DEATH DESPITE APPROPRIATE ANTIBIOTICS 7... · Marin H. Kollef, MD Professor of Medicine Virginia E....
Transcript of DEATH DESPITE APPROPRIATE ANTIBIOTICS 7... · Marin H. Kollef, MD Professor of Medicine Virginia E....
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DEATH DESPITE APPROPRIATE
ANTIBIOTICS
Marin H. Kollef, MD
Professor of Medicine
Virginia E. and Sam J. Golman Chair in
Respiratory Intensive Care Medicine
Washington University School of Medicine
St. Louis, Missouri
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Conflicts of Interest 1.Merck
2.Actavis
3.Arsanis
4.Cardeas
5.Cubist
6.Medimmune
7.Astrazeneca
8.Accelerate
9.Academy for Infection Management
10.Barnes-Jewish Hospital Foundation
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3 The Review on Antimicrobial Resistance Chaired by Jim O’Neill December 2014
Commissioned Report By
UK Government and
the Wellcome Trust
> Ten Million Deaths
Yearly By 2050 A global problem!
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DEATH DESPITE APPROPRIATE ANTIBIOTICS
• Host factors
• Pathogen virulence
• Antibiotic concentrations
• Source control
• Other complications
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DEATH DESPITE APPROPRIATE ANTIBIOTICS
• Host factors
• Pathogen virulence
• Antibiotic concentrations
• Source control
• Other complications
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6 Tang J and Chan P. N Engl J Med 2007;357:1855
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Immunologic Response to Critical illness
Hyp
eri
mm
un
e
No
rmal
Hyp
oim
mu
ne
Imm
un
e S
tatu
s
Days
Healthy Person
Elderly patient with malnutrition & alcoholism
Patient w/ diabetes, chronic renal failure, &
pneumonia
Hotchkiss R and Karl I. N Engl J Med 2003;348:138-150.
Recovery
Death
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8 Limaye, A. P. et al. JAMA 2008;300:413-422.
ICU Patients – Continued
hospitalization or death
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9 Boomer JS, et al. JAMA 2011; 306: 2594–2605.
Apoptosis of CD4, CD8, and HLA-DR cells
(dendritic cells, macrophages, and B cells)
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10 PD-1 = Programmed Cell Death Protein 1
Hotchkiss RS, et al. Lancet Infect Dis. 2013; 13: 260–268
Interleukin 7 and anti-PD-1 immunotherapy in sepsis
PD-1 = Programmed
Cell Death Receptor-1
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Antigen Presenting Cell (APC) and T cell Interactions
- inhibitory pathways PD-1 and CTLA-4
Apoptotic cell death
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Topalian et al. NEJM online June 2nd 2012.
Brahmer et al. NEJM online June 2nd 2012.
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• 87% response rate among heavily pretreated patients with
Hodgkin’s lymphoma receiving nivolumab (anti-PD-1)
• 40% response rate for patients with malignant melanoma
treated with anti-PD-1
January 22nd , 2015
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• Apoptosis-induced immunosuppression
(immune effector cells / tumor cells)
• Chronic Ag stimulation (DAMPs/PAMPs) leading to T cell exhaustion
• Expression of neg co-stimulatory molecules (PD-1, PD-L1, CTLA4)
• Increased anti-inflammatory cytokine production
• Decreased expression of HLA-DR class I and class II
• Increased myeloid suppressor cells
• Increased T regulatory cells.
Given common immunosuppressive mechanisms, it is likely that the
immunotherapeutic drugs that work in cancer may work in sepsis as well.
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15 Hotchkiss RS, Moldawer LL. N Engl J Med 2014;371:380-383.
Immune Phenotypes of Cancer & Protracted Infection
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16 Chang K, et al. Crit Care 2014, 18:R3.
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DEATH DESPITE APPROPRIATE ANTIBIOTICS
• Host factors
• Pathogen virulence
• Antibiotic concentrations
• Source control
• Other complications
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Toxic protein exoproducts of P. aeruginosa
Exoproduct Gene symbol
Pseudomonas
genome database
locus tag
Secretory type Activity Effect on host
Alkaline protease aprA PA1249 I Proteolysis
Blocks
complement
activation
Elastase (LasA
and LasB) lasA and lasB PA1871 and PA3724 II Elastolytic activity Tissue destruction
Exotoxin A toxA PA1148 II ADP-
ribosyltransferase Cytotoxin
Phospholipase C plcH and plcN PA0844 and PA3319 II Phospholipase C Heat-labile
hemolysis
ExoS (exoenzyme
S, 49-kDa) exoS PA3841 III
ADP-
ribosyltransferase,
GAP
Anti-phagocytosis
ExoT (exoenzyme
S, 54-kDa exoT PA0044 III GAP activity
Blocks wound
healing
ExoU exoU - III Phospholipase A2 Cytotoxin, anti-
phagocytosis
ExoY exoY PA2191 III Adenylate cyclase Edema formation
Sawa et al. Critical Care 2014 18:668.
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Alveolar epithelial injury caused by the ExoU
cytotoxin of Pseudomonas aeruginosa
Sawa et al. Critical Care 2014 18:668.
Pseudomonas aeruginosa type III secretion system
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Probability estimate for 5-day mortality of P. aeruginosa bacteremia
according to type III secretion system exoU genotype and MDR status
Peña C, et al. Clin Infect Dis 2015;60:539-548.
P < 0.002 P < 0.28
Early Mortality
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Probability estimate for 30-day mortality of P. aeruginosa bacteremia
according to type III secretion system exoU genotype and MDR status
Peña C, et al. Clin Infect Dis 2015;60:539-548.
P < 0.58 P < 0.02
Late Mortality
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Variables
Crude Analysis Adjusted Analysis
HR (95% CI) P Value HR (95% CI) P Value
Non-MDR P. aeruginosa susceptibility
No
Yes 1.23 (.79–1.90) .34
TTSS exoU
No
Yes 1.81 (1.24–3.16) .004 1.90 (1.15–3.14) .01
Adequate empiric antibiotic
No
Yes 0.89 (.57–1.39) .62
Cox Regression Analysis of Predictors for Early
Mortality of P. aeruginosa Bloodstream Infection
Peña C, et al. Clin Infect Dis 2015;60:539-548.
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Variables
Crude Analysis Adjusted Analysis
HR (95% CI) P Value HR (95% CI) P Value
MDR P. aeruginosa susceptibility
No
Yes 1.42 (1.04–1.93) .026 1.40 (1.01–1.94) .04
TTSS exoU
No
Yes 0.90 (.62–1.30) .58
Adequate definitive antibiotic
No
Yes 1.33 (.71–2.49) .44
Cox Regression Analysis of Predictors for 30-Day
Mortality of P. aeruginosa Bloodstream Infection
Peña C, et al. Clin Infect Dis 2015;60:539-548.
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Determinants of Outcome in P. aeruginosa Infections
Early Late
Virulence Antibiotic Resistance
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Panobacumab treatment in immunosuppressed P.
aeruginosa-infected mice (Pneumonia)
Secher T, et al. PLoS ONE 2013;8(9): e73396. doi:10.1371/journal.pone.0073396.
IgM/κ monoclonal
antibody directed
against the LPS O-
polysaccharide moiety
of P. aeruginosa
serotype IATS O11
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(A) Patients with nosocomial
Pseudomonas aeruginosa O11
pneumonia receiving ≥1 dose of
panobacumab (blue: intent-to-treat
group; n = 17) versus untreated
patients (red: n = 14). p-Value (log-rank
test): 0.3008.
(B) Patients with nosocomial P.
aeruginosa O11 pneumonia receiving
the full treatment (three doses) of
panobacumab (blue: per-protocol
group; n = 13) versus untreated
patients (red: n = 14). p-Value (log-rank
test): 0.0045.
Que YA, et al. Eur J Clin Microbiol Infect Dis 2014;33:1861-1867.
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DEATH DESPITE APPROPRIATE ANTIBIOTICS
• Host factors
• Pathogen virulence
• Antibiotic concentrations
• Source control
• Other complications
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29 Kollef, MH, et al. Crit Care 2012;16(6):R218.
CPIS for Pseudomonas aeruginosa MITT
0
1
2
3
4
5
6
7
8
1 2 3 4 5 6 7 8 9 10 11
To
tal
CP
IS s
co
re
Study Day
Doripenam
Imipenam
EOT Doripenem
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30
0
20
40
60
80
100
120
1 3 5 7 9 11 13 15 17 19 21 23 25 27
Pro
bab
ilit
y o
f S
urv
ival
Doripenam
Imipenam
28-Day All Cause Mortality: P. aeruginosa
P=0.040, Log-Rank Test
Kollef, MH, et al. Crit Care 2012;16(6):R218.
EOT
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Doripenem Mean Concentration by CrCl
Time (Hours)
0 1 2 3 4 5 6
Do
rip
enem
Pla
sma
Co
nce
ntr
atio
n (
µg
/mL
)
0
5
10
15
20
25Super Normal Renal Function (n=10)
Normal Renal Function (n=12)
Mild Renal Impairment (n=15)
Moderate Renal Impairment (n=4)
Severe Renal Impairment (n=2)
Supra Normal Renal Function n=10 10.7 (33.5) ug/mL
Normal Renal Function n=12 18.1 (30.8) ug/mL
Mild Renal Impairment n=15 15.1 (46.6) ug/mL
Moderate Renal Impairment * n=4 10.5 (10.6) ug/mL
Severe Renal Impairment* n=2 16.3 (10.4) ug/mL
Mean Cmax (%CV)
Note that full
dose interval is
8 hours*
* Subjects with moderate renal impairment
Rx with 500mg q8h; severe with 500mg q12h
PK similar in males and females
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β-lactam Underdosing in Patients with
Augmented Renal Clearance (ARC)?
ARC = supranormal
glomerular filtration
ClCr > 130 ml/min/1.73m2
Cockcroft Gault ClCr =
(140-age) x Wt x 1.73
(Scr x 72 x BSA) x 0.85 (female)
Most common in critically
ill patients with:
– SIRS/Sepsis
– Trauma
Tro
ugh c
once
ntr
ation:M
IC
1
10
100
50 100 150 200 250 300 350
ClCr (ml/min/1.73m2)
Udy AA et al. Chest 2012;142:30-39. Baptista JP et al. Crit Care 2011;15:R139.
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33 Basilea (On File)
Ceftobiprole 500 mg q 8 hours as a 120-minute infusion
Linezolid 600 mg q 12 hours as a 60-minute infusion & Ceftazidime 2 g q 8 hours
as a 120-minute infusion
VERSUS
Dosing in VAP Matters!
Infection
type
Treatment group Predicted
mortality*
(%)
Actual mortality
(%)
Non-VAP Ceftobiprole 18.5 18.8
Non-VAP Linezolid/Ceftazidime 19.0 21.2
VAP Ceftobiprole 24.2 33.7
VAP Linezolid/Ceftazidime 24.2 22.6
*Based on Knaus et al. Crit Care Med 1985;13:818
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Mortality/Noncure Rates: Tigecycline vs Comparators
Prasad P et al. Clin Infect Dis. 2012;54:1699-1709.
100 mg IV initial dose, followed by 50 mg IV every 12 hours.
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PK/PD RATIOS OBSERVED AT 50% (A) AND
100% (B) OF THE DOSING INTERVAL
Roberts J A et al. Clin Infect Dis. 2014;58:1072-1083.
Ratio of 1 minimal
PK/PD target
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A, EFFECT OF INCREASING PK/PD RATIO AT 50% OF DOSING
INTERVAL INTERACTION WITH APACHE II ON PROBABILITY
OF POSITIVE CLINICAL OUTCOME (N = 248; Y-AXIS)
Roberts J A et al. Clin Infect Dis. 2014;58:1072-1083.
All No RRT
0 – 14
18 - 24
APACHE II
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DEATH DESPITE APPROPRIATE ANTIBIOTICS
• Host factors
• Pathogen virulence
• Antibiotic concentrations
• Source control
• Other complications
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38 Kollef M, et al. Clin Infect Dis. 2012;54:1739-1746.
N = 180
N = 44
P < 0.001
Early treatment of candidemia decreases
mortality of ICU patients with septic shock
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39 Kollef M, et al. Clin Infect Dis. 2012;54:1739-1746.
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I. Adequate therapy and adequate source control
II. Adequate therapy and inadequate source control
III. Inadequate therapy and inadequate source control
(I versus III, P< .001; log-rank test)
Multicenter Study of Candida Septic Shock :
Outcomes and Predictors of Mortality (N = 216)
Bassetti M, et al. Intens Care Med 2014;40:839-845.
Hospital Days
% S
urv
ival
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DEATH DESPITE APPROPRIATE ANTIBIOTICS
• Host factors
• Pathogen virulence
• Antibiotic concentrations
• Source control
• Other complications
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VTE Incidence and Risk Factors in Patients
With Severe Sepsis and Septic Shock
Kaplan D, et al. Chest. 2015;148:1224-1230.
N = 113
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43 ARISE Investigators. N Engl J Med 2014;371:1496-1506.
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44
Conclusions Mortality in severe sepsis and septic shock is
often dictated by non-antibiotic factors:
• Host Factors
• Pathogen Virulence
• Source Control
• Other Complications
Therefore, interventions aimed at treating or
modifying these factors are needed to optimize
patient outcomes.
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Thank you!