scholarly journals Correction for respiration artifact in pulmonary blood pressure signals of ventilated patients

1996 ◽  
Vol 12 (5) ◽  
pp. 397-403 ◽  
Author(s):  
Sebastiaan A. A. P. Hocksel ◽  
Johannes A. Blom ◽  
Jos R. C. Jansen ◽  
Jan J. Schreuder
Keyword(s):  
Blood Pressure ◽  
Ventilated Patients

A243 SYSTOLIC BLOOD PRESSURE VARIATION IN POSTOPERATIVE VENTILATED PATIENTS

1990 ◽  
Vol 73 (3A) ◽  
pp. NA-NA ◽  
Author(s):  
M. Vrillon ◽  
F. Le Bret ◽  
J. Vrints ◽  
E. Barre ◽  
P. Coriat ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Systolic Blood Pressure ◽  
Pressure Variation ◽  
Blood Pressure Variation ◽  
Ventilated Patients

Breathing cardiovascular variability and baroreflex in mechanically ventilated patients

2008 ◽  
Vol 295 (6) ◽  
pp. R1934-R1940 ◽  
Author(s):  
Andry Van de Louw ◽  
Claire Médigue ◽  
Yves Papelier ◽  
François Cottin
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Phase Difference ◽  
Airway Pressure ◽  
Baroreflex Sensitivity ◽  
Positive Pressure ◽  
Signal Phase ◽  
Mechanically Ventilated ◽  
Mechanically Ventilated Patients ◽  
Ventilated Patients

Heart rate and blood pressure variations during spontaneous ventilation are related to the negative airway pressure during inspiration. Inspiratory airway pressure is positive during mechanical ventilation, suggesting that reversal of the normal baroreflex-mediated pattern of variability may occur. We investigated heart rate and blood pressure variability and baroreflex sensitivity in 17 mechanically ventilated patients. ECG (RR intervals), invasive systolic blood pressure (SBP), and respiratory flow signals were recorded. High-frequency (HF) amplitude of RR and SBP time series and HF phase differences between RR, SBP, and ventilatory signals were continuously computed by Complex DeModulation (CDM). Cross-spectral analysis was used to assess the coherence and the gain functions between RR and SBP, yielding baroreflex sensitivity indices. The HF phase difference between SBP and ventilatory signals was nearly constant in all patients with inversion of SBP variability during the ventilator cycle compared with cycling with negative inspiratory pressure to replicate spontaneous breathing. In 12 patients ( group 1), the phase difference between RR and ventilatory signals changed over time and the HF-RR amplitude varied. In the remaining five patients ( group 2), RR-ventilatory signal phase and HF-RR amplitude showed little change; however, only one of these patients exhibited a RR-ventilatory signal phase difference mimicking the normal pattern of respiratory sinus arrhythmia. Spectral coherence between RR and SBP was lower in the group with phase difference changes. Positive pressure ventilation exerts mainly a mechanical effect on SBP, whereas its influence on HR variability seems more complex, suggesting a role for neural influences.

scholarly journals Hemodynamic and Metabolic Tolerance of Acetate-Free Biofiltration in Mechanically Ventilated Critically Ill Patients: A Real-Life Study

2021 ◽  
Vol 10 (24) ◽  
pp. 5729
Author(s):  
Anna Gouin ◽  
Pierre Tailpied ◽  
Olivier Marion ◽  
Laurence Lavayssiere ◽  
Chloé Medrano ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Critically Ill ◽  
Critically Ill Patients ◽  
Dialysis Session ◽  
Co2 Removal ◽  
Intradialytic Hypotension ◽  
Vasoactive Agent ◽  
Mechanically Ventilated ◽  
Mechanically Ventilated Patients ◽  
Ventilated Patients

Intradialytic hypotension can lead to superimposed organ hypoperfusion and ultimately worsens long-term kidney outcomes in critically ill patients requiring kidney replacement therapy. Acetate-free biofiltration (AFB), an alternative technique to bicarbonate-based hemodialysis (B-IHD) that does not require dialysate acidification, may improve hemodynamic and metabolic tolerance of dialysis. In this study, we included 49 mechanically ventilated patients requiring 4 h dialysis (AFB sessions n = 66; B-IHD sessions n = 62). Whereas more AFB sessions were performed in patients at risk of hemodynamic intolerance, episodes of intradialytic hypotension were significantly less frequent during AFB compared to B-IHD, whatever the classification used (decrease in mean blood pressure ≥ 10 mmHg; systolic blood pressure decrease >20 mmHg or absolute value below 95 mmHg) and after adjustment on the use of vasoactive agent. Diastolic blood pressure readily increased throughout the dialysis session. The use of a bicarbonate zero dialysate allowed the removal of 113 ± 25 mL/min of CO2 by the hemofilter. After bicarbonate reinjection, the global CO2 load induced by AFB was +25 ± 6 compared to +80 ± 12 mL/min with B-IHD (p = 0.0002). Thus, notwithstanding the non-controlled design of this study, hemodynamic tolerance of AFB appears superior to B-IHD in mechanically ventilated patients. Its use as a platform for CO2 removal also warrants further research.

Spontaneous blood pressure oscillations in mechanically ventilated patients with sepsis

2016 ◽  
Vol 21 (2) ◽  
pp. 75-79 ◽  
Author(s):  
Ronan M.G. Berg ◽  
Ronni R. Plovsing ◽  
Anders M. Greve ◽  
Claus B. Christiansen ◽  
Linea N. Toksvang ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Pressure Oscillations ◽  
Mechanically Ventilated ◽  
Mechanically Ventilated Patients ◽  
Ventilated Patients

Evaluation of two methods of teaching blood pressure measurement

1988 ◽  
Vol 52 (9) ◽  
pp. 519-521
Author(s):  
NK Nordstrom ◽  
S Longenecker ◽  
HL Whitacre ◽  
FM Beck
Keyword(s):  
Blood Pressure ◽  
Pressure Measurement ◽  
Blood Pressure Measurement

Long- and short-term blood pressure andRR-interval variability and psychosomatic distress in chronic fatigue syndrome: authors’ reply 1

1999 ◽  
Vol 97 (3) ◽  
pp. 319 ◽  
Author(s):  
D.A. DUPREZ ◽  
M.L. DE BUYZERE ◽  
B. DRIEGHE ◽  
F. VANHAVERBEKE ◽  
Y. TAES ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Chronic Fatigue Syndrome ◽  
Chronic Fatigue ◽  
Short Term ◽  
Fatigue Syndrome
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