Hemoptysis in patients with renal insufficiency : the role of flexible bronchoscopy

Blood loss during flexible bronchoscopy: a prospective observational study

BACKGROUND

Haemorrhage remains a complication of flexible bronchoscopy.

OBJECTIVES

We aimed to measure the actual blood loss in patients at low risk of bleeding and to assess its association with the underlying pulmonary pathology, superior vena cava (SVC) syndrome, procedure(s) performed and laboratory values.

METHODS

We screened all patients scheduled for flexible bronchoscopy and enrolled 234 subjects over 18 months. Subjects with a history of haemorrhagic tendency, platelets <20 × 10(3)/µl, a history of anti-coagulation or anti-platelet therapy and a history or clinical evidence of liver failure were excluded. Blood loss during the procedure was measured from aspirated secretions with a haemoglobin detector and categorised into minimal (<5 ml), mild (5-20 ml), moderate (20-100 ml) and severe bleeding (>100 ml).

RESULTS

Overall, 210 subjects had minimal, 19 had mild and 5 had moderate bleeding. No subject experienced severe blood loss. Patients with SVC syndrome had the highest mean blood loss (6.0 ml) when compared to bronchogenic carcinoma without SVC syndrome (p = 0.033) and other diagnosis (p = 0.026). The blood loss with trans-bronchial needle aspiration (TBNA, mean 3.4 ml) was significantly less than with TBNA combined with endobronchial or transbronchial biopsy (mean 5.0 ml, p < 0.001). Anaemia, a platelet count of 25-155 × 10(3)/µl and an international normalized ratio of >1.3 were not associated with an increased risk of bleeding.

CONCLUSIONS

We found no severe bleeding in this cohort preselected to have a low clinical risk of bleeding. Moreover, our data suggest that clinical screening and a platelet count ≥20 × 10(3)/µl alone may be sufficient to identify low-risk patients.

[Hemoptysis]

Hemoptysis is a potentially life-threatening complication of various diseases. The most common causes are infectious and inflammatory processes, followed by neoplasms, pulmonary embolisms, mitral stenoses, coagulopathies, and multiple systemic disorders. Primary examinations include a chest x-ray, an angio CT and a bronchoscopy. Sometimes, a bronchial artery angiogram is required. The patient is at risk of suffocation because blood and clots can severely obstruct his airways. Thus, the most important measures are: supplemental oxygen, positioning the patient with the bleeding side down, bronchoscopical suctioning and removal of blood and clots. Coagulopathies have to be corrected. Application of vasoactive drugs may help temporarily. In cases of bleeding from central lesions, coagulation with laser or argon-plasma-coagulator is feasible. Heavy bleeding from the periphery requires a balloon or tube tamponade. Depending on the cause and the severity of the bleeding either anti-inflammatory medical treatment, hemostyptic radiation therapy, bronchial artery embolisation or a surgical procedure must follow.

Pulmonary-renal vasculitic disorders: differential diagnosis and management

Pulmonary-renal syndrome (PRS) is a combination of diffuse pulmonary hemorrhage and glomerulonephritis. Pulmonary-renal syndrome is not a single entity and is caused by a variety of conditions, including Goodpasturés syndrome associated with autoantibodies to the glomerular and alveolar basement membranes, various forms of primary systemic vasculitis associated with serum positivity for antineutrophil cytoplasmic antibodies (ANCA), cryoglobulinemia, systemic lupus erythematosus, systemic sclerosis, antiphospholipid syndrome, environmental factors, and drugs. The majority of cases of PRS are associated with ANCAs. The antigen target in Goodpasturés syndrome is the alpha-3 chain of type IV collagen. The antigen target in PRS associated with systemic vasculitis is proteinase-3 and myeloperoxidase. Pulmonary-renal syndrome has been observed from the first to the ninth decade of life. The widespread adoption of serologic testing performed in an appropriate clinical context hopefully will limit diagnostic delay. The goals of treatment in PRS are to remove the circulating antibodies, to stop further production of autoantibodies, and to remove any antigen that stimulates antibody production. Treatment is based on plasmapheresis, steroids, and cyclophosphamide; however, infections are frequent contributors to death, and less toxic alternatives may improve outcome and prognosis resulting in a long-term survival. The degree of renal function and the percent of crescents on renal biopsy are better predictors of outcome. Renal transplantation can be safely carried out in PRS.