Peritonitis in Pd Patients

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    Overview

    Peritoneal Dialysis - principles

    Anatomy

    Physiology

    Pathology

    Presentations

    Management

    Key points

    www.health.com/

    http://www.health.com/http://www.health.com/
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    Chronic

    Kidney

    Disease

    Diagnosis

    End Stage

    Kidney

    Disease

    Diagnosis

    DIALYSIS

    HAEMODIALYSIS

    PERITONEAL DIALYSIS

    TRANSPLANTATION

    PALLIATIVE CARESTAGE 1 & 2

    Proteinuria plus

    eGFR 60+

    (to determine eGFR

    over 60, hand

    calculate GFR using

    Cockcroft-Gault

    formula)

    STAGE 3

    eGFR 30-59

    ml/min

    MODERATE

    KIDNEY

    DAMAGE

    Proteinuria

    Care plan

    STAGE 5

    eGFR

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    Peritoneal Dialysis

    A form of renal replacement therapy forpatients with end stage kidney disease

    Endeavours to replace some of the functions

    of the kidney such as Removing waste products

    Removing excess fluid

    Correcting acid/base imbalances

    Correcting electrolyte imbalances

    High maintenance form of therapy requiringmeticulous compliance and effort on part ofpatient

    www.agingdiscodiva.com

    http://www.agingdiscodiva.com/http://www.agingdiscodiva.com/
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    IDEAL BODY WEIGHT

    IBW

    Normotensive (Good BP) 120/70

    No signs and symptoms of overload or

    dehydration

    Set by:

    Home Training Staff Royal Perth Hospital

    Renal Doctor

    Dialysis Staff KSDC

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    FLUID ASSESSMENT

    Blood pressure

    Weight

    Chest, SaO2, SOB

    OedemaAnkles

    Back

    Facial

    JVP Skin tugor

    Symptoms

    Nausea,vomiting

    Diarrhoea

    Dizziness

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    FLUID RESTRICTION

    800 1000 mls per day

    Weigh patient (will be required daily

    SAME SCALES and document

    which ones)

    In hospital, remove jug

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    Peritoneal Dialysis

    Involves the passage of solutes and water

    across a membrane that separates two fluid

    containing compartments-blood and dialysate

    During dialysis 3 transport processes occursimultaneously

    Diffusion

    Ultrafiltration

    Absorption

    http://www.dialyse-45.net/int/info/techniques.htm

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    Peritoneal Dialysis

    2 types

    CAPDcontinuous ambulatory peritoneal

    dialysis Involves on average 4 dwells per day of 4-8

    hours of 22.5L each

    APDautomated peritoneal dialysis

    Involves 3-10 exchanges overnight of varyingamounts

    Usually but not always a daytime dwell

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    Peritoneal Dialysis

    Anatomy

    Serosal membrane lining the gut

    Thought to be the same as the body surface

    areausually 1-2 m2

    in adult 2 partsvisceral peritoneum lining the organs

    (80% or the peritoneal surface area and theparietal peritoneum lining the walls of theabdominal cavity)

    Peritoneal blood flow cant be measured butindirectly estimated to be between 50-100mls/min

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    Peritoneal Dialysis

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    Horizontal disposition of the peritoneum in the lower part of the abdomen.

    www.theodora.com/anatomy/the_abdomen.html

    http://www.theodora.com/anatomy/the_abdomen.htmlhttp://www.theodora.com/anatomy/the_abdomen.html
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    Peritoneal Dialysis

    Visceral peritoneum blood supply is from the

    superior mesenteric with venous drainage

    from the portal system

    Parietal peritoneum blood supply is from thelumbar, intercostal and epigastric arteries

    while the venous drainage is via the IVC

    Main lymphatic drainage is via stomata in the

    diaphragmatic peritoneum which drain into

    the right lymphatic duct

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    Three pore model

    Peritoneal capillary is the critical barrier toperitoneal transport

    Movement of solute and water movement

    across the capillary is mediated by pores ofthree different sizes

    Large pores 20-40 nmprotein transport

    Small pores 4-6nmsmall solutes eg urea,

    creatinine, sodium, potassium, water Ultrapores (aquaporins)

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    Three pore model of peritoneal

    transport

    Kidney International

    ISSN: 0085-2538EISSN: 1523-1755

    2009 International Society of Nephrology

    http://www.isn-online.org/http://www.isn-online.org/
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    Peritoneal Transport - Diffusion

    Diffusionuraemic solutes and potassiumdiffuse from peritoneal capillary blood into thedialysate. Glucose, lactate, bicarbonate andcalcium diffuse in the opposite direction.

    Diffusion depends on concentration gradient(maximal at the start), effective peritonealsurface area, intrinsic peritoneal membraneresistance, molecular weight of the solute (egsmall molecules like urea, diffuse morerapidly than larger molecules such ascreatinine)

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    Diffusion

    www.indiana.edu/.../lecture/lecnotes/diff.html

    http://www.indiana.edu/.../lecture/lecnotes/diff.htmlhttp://www.indiana.edu/.../lecture/lecnotes/diff.html
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    Peritoneal Transport - Ultrafiltration

    Occurs as a consequence of the osmotic gradient between thehypertonic dialysate and the relatively hypotonic peritonealcapillary blood

    Driven by high concentration of glucose in dialysate

    Depends on;

    concentration gradient of the osmotic agent (glucose) peritoneal surface area

    hydraulic conductance of the peritoneal membrane

    reflection coefficient for the osmotic agent (how effectivelythe osmotic agent diffuses out of the dialysate into theperitoneal capillaries (0-1 is normalthe lower the value the

    faster the osmotic gradient is lost. Gluc is 0.3 as opposed toicodextrin which is close to 1)).

    Hydrostatic pressure gradientcap press around 20mmversus intraperitoneal pressure around 7mm Hg whichfavours ultrafiltration

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    Ultrafiltration

    http://www.dialysistips.com/principles.html

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    Peritoneal TransportUltrafiltration 2

    Depends on; Oncotic pressure gradient which acts to keep fluid in

    blood, opposing ultrafiltration (low inhypoalbuminaemic patients so ultrafiltration tends tobe high)

    Sievingoccurs when solute moves along with wateracross a semipermeable membrane by convection butsome of the solute is held backsieved. The soluteconcentration in the ultrafiltrate that has passed

    through the membrane is lower than the sourcesolution. Different solutes sieve differently rangingfrom 0 (complete sieving) to 1 (no sieving)

    Other osmotic agents such as icodextrin with a largereflection coefficient so ultrafiltration is sustained

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    Ultrafiltration

    http://www.advancedrenaleducation.com/PeritonealDialysis/Ultrafiltration/HowtoAchieveAdequatePDUF/tabid/229/Default.aspx

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    Peritoneal TransportFluid

    Absorption

    Occurs via the lymphatics at constant rate

    Typical values for peritoneal fluid absorption

    are 1-2 mls/minute

    Affected by intraperitoneal hydrostaticpressure

    Effectiveness of lymphatics

    http://www.fmc-ag.com/gb_2006/en/05/glossar.html

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    Peritonitis

    Peritoneal Dialysis is a great form of renal

    replacement therapy

    Peritonitis is a significant complication

    Incidence peritonitis episodes varies from 1/9patient-months to 1/53 patient-months

    (Grunberg 2005; Kawaguchi 1999)

    Our figures pending but are likely to be on

    the lower end of the scale

    http://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.html
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    Peritonitis in PD pts

    Risk Factors

    Diabetes

    Non caucasian

    Obesity Temperate climate

    Depression

    Possibly the peritoneal dialysis

    modality but not proven(Huang 2001; Oo 2005).

    http://www.diabetesandrelatedhealthissues

    .com/

    http://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.html
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    Peritonitis in PD pts

    Significant morbidity

    Some mortality - It is estimated that PD-

    associated peritonitis results in death in 6%

    of affected patients (Troidle 2006).

    gymsoap.com

    http://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.html
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    Peritonitis in PD pts

    Catheter removal may become necessary ifpt is not responding to antibiotics or ifinfection is fungal. May be temporary orpermanent

    Ultrafiltration failure can occur both acutelydue to increases in capillary permeability(Ates 2000; Smit 2004) and in the longerterm resulting in technique failure (Coles2000; Davies 1996).

    http://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://images.google.com.au/imgres?imgurl=http://www.walkeravenue.com/Health/Kidneys/images_kidneys/Patient_on_peritoneal_Dialysis..png&imgrefurl=http://www.walkeravenue.com/Health/Kidneys/preesrd_education.htm&usg=__pzDOUt8Ria3NEyTSXmUuPHDpAys=&h=270&w=240&sz=16&hl=en&start=2&um=1&tbnid=j2paqOfYjG2_dM:&tbnh=113&tbnw=100&prev=/images%253Fq%253Dperitoneal%252Bdialysis%252Bcatheter%2526hl%253Den%2526sa%253DX%2526um%253D1http://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.htmlhttp://mrw.interscience.wiley.com/cochrane/clsysrev/articles/CD005284/bibliography.html
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    Pathogenesis

    1. Potential routes of infection

    Intraluminalimproper technique; access tobacteria via the catheter lumen

    Periluminalbacteria present on skin surfaceenter the peritoneal cavity via the cathetertract

    Transmuralbacteria of intestinal originmigrate through the bowel wall

    Haematogenousperitoneum seeded via theblood stream

    Transvaginal - ??

    http://images.google.com.au/imgres?imgurl=http://www.medionics.com/cather01.jpg&imgrefurl=http://www.medionics.com/catheter.htm&usg=__Ae0nif5kpqg2YbaKTBdYZYjlmOE=&h=480&w=400&sz=29&hl=en&start=5&um=1&tbnid=_nJt38SkW3INeM:&tbnh=129&tbnw=108&prev=/images%253Fq%253Dperitoneal%252Bdialysis%252Bcatheter%2526hl%253Den%2526sa%253DX%2526um%253D1
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    Pathogenesis

    2. Bacteria laden plaquethe intraperitoneal portionof the catheter is covered with a bacteria ladenplaque - ? Role in pathogenesis of peritonitis

    3. Host defencesperitoneal leucocytes critical in

    combating bacteria that have entered theperitoneum. Affected by

    A. dialysis solution and phhypertonic solutioninhibits activity

    B. Calcium levelslow calcium in dialysate inhibits

    activity Peritoneal IgG levelslow levels inhibit activity

    HIVlittle known effect

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    Aetiology

    Staph aureus

    Coag neg staph (S.Epidermidis)

    E coli

    Pseudomonas

    Sternotropomonas

    Candida

    Atypical TB

    http://images.google.com.au/imgres?imgurl=http://asymptotia.com/wp-images/2008/08/e_coli.jpg&imgrefurl=http://asymptotia.com/category/science/biology/&usg=__RRTS6QDOvMvQ6Bid0HmnJTI7I88=&h=599&w=600&sz=67&hl=en&start=3&um=1&tbnid=dIOpq8M9nmCBdM:&tbnh=135&tbnw=135&prev=/images%253Fq%253De%252Bcoli%2526hl%253Den%2526um%253D1http://swampie.files.wordpress.com/2008/02/staphylococcus-aureus.jpg
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    Diagnosis

    2 of the following 3 conditions

    Symptoms and signs of peritoneal

    inflammation (pain, tenderness, guarding,

    rebound) Cloudy peritoneal fluid with increased white

    cell count (specifically neutrophils)

    Demonstration of bacteria on gram stain or

    culture

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    Diagnosissymptoms and signs

    Abdo pain most common but in a PD pt

    suspect peritonitis if general malaise,

    nausea, vomiting or diarrhoea

    Dont be blinded by the PD These pts get other pathology

    EG. Strangulated hernia, withdrawal from

    steroids (if they stop taking meds suddenly

    and they happen to be on steroids), rupturedviscus, ulcers, perforations etc

    EXAMINE THE PATIENT

    http://images.google.com.au/imgres?imgurl=http://www.pain-free.eu/userdata/Image/pain_free/Abdominal%252520pain_3811288.jpg&imgrefurl=http://www.pain-free.eu/Abdominal%252520Pain&usg=__p1msd23yoqHs-4Tb3I-IWj4jLP0=&h=512&w=384&sz=118&hl=en&start=2&um=1&tbnid=Bt9s55cQzugywM:&tbnh=131&tbnw=98&prev=/images%253Fq%253Dabdo%252Bpain%2526hl%253Den%2526um%253D1
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    Diagnosissymptoms and signs

    PercentageSymptoms

    Abdo pain 95

    Nausea and vomiting 30

    Fever 30

    Chills 20

    Constipation or diarrhoea 15

    Signs

    Cloudy peritoneal fluid 99

    Abdo tenderness 80

    Rebound tenderness 10-50Increased temperature 33

    Blood leucocytosis 25

    CRP 100 but can be delayed

    Daugirdas JT et al 2007 p 419

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    Peritoneal fluid culture

    Send the whole bag

    Label it (preferable with textalabel can sweat off)

    Let the lab know it is coming

    Ask for urgent gram stain and cell count and ask this

    to be telephoned to you. Be aware that the gramstain may be negative in 50% of cases of subsequentculture proven peritonitis

    Also ask for M/C/S and fungal cultures

    Follow up the culture Do a full septic workup each timeincluding blood

    cultures

    http://images.google.com.au/imgres?imgurl=http://www.diabetesmonitor.com/images/dialys.gif&imgrefurl=http://www.diabetesmonitor.com/b120.htm&usg=__H_l97wjRow--D2Rm8Ait6oCqJXM=&h=274&w=252&sz=12&hl=en&start=65&um=1&tbnid=0bp7SVgbuiBJyM:&tbnh=113&tbnw=104&prev=/images%253Fq%253Dperitoneal%252Bdialysis%252Bbag%2526ndsp%253D18%2526hl%253Den%2526sa%253DN%2526start%253D54%2526um%253D1
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    Peritonitis

    Common things occur commonly and

    peritonitis is unfortunately common in our

    population of PD patients

    BUT Dont lose sight of the bigger picture and

    these patients can suffer from any other

    pathologyalways keep an open mind

    http://www.youthwithanopenmind.com/images/openmind_print_logo.gif
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    Peritonitis Management

    Broad spectrum coverage

    Vancomycin (2.5g if more than 60kg / 2 g if 60kg orless)

    Gentamicin (200mg if more than 60kg / 140mg if 60kg

    or less) IP is better than IV (confirmed on large Cochrane

    review April 2009)

    Await culture. If gram positive, then repeat the vancdose in 1 week. If gram negative then usually

    ceftriaxone 1g intraperitoneally daily for 14 days Things to note; if pseudomonas tube is very often lost.

    May need to consider adding a second antibiotic suchas daily ciprofloxacin

    PERITONITIS MANAGEMENT

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    Initial symptoms may include;

    diarrhoea, vomiting, nausea,

    abdominal pain, mental confusion or feeling unwell

    COLLECT DRAINED BAG

    *Seeadditional resources (pink section) for drainage instructions* Send entirebag for urgent MC&S (including WCC differential) and Fungal elements. ****

    Must cc KRSS ****

    Intraperitoneal (IP) Antibiotics (see Procedures)Give BOTH

    Gentamycin 160mgs if 60kgs or less

    (gramve organisms) 200mg if > 60kgs

    AND

    Vancomycin - 2gms if 60kgs or less

    (gram +ve organisms) 2.5grams if > 60kgs

    Give both in a 2L 2.3%bag

    Dwell in the abdomen for minimum 6 hours(Consult microbiologist if Vanc or Gent allergy)

    must be able to read newspaper print through the

    bag

    LOOK FOR OTHER CAUSES

    Call PD Coordinator or

    Renal GP

    ATTENTION:Vanc and Gent provide some coverage while

    awaiting sensitivities.****Further antibiotics WILL be required ****

    If Staph/gram +ve, give IP Vancomicin again on Day 7

    If gram negative, refer to sensitivities, but

    usually 14 days of IP Ceftriaxone1gmYOU MUSTfollow up the MC & S 48 hours after initial IP treatment.

    A WCC > 100 confirms peritonitis.If the patient is not improving within 24 hrs, or any other concerns, contact PD coordinator

    CLEAR BAG CLOUDY BAG

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    Peritonitis Mx

    CAPD/APD

    Drain abdomen and send bag off with path

    request as above

    Change the transfer set completely followingusual aseptic techniques

    Load 2.3% 2 litre dialysate bag (use 1.5% bag

    if patient hypotensive) with Vancomycin and

    Gentamicin as per above guideline Infuse bag into peritoneum

    6 hour dwell

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    Peritonitisfungal infection

    If fungal organisms are seen on gram stain,

    or cultured, it is unlikely you will be able to

    save the tube

    Once the tube is colonized, the only cure isremoval of tube, peritoneal rest (pt on

    Haemodialysis for a few months) and then

    start from scratch

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    Peritonitis

    If you think that the patient has peritonitis but youthink they have life threatening sepsis eghypotension, tachycardia, fever (or no fever as maynot be able to mount an immune response), alteredconscious state etc, your patient is likely to require IV

    broad spectrum antibiotics. Ring the microbiologiston call. Dont wait to get IP regime in. That can go inwhile you are making calls and obtaining results.

    Antibiotics must be given within 1 hour ofpresentationit is an emergency.

    I usually ring SCGH as they maintain a 24 hourconsultant micro roster 93463333 but remember allour patients who require transfer must go to RoyalPerth Hospital as they are under the RPH consultant

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    Peritonitis

    Patients can have dual pathology

    Eg it is not uncommon for patients to have

    peritonitis, delay treatment, splint their

    abdomen and get pneumonia. This needs tobe treated as per the normal guidelines for

    pneumonia

    http://images.google.com.au/imgres?imgurl=http://www.med-ed.virginia.edu/courses/rad/cxr/web%252520images/rul-pneumonia-pa.jpg&imgrefurl=http://www.med-ed.virginia.edu/courses/rad/cxr/pathology3chest.html&usg=__BmCnP3nxpkWKlbnd5ognWKNQVQg=&h=450&w=400&sz=19&hl=en&start=2&um=1&tbnid=VQ6GGqACl7HlpM:&tbnh=127&tbnw=113&prev=/images%253Fq%253Dpneumonia%2526hl%253Den%2526um%253D1
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    Peritonitis

    Additives to bags

    Vancomycin, aminoglycosides andcephalosporins are safe to mix in the samebag

    Aminoglycosides are incompatible withpenicillins

    Vancomycin is stable for 28 days in dialysate(normal room temp)

    Cefazolin is stable for 8 days

    Gentamicin is stable for 14 days

    Heparin added decreases duration of stability

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    Peritonitis

    Often get formation of fibrin clots which

    increases risk of catheter block

    May need to add 500units of heparin to 1 or 2

    bags a day until fibrin clots decrease Constipation is commonyou may need to

    stop the calcium based phosphate binders

    temporarily but better off using aperients

    early and preventing the need to alter routinemeds

    http://images.google.com.au/imgres?imgurl=http://tell.fll.purdue.edu/JapanProj/FLClipart/Medical/constipation.gif&imgrefurl=http://tell.fll.purdue.edu/JapanProj/FLClipart/Medical.html&usg=__AvCBbR8wMo-cqxSEMPJ5YJZCHTA=&h=1355&w=1782&sz=35&hl=en&start=6&um=1&tbnid=BFROXmxKGYw-zM:&tbnh=114&tbnw=150&prev=/images%253Fq%253Dconstipation%2526hl%253Den%2526um%253D1
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    Peritonitis

    Fluid regimes

    Depends whether patient is overloaded orunderloaded

    Can usually continue normal regime but tailor to

    patient If BP low, use 1.5% bags x 4 a day

    If BP high use 2.3% bags, minimum of 4 a day

    Aim for BP 120/

    APD pts can continue on APD or if needed canconvert temporarily to CAPDin Broome withresources this should not be necessary

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    Peritonitis

    Can get changes in the permeability of the peritoneal

    membrane

    Permeability to water, glucose and proteins is

    increased

    Rapid glucose absorption from the dialysis solutionreduces amount of ultrafiltration and can result in fluid

    overload

    May need high glucose concentration dialysate with

    shorter dwells Hyperglycaemia is common

    Protein loss is increased in peritonitis so patients will

    need high protein supplements

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    Peritonitis

    Dont forget secondary causes of peritonitis

    Perforated gastric or duodenal ulcer

    Pancreatitis

    Appendicitis Diverticulitis

    PID

    Talk to the surgeon if you are not sure

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    Peritonitis

    You dont necessarily have to admit the

    patient

    Admission dictated by symptoms and distress

    and often social circumstances up here

    blogs.southshorenow.ca/louise/cms.ich.ucl.ac.uk/website/imagebank/images

    http://blogs.southshorenow.ca/louise/http://cms.ich.ucl.ac.uk/website/imagebank/imageshttp://cms.ich.ucl.ac.uk/website/imagebank/imageshttp://blogs.southshorenow.ca/louise/
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    Peritonitis - bugs

    StaphVancomycin and repeat in 1 week

    Patients should have nasal carriage treated withmupirocin bd for 5 days and then once a week of bdfor 5 days once a month

    Gram NegsIP Ceftriaxone for 2 weeks andconsider repeating the dose of gentamicin after aweek or adding oral ciprofloxacin to the regime

    Pseudomonas difficult to treat

    Sternotrophomonasusually requires 2 antibiotics

    and usually for 4 weeks Campylobacter not that commonresponds to

    gentamicin

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    Peritonitis

    Culture negative disease

    If cell count less than 50 x 106unlikely toperitonitis

    If higher white cell count, then repeat empirictherapy

    Make sure lab is doing cultures for AFBs andfungus

    If not improving consider legionella,

    campylobacter, ureaplama, mycoplasma,enteroviruses, fungus, histoplasmacapsulatum

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    Peritonitis

    Fungal peritonitis

    Predisposing factors

    Prior antibiotic use especially if not full treatment

    Immunosuppressive therapy HIV

    Malnutrition

    Low albumin

    Diabetes

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    Peritonitis

    Fungal peritonitis

    We tend to try and save the tube by giving

    antifungals but guidelines recommend prompt

    removal of catheter, conversion tohaemodialysis for a few weeks and then start

    from scratch

    Penetration of antifungals to peritoneum other

    than with IP administration, is poor

    http://images.google.com.au/imgres?imgurl=http://www.kaiscience.com/thumbimage.php%253Fid%253D79&imgrefurl=http://www.kaiscience.com/ph_79-Soil_fungus_condiophore_and_conidia_Trichoderma_sp._Copyright_Dennis_Kunkel_Microscopy&usg=__e64sTlCXU05-V6zgOTb1b3hMiDQ=&h=353&w=300&sz=25&hl=en&start=2&um=1&tbnid=i5lgwUzM0td0QM:&tbnh=121&tbnw=103&prev=/images%253Fq%253Dfungus%252Bmicroscopy%2526hl%253Den%2526um%253D1
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    Peritonitis

    Refractory disease

    Defined as disease that is treated with

    appropriate antibiotics for 5 days without

    improvement Catheter removal necessary to reduce

    morbidity and preserve peritoneum

    Increased with gram neg bugs

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    Peritonitis

    Relapsing disease

    Peritonitis with the same organism within 4 weeks of stoppingtherapy

    Usually Staph epidermidis or a gram negative organism

    If pseudomonas or gram negatives, remove the catheter

    If staph, may be able to rescue with repeat vancomycin weeklyfor a month or may be able to remove the tube andsimultaneously insert a new tube (as opposed to any otherorganism where a 2 month peritoneal rest is required)

    Sometimes can use urokinase to strip the biofilm (bacteria

    entrapped in fibrin in the peritoneal membrane) in relapsingdiseaselast resort but worth a go

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    Peritonitis

    20% of episodes temporally associated with

    exit site and tunnel infections (Piraino et al

    2005)

    Treat exit site infections if red and purulent Swab it

    Start Flucloxacillin empirically and change or

    add ciprofloxacin if gram neg

    Exit sites are another whole topic

    http://images.google.com.au/imgres?imgurl=http://userweb.port.ac.uk/~norrismj/antimicrobial_agents/images/flucloxacillin.jpg&imgrefurl=http://userweb.port.ac.uk/~norrismj/antimicrobial_agents/Penicillins.html&usg=__NEub6FBelfkHq1UjbvLBqOviCfc=&h=192&w=256&sz=8&hl=en&start=6&um=1&tbnid=2slNyhkigq4NjM:&tbnh=83&tbnw=111&prev=/images%253Fq%253Dflucloxacillin%2526hl%253Den%2526um%253D1
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    Peritonitis

    Prevention

    Good technique

    Hygiene

    Mupirocin Exit site care

    Anchor tape

    http://images.google.com.au/imgres?imgurl=http://www.homedialysis.org/images/resources/tom/presternal2.jpg&imgrefurl=http://www.homedialysis.org/resources/tom/200507/&usg=__d63G_ug_2drZP4ljNbQ4eVUxMKM=&h=329&w=219&sz=17&hl=en&start=2&um=1&tbnid=uaKvWtG2nO5aoM:&tbnh=119&tbnw=79&prev=/images%253Fq%253Dsite:www.homedialysis.org%252Banchor%252Btape%252Bin%252Bperitoneal%252Bdialysis%2526hl%253Den%2526um%253D1
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    Cochrane Review 2009

    Implications for practiceAt the present time broad spectrum antibiotics should be initiated at thetime a diagnosis of peritonitis is made. When choosing antibiotics theside-effect profile, local drug resistance patterns and previous antibioticuse and infection history in the individual concerned should beconsidered. In cases of recurrent peritonitis dialysis catheters shouldbe removed rather than using intraperitoneal urokinase.

    Currently available evidence from RCTs is inadequate in many areas

    of clinical practice important in the management of PD-associatedperitonitis. This is a limiting factor in the provision of definitivetreatment guidelines.

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    Cochrane Review 2009

    Implications for researchFurther studies are required to establish the most effective treatment for peritoneal dialysis-associated peritonitis. An essential feature of such studies is inclusion of enough patients toensure adequate power to assess meaningful long and short term outcomes. Short termoutcomes should extend beyond whether cure is achieved without catheter removal, forexample duration of systemic inflammation. Study of long-term outcomes should includepermanent transfer to haemodialysis, development of ultrafiltration failure patient death andlate recurrent episodes of peritonitis beyond four weeks from the original episode.

    Specific interventions that would be of value include early versus late catheter removal.Studies designed to study infections due to specific organisms would also be valuable. Anexample is a study of glycopeptide versus cephalosporin therapy in peritonitis due tocoagulase negative Staphylococcal species. The majority of studies have included patientson CAPD rather than APD hence studies designed to test the efficacy of antibiotics in APDare required. This is particularly applicable to studies of intermittent versus continuousdosing when cycler dwell times may well influence pharmacokinetics.Future research should be conducted using standard definitions, with inclusion ofinformation about factors that may influence the response to therapy such as prophylaxis

    regimens and dialysis solutions used. Current ISPD guidelines provide a comprehensive listof requirements for future studies that should be referred to when designing studies.

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    Take home points

    Have a high index of suspicion

    Use the remote area manual

    Always let KRSS know of episode

    Copy all results to KRSS

    Dont hesitate to ask if you are not sure KRSS team, KRSS GP, Renal GP,

    Nephrologist

    www.learningradiology.com

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    Thank you

    Questions

    [email protected]