approaching infection outbreak in picu

How do I approach Infection Outbreak in PICU?

Dr Farhan ShaikhConsultant Pediatric Intensivist

Internal assessor for Quality StandardsRainbow Children’s Hospital

Hyderabad

• Infection control Nurse informs the PICU consultant that there are two children with MDR Acinetobacter (one in Blood culture and the other in the ET secretion) in the PICU

• Is this an “Acinetobacter outbreak”?

What is an Outbreak?

• New cases (incidence) in a given population, during a given time period, at a rate that

substantially exceeds what is "expected.” or “back ground rate”

• Investigation of Outbreaks by William R Jarvis Chapter 7.• Hospital Epidemiology and Infection Control by C.Glen mayhall 3rd Edn Lippincott Williams & Wilkins

ApproachConfirm the Outbreak:•Investigate patient and Environment•Calculate the attack rate•Compare it with the Back ground rate

Management of the outbreak• Treatment of the infected patients (Source control)• Prevention of transmission - Isolation and Cohorting - Implementation of strict sterlization &

disinfection Measures

Outbreak Investigation

Resources:•Personnela)Lead Investigator, b)Statistician c) support staff •Supplies•Laboratory

Hospital Epidemiology and Infection Control by C.Glen mayhall 3rd Edn Lippincott Williams & Wilkins

Microbiological aspects• Most of the times, it is the Microbiology which

identifies an outbreak.

• Typing of the organisms related to the outbreak, to determine if the infected patient is indeed the part of the outbreak

Other methods of typing are..• phage typing, serotyping, iso-enzyme

electrophoresis, plasmid analysis, etc

Case Definition should include..• Time, place, person,

• Clinical and Lab parameters ( date of onset of illness, symptoms, signs, specific Lab or diagnostic finding)

• Epidemiological parameters (e.g. a patient’s presence in a specific ward, during a specific timing)


Example of case definitions

"A case of multidrug-resistant tuberculosis during an outbreak between 2009-2011 can be defined as..any patient diagnosed with active tuberculosis from January 2009 through Oct 2011 whose M. tuberculosis isolate is resistant to at least isoniazid and rifampin,"


Patient and Environmental Investigation

• Passive Surveillence• Active surveillence- - Screening of patients (Universal or focused) - Screening of health care workers who are

symptomatic or suspected to be part of outbreak

- Surveillence swabs from the patient environment keeping in mind the target organism

(e.g. for Aspergillus spp, target the air handling units and AC ducts)

Comparison of the outbreak period arrack rate to the background rate can be performed using the rate ratio:

Attack rate during epidemic period Attack rate during background period

The Action Plan

Patient education Displaying posters and distributing hand outs to patients attendants about minimizing visits, and other relevant care

Education & Increased Awareness amongst health care workers

• Educational Presentations for leaders to share with staff

• Updating the PICU nurses and doctors about “unit specific rates” of the target infection.

• This will keep everybody working in the unit “aware” and “motivated”

Hand Hygeine:• There is conclusive evidence of a temporal

relationship between improved hand hygiene practices and decreased infection rates.

Prevention and Treatment of Health Care–Acquired Infections Leanne B. Gasink, MD, MSCE,Ebbing Lautenbach, Med Clin N Am 92 (2008) 295–313

• In more than 30 observational studies between 1980 and 2000 the rates of appropriate hand hygiene were reported to range from 5% to 81%, with an average rate of 40%.

Boyce JM, Pittet D. Et al.Am J Infect Control 2002;30(8):S1–46

• There is increasing evidence that the level of bedside nurse-staffing influences the quality of patient care.

• The association of nursing staff shortages with increased rates of infection outbreaks in ICUs has been demonstrated in several studies.

Jane D. Siegel, Emily Rhinehart,et al. 2007 Guideline for Isolation Precautions: Preventing Transmission of Infectious Agents in Healthcare Settings .CDC

http://www.who.int/gpsc/5may/How_To_HandWash_Poster.pdf © World Health Organization 2009. All rights reserved., and the 'How to Handrub', URL: http://www.who.int/gpsc/5may/How_To_HandRub_Poster.pdf © World Health Organization 2009. All rights reserved.'

Masks

•Only recommended when performing splash generating procedures (e.g., wound irrigation, oral suctioning, intubation); contaminated wounds (e.g. Burns)

•When the HCP has infection e.g. sinusitis

Jane D. Siegel, MD; et alManagement of Multidrug-Resistant Organisms In Healthcare Settings, 2006 CDC

Gowning

• There is no significant difference in the infection rate between the use or non-use of cover gowns in an intensive care unit.

Nathan L. Belkin, Association for Professionals in Infection Control and Epidemiology. AJIC Am J Infect Control 1997;25:401-4

• “Routine” use of Gown in ICUs depends on the problems of each setting and priorities.

Smith CD. Cover gowns, surgical hand scrubs, smoke evacuators, operative record abbreviations; open sterile setupsclinical issues. AORN J 1995;61:753

Due to the nature of care provided in the ICUs, 80% of the ICU infections come under..

• Burke JP. Infection control a problem for patient safety. N Engl J Med 2003;348(7):651–6.• National Nosocomial Infections Surveillance S. National Nosocomial Infections Surveillance (NNIS) System Report, data summary from January 1992 through June 2004, issuedOctober 2004. Am J Infect Control 2004;32(8):470–85.

• bloodstream infections (BSI), and • Nosocomial Pneumonia (NP or VAP)• urinary tract infections (UTIs), • surgical site infections (SSIs),

Great material available online from reputed sites (IDSA,CDC, SCCM, etc)

•VAP prevention guidelines•CR-BSI prevention guidelines•CA-UTI prevention guidelines•SSI prevention guidelines

Remembering and implementing the guidelines is the biggest challenge!

Airline Industry

• Safest mode of transportation (one accident for every 1.6 million flights)

• A person is more likely to die on the way to the airport than in a plane crash

Airline Industry Records 2010 as Safest Year in Aviation History FEBRUARY 24TH, 2011 • BY AVIATION NEWS

Concept of using “Check list”

• The cockpit routines are standardized with “checklists” which are followed at every step.

• Thus avoids problems of “forgetting", or omissions.

Concept of using “Bundles”• A bundle is a structured set of evidence-based

practices for improving the processes of care and patient outcomes.

• It is a small, straightforward set of practices (elements)— generally three to five — that, when performed collectively and reliably, have been proven to improve patient outcomes.

Resar R, Pronovost P, Haraden C, Simmonds T, et al. Using a bundle approach to improve ventilatorcareprocesses and reduce ventilator-associated pneumonia. Joint Commission Journal on Quality andPatient Safety. 2005; 31(5):243-248

http://www.ihi.org/IHI/Topics/CriticalCare/IntensiveCare/Literature/UsingaBundleApproachtoImproveVentilatorCareProcessesandReduceVAP.htm



• The elements are all based on randomized controlled trials (i.e. Level 1 evidence— obtained from at least one properly designed RCT).

• The elements are all necessary and all sufficient. If any one element is removed, the desired results would not be achieved.

Cr-BSI care bundle

• Proper hand hygiene before and after procedure

• Maximal barrier precautions upon insertion

• Chlorhexidine skin preparation

• Nursing personnel empowered to stop the procedure in case of any procedure deviation

• Daily review of line necessity with prompt removal of unnecessary lines

VAP Bundle

• Head end of the bed elevation

• Mouth care with chlorhexidine-based mouth wash

• Deep venous thrombosis prophylaxis

• Gastrointestinal prophylaxis• Ventilator tube changed

weekly unless contaminated

• Sedation stop at 7:30 am and assessment for weaning

Bundle Criteria

Use a single column for each Ventilated patient. Mark the appropriate response in the box.

Optimal answerDay

1

Day

2

Day

3

Day

4

Day

5

Day

6

D

a

y

7

Prevention of aspiration of contaminated secretions

Elevate head of bed 30-45

degrees

Ventilator circuit drained

before repositioning patient

Prevention of bacterial colonization of oropharynx, stomach & sinuses

Hand hygiene performed before & after

contact with ventilator circuit.

Yes/No

Condensate from ventilator circuit drained

every 2-4 hours

Oral suction devices rinsed after every use

& stored in plastic covers

Unit mouth care policy followed every 2-4

hrs

Sheet No:

Gowns worn before

providing care to the

patient whenever soiling

from respiratory

secretions observed

Ventilator circuits & in-

line suction catheters

changed only if visibly

soiled

Did the patient develop

VAP today as per the

defined criteria?

Yes/No

Reason if Head end not elevatedN 1: Pt unstable N 4: Other (Add comment)N 2: Surgical restrictionN 3: Raised ICT

Reason if ventilator circuit condensate not drainedD 1: Busy scheduleD 2: Did not rememberD 3: Bed non-functional

Environmental and Infection Control Supports

• Several outbreaks have occurred as a result of improper disinfection and sterilization.

Controlling Antimicrobial Resistance in the Hospital. DeverickJ.et al. Infect Dis Clin N Am 23 (2009) 847-864

• Complete item wise discussion is beyond the scope of this talk, but can be downloaded from ..

Guideline for Disinfection and Sterilization in Healthcare Facilities, 2008

William A. Rutala, Ph.D., M.P.H.1,2, David J. Weber, M.D., M.P.H.1,2, and the Healthcare Infection Control Practices Advisory Committee (HICPAC) on the CDC website.

Spaulding categorized the process as..

Critical items:Items entering body or vascular systemMust be sterilized by steam under pressure, dry heat ,Or for heat sensitive items ETO

Semicritical : Items in contact with mucosa or non-intact skin.Disinfection by a high level disinfectant (e.g. Gluteraldehyde)

Spaulding EH. Chemical disinfection of medical and surgical materials. In: Lawrence C, Block SS, eds. Disinfection, sterilization, and preservation. Philadelphia: Lea & Febiger, 1968:517-31.

• Noncritical items come in contact with intact skin but not mucous membranes.

Noncritical items are ..• noncritical patient care items e.g. bedpans,

blood pressure cuffs, crutches, bed rails • noncritical environmental surfaces e.g., bedside

tables, patient furniture, computers and floors etc.

• Spaulding EH. Chemical disinfection of medical and surgical materials. In: Lawrence C, Block SS, eds.

• Disinfection, sterilization, and preservation. Philadelphia: Lea & Febiger, 1968:517-31.

FUMIGATION• NOT RECOMMMENDED

• Besides being ineffective, the agents are toxic and irritating to the eyes and mucous membranes.

• makes rooms unavailable for use, leading to disruption services

• Garner JS. Guideline for isolation precautions in hospitals. The Hospital Infection Control Practices Advisory Committee. Infect. Control Hosp. Epidemiol. 1996;17:53-80.

• Centers for Disease Control. Guidelines for Environmental Infection Control in Health-Care Facilities, 2003. MMWR 2003;52 (No. RR-10):1-44.

• Mop-clean the surfaces (e.g., floors, bed rails , incubators,warmers,table tops) on a regular basis (3 to 5 times a day),

• The walls, of the ICU to be mopped when visibly soiled and at least once every week.

William A. Rutala, Ph.D., M.P.H.1,2, David J. Weber, M.D., M.P.H.1,2, and the Healthcare Infection Control Practices Advisory Committee (HICPAC) Guideline for Disinfection and Sterilization in Healthcare Facilities, 2008 .CDC

• Prepare fresh disinfecting solutions with or without a tuberculocidal activity

• Fresh solution in every area or one solution for three rooms, change no less often than at 60-minute intervals)

• Decontaminate mop heads by immersing in 1% NaOCl for 3 minutes every 30 minutes to prevent contamination

William A. Rutala, Ph.D., M.P.H.1,2, David J. Weber, M.D., M.P.H.1,2, and the Healthcare Infection Control Practices Advisory Committee (HICPAC) Guideline for Disinfection and Sterilization in Healthcare Facilities, 2008 .CDC

Isolation and Cohorting

Isolation and Cohorting• Selective placement of patients by keeping

the child in a single room with separate hand washing facilities

• if single rooms are not available, or if there is a shortage of single rooms, patients infected or colonized by the same organism can be cohorted (sharing of room/s).

Transmission based Precautions Contact precautions

Airborne precautions and

Droplet precautions.

Practical Guidelines for Infection Control in Health Care Facilities. SEARO Regional Publication No. 41 WPRO Regional Publication.WHO.2004

Contact precautions

• Current guidelines recommend implementing contact precautions routinely for allpatients colonized or infected with a target MDRO.

• E.g. MRSA, VRE, ESBL-producing organisms,Acinetobacter. and Pseudomonas (including colonization)

• Siegel JD, RhinehartE, Jackson M, et al. Management of multidrug-resistant organ-isms in health care settings, 2006. Am J Infect Control 2007;35(10 Suppl 2): S165-93.

• Practical Guidelines for Infection Control in Health Care Facilities. SEARO Regional Publication No. 41 WPRO Regional Publication.WHO.2004

Implement standard precautions.

• Wear a clean, gown before entering the room and remove it before coming out of the room.

• Strict hand washing and hand hygiene practices

• Strict mopping and cleaning schedule of the room to be maintained

• No sharing of any equipment from this place with anybody outside the isolation

Implement standard precautions.

• All bed sheets and pillow covers to be kept in yellow bag and sent to Central solucing unit where NaOCl treatment for 30 mins and then washing and sending to laundry

Airborne precautions

• When droplet nuclei (evaporated droplets) <5 micron in size are disseminated in the air.

• E.g. H1N1 pneumonia, measles, chicken pox, pulmonary plague etc


Airborne precautions• Implement standard precautions.• Place patient in a “negative pressure room”

(6-12 air exchanges with separate air exit through separate filters)

• Anyone who enters the room must wear a special, high filtration, mask (e.g. N 95).

• If transport of patient is necessary, minimize dispersal of droplet nuclei by masking the patient with a N95 mask.

Droplet precautions

• Droplets (>5 microns) are usually generated from the infected person during coughing, sneezing, talking or tracheal suctioning.

• E.g. MRSA or Acinetobacter pneumonias, pertussis, diphtheria, influenza type B, mumps, and meningitis.


Droplet precautions

• Implement standard precautions.

• No need of N95 masks or Negative pressure room

• Wear a surgical mask when working within 1-2 meters of the patient.

Antimicrobial stewardshipIt is a program providing a standard, evidence-based approach to judicious antimicrobial use.

•Preparation of unit specific Antibiogram•Antibiotic use monitoring•Nurse empowerment•De-escalation•Antibiotic Cycling

Controlling Antimicrobial Resistance in the Hospital DeverickJ. Anderson et al. Infect Dis Clin N Am 23 (2009) 847-864 . Jane D. Siegel, MD; et al Management of Multidrug-Resistant Organisms In Healthcare Settings, 2006.CDC

Universal Screening

• Advantages:– Screen every patient admitting in the PICU– No need to “flag” patients

• Disadvantages:– More costly

Jane D. Siegel, MD; et al Management of Multidrug-Resistant Organisms In Healthcare Settings, 2006 CDC

Focused ScreeningWhom to screen?

Previous admission within 6 m. Transfer from area known to have MDRO ICU length of stay LOS > 4 d. H/O use of multiple antibiotics

Advantages:– Cheaper

Disadvantage:– May miss patients with other risk factors


• Routine screening of the health care workers (nurses and doctors) is not recommended.

• Done if the HCP is symptomatic or suspected to be epidemiologically related in the outbreak.

• E.g. If a new case of H1N1 detected, screen the doctors and nurses who are un-immunized and were in close contact of the patient

• Haley, R. W., Cushion, N. B., Tenover, F. C., Bannerman, T. L., Dryer, D., Ross, J., Sanchez, P. J., & Siegel, J. D. (1995) J Infect Dis 171, 614-624

• Jane D. Siegel, MD; et al Management of Multidrug-Resistant Organisms In Healthcare Settings, 2006 CDC

Decolonization

•Done usually for MRSA, of only those colonized Health care workers, who are symptomatic or are linked epidemiologically to the outbreak

• Controlling Antimicrobial Resistance in the Hospital DeverickJ. Anderson et al. Infect Dis Clin N Am 23 (2009) 847-864

• Boyce, J. M. (2001) J Hosp Infect 48 Suppl A, S9-14.

topical mupirocin alone or....in combination with oral antibiotics (e.g., rifampin in with trimethoprim- sulfamethoxazole or ciprofloxacin) plus.. ..an antimicrobial (chlorhexidine) soap bathing


Scenario

In a 10 bedded PICU, there was an unusual increase incidence of MRSA found by the Microbiology Dept

Outbreak investigationScreening of the patients suspected to be part of OutbreakSurveillance swabs of Environment

Core CompetenciesEducation of pts &visitorsHand hygienepracticesEducation of HealthCare Workers

Environmental & Infection ControlIsolation and cohorting•Droplet precautions for MRSA Pneumonia.•Contact precaution for non pulmonary MRSA•Hand hygiene Audits

Emergency meeting called.Participants: Infection control team, PICU Consultants, PICU nurse in-charge, Hospital administrator & House keeping

During environmental investigation, the surveillance swab from ET end of AMBU bag isolated MRSA

• All the PICU equipment, after washing & drying, were kept in one Gluteraldehyde (Cidex) tray

• The Cidex solution was changed every 14 days as per the “company recommendation”

• When “Cidex test stick” was used to check the potency of Cidex solution , it failed test on 9th day !

Thorough auditing of whole sterilization &Disinfection procedure was made

Recommendation:•Do not keep multiple articles in same Cidex tray•Check the potency every 7 days with Cidex strips

Subsequent surveillance swabs from articles did not show the MRSA

• Training of nurses on sterilization & disinfection

• Infection control Nurse asked to be more vigilant and organized in her daily rounds

THUS COMPLETING AUDIT CYCLE

Audit: How to do in practice? BMJ 2008;336:1241-5

Administrative support

• In several reports, administrative support and involvement were important for the successful control of Infection Outbreaks.

Haley, R. W., Cushion, N. B., Tenover, F. C., Bannerman, T. L., Dryer, D., Ross, J., Sanchez,P. J., & Siegel, J. D. (1995) J Infect Dis 171, 614-624

“without the support of the top management, the infection control team is a bunch of jokers”

The formula to bring change!!

D x V x F > RD- Discomfort (or dissatisfaction with the status

quo)V- Vision (of the preferred future)F- First steps (clarity of the plan for how to move

forward)R- Resistance factors

“The product of the discomfort, vision, and first steps must be greater than the resistance or the change will fail

Dannemiller & Jacobs (1992)

THANK YOU

approaching infection outbreak in picu

Health & Medicine

Transcript of approaching infection outbreak in picu