Skip to main content
Top
Published in: Critical Care 4/2011

Open Access 01-08-2011 | Research

Impact of norepinephrine on the relationship between pleth variability index and pulse pressure variations in ICU adult patients

Authors: Matthieu Biais, Vincent Cottenceau, Laurent Petit, Françoise Masson, Jean-François Cochard, François Sztark

Published in: Critical Care | Issue 4/2011

Login to get access

Abstract

Introduction

Pleth Variability Index (PVI) is an automated and continuous calculation of respiratory variations in the perfusion index. PVI correlates well with respiratory variations in pulse pressure (ΔPP) and is able to predict fluid responsiveness in the operating room. ICU patients may receive vasopressive drugs, which modify vascular tone and could affect PVI assessment. We hypothesized that the correlation between PVI and ΔPP and the ability of PVI to identify patients with ΔPP > 13% is dependent on norepinephrine (NE) use.

Methods

67 consecutive mechanically ventilated patients in the ICU were prospectively included. Three were excluded. The administration and dosage of NE, heart rate, mean arterial pressure, PVI and ΔPP were measured simultaneously.

Results

In all patients, the correlation between PVI and ΔPP was weak (r2 = 0.21; p = 0.001). 23 patients exhibited a ΔPP > 13%. A PVI > 11% was able to identify patients with a ΔPP > 13% with a sensitivity of 70% (95% confidence interval: 47%-87%) and a specificity of 71% (95% confidence interval: 54%-84%). The area under the curve was 0.80 ± 0.06. 35 patients (53%) received norepinephrine (NE(+)). In NE(+) patients, PVI and ΔPP were not correlated (r2 = 0.04, p > 0.05) and a PVI > 10% was able to identify patients with a ΔPP > 13% with a sensitivity of 58% (95% confidence interval: 28%-85%) and a specificity of 61% (95% confidence interval:39%-80%). The area under the ROC (receiver operating characteristics) curve was 0.69 ± 0.01. In contrast, NE(-) patients exhibited a correlation between PVI and ΔPP (r2 = 0.52; p < 0.001) and a PVI > 10% was able to identify patients with a ΔPP > 13% with a sensitivity of 100% (95% confidence interval: 71%-100%) and a specificity of 72% (95% confidence interval: 49%-90%). The area under the ROC curve was 0.93 ± 0.06 for NE(-) patients and was significantly higher than the area under the ROC curve for NE(+) patients (p = 0.02).

Conclusions

Our results suggest that in mechanically ventilated adult patients, NE alters the correlation between PVI and ΔPP and the ability of PVI to predict ΔPP > 13% in ICU patients.
Appendix
Available only for authorised users
Literature
1.
go back to reference Michard F: Changes in arterial pressure during mechanical ventilation. Anesthesiology 2005, 103: 419-428. 10.1097/00000542-200508000-00026PubMedCrossRef Michard F: Changes in arterial pressure during mechanical ventilation. Anesthesiology 2005, 103: 419-428. 10.1097/00000542-200508000-00026PubMedCrossRef
2.
go back to reference Michard F, Teboul JL: Predicting fluid responsiveness in ICU patients: a critical analysis of the evidence. Chest 2002, 121: 2000-2008. 10.1378/chest.121.6.2000PubMedCrossRef Michard F, Teboul JL: Predicting fluid responsiveness in ICU patients: a critical analysis of the evidence. Chest 2002, 121: 2000-2008. 10.1378/chest.121.6.2000PubMedCrossRef
3.
go back to reference Osman D, Ridel C, Ray P, Monnet X, Anguel N, Richard C, Teboul JL: Cardiac filling pressures are not appropriate to predict hemodynamic response to volume challenge. Crit Care Med 2007, 35: 64-68. 10.1097/01.CCM.0000249851.94101.4FPubMedCrossRef Osman D, Ridel C, Ray P, Monnet X, Anguel N, Richard C, Teboul JL: Cardiac filling pressures are not appropriate to predict hemodynamic response to volume challenge. Crit Care Med 2007, 35: 64-68. 10.1097/01.CCM.0000249851.94101.4FPubMedCrossRef
4.
go back to reference Biais M, Nouette-Gaulain K, Cottenceau V, Revel P, Sztark F: Uncalibrated pulse contour-derived stroke volume variation predicts fluid responsiveness in mechanically ventilated patients undergoing liver transplantation. Br J Anaesth 2008, 101: 761-768. 10.1093/bja/aen277PubMedCrossRef Biais M, Nouette-Gaulain K, Cottenceau V, Revel P, Sztark F: Uncalibrated pulse contour-derived stroke volume variation predicts fluid responsiveness in mechanically ventilated patients undergoing liver transplantation. Br J Anaesth 2008, 101: 761-768. 10.1093/bja/aen277PubMedCrossRef
5.
go back to reference Feissel M, Michard F, Faller JP, Teboul JL: The respiratory variation in inferior vena cava diameter as a guide to fluid therapy. Intensive Care Med 2004, 30: 1834-1837.PubMedCrossRef Feissel M, Michard F, Faller JP, Teboul JL: The respiratory variation in inferior vena cava diameter as a guide to fluid therapy. Intensive Care Med 2004, 30: 1834-1837.PubMedCrossRef
6.
go back to reference Feissel M, Michard F, Mangin I, Ruyer O, Faller JP, Teboul JL: Respiratory changes in aortic blood velocity as an indicator of fluid responsiveness in ventilated patients with septic shock. Chest 2001, 119: 867-873. 10.1378/chest.119.3.867PubMedCrossRef Feissel M, Michard F, Mangin I, Ruyer O, Faller JP, Teboul JL: Respiratory changes in aortic blood velocity as an indicator of fluid responsiveness in ventilated patients with septic shock. Chest 2001, 119: 867-873. 10.1378/chest.119.3.867PubMedCrossRef
7.
go back to reference Michard F, Boussat S, Chemla D, Anguel N, Mercat A, Lecarpentier Y, Richard C, Pinsky MR, Teboul JL: Relation between respiratory changes in arterial pulse pressure and fluid responsiveness in septic patients with acute circulatory failure. Am J Respir Crit Care Med 2000, 162: 134-138.PubMedCrossRef Michard F, Boussat S, Chemla D, Anguel N, Mercat A, Lecarpentier Y, Richard C, Pinsky MR, Teboul JL: Relation between respiratory changes in arterial pulse pressure and fluid responsiveness in septic patients with acute circulatory failure. Am J Respir Crit Care Med 2000, 162: 134-138.PubMedCrossRef
8.
go back to reference Tavernier B, Makhotine O, Lebuffe G, Dupont J, Scherpereel P: Systolic pressure variation as a guide to fluid therapy in patients with sepsis-induced hypotension. Anesthesiology 1998, 89: 1313-1321. 10.1097/00000542-199812000-00007PubMedCrossRef Tavernier B, Makhotine O, Lebuffe G, Dupont J, Scherpereel P: Systolic pressure variation as a guide to fluid therapy in patients with sepsis-induced hypotension. Anesthesiology 1998, 89: 1313-1321. 10.1097/00000542-199812000-00007PubMedCrossRef
9.
go back to reference Cannesson M, Desebbe O, Lehot JJ: Fluid responsiveness assessment using the pulse oxymeter waveform: not yet ready for prime time. Anesth Analg 2007, 104: 1598-1599. 10.1213/01.ane.0000260463.40639.7fPubMedCrossRef Cannesson M, Desebbe O, Lehot JJ: Fluid responsiveness assessment using the pulse oxymeter waveform: not yet ready for prime time. Anesth Analg 2007, 104: 1598-1599. 10.1213/01.ane.0000260463.40639.7fPubMedCrossRef
10.
go back to reference De Backer D, Heenen S, Piagnerelli M, Koch M, Vincent JL: Pulse pressure variations to predict fluid responsiveness: influence of tidal volume. Intensive Care Med 2005, 31: 517-523. 10.1007/s00134-005-2586-4PubMedCrossRef De Backer D, Heenen S, Piagnerelli M, Koch M, Vincent JL: Pulse pressure variations to predict fluid responsiveness: influence of tidal volume. Intensive Care Med 2005, 31: 517-523. 10.1007/s00134-005-2586-4PubMedCrossRef
11.
go back to reference De Backer D, Taccone FS, Holsten R, Ibrahimi F, Vincent JL: Influence of respiratory rate on stroke volume variation in mechanically ventilated patients. Anesthesiology 2009, 110: 1092-1097. 10.1097/ALN.0b013e31819db2a1PubMedCrossRef De Backer D, Taccone FS, Holsten R, Ibrahimi F, Vincent JL: Influence of respiratory rate on stroke volume variation in mechanically ventilated patients. Anesthesiology 2009, 110: 1092-1097. 10.1097/ALN.0b013e31819db2a1PubMedCrossRef
12.
go back to reference Mahjoub Y, Pila C, Friggeri A, Zogheib E, Lobjoie E, Tinturier F, Galy C, Slama M, Dupont H: Assessing fluid responsiveness in critically ill patients: False-positive pulse pressure variation is detected by Doppler echocardiographic evaluation of the right ventricle. Crit Care Med 2009, 37: 2570-2575. 10.1097/CCM.0b013e3181a380a3PubMedCrossRef Mahjoub Y, Pila C, Friggeri A, Zogheib E, Lobjoie E, Tinturier F, Galy C, Slama M, Dupont H: Assessing fluid responsiveness in critically ill patients: False-positive pulse pressure variation is detected by Doppler echocardiographic evaluation of the right ventricle. Crit Care Med 2009, 37: 2570-2575. 10.1097/CCM.0b013e3181a380a3PubMedCrossRef
13.
go back to reference Monnet X, Rienzo M, Osman D, Anguel N, Richard C, Pinsky MR, Teboul JL: Passive leg raising predicts fluid responsiveness in the critically ill. Crit Care Med 2006, 34: 1402-1407. 10.1097/01.CCM.0000215453.11735.06PubMedCrossRef Monnet X, Rienzo M, Osman D, Anguel N, Richard C, Pinsky MR, Teboul JL: Passive leg raising predicts fluid responsiveness in the critically ill. Crit Care Med 2006, 34: 1402-1407. 10.1097/01.CCM.0000215453.11735.06PubMedCrossRef
14.
go back to reference Wyler von Ballmoos M, Takala J, Roeck M, Porta F, Tueller D, Ganter CC, Schroder R, Bracht H, Baenziger B, Jakob SM: Pulse-pressure variation and hemodynamic response in patients with elevated pulmonary artery pressure: a clinical study. Crit Care 2010, 14: R111. 10.1186/cc9060PubMedPubMedCentralCrossRef Wyler von Ballmoos M, Takala J, Roeck M, Porta F, Tueller D, Ganter CC, Schroder R, Bracht H, Baenziger B, Jakob SM: Pulse-pressure variation and hemodynamic response in patients with elevated pulmonary artery pressure: a clinical study. Crit Care 2010, 14: R111. 10.1186/cc9060PubMedPubMedCentralCrossRef
15.
go back to reference Durand P, Chevret L, Essouri S, Haas V, Devictor D: Respiratory variations in aortic blood flow predict fluid responsiveness in ventilated children. Intensive Care Med 2008, 34: 888-894. 10.1007/s00134-008-1021-zPubMedCrossRef Durand P, Chevret L, Essouri S, Haas V, Devictor D: Respiratory variations in aortic blood flow predict fluid responsiveness in ventilated children. Intensive Care Med 2008, 34: 888-894. 10.1007/s00134-008-1021-zPubMedCrossRef
16.
go back to reference Cannesson M, Attof Y, Rosamel P, Desebbe O, Joseph P, Metton O, Bastien O, Lehot JJ: Respiratory variations in pulse oximetry plethysmographic waveform amplitude to predict fluid responsiveness in the operating room. Anesthesiology 2007, 106: 1105-1111. 10.1097/01.anes.0000267593.72744.20PubMedCrossRef Cannesson M, Attof Y, Rosamel P, Desebbe O, Joseph P, Metton O, Bastien O, Lehot JJ: Respiratory variations in pulse oximetry plethysmographic waveform amplitude to predict fluid responsiveness in the operating room. Anesthesiology 2007, 106: 1105-1111. 10.1097/01.anes.0000267593.72744.20PubMedCrossRef
17.
go back to reference Natalini G, Rosano A, Taranto M, Faggian B, Vittorielli E, Bernardini A: Arterial versus plethysmographic dynamic indices to test responsiveness for testing fluid administration in hypotensive patients: a clinical trial. Anesth Analg 2006, 103: 1478-1484. 10.1213/01.ane.0000246811.88524.75PubMedCrossRef Natalini G, Rosano A, Taranto M, Faggian B, Vittorielli E, Bernardini A: Arterial versus plethysmographic dynamic indices to test responsiveness for testing fluid administration in hypotensive patients: a clinical trial. Anesth Analg 2006, 103: 1478-1484. 10.1213/01.ane.0000246811.88524.75PubMedCrossRef
18.
go back to reference Delerme S, Castro S, Freund Y, Nazeyrollas P, Josse MO, Madonna-Py B, Rouff E, Riou B, Ray P: Relation between pulse oximetry plethysmographic waveform amplitude induced by passive leg raising and cardiac index in spontaneously breathing subjects. Am J Emerg Med 2010, 28: 505-510. 10.1016/j.ajem.2009.03.023PubMedCrossRef Delerme S, Castro S, Freund Y, Nazeyrollas P, Josse MO, Madonna-Py B, Rouff E, Riou B, Ray P: Relation between pulse oximetry plethysmographic waveform amplitude induced by passive leg raising and cardiac index in spontaneously breathing subjects. Am J Emerg Med 2010, 28: 505-510. 10.1016/j.ajem.2009.03.023PubMedCrossRef
19.
go back to reference Delerme S, Renault R, Le Manach Y, Lvovschi V, Bendahou M, Riou B, Ray P: Variations in pulse oximetry plethysmographic waveform amplitude induced by passive leg raising in spontaneously breathing volunteers. Am J Emerg Med 2007, 25: 637-642. 10.1016/j.ajem.2006.11.035PubMedCrossRef Delerme S, Renault R, Le Manach Y, Lvovschi V, Bendahou M, Riou B, Ray P: Variations in pulse oximetry plethysmographic waveform amplitude induced by passive leg raising in spontaneously breathing volunteers. Am J Emerg Med 2007, 25: 637-642. 10.1016/j.ajem.2006.11.035PubMedCrossRef
20.
go back to reference Feissel M, Teboul JL, Merlani P, Badie J, Faller JP, Bendjelid K: Plethysmographic dynamic indices predict fluid responsiveness in septic ventilated patients. Intensive Care Med 2007, 33: 993-999. 10.1007/s00134-007-0602-6PubMedCrossRef Feissel M, Teboul JL, Merlani P, Badie J, Faller JP, Bendjelid K: Plethysmographic dynamic indices predict fluid responsiveness in septic ventilated patients. Intensive Care Med 2007, 33: 993-999. 10.1007/s00134-007-0602-6PubMedCrossRef
21.
go back to reference Landsverk SA, Hoiseth LO, Kvandal P, Hisdal J, Skare O, Kirkeboen KA: Poor agreement between respiratory variations in pulse oximetry photoplethysmographic waveform amplitude and pulse pressure in intensive care unit patients. Anesthesiology 2008, 109: 849-855. 10.1097/ALN.0b013e3181895f9fPubMedCrossRef Landsverk SA, Hoiseth LO, Kvandal P, Hisdal J, Skare O, Kirkeboen KA: Poor agreement between respiratory variations in pulse oximetry photoplethysmographic waveform amplitude and pulse pressure in intensive care unit patients. Anesthesiology 2008, 109: 849-855. 10.1097/ALN.0b013e3181895f9fPubMedCrossRef
22.
go back to reference Cannesson M, Delannoy B, Morand A, Rosamel P, Attof Y, Bastien O, Lehot JJ: Does the Pleth variability index indicate the respiratory-induced variation in the plethysmogram and arterial pressure waveforms? Anesth Analg 2008, 106: 1189-1194. 10.1213/ane.0b013e318167ab1fPubMedCrossRef Cannesson M, Delannoy B, Morand A, Rosamel P, Attof Y, Bastien O, Lehot JJ: Does the Pleth variability index indicate the respiratory-induced variation in the plethysmogram and arterial pressure waveforms? Anesth Analg 2008, 106: 1189-1194. 10.1213/ane.0b013e318167ab1fPubMedCrossRef
23.
go back to reference Cannesson M, Desebbe O, Rosamel P, Delannoy B, Robin J, Bastien O, Lehot JJ: Pleth variability index to monitor the respiratory variations in the pulse oximeter plethysmographic waveform amplitude and predict fluid responsiveness in the operating theatre. Br J Anaesth 2008, 101: 200-206. 10.1093/bja/aen133PubMedCrossRef Cannesson M, Desebbe O, Rosamel P, Delannoy B, Robin J, Bastien O, Lehot JJ: Pleth variability index to monitor the respiratory variations in the pulse oximeter plethysmographic waveform amplitude and predict fluid responsiveness in the operating theatre. Br J Anaesth 2008, 101: 200-206. 10.1093/bja/aen133PubMedCrossRef
24.
go back to reference Desebbe O, Boucau C, Farhat F, Bastien O, Lehot JJ, Cannesson M: The ability of pleth variability index to predict the hemodynamic effects of positive end-expiratory pressure in mechanically ventilated patients under general anesthesia. Anesth Analg 2010, 110: 792-798. 10.1213/ANE.0b013e3181cd6d06PubMedCrossRef Desebbe O, Boucau C, Farhat F, Bastien O, Lehot JJ, Cannesson M: The ability of pleth variability index to predict the hemodynamic effects of positive end-expiratory pressure in mechanically ventilated patients under general anesthesia. Anesth Analg 2010, 110: 792-798. 10.1213/ANE.0b013e3181cd6d06PubMedCrossRef
25.
go back to reference Lima A, Bakker J: Noninvasive monitoring of peripheral perfusion. Intensive Care Med 2005, 31: 1316-1326. 10.1007/s00134-005-2790-2PubMedCrossRef Lima A, Bakker J: Noninvasive monitoring of peripheral perfusion. Intensive Care Med 2005, 31: 1316-1326. 10.1007/s00134-005-2790-2PubMedCrossRef
26.
go back to reference Lima AP, Beelen P, Bakker J: Use of a peripheral perfusion index derived from the pulse oximetry signal as a noninvasive indicator of perfusion. Crit Care Med 2002, 30: 1210-1213. 10.1097/00003246-200206000-00006PubMedCrossRef Lima AP, Beelen P, Bakker J: Use of a peripheral perfusion index derived from the pulse oximetry signal as a noninvasive indicator of perfusion. Crit Care Med 2002, 30: 1210-1213. 10.1097/00003246-200206000-00006PubMedCrossRef
27.
go back to reference Devlin JW, Boleski G, Mlynarek M, Nerenz DR, Peterson E, Jankowski M, Horst HM, Zarowitz BJ: Motor Activity Assessment Scale: a valid and reliable sedation scale for use with mechanically ventilated patients in an adult surgical intensive care unit. Crit Care Med 1999, 27: 1271-1275. 10.1097/00003246-199907000-00008PubMedCrossRef Devlin JW, Boleski G, Mlynarek M, Nerenz DR, Peterson E, Jankowski M, Horst HM, Zarowitz BJ: Motor Activity Assessment Scale: a valid and reliable sedation scale for use with mechanically ventilated patients in an adult surgical intensive care unit. Crit Care Med 1999, 27: 1271-1275. 10.1097/00003246-199907000-00008PubMedCrossRef
28.
go back to reference Pinsky MR: Using ventilation-induced aortic pressure and flow variation to diagnose preload responsiveness. Intensive Care Med 2004, 30: 1008-1010. 10.1007/s00134-004-2208-6PubMedCrossRef Pinsky MR: Using ventilation-induced aortic pressure and flow variation to diagnose preload responsiveness. Intensive Care Med 2004, 30: 1008-1010. 10.1007/s00134-004-2208-6PubMedCrossRef
29.
go back to reference Vieillard-Baron A, Chergui K, Augarde R, Prin S, Page B, Beauchet A, Jardin F: Cyclic changes in arterial pulse during respiratory support revisited by Doppler echocardiography. Am J Respir Crit Care Med 2003, 168: 671-676. 10.1164/rccm.200301-135OCPubMedCrossRef Vieillard-Baron A, Chergui K, Augarde R, Prin S, Page B, Beauchet A, Jardin F: Cyclic changes in arterial pulse during respiratory support revisited by Doppler echocardiography. Am J Respir Crit Care Med 2003, 168: 671-676. 10.1164/rccm.200301-135OCPubMedCrossRef
30.
go back to reference Michard F: Changes in arterial pressure during mechanical ventilation. Anesthesiology 2005, 103: 419-428. 10.1097/00000542-200508000-00026PubMedCrossRef Michard F: Changes in arterial pressure during mechanical ventilation. Anesthesiology 2005, 103: 419-428. 10.1097/00000542-200508000-00026PubMedCrossRef
31.
go back to reference Scheer B, Perel A, Pfeiffer UJ: Clinical review: complications and risk factors of peripheral arterial catheters used for haemodynamic monitoring in anaesthesia and intensive care medicine. Crit Care 2002, 6: 199-204. 10.1186/cc1489PubMedPubMedCentralCrossRef Scheer B, Perel A, Pfeiffer UJ: Clinical review: complications and risk factors of peripheral arterial catheters used for haemodynamic monitoring in anaesthesia and intensive care medicine. Crit Care 2002, 6: 199-204. 10.1186/cc1489PubMedPubMedCentralCrossRef
32.
go back to reference Cohen A, Reyes R, Kirk M, Fulks RM: Osler's nodes, pseudoaneurysm formation, and sepsis complicating percutaneous radial artery cannulation. Crit Care Med 1984, 12: 1078-1079. 10.1097/00003246-198412000-00017PubMedCrossRef Cohen A, Reyes R, Kirk M, Fulks RM: Osler's nodes, pseudoaneurysm formation, and sepsis complicating percutaneous radial artery cannulation. Crit Care Med 1984, 12: 1078-1079. 10.1097/00003246-198412000-00017PubMedCrossRef
34.
go back to reference McEllistrem RF, O'Toole DP, Keane P: Post-cannulation radial artery aneurysm--a rare complication. Can J Anaesth 1990, 37: 907-909. 10.1007/BF03006633PubMedCrossRef McEllistrem RF, O'Toole DP, Keane P: Post-cannulation radial artery aneurysm--a rare complication. Can J Anaesth 1990, 37: 907-909. 10.1007/BF03006633PubMedCrossRef
35.
go back to reference Slogoff S, Keats AS, Arlund C: On the safety of radial artery cannulation. Anesthesiology 1983, 59: 42-47. 10.1097/00000542-198307000-00008PubMedCrossRef Slogoff S, Keats AS, Arlund C: On the safety of radial artery cannulation. Anesthesiology 1983, 59: 42-47. 10.1097/00000542-198307000-00008PubMedCrossRef
36.
go back to reference Cannesson M, Besnard C, Durand PG, Bohe J, Jacques D: Relation between respiratory variations in pulse oximetry plethysmographic waveform amplitude and arterial pulse pressure in ventilated patients. Crit Care 2005, 9: R562-568. 10.1186/cc3799PubMedPubMedCentralCrossRef Cannesson M, Besnard C, Durand PG, Bohe J, Jacques D: Relation between respiratory variations in pulse oximetry plethysmographic waveform amplitude and arterial pulse pressure in ventilated patients. Crit Care 2005, 9: R562-568. 10.1186/cc3799PubMedPubMedCentralCrossRef
37.
go back to reference Loupec T, Nanadoumgar H, Frasca D, Petitpas F, Laksiri L, Baudouin D, Debaene B, Dahyot-Fizelier C, Mimoz O: Pleth variability index predicts fluid responsiveness in critically ill patients. Crit Care Med 2010, 39: 294-299.CrossRef Loupec T, Nanadoumgar H, Frasca D, Petitpas F, Laksiri L, Baudouin D, Debaene B, Dahyot-Fizelier C, Mimoz O: Pleth variability index predicts fluid responsiveness in critically ill patients. Crit Care Med 2010, 39: 294-299.CrossRef
38.
go back to reference Broch O, Bein B, Gruenewald M, Hocker J, Schottler J, Meybohm P, Steinfath M, Renner J: Accuracy of the pleth variability index to predict fluid responsiveness depends on the perfusion index. Acta Anaesthesiol Scand 2011, 55: 686-693. 10.1111/j.1399-6576.2011.02435.xPubMedCrossRef Broch O, Bein B, Gruenewald M, Hocker J, Schottler J, Meybohm P, Steinfath M, Renner J: Accuracy of the pleth variability index to predict fluid responsiveness depends on the perfusion index. Acta Anaesthesiol Scand 2011, 55: 686-693. 10.1111/j.1399-6576.2011.02435.xPubMedCrossRef
39.
go back to reference Shelley KH, Jablonka DH, Awad AA, Stout RG, Rezkanna H, Silverman DG: What is the best site for measuring the effect of ventilation on the pulse oximeter waveform? Anesth Analg 2006, 103: 372-377. 10.1213/01.ane.0000222477.67637.17PubMedCrossRef Shelley KH, Jablonka DH, Awad AA, Stout RG, Rezkanna H, Silverman DG: What is the best site for measuring the effect of ventilation on the pulse oximeter waveform? Anesth Analg 2006, 103: 372-377. 10.1213/01.ane.0000222477.67637.17PubMedCrossRef
40.
go back to reference Marik PE, Cavallazzi R, Vasu T, Hirani A: Dynamic changes in arterial waveform derived variables and fluid responsiveness in mechanically ventilated patients: a systematic review of the literature. Crit Care Med 2009, 37: 2642-2647. 10.1097/CCM.0b013e3181a590daPubMedCrossRef Marik PE, Cavallazzi R, Vasu T, Hirani A: Dynamic changes in arterial waveform derived variables and fluid responsiveness in mechanically ventilated patients: a systematic review of the literature. Crit Care Med 2009, 37: 2642-2647. 10.1097/CCM.0b013e3181a590daPubMedCrossRef
41.
go back to reference Cheatham ML, Malbrain ML, Kirkpatrick A, Sugrue M, Parr M, De Waele J, Balogh Z, Leppaniemi A, Olvera C, Ivatury R, D'Amours S, Wendon J, Hillman K, Wilmer A: Results from the International Conference of Experts on Intra-abdominal Hypertension and Abdominal Compartment Syndrome. II. Recommendations. Intensive Care Med 2007, 33: 951-962. 10.1007/s00134-007-0592-4PubMedCrossRef Cheatham ML, Malbrain ML, Kirkpatrick A, Sugrue M, Parr M, De Waele J, Balogh Z, Leppaniemi A, Olvera C, Ivatury R, D'Amours S, Wendon J, Hillman K, Wilmer A: Results from the International Conference of Experts on Intra-abdominal Hypertension and Abdominal Compartment Syndrome. II. Recommendations. Intensive Care Med 2007, 33: 951-962. 10.1007/s00134-007-0592-4PubMedCrossRef
42.
go back to reference Malbrain ML, Cheatham ML, Kirkpatrick A, Sugrue M, Parr M, De Waele J, Balogh Z, Leppaniemi A, Olvera C, Ivatury R, D'Amours S, Wendon J, Hillman K, Johansson K, Kolkman K, Wilmer A: Results from the International Conference of Experts on Intra-abdominal Hypertension and Abdominal Compartment Syndrome. I. Definitions. Intensive Care Med 2006, 32: 1722-1732. 10.1007/s00134-006-0349-5PubMedCrossRef Malbrain ML, Cheatham ML, Kirkpatrick A, Sugrue M, Parr M, De Waele J, Balogh Z, Leppaniemi A, Olvera C, Ivatury R, D'Amours S, Wendon J, Hillman K, Johansson K, Kolkman K, Wilmer A: Results from the International Conference of Experts on Intra-abdominal Hypertension and Abdominal Compartment Syndrome. I. Definitions. Intensive Care Med 2006, 32: 1722-1732. 10.1007/s00134-006-0349-5PubMedCrossRef
Metadata
Title
Impact of norepinephrine on the relationship between pleth variability index and pulse pressure variations in ICU adult patients
Authors
Matthieu Biais
Vincent Cottenceau
Laurent Petit
Françoise Masson
Jean-François Cochard
François Sztark
Publication date
01-08-2011
Publisher
BioMed Central
Published in
Critical Care / Issue 4/2011
Electronic ISSN: 1364-8535
DOI
https://doi.org/10.1186/cc10310

Other articles of this Issue 4/2011

Critical Care 4/2011 Go to the issue