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BMC Gastroenterology

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Hospital-acquired invasive pulmonary aspergillosis in patients with hepatic failure

  • Dan Li1, 2,
  • Liang Chen1,
  • Xian Ding1,
  • Ran Tao1,
  • Yong Xin Zhang1, 2 and
  • Jie Fei Wang1Email author
Contributed equally
BMC Gastroenterology20088:32

https://doi.org/10.1186/1471-230X-8-32

Received: 11 July 2007

Accepted: 31 July 2008

Published: 31 July 2008

Abstract

Background

Invasive pulmonary aspergillosis (IPA) is a rapid, progressive, fatal disease that occurs mostly in immunocompromised patients. Patients with severe liver disease are at a heightened risk for infections. Little is known about the clinical presentation including predisposing factors and treatment of IPA in patients with hepatic failure.

Methods

Medical records of patients with hepatic failure between November 2005 and February 2007 were reviewed for lung infection. Nine medical records of definitive diagnosis of IPA and three of probable IPA were identified.

Results

The main predisposing factors were found to be prolonged antibiotic therapy and steroid exposure. Clinical signs and radiological findings were non-specific and atypical. Timely use of caspofungin was found to reduce the mortality due to the disease.

Conclusion

A high index of suspicion is required for early IPA diagnosis in patients with hepatic failure.

Background

Aspergillus is a saprophytic filamentous fungus widespread in the environment, and has attracted attention in recent years for its association with various clinical conditions, depending essentially on the host's immunological status [1, 2]. In immunocompetent patients, pulmonary aspergilloma, allergic aspergillus tracheobronchitis and obstructive bronchial aspergillosis are described. In immunocompromised patients, it can invade the pulmonary parenchyma, resulting in invasive pulmonary aspergillosis (IPA), a disease with high lethality [14].

Patients with severe liver disease are at a higher risk for various infections [5, 6]. Little is known about the clinical presentation and treatment of IPA in patients with hepatic failure. The available literature is confined to a few case reports or series of reports only, with data mainly based on autopsy reports. The aim of the present study was to determine the clinical presentation and outcome of aspergillosis in patients with hepatic failure. In contrast to other reports, only one out of 12 patients diagnosed with IPA died. We have analyzed predisposing factors and treatment regimen, in an effort to determine the basis for low mortality in our patient cohort.

Methods

This was a retrospective study, conducted in Shanghai Public Health Clinical Center, a tertiary care hospital specializing in infectious diseases, especially hepatic diseases. Between November 2005 and February 2007, a total of 276 patients with hepatic failure were admitted. Medical and microbiological records as well as the chest radiographic imaging of all patients with hepatic failure and accompanying lung infection were reviewed. Patients' demography, duration of admission, predisposing factors, clinical features, investigations, treatment and outcome were noted.

Standardized criteria from European Organization for Research and Treatment of Cancer and the Mycosis Study Group of the National Institute of Allergy and Infectious Disease (EORTC/MSG) [7] were applied for the diagnosis of definite and probable IPA. Definite IPA was defined as the demonstration of filamentous fungi by microscopy from tissue samples with or without a positive culture for Aspergillus. Probable IPA was defined as the demonstration of filamentous fungi compatible with the morphology of Aspergillus and/or a positive culture for Aspergillus from bronchoalveolar lavage (BAL) specimen in patients in conjunction with 1 major (halo or "air crescent" on computed tomography (CT) scan) or at least two minor (signs of lower respiratory tract infection, pleural rub, and presence of any new infiltrate in a patient who did not fulfill the major criterion but for whom no alternative diagnosis was available) clinical findings. IPA developing after 48 hours of hospital admission and before the clinical diagnosis of fungal infection was considered nosocomial; otherwise, the fungal infection was regarded as community acquired.

Serological diagnosis, such as galactomannan or β-d-glucan, are not performed in Shanghai Public Health Clinical Center; thoracic CT imaging combined with the patient's condition despite antibiotic treatment was the main approach for preliminary diagnosis of IPA. In brief, appearance of pulmonary consolidation or infiltrate and rapid progression on thoracic CT scan with antibiotic resistant fever in the appropriate host setting was diagnosed as suspected IPA. Single-bed hospital room was provided for the patient with high index of suspicion of IPA. In patients with pulmonary infiltrates, especially those with diffuse pulmonary infiltrates, fiberoptic bronchoscopy with BAL and/or transbronchial lung biopsy (TBLB) was performed. In patients with focal pulmonary lesions, percutaneous puncture lung biopsy (PPLB) was considered the first-line diagnostic tool. BAL or lung biopsy was performed at the request of the treating physician with informed consent.

Thoracic CT scan was performed early in patients suspected of having IPA, and twice a week for early detection of IPA or preliminary evaluation of antifungal therapy. Results of chest X-ray and thoracic CT scan were described as normal, grand gross attenuation, non-specific infiltrates and consolidation, pleural fluid, nodular lesion(s), halo sign, air-crescent sign, and cavitation. The CT halo sign is described as a surrounding halo of ground glass attenuation surrounding a pulmonary nodule or mass and corresponds to a central fungal nodule surrounded by a rim of hemorrhage and coagulative necrosis. The air-crescent sign is described as a pulmonary cavitation [8].

All continuous data were expressed either as mean and standard deviation (SD), or median and range based on the distribution.

The study was approved by the Research Ethics Committee, Shanghai Public Health Clinical Center, Fudan University.

Results

Examination of the medical records of all 276 patients admitted to Shanghai Public Health Clinical Center with hepatic failure identified 18 patients who had suspected IPA with a negative sputum culture; of these, seven had suspected IPA on admission. Chest CT showed that all patients had a two fold increase in lesion volume within the first three days despite broad spectrum antibiotic treatment. Among the 18 patients, one stopped treatment due to economic constraints; two objected to invasive examination but agreed to antifungal therapy. Six patients underwent BAL; of these, two patients also had TBLB. Lung biopsy was carried out in 12 patients, of which eight were TBLB and four were PPLB. Five patients had a positive BAL culture for Aspergillus, but biopsy did not show any abnormalities in the tracheobronchial tree. Nine of twelve biopsies were histologically positive for Aspergillus, the others were positive for Enterococcus faecium, Cytomegalovirus and Mucor, respectively. Thus, a total of 12 patients were involved in this study, with definitive diagnosis of IPA in 9 and probable IPA in 3 patients. The median time to diagnosis was 8 days (range 1–22 days) after admission. Among the patients who underwent biopsy, nine had no complications, one case had pneumothorax with lung compressed to less than 20% and 2 cases presented with hemoptysis.

All 12 were referral cases; five of them were transferred for deteriorated pneumonia from local hospitals and suspected of IPA at admission. The initial status of all 12 patients at admission is listed in Table 1. The cause of hepatic failure was hepatitis B virus (HBV) infection in eleven patients, and coinfection with HBV and hepatitis delta virus (HDV) in one patient. IPA was nosocomially acquired in all patients, but none of these infections were acquired in the intensive care unit.
Table 1

Demographic features of 12 patients with IPA

Characteristic

Number of patients

Age in years (mean ± S.D.)

41.9 ± 9.5

Males (%)

87.5

Disease onset

 

   Acute hepatic failure

0

   Subacute hepatic failure

3

   Chronic hepatic failure

9

Complications

 

   Hepatic encephalopathy

5

   Hepatorenal syndrome

3

   Spontaneous bacterial peritonitis

3

MELD score (median, range)

30 (22–51)

Antibiotic usage

 

   Duration (days, mean ± S.D.)

23.1 ± 8.6

   One antibiotic

5

   Two antibiotics

4

   Three or more antibiotics

3

Steroid exposure

9

The chief symptoms were mild to moderate fever and decrease in mental function. Eight patients (66.7%) did not have any respiratory symptoms (Table 2). All had non-specific radiological findings. The halo and air-crescent sign were evident in only two patients (Table 2). CT brain scan was performed in six patients who had psychiatric symptoms; one patient was found to have a mass-like low density lesion with a surrounding halo in the right temporal lobe and clinically diagnosed as having encephalic aspergillosis. Clinical features of IPA patients before antifungal treatment are summarized in Table 3.
Table 2

Clinical and laboratory parameters of patients with IPA

Signs or symptoms

Number of patients

   Fever

12

   Cough

3

   Chest pain

0

   Hemoptysis

0

   Crackles

1

Chest X-ray findings

 

   Changes in bilateral lung fields

9

   Bilateral lung fields diffused

2

   Right unilateral lung

2

   Left upper lobe

4

   Halo and air-crescent

2

Laboratory findings

 

   Hemoglobin (g/L, mean ± S.D.)

95.7 ± 15.9

   Leukocyte counts (×10 9/L, mean ± S.D.)

11.6 ± 7.9

   Neutrophils (%, mean ± S.D.)

81.2 ± 6.4

   Thrombocyte count (×109/L, mean ± S.D.)

102.7 ± 69.5

   Total bilirubin (μmol/L, mean ± S.D.)

661.3 ± 189.7

   Prothrombin activity (%, range)

8–26

   HBV viral load (copies/ml, range)

104–107

Table 3

Clinical features of patients with confirmed IPA

Age/gender

Cause of HF

MELD score

Complications of HF

Co-morbid conditions

Outcome

32/M

HBV

37.12

HE

PE

Recovered

44/M

HBV

29.16

HRS

PE

Recovered

38/M

HBV

31.78

HE

AP

Recovered

51/F

HBV

32.66

 

PE

Recovered but paralyzed

64/M

HBV, HDV

35.01

HRS

PE

Recovered

47/M

HBV

 

HE

 

Recovered

39/M

HBV

38.97

SBP, HRS, HE

 

Dead

52/M

HBV

33.14

 

DM

Recovered

41/M

HBV

30.63

 

PE

Recovered

MELD: model for end liver disease; PE: plasma exchange; HF: hepatic failure; HBV: hepatitis B virus; HDV: hepatitis D virus; HE: hepatic encephalopathy; HRS: hepatorenal syndrome; DM: diabetes mellitus; SBP: spontaneous bacterial peritonitis; AP: acute pancreatitis.

All patients received antibiotic therapy and nine patients had steroid exposure before IPA diagnosis (Table 1). Steroids were used as prevention for allergic reactions to plasma, or to decrease persistent hyperbilirubinemia. The maximum amount of steroids administrated was 1.8 gram of methylprednisolone in one patient.

Patients were hospitalized for 15 to 221 days. Six patients were in intensive care unit for ten or more days with APECHE II score range from 17–29, four required noninvasive assisted ventilation, and one died two days after definite diagnosis.

The median time from suspicion of fungal infection to antifungal treatment was 4 days (range from 1 ~ 16 days). All patients (except the one patient who died) were administrated caspofungin as antifungal agent after diagnoses for at least 3 weeks (3–12 weeks), the patient with endocranial aspergillosis received additional voriconazole for six months. Cessation of antifungal treatment is subjectively judged by physicians based on patient's improved condition, disappearance of clinical symptoms, and improved laboratory tests. CT scan imaging was not used as the evaluation measure, as four patients still had small lamellar high density lesion on CT imaging. After a median follow-up of 7 months (range from 4 to 11 months), all surviving patients were well, the residual lesion on CT scan disappeared in three cases, with significant decrease in a fourth patient.

Discussion

The development of IPA is almost always observed in immunosuppressed individuals with an impairment or deficiency of phagocyte function [9]. It has been previously demonstrated that decompensated liver disease is an acquired immune deficiency state [5, 6]; dysmetabolism and malnutrition are also contributing factors. Patients with severe liver disease are more prone to various infections. Patients in our study presented two risk factors for invasive pulmonary aspergillosis, broad spectrum antibiotic usage and steroid exposure, according to the criteria defined by the EORTC/MSG [7]. These elements lend to the notion that narrow-spectrum antibiotic is preferred and long term antibiotic treatment should be avoided; corticosteroids should be used with caution in patients with hepatic failure.

Most patients in this study had atypical clinical presentation often disregarded by physicians due to underlying hepatic dysfunction and hepatic encephalopathy, and radiological features were no different from bacterial pneumonias. It should be noted that nine of twelve (75%) biopsies performed on patients with suspected IPA confirmed this diagnosis. This rate was achieved because a high index of suspicion exists for the occurrence of invasive pulmonary aspergillosis in patients with hepatic failure. An aggravated condition during the usage of antibiotics, such as an unexpected breakdown in mental status, a marked increase in total serum bilirubin, a decrease in PTA with antibiotic resistant fever, indicates suspected fungal infection [10]. Although Candida monilia is the most common pathogen in clinical fungal infection, the change in leukocyte counts and percentage of neutrophils may be used for differential diagnosis of Candida monilia and Eurotium infection [11]. A rapid progression on thoracic CT scan with no response to antibiotic therapy would reinforce the judgment [8]. In our study, the leukocyte counts were elevated in 91.7 (11/12) patients, with increased percentage of neutrophils in all patients.

In our study, caspofungin dramatically reversed the high mortality of the disease reported by others [12, 13], while therapy to rebuild the immune system was not adopted, as hepatic injury caused by HBV uses immunological mechanisms.

Conclusion

Atypical clinical presentation of IPA was found in 12 patients with hepatic failure, suggesting that a high index of suspicion is required for timely diagnosis of IPA. Early and effective anti-fungal treatment greatly improves the prognosis.

Notes

Declarations

Acknowledgements

The authors thank Dr. Reena Ghildyal for proof reading the manuscript for English language.

Authors’ Affiliations

(1)
Shanghai Public Health Clinical Center affiliated to Fudan University
(2)
Huashan Hospital affiliated to Fudan University

References

  1. Trof RJ, Beishuizen A, Debets-Ossenkopp YJ, Girbes AR, Groeneveld AB: Management of invasive pulmonary aspergillosis in non-neutropenic critically ill patients. Intensive Care Med. 2007, 33: 1694-1703. 10.1007/s00134-007-0791-z.View ArticlePubMedPubMed CentralGoogle Scholar
  2. Sharma OP, Chwogule R: Many faces of pulmonary aspergillosis. Eur Respir J. 1998, 12: 705-715. 10.1183/09031936.98.12030705.View ArticlePubMedGoogle Scholar
  3. Denning DW: Invasive aspergillosis. Clin Infect Dis. 1998, 26: 781-803. 10.1086/513943.View ArticlePubMedGoogle Scholar
  4. Perfect JR, Cox GM, Lee JY, Kauffman CA, de Repentigny L, Chapman SW, Morrison VA, Pappas V, Hiemenz JW, Stevens DA: The impact of culture isolation of Aspergillus species: a hospital-based survey of aspergillosis. Clin Infect Dis. 2001, 33: 1824-1833. 10.1086/323900.View ArticlePubMedGoogle Scholar
  5. El-Serag HB, Anand B, Richardson P, Rabeneck L: Association between hepatitis C infection and other infectious disease: a case for targeted screening?. AM J Gastroentero. 2003, 98: 167-174. 10.1111/j.1572-0241.2003.07176.x.View ArticleGoogle Scholar
  6. Yakoob J, Jafri W, Hussainy AS: Candida oesophagitis with hepatitis C virus: an uncommon association. Eur J Gastroenterol Hepato. 2003, 15: 701-703. 10.1097/00042737-200306000-00019.View ArticleGoogle Scholar
  7. Ascioglu S, Rex JH, de Pauw B, Bennett JE, Bille J, Crokaert F, Denning DW, Donnelly JP, Edwards JE, Erjavec Z, Fiere D, Lortholary O, Maertens J, Meis JF, Patterson TF, Ritter J, Selleslag D, Shah PM, Stevens DA, Walsh TJ, Invasive Fungal Infections Cooperative Group of the European Organization for Research and Treatment of Cancer; Mycoses Study Group of the National Institute of Allergy and Infectious Diseases: Defining opportunistic invasive fungal infections in immunocompromised patients with cancer and hematopoietic stem cell transplants: an international consensus. Clin Infect Dis. 2002, 34: 7-14. 10.1086/323335.View ArticlePubMedGoogle Scholar
  8. Caillot D, Casasnovas O, Bernard A, Couaillier JF, Durand C, Cuisenier B, Solary E, Piard F, Petrella T, Bonnin A, Couillault G, Dumas M, Guy H: Improved management of invasive pulmonary aspergillosis in neutropenic patients using early thoracic computed tomographic scan and surgery. J Clin Oncol. 1997, 15: 139-147.PubMedGoogle Scholar
  9. Diamond RD: Immune response to fungal infection. Rev Infect Dis. 1989, 11: S1600-1604.View ArticlePubMedGoogle Scholar
  10. Huifen Wang: Emphasis on the diagnosis and treatment of deep fungal infection in patients with severe hepatic disease. Infect Dis Info. 2006, 19: 166-167.Google Scholar
  11. Yunping Huang, Miaoer Huang, Hua Chen, Xueying Yang: Fungus infection and differential leukocyte count: relation between them. Chin J Nosocomiol. 2006, 16: 630-632.Google Scholar
  12. Prodanovic H, Cracco C, Massard J, Massard J, Barrault C, Thabut D, Duguet A, Datry A, Derenne JP, Poynard T, Similowski T: Invasive pulmonary aspergillosis in patients with decompensated cirrhosis: case series. BMC Gastroenterol. 2007, 7: 2-10.1186/1471-230X-7-2.View ArticlePubMedPubMed CentralGoogle Scholar
  13. Vandewoude KH, Blot SI, Depuydt P, Depuydt P, Benoit D, Temmerman W, Colardyn F, Vogelaers D: Clinical relevance of Aspergillus isolation from respiratory tract samples in critically ill patients. Crit Care. 2006, 10: R31-10.1186/cc4823.View ArticlePubMedPubMed CentralGoogle Scholar
  14. Pre-publication history

    1. The pre-publication history for this paper can be accessed here:http://www.biomedcentral.com/1471-230X/8/32/prepub

Copyright

© Li et al; licensee BioMed Central Ltd. 2008

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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