scholarly journals Perioperative sequential monitoring of hemodynamic parameters in patients with pheochromocytoma using the Non-Invasive Cardiac System (NICaS)

2014 ◽  
Vol 61 (6) ◽  
pp. 571-575 ◽  
Author(s):  
Yayoi Matsuda ◽  
Hisaya Kawate ◽  
Shingo Shimada ◽  
Chitose Matsuzaki ◽  
Hiromi Nagata ◽  
...  
Keyword(s):  
Hemodynamic Parameters ◽  
Non Invasive ◽  
Cardiac System

Non-Invasive Monitoring of Hemodynamic Parameters during Hemodialysis

1995 ◽  
Vol 18 (9) ◽  
pp. 499-503 ◽  
Author(s):  
F. Pizzarelli ◽  
P. Dattolo ◽  
M. Piacenti ◽  
M.A. Morales ◽  
T. Cerrai ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Cardiac Output ◽  
Blood Volume ◽  
Impedance Cardiography ◽  
Hemodynamic Parameters ◽  
Non Invasive ◽  
Transthoracic Impedance ◽  
Cardiac Output Index ◽  
On Line ◽  
Two Parameters

We studied in 13 hemodialysis patients intradialytic variations of blood volume (BV) and cardiac output, by means of non-invasive methods. We found a weak correlation, r 0.2 or less, between BV variations and intradialysis blood pressure variations. The sensitivity of the former in describing the variations of the latter was only 32%. During the 30 min preceeding the hypotensive crisis the percent BV variations did not show any predictive trend. On the contrary, refilling increased as blood pressure dropped and a weak inverse relation (r -0.35) was found between these two parameters. Unstable patients had predialytic blood volume values significantly lower than stable ones and comparable to healthy subjects. On the contrary, the correlation between percent variations of cardiac output index and MAP was 0.68 with a sensitivity and specificity of 90% and 59%, respectively. Unfortunately these promising results were obtained only with an estimate of cardiac output obtained by echocardiography and not by transthoracic impedance cardiography, which is much more feasible than the former as on-line monitoring of cardiac output. On-line monitoring of hemodynamic parameters is an appealing but still unsolved task.

Hemodynamic Parameters Non-Invasive Hydro-Cuff Monitoring System

2019 ◽  
Author(s):  
Marina V. Markulyova ◽  
Mikhail S. Gerashchenko ◽  
Dmitry V. Papshev ◽  
Sergei I. Gerashchenko ◽  
Leonid Y. Krivonogov
Keyword(s):  
Monitoring System ◽  
Hemodynamic Parameters ◽  
Non Invasive

scholarly journals Standardized Protocol for Hemodialysis Vascular Access Assessment: The Role of Ultrasound and ColorDoppler

2018 ◽  
Vol 45 (1-3) ◽  
pp. 260-269 ◽  
Author(s):  
Federico Nalesso ◽  
Francesco Garzotto ◽  
Ilaria Petrucci ◽  
Sara Samoni ◽  
Grazia Maria Virzì ◽  
...  
Keyword(s):  
Early Diagnosis ◽  
Vascular Access ◽  
Hemodynamic Parameters ◽  
Non Invasive ◽  
Standardized Protocol ◽  
Hemodialysis Vascular Access ◽  
Simple Step ◽  
Artery Flow

Introduction: Ultrasound and colorDoppler technique, which is relatively inexpensive, rapid, non-invasive and repeatable is a powerful tool used for early diagnosis of vascular access (VA) complications in hemodialysis patients. To date a standard and widely comprehensible echocolorDoppler (ECD) protocol is not available. Materials and Methods: A simple step-by-step protocol based on anatomical and hemodynamic parameters of VA has been developed during a 3-years VA ECD follow-up. It consists of an ECD study scheme. The algorithm created involves the calculation of brachial artery flow, description of artero-venous and/or graft-vascular anastomosis and efferent vessel and/or graft. Results: The algorithm allows to formulate a medical report that takes into account both anatomic and hemodynamic parameters of the VA. Reduction of complications and the prevention of chronic complications as well as the early detection of acute problems were achieved. Discussion and Conclusion: The creation of a step-by-step protocol may simplify the multidisciplinary management of VA, its monitoring and the early diagnosis of its complications.

Monitoring the Effect of Large Volume Paracenthesis on Systemic Hemodynamics Parameters Using the Non-Invasive Cardiac System a Pilot Study

2016 ◽  
Vol 64 (2) ◽  
pp. S668-S669
Author(s):  
T. Berdichevski ◽  
E. Weizman ◽  
M. Arad ◽  
Y. Sharabi ◽  
R. Hemi ◽  
...  
Keyword(s):  
Pilot Study ◽  
Large Volume ◽  
Systemic Hemodynamics ◽  
Non Invasive ◽  
System A ◽  
Cardiac System

scholarly journals Diagnostics and treatment of hemodynamic disorders in cancer patients: current trends and own experience

2020 ◽  
Vol 55 (1) ◽  
pp. 32-34
Author(s):  
A. A. Arynov ◽  
N. Z. Shapatova ◽  
I. M. Smagina
Keyword(s):  
Intensive Care ◽  
Cancer Patients ◽  
Perioperative Period ◽  
Clinical Diagnostics ◽  
Invasive Monitoring ◽  
Hemodynamic Parameters ◽  
Monitoring Methods ◽  
Non Invasive ◽  
Current Trends ◽  
Combination Of Methods

Relevance: Hemodynamic disorders occupy a central position among pathological syndromes in patients receiving intensive care. Still, their diagnostics and treatment are sometimes delayed, and hemodynamic parameters and types of blood circulation are misinterpreted. This adds to the severity of such disorders and increases mortality. The purpose of the study was to analyze the diagnostics and treatment of hemodynamic disorders in cancer patients. Results: The applied methods of clinical diagnostics and non-invasive monitoring of hemodynamic parameters correlated well with invasive monitoring methods and have proven useful in the everyday practice of intensive care. Conclusion: A combination of methods of clinical diagnosis of hemodynamic disorders and with modern non-invasive methods of measuring central hemodynamics parameters allows for earlier and more accurate diagnostics and correction of hemodynamic disorders in the perioperative period in cancer patients.

scholarly journals BENEFITS OF VOLUMETRIC COMPRESSION OSCILLOMETRY FOR THE ASSESSMENT OF HEMODYNAMIC PARAMETERS IN PATIENTS WITH ARTERIAL HYPERTENSION

2013 ◽  
Vol 12 (2) ◽  
pp. 10-17
Author(s):  
L. V. Shpak ◽  
E. S. Galoshina
Keyword(s):  
Arterial Hypertension ◽  
Vascular Wall ◽  
Healthy People ◽  
Control Group ◽  
Hemodynamic Parameters ◽  
Simultaneous Reduction ◽  
Non Invasive ◽  
Wide Range ◽  
The Status ◽  
Stage 1

Aim. To compare the parameters of central and peripheral hemodynamics in healthy people and patients with Stage 1–3 arterial hypertension (AH).Material and methods. In total, 105 individuals were examined. The control group (CG) included 50 healthy people (25 women and 25 men; mean age 27,8±0,8 years) with optimal and normal levels of blood pressure (BP) (mean levels 118,5±1,6/71,82±1,2 mm Hg). The main group (MG) included 55 patients (41 women and 14 men; mean age 62,9±1,6 years) with systolo-diastolic AH: Stage 1 in 25 (mean BP levels 146,1±0,9/84,9±1,6 mm Hg), Stage 2 in 20 (164,4±1,8/95±2,1 mm Hg), and Stage 3 in 10 (189,6±10,6/92,6±6,3 mm Hg). The method of volumetric compression oscillometry (VCO) was used to assess a wide range of myocardial and hemodynamic parameters.Results. In AH patients, all AH phenotypes, vascular and cardiac parameters were increasing, with a simultaneous reduction in vascular wall distensibility, in parallel with the AH progression from Stage 1 to Stage 3. This indicated an increase in myocardial contractility, tone strain of arterial wall, and peripheral vascular resistance. From Stage 1 to Stage 3, the prevalence of hyper- and eukinetic cardiac hemodynamic types was decreasing, while the prevalence of mixed and hypokinetic types was increasing. The mixed hemodynamic type (a combination of hyper-, eu-, and particularly hypokinetic type characteristics) was considered as an incompletely developed disadaptive hypokinetic type.Conclusion. The VCO method is an effective, non-invasive way to simultaneously assess the status of multiple hemodynamic parameters in both healthy people and AH patients. A specific benefit of this method is the registration of lateral BP levels and identification of mixed (additional) hemodynamic type. 

scholarly journals PTT-based Contact-less Blood Pressure Measurement using an RGB-Camera

2021 ◽  
Vol 7 (2) ◽  
pp. 375-378
Author(s):  
Carolin Wuerich ◽  
Robin Rademacher ◽  
Christian Wiede ◽  
Anton Grabmaier
Keyword(s):  
Blood Pressure ◽  
Diastolic Blood Pressure ◽  
Pressure Measurement ◽  
Blood Pressure Measurement ◽  
Systolic Pressure ◽  
Pulse Transit Time ◽  
Invasive Blood Pressure ◽  
Non Invasive ◽  
Individual Calibration ◽  
Cardiac System

Abstract Commonly used blood pressure measurement devices have noticeable limitations in accuracy, measuring time, comfort or safety. To overcome these limitations, we developed and tested a surrogate-based, non-invasive blood pressure measurement method using an RGB-camera. Our proposed method employs the relation between the pulse transit time (PTT) and blood pressure. Two remote photoplethysmography (rPPG) signals at different distances from the heart are extracted to calculate the temporal delay of the pulse wave. In order to establish the correlation between the PTT values and the blood pressure, a regression model is trained and evaluated. Tests were performed with five subjects, where each subject was recorded fifteen times for 30 seconds. Since the physiological parameters of the cardiac system are different for each person, an individual calibration is required to obtain the systolic and diastolic blood pressure from the PTT values. The calibration results are limited by the small number of samples and the accuracy of the reference system. However, our results show a strong correlation between the PTT values and the blood pressure and we obtained a mean error of 0.18 +/- 5.50 mmHg for the diastolic blood pressure and 0.01 +/- 7.71 mmHg for the systolic pressure, respectively.

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