Intracardiac Pressure - Volume Diagrams and Their Links with Thermodynamics [Retrospectroscope]

IEEE Pulse ◽  
2014 ◽  
Vol 5 (6) ◽  
pp. 48-56 ◽  
Author(s):  
Max E. Valentinuzzi ◽  
Maria P. Bonomini ◽  
Pedro D. Arini
Keyword(s):  
Intracardiac Pressure

scholarly journals Bioimpedance Vector Analysis for Heart Failure: Should We Put It on the Agenda?

2021 ◽  
Vol 8 ◽  
Author(s):  
Bo Liang ◽  
Rui Li ◽  
Jia-Yue Bai ◽  
Ning Gu
Keyword(s):  
Heart Failure ◽  
Cardiac Output ◽  
Clinical Diagnosis ◽  
Acute Decompensated Heart Failure ◽  
Decompensated Heart Failure ◽  
Clinical Syndrome ◽  
Vector Analysis ◽  
Diagnosis And Management ◽  
Volume Assessment ◽  
Intracardiac Pressure

Heart failure is a clinical syndrome, resulting in increased intracardiac pressure and/or decreased cardiac output under rest or stress. In acute decompensated heart failure, volume assessment is essential for clinical diagnosis and management. More and more evidence shows the advantages of bioimpedance vector analysis in this issue. Here, we critically present a brief review of bioimpedance vector analysis in the prediction and management of heart failure to give a reference to clinical physicians and guideline makers.

Abstract 15938: B-type Natriuretic Peptide Levels Do Not Predict the Need for Mechanical Ventilation in Hospitalized Patients With COVID-19

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Daniel perry ◽  
Tariq U Azam ◽  
Husam Shadid ◽  
Michael Pan ◽  
Hannah Berlin ◽  
...  
Keyword(s):  
Heart Failure ◽  
Mechanical Ventilation ◽  
Respiratory Failure ◽  
Natriuretic Peptide ◽  
Chart Review ◽  
Prospective Observational Study ◽  
Clinical Laboratory ◽  
Multivariable Analysis ◽  
The Mean ◽  
Intracardiac Pressure

Introduction: B-type natriuretic peptide (BNP) is widely used as a biomarker of heart failure and typically rises in response to increased intracardiac pressure. BNP levels have been measured in patients with coronavirus disease 2019 (COVID-19) to assess the cardiovascular contribution to respiratory failure and guide diuresis. Whether BNP levels do predict the need for mechanical ventilation (MV) is however unknown. Methods: The Michigan Medicine Covid-19 Cohort (M 2 C 2 ) is an ongoing prospective observational study in which detailed clinical, laboratory and outcomes data were collected from chart review of consecutive adult patients hospitalized for COVID-19. Patients who were positive for SARS-CoV-2 infection but without symptoms of COVID-19 were not included in this cohort. We identified 495 patients admitted between March 1 st and May 1 st for COVID-19, of whom 290 (58.6%) had BNP levels measured during their hospitalization. We examined the association between BNP and the need for MV during their hospitalization. Results: Among the 290 patients evaluated, the mean age was 62 (SD 15), 169 (58.3%) were male, 135 (46.6%) were blacks, and 61 (21.0%) had pre-existing heart failure. The median BNP level was 50 pg/ml, and 104 (35.9%) of patients had a BNP level > 100 pg/ml. A total of 130 (44.8%) required MV during their hospitalization. The median BNP level in patients who required MV was 63 pg/ml (IQR 25-171), compared to 46 pg /ml (IQR 17-187) in patients who did not, P=0.23. In multivariable analysis adjusting for age, gender, race, pre-existing heart failure, and serum creatinine on admission, BNP>100 pg/ml was not associated with the need for MV. Conclusions: In patients hospitalized for COVID-19, BNP levels were not associated with the need for MV, suggesting that the cardiovascular contribution to respiratory failure in these patients is likely minor compared to the inflammatory response or direct impact of the virus.

Intravascular and Intracardiac Pressure Recording in Man: Electrical Apparatus Compared with the Hamilton Manometer.

1947 ◽  
Vol 64 (2) ◽  
pp. 241-244 ◽  
Author(s):  
H. L. Motley ◽  
A. Cournand ◽  
L. Werko ◽  
D. Dresdale ◽  
A. Himmelstein ◽  
...  
Keyword(s):  
Pressure Recording ◽  
Intracardiac Pressure ◽  
Electrical Apparatus

Measurement of intracardiac pressure through a valve-tipped catheter

1975 ◽  
Vol 42 (2) ◽  
pp. 236-239 ◽  
Author(s):  
Jan Ekstedt ◽  
Bo Nyström ◽  
Rune Hugosson ◽  
Seth Högström
Keyword(s):  
Liquid Flow ◽  
Optimal Placement ◽  
Pressure Waves ◽  
Content Type ◽  
Cardiac Catheter ◽  
Pressure Recording ◽  
Constant Rate ◽  
Flow Through ◽  
Intracardiac Pressure ◽  
Fine Print

✓ Intracardiac pressure recording is a simple and effective way of obtaining optimal placement of the cardiac catheter during shunting procedures. We have also found this method applicable when using a catheter with a slit in its tip. Pressure waves can be accurately recorded by means of a constant rate liquid flow through the catheter.

scholarly journals Influences of pressure surrounding the heart and intracardiac pressure on the diastolic coronary pressure-flow relation in excised canine heart.

1988 ◽  
Vol 63 (4) ◽  
pp. 788-797 ◽  
Author(s):  
S Satoh ◽  
J Watanabe ◽  
M Keitoku ◽  
N Itoh ◽  
Y Maruyama ◽  
...  
Keyword(s):  
Canine Heart ◽  
Pressure Flow ◽  
Coronary Pressure ◽  
Intracardiac Pressure
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