Gn crbsi

GENERAL NEPHROLOGY CONFERENCE:
CRBSI
EDMUNDO M. PASAMBA, MD
ADULT NEPHROLOGY FELLOW

To discuss the burden of catheter-related blood stream
infection (CRBSI) among patients on hemodialysis
To present guidelines on diagnosis and treatment of CRBSI
To enumerate measures on how to prevent CRBSI

E.V.
61 y/o
Female
Filipino
Roman Catholic
Single
Unemployed
Highschool graduate
From Aklan, lives in
Quezon City
2nd admission last March 5,
2016

CHIEF COMPLAINT:
Fever of 2 weeks
duration

ESRD sec. to HPNNS
Maintenance hemodialysis 3x/wk since November 2015
CRBSI last January 2016 – Co-amoxiclav and IJ catheter
replacement
S/P AVF creation, left brachiocephalic (January 2016 ) not
yet cleared for use

2 weeks
 Fever & Chills
 Non-productive cough

Consult

HD

HD

HD

HD


Hypertension (~15 years)
 Losartan 100 mg OD and Amlodipine 10 mg OD
 Usual BP 140/80 mmHg
 Highest BP 200/110 mmHg
ESRD sec. to HPNNS (Nov. 2015)
 Maintenance hemodialysis 3x/wk (T-Th-S)
 S/P AVF creation, left brachiocephalic (Jan.18, 2016)

Hypertension (both parents)

Non-smoker
Non-alcoholic beverage drinker
Denies illicit drug use

General (-) Sweating, (-) weight gain, (-) weakness
Skin (-) Itching, (-) rashes, (-) changes in hair/nails
Eyes
(-) Visual impairment, (-) redness, (-) tearing, (-) pain, (-) double vision,
(-) discharge, (-) trauma
Ears (-) Hearing, (-) pain, (-) discharge, (-) tinnitus
Nose, Throat, Mouth
(-) Hoarseness, (-) sore throat, (-) trauma, (-) frequent colds, (-) nose bleeding,
(-) neck mass, (-) dental carries, (-) facial pain, (-) sinus disorder, (-) gum
Bleeding, (-) toothache
Respiratory (-) Dyspnea, (-) hemoptysis
Cardiovascular
(-) Chest pain, (-) palpitation, (-) syncope, (-) orthopnea, (-) paroxysmal nocturnal
dyspnea, (-) edema
Gastrointestinal
(-) Dysphagia, (-) nausea, (-) vomiting, (-) change in appetite, (-) abdominal pain,
(-) melena, (-) jaundice, (-) bleeding, (-) indigestion, (-) heartburn,
(-) hematemesis, (-) fatty food intolerance, (-) stool frequency/character,
(-) hemorrhoids, (-) hernia

Urinary
(-) Dysuria, (+) oliguria ~100 cc/day, (-) retention, (-) bleeding, (-) stream,
(-) nocturia, (-) stones, (-) hesitancy, (-) urgency, (-) change in color, (-) frequency,
(-) dribbling
Genito-Reproductive (-) Discharge, (-) pain, (-) libido, (-) sexual difficulties
Breast (-) Nipples, (-) lump, (-) pain, (-) discharge
Extremities (-) Cyanosis, (-) clubbing, (-) varicosity, (-) ulcers, (-) claudication
Hematopoietic
System
(-) Excessive bleeding/bruising, (-) pica
Nervous System
(-) Headache, (-) tremor, (-) fainting spells, (-) seizures, (-) neurological deficit,
(-) gait disturbance, (-) dizziness/vertigo, (-) head trauma, (-) sensory perversions
Musculoskeletal (-) Joint pain or stiffness, (-) muscle weakness
Endocrine System
(-) Heat/cold intolerance, (-) thyroid problems, (-) neck surgery/irradiation,
(-) proximal muscle weakness, (-) easy bruisability
Psychiatric (-) Mood swings, (-) behavioural changes, (-) anxiety, (-) depression

Gen. Survey Awake, coherent, ambulatory, not in respiratory distress
Vital Signs BP: 130/80 mmHg, HR: 88 bpm, RR: 19 cpm, Temp.: 37.8°C
Skin Warm and soft, no ecchymosis, no hematoma, no jaundice
HEENT
Anicteric sclera, pale palpebral conjunctiva, no tonsillopharyngeal
congestion, moist oral mucosa, no cervical lymphadenopathies, IJ
catheter site with no discharge
Chest/Lungs Equal chest expansion, bibasal crackles
Heart
Adynamic precordium, normal rate, regular rhythm, distinct S1 and S2,
PMI at 5th ICS LMCL, grade 3 systolic murmur
Abdomen
Flabby, normoactive bowel sounds, soft, no tenderness, no masses, no
hepatosplenomegaly
Extremities
Full and equal pulses, no edema, no cyanosis, good capillary refill
time, left brachicephalic AVF with good bruit

 Admitting impression
 Catheter-related blood stream infection
 T/C infective endocarditis
 Health-care associated pneumonia
 End stage renal disease sec. to hypertensive nephrosclerosis
 Hypertension
 Dx: CBC, electrolytes, blood CS x 2 sites, IJ catheter tip GS/CS,
sputum GS/CS, chest x-ray and 2D echo with doppler study
 Tx: IDS referral, empiric antibiotics (TZP, VAN & AZM), IJ
catheter removal and supportive treatment

Afebrile with stable vital signs
Dx:
 Repeat CBC
 Blood CS: Staphylococcus lugdunensis
 2D Echo with dopper study: possible vegetation in the aortic valve
Tx: antibiotics continued, IJ catheter reinsertion and
hemodialysis

Sudden onset of chest pain characterized as heaviness
associated with difficulty of breathing
BP 200/90, HR 130s, O2 sat. 89% at room air
Bibasal crackles and rhonchi
Impression: ACS
Dx: ECG, troponin I (1.731 ug/L  3.198 ug/L) and chest x-
ray

 Sudden onset of chest pain characterized as heaviness associated
with difficulty of breathing
 BP 200/90, HR 130s, O2 sat. 89% at room air
 Bibasal crackles and rhonchi
 Impression: ACS  NSTEMI
 Dx: ECG, troponin I (1.731 ug/L  3.198 ug/L) and chest x-ray
 Tx: CV referral, aspirin, clopidogrel, enoxaparin, atorvastatin,
nitrates, carvedilol, enalapril, O2 support, blood transfusion and
SLED

Afebrile, stable vital signs, no recurrence of chest pain or
difficulty of breathing
Decrease in sensorium, eye opening to vigorous stimulation,
does not follow command and with no verbal output
Impression: CVA, R/O bleed
Dx: plain cranial CT scan

Afebrile, stable vital signs, no recurrence of chest pain or
difficulty of breathing
Decrease in sensorium, eye opening to vigorous stimulation,
does not follow command and with no verbal output
Impression: acute intraparenchymal bleed, left frontal area
Dx: plain cranial CT scan
Tx: Neurology referral, antiplatelets and LMWH put on hold,
mannitol and NGT feeding started, Palliative Care referral

April 2016
 635 ER Nephrology consult
 31 cases of CRBSI
 Estimated cost
 Average length of stay - ~5 days
 Laboratories – ~Php 7,000 – 10,000
 Medications - ~Php 5,000 - 7,000
 Hemodialisys - ~Php 5,000
 IJ catheter replacement – ~Php 7,000
 ER fee – Php 3,350 + 3,240/24 hrs.
NKTI ER Census

 Decreasing incidence in the US and Canada
 Widespread prevention efforts
 Increased incidence in Latin America, Asia, Africa and Europe
 Resource-limited areas
 Lack of official regulations regarding catheter care
 The relative risk of tunneled dialysis catheters causing bacteremia in dialysis
patients is approximately 10 times higher than the risk of bacteremia in
patients with arteriovenous (AV) fistulas
 Catheter-dependent hemodialysis patients have a two- to threefold higher risk
of infection-related hospitalization and death as compared with patients
undergoing dialysis via a fistula or graft
 Cumulative likelihood of catheter-related bacteremia was 35 percent within
three months and 54 percent within six months of catheter insertion
UpToDate

The mean time from
admission to BSI onset
ranged from 12 to 26 days
and depended on the
isolated pathogen
The crude mortality rate
was 27 percent
UpToDate

HOST FACTORS
 Chronic illness
 Bone marrow transplantation
 Immune deficiency, especially
neutropenia
 Malnutrition
 TPN
 Previous BSI
 Extremes of age
 Loss of skin integrity as with burns
CATHETER FACTORS
 Duration of catheterization (although
there is no indication for routine line
changing based on number of catheter
days)
 Type of catheter material
 Conditions of insertion
 Catheter-site care
 Skill of the catheter inserter
UpToDate

 Femoral or internal jugular placement compared with subclavian
 Use for hyperalimentation or hemodialysis compared with other
indications
 Submaximal compared with maximal (mask, cap, sterile gloves,
gown, large drape) barrier precautions during insertion
 Nontunneled compared with tunneled insertion
 Tunneled insertion compared with a totally implantable device
 Bare compared with antibiotic impregnated catheter
 Thrombosis of the catheter, repeated catheterization, increased
manipulation of the catheter (including catheter repair) and presence
of septic foci elsewhere UpToDate

 Coagulase-negative staphylococci – 31
percent
 Staphylococcus aureus – 20 percent
 Enterococci – 9 percent
 Candida species – 9 percent
 Escherichia coli – 6 percent
 Klebsiella species – 5 percent
 Pseudomonas species – 4 percent
 Enterobacter species – 4 percent
 Serratia species – 2 percent
 Acinetobacter baumannii – 1 percent
UpToDate

 Metastatic infections
 5 to 10 percent of CRBSI
 Staphylococcus aureus (10 to
40 percent)
 Onset can occur weeks or
even months
 Osteomyelitis, endocarditis,
septic arthritis, epidural
abscess, etc.
 Suppurative thrombophlebitis
 Abscess
UpToDate

Fever & chills
Purulence at the insertion
site or an exit-site
infection
Hemodynamic instability
Altered mental status
Catheter dysfunction
Sepsis
UpToDate

CRBSI?
Blood CS
x 2 sites
Exclude other
possible causes
UpToDate

Obtaining
peripheral blood
cultures
Systemic blood is
circulating through
the dialysis system
Transport of
specimen
UpToDate

Concurrent positive blood cultures of the same organism
from the catheter and a peripheral vein
Culture of the same organism from both the catheter tip
and at least one percutaneous blood culture
Cultures of the same organism from two peripherally drawn
blood cultures and an absence of an alternate focus of
infection
Two cultures drawn at separate times (10 to 15 minutes)
from blood tubing
UpToDate

Antibiotic therapy
Catheter
management
UpToDate

Empiric treatment – broad-spectrum (gram +, gram – and
MRSA) and pharmacokinetics
Vancomycin / Daptomycin + Gentamicin / Ceftazidime
Stopping empiric therapy – negative blood cultures, no
other identified source of infection and signs and symptoms
resolved
Tailored treatment – based on the organism and sensitivity
UpToDate

Repeat blood cultures 48 to 96 hours after the institution of
treatment
Echocardiogram and evaluation for a metastatic infection in
all patients with prolonged S. aureus bacteremia (positive S.
aureus blood cultures that occur after 72 hours of therapy)
Serum antibiotic levels
UpToDate

 Infected catheter removed and replaced, all signs of infection rapidly
resolved and follow-up blood cultures were negative – two to three
weeks
 Infected catheter treated with an antibiotic lock solution – two to
three weeks
 Uncomplicated catheter-related bacteremia due to S. aureus – four
weeks
 Metastatic infection or blood cultures remain positive after three or
more days of appropriate therapy – at least six weeks of therapy
 Osteomyelitis – six to eight weeks
UpToDate

Immediate removal – best option
 Severe sepsis
 Hemodynamic instability
 Evidence of metastatic infection
 Signs of accompanying exit-site or tunnel infection, such as pus
at the exit-site
 If fever and/or bacteremia persist 48 to 72 hours after
initiation of antibiotics to which the organism is susceptible
 When infection is due to difficult-to-cure pathogens, such as S.
aureus, Pseudomonas, Candida, other fungi, or multiple-
resistant bacterial pathogens
UpToDate

Guidewire catheter exchange
 Delayed exchange of the infected cuffed catheter over a
guidewire with a new catheter two to three days after
institution of effective antimicrobial therapy and resolution of
fever
 Follow-up blood cultures even if the patient is asymptomatic
UpToDate

Antibiotic lock
 Alternative approach to immediate catheter removal with
delayed replacement or to guidewire catheter exchange
 Kill the bacteria present in biofilms
 Mixture of an anticoagulant (heparin or citrate) and high
concentrations of an antibiotic in a small volume
Leaving the catheter in place without intervention
 Biofilms form rapidly on the inner surface of infected central
vein catheters
UpToDate

Chronic need for
vascular access
Anatomic and
blood vessel
preservation issues
UpToDate

UpToDate
Aseptic technique Hand hygiene
Nonsterile gloves
and mask
Chlorhexidine
gluconate-
impregnated sponge

UpToDate
Site care
Elimination of S. aureus nasal carriage
Different type of dialysis catheters
Topical application of different substances
Antibiotic-lock technique
Catheters impregnated with antimicrobial agents
Topical antibiotics

UpToDate
Povidone-
iodine
Polysporin Mupirocin

CA-MRSA
Antimicrobial
resistance
UpToDate

Tunneled and cuffed
catheters decrease
infection and permit
longer usage
No significant decrease in
catheter-related
bacteremia and exit-site
infections with
antimicrobial coating of
hemodialysis catheters
UpToDate

Issues
Antimicrobial
resistance
Systemic
toxicity
Financial
burden
UpToDate

Antibiotic therapy
(Mupirocin) to decrease
nasal carriage of S.
aureus has led to fewer
access-related infections
The emergence of
resistance with chronic
antibiotic use has limited
the widespread adoption
of this technique
UpToDate

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