H I V/ T B CO INFECTION A CASE PRESENTATION - Presentation Transcript
HIV/TB Co infection: A case presentation Dr Farouk Muhammad Dayyab ( [email_address] ) Government House Clinic Jalingo 18th February, 2009
Synopsis
History
Examination
Assessment
Management plan
Investigation results
Analysis of the History
Analysis of Examination findings
Comments on the management plan
Conclusion
Reference
History
I am presenting Mr M.K. Unit No 18210, a 32yr old male muslim applicant from Magami quarters who presented on the 24th september 2007 at this clinic with 1 week history of fever, cough and diarrhoea. These symptoms have been on and off prior to that episode.
His wife died of chronic illness.
Examination
A chronically ill looking young man wasted afebrile, anicteric, acyanosed not dehydrated and no pedal edema. No peripheral lymphadenopathy.
Assessment
PTB R/O RVI
Management Plan
Pretest councelling for RVS
CD4 cell count, E/U/CR, LFT
Sputum AFB X 3, CXR
Tabs Ciprofloxacin, Metronidazole and Fansidar.
Investigation results
Seropositive
AFB X 3 ( - ve )
CXR- Suggestive
CD4 count – 60
PCV – 34%
LFT – normal
U/E/Cr – normal
Plan
Commence on DOTS and HAART
To Substitute Nevirapine with Efavirenz
Analysis of History Missing Aspects
Systemic review
Past Medical History
Drug History
*Family and Social History
Why Systemic Review in this HIV/TB Patient?
HIV is a Multi-Systemic Disease
HIV/TB Patients are more likely to have extra-pulmonary Tuberculosis .....Extrapulmonary TB occurs in 70% of HIV related TB cases when CD4 count is less than 100.(Francis J Curry National TB centre USA)
Why Systemic Review in this HIV/TB Patient? the chest
History of cough, hemoptysis, dyspnoea, chest pain, stridor and hoarseness of the voice
BECAUSE:
PTB
RVI: PCP, CMV Pneumonia, Fungal chest infections(Histoplasmosis, aspergillosis, blastomycosis), Kaposis sarcoma of the lungs, lymphoid interstitial pneumonitis, lymphomas
Why Systemic Review in this HIV/TB Patient? the git
History of abdominal pain, nausea, vomitting, loss of appetite, weight loss, difficulty swallowing, haematemesis, abdominal distention, constipation, diarrhoea, anorexia, regurgitation, jaundice, haematokisea, melaena, anal protrusion, hiccups, steatorrhoea, pruritus.
BECAUSE:
TB: Abdominal TB(TB Ileitis, peritonitis and adenitis)
RVI:Ascending cholangitis, chronic diarrhoea from opportunistic infections(Cryptosporidium, isospora belli, microsporidium),HIV enteropathy, giardia lamblia,E. Histolitica, E. Fragilis, Shigella, Adeno virus and rota virus, Anorectal ca., fistula in ano, anal fissures.
Why Systemic Review in this HIV/TB Patient? the cvs
History of dyspnoea, PND, orthopnoea, cough,hemoptysis, fatique, syncopal attack, intermittent claudication, pedal edema, symptoms of pericarditis(pain behind the left sternal border aggravated by sneezing, swallowing and deep breathing)
BECAUSE:
TB: TB pericarditis
RVI: HIV cardiomyopathy, vasculitis.
Why Systemic Review in this HIV/TB Patient? the cns
History of headache, tremors, nervousness, excitability, fainting attacks, pits, irrational behaviour, paralysis(hemi/para paresis or phlegia), sensory or hearing disturbances, change in vision, smell or taste.
Past history of hospital admissions and blood transfusion.
Any history of DM which predisposes to TB
Why Drug History in this HIV/TB Patient?
BECAUSE:
Long term steroid use predisposed to TB
To check interactions with HIV/TB drugs to be given.
Past history of use of anti TB drugs
Why Family and Social History in this HIV/TB Patient?
BECAUSE:
Sexual history: promiscuity, STIs
Marital History: Previous and Present marriages
Alcohol consumption predisposes to TB
Analysis of Examination Findings
?? Findings on chest examination not recorded despite chest symptoms.
Looking for dyspnoea(Normal:14-16cpm), signs of consolidation(diminished chest expansion,increased tactile fremitus, bronchial breathsounds, crepitations, increased vocal resonance, pleural rub)
Other systems should be examined based on presence of symptoms in them during history taking.
Comments on the Management Plan: the negative sputum AFB in this HIV/TB Patient
Sputum AFB detects 60% of all new TB infections and as few as 20% to 35% in HIV/TB infections. Therefore sputum negativity does not exclude the presence of disease( HIV/TB coinfection: Basic Facts 2007)
Newer tests include: Sputum inoculation, PCR, Broncho alveolar lavage, Blood medium inoculation, Determination of serum Ag and Ab (Pubmed: Probl Tuberk Bolezn 2007(11):225 )
Comments on the Management Plan: the CXR
The details of the chest XR findings in this patient are not recorded in the case notes but were reported as suggestive of PTB
CXR findings are CD4 lymphocyte count dependent
Comments on the Management Plan: the CXR
Early HIV disease CD4>500 cell/ul: Typical PTB presentation: Upper lobe infilterates, cavitory changes
Low CD4 count: Lower lobe infilterates, intrathoracic adenopathy, widespread reticulonodular lesions affecting all zones
HIV infected patients with TB may have a normal chest radiograph.( Francis J Curry National TB centre USA )
Comments on the Management Plan: the LFT, U/E/Cr were within normal limits in this HIV/TB patient
Why LFT, U/E/Cr?
Metabolism of drugs by the liver
Excretion of drugs by the kidney
Both HIV and TB can compromise liver and kidney function
To know the baseline to monitor drug toxicity.
Comments on the Management Plan: Use of Ciprofloxacin in this Patient
Flouroquinolone use delays TB diagnosis in pneumonia patients.( infectious-diseases.jwatch.org )
19% of patients thought to have community acquired pneumonia turn out to have TB.( Kenyan Study )
Use of moxifloxacin alone even for as short as 7 days leads to emergence of resistance to an important 2nd line agent that reduces the duration of treatment of TB to 4 months when used with other antiTB drugs( Pubmed.org )
Comments on the Management Plan: Use of Fansidar in this patient.
Monotherapy for malaria is no longer recommended by WHO and the Federal Ministry of Health.( Training manual for management of malaria in Nigeria )
Comments on the Management Plan: Antihelminths not given to this HIV/TB patient
Eradication of helminthic infection decreases HIV plasma viral load in dually infected people in a study conducted in Addis Ababa . ( NLM Gateway : A service of the U.S. National Institutes of Health )
Comments on the Management Plan: Patient was commenced on DOTS and HAART substituting Nevirapine with Efavirenz
According to the 2006 WHO recommendations for individuals with HIV/TB coinfection , wether to start DOTS or HAART is based on the CD4 cell count.
4 Categories:
CD4<200cells/ul
CD4 200 – 350 cells/ul
CD4>350 cells/ul
CD4 not available.
Comments on the Management Plan: Patient was commenced on DOTS and HAART substituting Nevirapine with Efavirenz
CD4<200cells/ul
Start TB treatment. Start ART as soon as TB treatment is tolerated.(between 2 weeks and 2 months)
EFV regimen is used. EFV is contraindicated in pregnant women or women of child bearing potential without effective contraception.
Comments on the Management Plan: Patient was commenced on DOTS and HAART substituting Nevirapine with Efavirenz
CD4 between 200 – 350 cells/ul
Start TB treatment for the 2 month intensive phase then commence on ART
If patient is severely compromised start the ART earlier.
Comments on the Management Plan: Patient was commenced on DOTS and HAART substituting Nevirapine with Efavirenz
CD4>350 cells/ul
1. Start TB treatment, Defer ART.
Comments on the Management Plan: Patient was commenced on DOTS and HAART substituting Nevirapine with Efavirenz
CD4 not available : start TB treatment, consider ART.( the internet journal of pulmonary medicine. www.ispub.com )
Conclusion
HIV/TB co infection will continue to be challenging to both health care providers researchers and patients.
Selected references
Davidsons principles and practice of medicine 19th edition
Hutchisons clinical methods 21st edition
Training manual for management of malaria in nigeria
Oxford handbook of clinical medicine
Francis J Curry National TB centre USA www.nationaltbcentre.edu
HIV/TB coinfection Basic Facts 2007
Pubmed: probl Tuberk Bolezn 2007(11):225
The internet journal of pulmonary medicine. www.ispub.com
NLM Gateway : A service of the U.S. National Institutes of Health
this case presentation demonstrates the need for sy more
this case presentation demonstrates the need for systemic review during history taking in patients with HIV. more so in patients coinfected with TB less
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