non-invasive mv
DESCRIPTION
NON-INVASIVE MV. Good news It works !!!!!!!. Warnings Not always Not for all Know the technique Be skilled. i-PSV and n-PSV delivered before and after extubation in patients not weaned. Arterial Blood Gases. pH PaCO 2 PaO 2 /FIO 2. i-PSV 7.38 59.1 206. n-PSV 7.38 61 210. - PowerPoint PPT PresentationTRANSCRIPT
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NON-INVASIVE MV
Good news
• It works !!!!!!!
Warnings
• Not always• Not for all• Know the technique• Be skilled
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(from Vitacca M. et al. AJRCCM 2001; 164: 638-641)
i-PSV and n-PSV delivered before andafter extubation in patients not weaned
Arterial Blood Gases
i-PSV
7.3859.1206
n-PSV
7.3861
210
pHPaCO2
PaO2/FIO2
T-tube
7.3369183
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NON-INVASIVE MV
• NIV in the “real-world”
• Setting the ventilator
• Choice of interfaces
• Humidification and drug delivery
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NON-INVASIVE MV
• NIV in the “real-world”
• Setting the ventilator
• Choice of interfaces
• Humidification and drug delivery
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The Use of Noninvasive Ventilation inAcute Respiratory Failure at a TertiaryCare Center*Elizabeth S. Paus-Jenssen, MD; John K. Reid, MD;Donald W. Cockcroft, MD, FCCP; Karen Laframboise, MD; and Heather A. Ward, MD, FCCP
Chest 2004; 126: 165-72
The Use of Noninvasive Ventilation inAcute Respiratory Failure at a TertiaryCare Center*Elizabeth S. Paus-Jenssen, MD; John K. Reid, MD;Donald W. Cockcroft, MD, FCCP; Karen Laframboise, MD; and Heather A. Ward, MD, FCCP
Chest 2004; 126: 165-72
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60% Hypercapnic
55% Hypoxic
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NON-INVASIVE MV
• NIV in the “real-world”
• Setting the ventilator
• Choice of interfaces
• Humidification and drug delivery
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Appropiate setting for long-term NPSVAppropiate setting for long-term NPSV (n=23 hypercapnic COPD patients) (n=23 hypercapnic COPD patients)
Appropiate setting for long-term NPSVAppropiate setting for long-term NPSV (n=23 hypercapnic COPD patients) (n=23 hypercapnic COPD patients)
(from Vitacca M. et al. Chest 2000)
-100
-75
-50
-25
0
25
50
75
100
VT f Pdi PTPdi PEEPi
Usual (IPS 16±3, EPAP 3.6±1.4)Physiological (IPS 15±3, EPAP 3.1±1.6)
Ch
ang
e (%
of
SB
)
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Assessment of Physiologic Variablesand Subjective Comfort Under DifferentLevels of Pressure Support Ventilation*Michele Vitacca, MD; Luca Bianchi, MD; Ercole Zanotti, MD;Andrea Vianello, MD; Luca Barbano, MD; Roberto Porta, MD; andEnrico Clini, MD, FCCP†
Chest 2004; 126: 851-59
Assessment of Physiologic Variablesand Subjective Comfort Under DifferentLevels of Pressure Support Ventilation*Michele Vitacca, MD; Luca Bianchi, MD; Ercole Zanotti, MD;Andrea Vianello, MD; Luca Barbano, MD; Roberto Porta, MD; andEnrico Clini, MD, FCCP†
Chest 2004; 126: 851-59
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Study protocolStudy protocol
Time (min)
SB (baseline)
10
V’E, PTP
0setting
V’E, PTPPao, IE RANDOM of ventilatorsRANDOM of ventilators
comfort
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NON-INVASIVE MV
• NIV in the “real-world”
• Setting the ventilator
• Choice of interfaces
• Humidification and drug delivery
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(from BTS Guideline Thorax 2002;57:192-211)
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Major problems with mask Major problems with mask during NIV supportduring NIV support
Major problems with mask Major problems with mask during NIV supportduring NIV support
Air leaksSide-effectsSize
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Side effects due to NPPVSide effects due to NPPVN=26 (compliant patients)N=26 (compliant patients)
Side effects due to NPPVSide effects due to NPPVN=26 (compliant patients)N=26 (compliant patients)
(from Criner GJ. et al. Chest 1999;116:667-675)
Mask leaksSkin irritationRhinitis / aerophagiaDiscomfort
4323138
%
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30
40
50
60
70
Untaped Taped
MOUTH LEAKS IN NASAL NPPVMOUTH LEAKS IN NASAL NPPV (n=9, hypercapnic=7, COPD=6, age 64 years)(n=9, hypercapnic=7, COPD=6, age 64 years)
MOUTH LEAKS IN NASAL NPPVMOUTH LEAKS IN NASAL NPPV (n=9, hypercapnic=7, COPD=6, age 64 years)(n=9, hypercapnic=7, COPD=6, age 64 years)
(from Teschler H. et al. ERJ 1999; 14: 1251-1257)
PtcCO2 (mmHg)
0
20
40
60
Untaped Taped
Arousal Index (events h-1)
p<0.001 p<0.0002
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Side effects due to NPPVSide effects due to NPPVN=26 (compliant patients)N=26 (compliant patients)
Side effects due to NPPVSide effects due to NPPVN=26 (compliant patients)N=26 (compliant patients)
(from Criner GJ. et al. Chest 1999;116:667-675)
Mask leaksSkin irritationRhinitis / aerophagiaDiscomfort
4323138
%
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Tissue Necrosis Caused by Tissue Necrosis Caused by an Improperly Fitting Maskan Improperly Fitting Mask
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(CCM 2002; 30: 602-608)
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CRITERI PER LA SCELTA DELLA
MASCHERA
Esperienza dell’équipe
Considerazioni anatomiche
Modalità di ventilazione
Compliance e sensorio del
paziente
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(from BTS Guideline Thorax 2002;57:192-211)
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NON-INVASIVE MV
• NIV in the “real-world”
• Setting the ventilator
• Choice of interfaces
• Humidification and drug delivery
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In the present pilot study, the use heated humidification and heat and moisture exchanger showed similar tolerance and side-effects, but a higher number of patients decided to continue long-term noninvasive mechanical ventilation with heated humidification.
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Crit Care Med 2002; 30:2515–2519
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To conclude, when using noninvasive positive pressure ventilation with two-level respirators, oxygen should be added close to the exhaust port (ventilator side) of the circuit. If inspiratory airway pressure levels are >12 cmH2O, oxygen flows should be at least 4 L*min-1
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Respir Care 2004;49(3):270–275.
CONCLUSIONS Delivered oxygen concentration during BiPAP is a complex interaction between the leak port type, the site of oxygen injection, the ventilator settings, and the oxygen flow.Because of this, it is important to continuously measure arterial oxygen saturation via pulse oximetrywith patients in acute respiratory failure who are receiving noninvasive ventilation from a bi-level ventilator.