-impedance-tomography-with-invasive-methods-in-a-swine-model
#22
JOURNAL ARTICLE
Chi Ryang Chung, Ryoung Eun Ko, Geuk Young Jang, Kyounghun Lee, Gee Young Suh, Yongmin Kim, Eung Je Woo
Pulmonary artery catheterization (PAC) has been used as a clinical standard for cardiac output (CO) measurements on humans. On animals, however, an ultrasonic flow sensor (UFS) placed around the ascending aorta or pulmonary artery can measure CO and stroke volume (SV) more accurately. The objective of this paper is to compare CO and SV measurements using a noninvasive electrical impedance tomography (EIT) device and three invasive devices using UFS, PAC-CCO (continuous CO) and arterial pressure-based CO (APCO)...
February 5, 2024: Scientific Reports
https://read.qxmd.com/read/38274937/comparison-of-ultrasound-guided-versus-palpatory-method-of-posterior-tibial-artery-cannulation-a-prospective-randomized-controlled-study
#23
JOURNAL ARTICLE
Jhansi Eda, Priyanka Gupta, Ashutosh Kaushal
INTRODUCTION: Superficial arteries, such as radial and dorsalis pedis arteries, are commonly cannulated for invasive blood pressure monitoring. Failure to cannulate these arteries necessitates alternate arteries, such as the posterior tibial artery (PTA). The deep-seated anatomy of PTA makes arterial cannulation precarious by the palpatory technique. Ultrasound guidance during PTA cannulation may overcome this problem. With this background, we evaluated the ultrasound-guided (USG) versus palpatory method for PTA cannulation with respect to the first attempt's success and number of attempts...
December 2023: Curēus
https://read.qxmd.com/read/38257535/were-frailty-identification-criteria-created-equal-a-comparative-case-study-on-continuous-non-invasively-collected-neurocardiovascular-signals-during-an-active-standing-test-in-the-irish-longitudinal-study-on-ageing-tilda
#24
JOURNAL ARTICLE
Feng Xue, Silvin Knight, Emma Connolly, Aisling O'Halloran, Morgana Afonso Shirsath, Louise Newman, Eoin Duggan, Rose Anne Kenny, Roman Romero-Ortuno
BACKGROUND: In this observational study, we compared continuous physiological signals during an active standing test in adults aged 50 years and over, characterised as frail by three different criteria, using data from The Irish Longitudinal Study on Ageing (TILDA). METHODS: This study utilised data from TILDA, an ongoing landmark prospective cohort study of community-dwelling adults aged 50 years or older in Ireland. The initial sampling strategy in TILDA was based on random geodirectory sampling...
January 11, 2024: Sensors
https://read.qxmd.com/read/38247909/evaluation-of-morlet-wavelet-analysis-for-artifact-detection-in-low-frequency-commercial-near-infrared-spectroscopy-systems
#25
JOURNAL ARTICLE
Tobias Bergmann, Logan Froese, Alwyn Gomez, Amanjyot Singh Sainbhi, Nuray Vakitbilir, Abrar Islam, Kevin Stein, Izzy Marquez, Fiorella Amenta, Kevin Park, Younis Ibrahim, Frederick A Zeiler
Regional cerebral oxygen saturation (rSO2 ), a method of cerebral tissue oxygenation measurement, is recorded using non-invasive near-infrared Spectroscopy (NIRS) devices. A major limitation is that recorded signals often contain artifacts. Manually removing these artifacts is both resource and time consuming. The objective was to evaluate the applicability of using wavelet analysis as an automated method for simple signal loss artifact clearance of rSO2 signals obtained from commercially available devices...
December 27, 2023: Bioengineering
https://read.qxmd.com/read/38240278/value-and-variability-of-pulse-shape-indicator-for-estimating-mean-arterial-pressure-in-the-radial-and-femoral-arteries
#26
JOURNAL ARTICLE
Mathieu Jozwiak, Sandrine Millasseau, Jean-Louis Teboul, Romain Lombardi, Raphaël Devanlay, Emilien Umbdenstock, Lucas Morand, Jean Dellamonica, Denis Chemla
BACKGROUND: The form factor (FF) is a pulse shape indicator that corresponds to the fraction of pulse pressure added to diastolic blood pressure to estimate the time-averaged mean arterial pressure (MAP). Our invasive study assessed the FF value and variability at the radial and femoral artery levels and evaluated the recommended fixed FF value of 0.33. METHODS AND RESULTS: Hemodynamically stable patients were prospectively included in 2 intensive care units. FF was documented at baseline and during dynamic maneuvers...
January 19, 2024: Journal of the American Heart Association
https://read.qxmd.com/read/38239522/correlating-the-depth-of-sedation-between-the-ramsay-sedation-scale-and-bispectral-index-using-either-intravenous-midazolam-or-intravenous-propofol-in-elderly-patients-under-spinal-anaesthesia
#27
JOURNAL ARTICLE
Abhinav Sachdeva, Sofia Jaswal, Harsimran S Walia, Y K Batra
BACKGROUND: Supplementation of spinal anaesthesia with sedatives or anxiolytics has emerged as a standard protocol to alleviate patients' anxiety and to produce amnesia during the surgical procedure. Thus, judicious use of sedation can make surgeries under spinal anaesthesia more comfortable and acceptable for the elderly patient, the surgeon, and the anaesthesiologist. However, over-sedation may jeopardise the safety of the patient. Appropriate sedation helps reduce physiological stress, which leads to a better result...
December 2023: Curēus
https://read.qxmd.com/read/38238636/cerebral-autoregulation-derived-blood-pressure-targets-in-elective-neurosurgery
#28
JOURNAL ARTICLE
Erta Beqiri, Marta García-Orellana, Anna Politi, Frederick A Zeiler, Michal M Placek, Neus Fàbregas, Jeanette Tas, Veerle De Sloovere, Marek Czosnyka, Marcel Aries, Ricard Valero, Nicolás de Riva, Peter Smielewski
Poor postoperative outcomes may be associated with cerebral ischaemia or hyperaemia, caused by episodes of arterial blood pressure (ABP) being outside the range of cerebral autoregulation (CA). Monitoring CA using COx (correlation between slow changes in mean ABP and regional cerebral O2 saturation-rSO2 ) could allow to individualise the management of ABP to preserve CA. We aimed to explore a continuous automated assessment of ABPOPT (ABP where CA is best preserved) and ABP at the lower limit of autoregulation (LLA) in elective neurosurgery patients...
January 19, 2024: Journal of Clinical Monitoring and Computing
https://read.qxmd.com/read/38238507/cardiac-output-estimation-using-ballistocardiography-a-feasibility-study-in-healthy-subjects
#29
JOURNAL ARTICLE
Johannes Nordsteien Svensøy, Erik Alonso, Andoni Elola, Reidar Bjørnerheim, Johan Ræder, Elisabete Aramendi, Lars Wik
There is no reliable automated non-invasive solution for monitoring circulation and guiding treatment in prehospital emergency medicine. Cardiac output (CO) monitoring might provide a solution, but CO monitors are not feasible/practical in the prehospital setting. Non-invasive ballistocardiography (BCG) measures heart contractility and tracks CO changes. This study analyzed the feasibility of estimating CO using morphological features extracted from BCG signals. In 20 healthy subjects ECG, carotid/abdominal BCG, and invasive arterial blood pressure based CO were recorded...
January 19, 2024: Scientific Reports
https://read.qxmd.com/read/38229508/chitosan-nanoclay-embolic-material-for-catheter-directed-arterial-embolization
#30
JOURNAL ARTICLE
George Varghese P J, Keren Zhao, Peng Chen, Jingjie Hu
Minimally invasive transcatheter embolization is a common nonsurgical procedure in interventional radiology. It is used for the deliberate occlusion of blood vessels for the treatment of disease or injured vasculature, including vascular malformation and malignant/benign tumors. Here, we introduce a gel embolic agent comprising chitosan nanofibers and nanoclay with excellent catheter injectability and tunable mechanical properties for embolization. The properties of the gel were optimized by varying the ratio between each individual component and also adjusting the total solid content...
January 16, 2024: Journal of Biomedical Materials Research. Part A
https://read.qxmd.com/read/38217717/evolving-trends-in-the-surgical-anaesthetic-and-intensive-care-management-of-acute-spinal-cord-injuries-in-the-uk
#31
JOURNAL ARTICLE
Hasan Asif, Samuel Ern Hung Tsan, Argyro Zoumprouli, Marios C Papadopoulos, Samira Saadoun
PURPOSE: We surveyed the treatment of acute spinal cord injuries in the UK and compared current practices with 10 years ago. METHODS: A questionnaire survey was conducted amongst neurosurgeons, neuroanaesthetists, and neurointensivists that manage patients with acute spinal cord injuries. The survey gave two scenarios (complete and incomplete cervical spinal cord injuries). We obtained opinions on the speed of transfer, timing and aim of surgery, choice of anaesthetic, intraoperative monitoring, targets for physiological parameters, and drug treatments...
January 13, 2024: European Spine Journal
https://read.qxmd.com/read/38215002/accuracy-of-noninvasive-blood-pressure-monitoring-in-critically-ill-adults
#32
JOURNAL ARTICLE
Erin N Haber, Rajiv Sonti, Suzanne M Simkovich, C William Pike, Christian L Boxley, Allan Fong, William S Weintraub, Nathan K Cobb
BACKGROUND: Blood pressure (BP) is routinely invasively monitored by an arterial catheter in the intensive care unit (ICU). However, the available data comparing the accuracy of noninvasive methods to arterial catheters for measuring BP in the ICU are limited by small numbers and diverse methodologies. PURPOSE: To determine agreement between invasive arterial blood pressure monitoring (IABP) and noninvasive blood pressure (NIBP) in critically ill patients. METHODS: This was a single center, observational study of critical ill adults in a tertiary care facility evaluating agreement (≤10% difference) between simultaneously measured IABP and NIBP...
January 12, 2024: Journal of Intensive Care Medicine
https://read.qxmd.com/read/38161619/comparison-of-cardiac-indices-using-two-different-concentrations-of-topical-adrenaline-during-endoscopic-transsphenoidal-pituitary-surgery-a-prospective-randomized-observational-study
#33
JOURNAL ARTICLE
Archana Gautam, Rudrashish Haldar, Shashi Srivastava, Devendra Gupta, Awadhesh Kumar Jaiswal, Prabhaker Mishra
Introduction  Adrenaline-soaked wicks are often employed to decongest nasal mucosa during transsphenoidal pituitary surgeries to ensure proper hemostasis and visibility of the operating field. Considerable debate exists regarding the optimum concentration of adrenaline that strikes a balance between hemostasis as well as the hemodynamic side effects of adrenaline. This study assessed cardiac indices like cardiac output and cardiac index using a FloTrac Vigileo cardiac output monitor to compare two different concentrations of adrenaline used for topical instillation...
December 2023: Asian Journal of Neurosurgery
https://read.qxmd.com/read/38155988/oscillometric-measurement-of-the-ankle-brachial-index-and-the-estimated-carotid-femoral-pulse-wave-velocity-improves-the-sensitivity-of-an-automated-device-in-screening-peripheral-artery-disease
#34
JOURNAL ARTICLE
Krisztina Fendrik, Katalin Biró, Dóra Endrei, Katalin Koltai, Barbara Sándor, Kálmán Tóth, Gábor Késmárky
BACKGROUND AND AIMS: To overcome the time and personnel constraints of the Doppler method, automated, four-limb blood pressure monitors were recently developed. Their additional functions, such as measuring the estimated carotid-femoral pulse wave velocity (ecfPWV), have been, thus far, less studied. We aimed to compare the sensitivity and specificity of different ankle-brachial index (ABI), toe-brachial index (TBI), and ecfPWV measurement methodologies to evaluate their contribution to peripheral artery disease (PAD) screening...
2023: Frontiers in Cardiovascular Medicine
https://read.qxmd.com/read/38155033/naphazoline-intoxication-managed-with-minimally-invasive-cardiac-output-monitoring
#35
Takatoshi Oishi, Masahiro Kashiura, Hideto Yasuda, Yuki Kishihara, Keiichiro Tominaga, Hiroyuki Tamura, Takashi Moriya
Naphazoline, a nonspecific alpha-adrenoceptor stimulant, is a potent vasoconstrictor used in nasal sprays, eye drops, and over-the-counter antiseptics. Naphazoline intoxication increases afterload by constricting the peripheral arteries, which can lead to complications including multiple organ failure. Although phentolamine, a nonselective alpha-adrenoceptor antagonist, and nicardipine, a calcium channel blocker, are used for the treatment of naphazoline intoxication, no established administration protocols currently exist...
December 24, 2023: American Journal of Emergency Medicine
https://read.qxmd.com/read/38131767/development-of-a-direct-non-puncture-device-for-measuring-portal-venous-pressure-during-liver-transplantation-a-swine-model
#36
JOURNAL ARTICLE
Kung-Chen Ho, Tun-Sung Huang, Jiunn-Chang Lin, Huihua Kenny Chiang
Portal hypertension-related complications pose a significant risk for liver failure post-transplantation. Thus, accurate monitoring of intraoperative portal venous pressure (PVP) is crucial. However, current PVP monitoring techniques requiring direct percutaneous puncture carry the risk of graft damage. In this study, we present an innovative non-puncture PVP monitoring device (PVPMD) using a 3D-printed prototype. PVPMD design is inspired by the sphygmomanometer principle, and strategically encompasses the portal vein and enables precise PVP measurement through blood flow ultrasonography after temporary occlusion...
November 30, 2023: Biosensors
https://read.qxmd.com/read/38114389/haemodynamic-effects-of-labetalol-in-isoflurane-anaesthetized-dogs-that-received-dexmedetomidine-a-randomized-clinical-trial
#37
JOURNAL ARTICLE
Ignacio Sández, Manuel Martín-Flores, Diego A Portela, Felipe Márquez-Grados, Manuel Ignacio Monge-García
OBJECTIVE: To test whether labetalol improved cardiovascular function in anaesthetized dogs injected with dexmedetomidine. STUDY DESIGN: Prospective, randomized, blinded, clinical trial. ANIMALS: A group of 20 healthy client-owned dogs undergoing ovariohysterectomy. METHODS: Each dog received dexmedetomidine (5 μg kg-1 ) and methadone (0.2 mg kg-1 ) intramuscularly. General anaesthesia was induced with propofol and maintained with isoflurane in oxygen...
October 23, 2023: Veterinary Anaesthesia and Analgesia
https://read.qxmd.com/read/38112879/impact-of-clinicians-behavior-an-educational-intervention-with-mandated-blood-pressure-and-the-hypotension-prediction-index-software-on-intraoperative-hypotension-a-mixed-methods-study
#38
JOURNAL ARTICLE
Ilonka N de Keijzer, Jaap Jan Vos, David Yates, Caroline Reynolds, Sally Moore, Rebecca J Lawton, Thomas W L Scheeren, Simon J Davies
PURPOSE: Intraoperative hypotension (IOH) is associated with adverse outcomes. We therefore explored beliefs regarding IOH and barriers to its treatment. Secondarily, we assessed if an educational intervention and mandated mean arterial pressure (MAP), or the implementation of the Hypotension Prediction Index-software (HPI) were associated with a reduction in IOH. METHODS: Structured interviews (n = 27) and questionnaires (n = 84) were conducted to explore clinicians' beliefs and barriers to IOH treatment, in addition to usefulness of HPI questionnaires (n = 14)...
December 19, 2023: Journal of Clinical Monitoring and Computing
https://read.qxmd.com/read/38105436/effectiveness-of-the-preventive-administration-of-vasoactive-amines-in-counterbalancing-significant-patient-blood-pressure-drops-following-nimodipine-administration-during-mechanical-thrombectomy-procedures
#39
JOURNAL ARTICLE
Gianmarco Bernava, Rosa Tesoro, José Boto, Myriam Challita, Andrea Rosi, Jeremy Hofmeister, Hasan Yilmaz, Emmanuel Carrera, Olivier Brina, Philippe Reymond, Michel Muster, Zsolt Kulcsar, Karl-Olof Lovblad, Paolo Machi
BACKGROUND: Focal vasospasm (FV) of the occluded vessel can occur during the endovascular treatment of acute ischemic stroke (AIS). Nimodipine is commonly used to treat vasospasm and can play a role in distinguishing it from artery narrowing due to iatrogenic dissection or residual clot. However, nimodipine administration can result in arterial hypotension and subsequent enlargement of the ischemic core. OBJECTIVE: To assess the efficacy of preventive and continuous vasoactive amine infusion to counterbalance nimodipine-induced hypotension...
December 17, 2023: Interventional Neuroradiology
https://read.qxmd.com/read/38083115/generalization-error-of-a-regression-model-for-non-invasive-blood-pressure-monitoring-using-a-single-photoplethysmography-ppg-signal
#40
JOURNAL ARTICLE
Marek Zylinski, Edoardo Occhipinti, Danilo Mandic
Photoplethysmography (PPG) sensors integrated in wearable devices offer the potential to monitor arterial blood pressure (ABP) in patients. Such cuffless, non-invasive, and continuous solution is suitable for remote and ambulatory monitoring. A machine learning model based on PPG signal can be used to detect hypertension, estimate beat-by-beat ABP values, and even reconstruct the shape of the ABP. Overall, models presented in literature have shown good performance, but there is a gap between research and potential real-world use cases...
July 2023: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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