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12th Congress of the European Hematology ... - Haematologica

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0753<br />

A SUSTAINED REMISSION OF IDIOPATHIC THROMBOCYTOPENIC PURPURA AFTER<br />

HELICOBACTER PYLORI ERADICATION: A LONG TERM FOLLOW-UP<br />

N. Suvajdzic, 1 B. Stankovic, 2 V. Artiko, 3 T. Cvejic, 4 V. Bulat, 4<br />

M. Colovic, 1 D. Boskovic 1<br />

1 Institute <strong>of</strong> Hemathology, BELGRADE; 2 Rehabilit.Center for hematol.pts, IVAN-<br />

JICA; 3 Institute <strong>of</strong> Nuclear medicine, CCS, BELGRADE; 4 Inst. <strong>of</strong> Gastroenterology,<br />

CCS, BELGRADE, Serbia<br />

Background. Several studies have described increase <strong>of</strong> <strong>the</strong> platelet count<br />

among patients with chronic idiopathic thrombocytopenic purpura (ITP)<br />

following H. pylori eradication. However, in most <strong>of</strong> <strong>the</strong>se studies <strong>the</strong><br />

median follow-up after eradication was less <strong>the</strong>n a year. Aims. A long<br />

term monitoring <strong>of</strong> <strong>the</strong> platelet count after H. pylori eradication in adult<br />

H. pylori- positive ITP patients is performed in order to evaluate whe<strong>the</strong>r<br />

<strong>the</strong> eradication <strong>of</strong> H. pylori is associated with sustained ITP remission.<br />

Patients and Methods. 39 H. pylori-infected adult ITP pts. (9 male, 30 female;<br />

median disease duration 7 years; median age 54 years; mean platelet<br />

count 68×10 9 /L; 7refractory; median follow-up 36 months) entered <strong>the</strong><br />

prospective study between February 2002-December 2006. The diagnosis<br />

<strong>of</strong> ITP was made according to <strong>the</strong> ASH Guidelines. H. pylori infection<br />

was assessed by C14-urea breath test (UBT) in all patients and in 24/39<br />

was also confirmed by histology <strong>of</strong> gastric biopsy. All immunosuppressive<br />

drugs were withdrawn at least 1 month before examination. 32 H.<br />

pylori-positive patients were treated with: clarithromycin 500 mg BD,<br />

amoxycillin 1 g BD and pantoprazole 40 mg BD for 7 days. Amoxycillin<br />

was replaced with metronidazole 500 mg TDS in penicillin-allergic<br />

patients. Eradication <strong>of</strong> infection was assessed by UBT 2 months after<br />

treatment completion and at <strong>the</strong> end <strong>of</strong> follow-up. Platelet count was<br />

monitored monthly and assessed at 3 and 6 months after <strong>the</strong> end <strong>of</strong> treatment,<br />

<strong>the</strong>n every 3 month. A complete response (CR) was defined as a<br />

platelet count <strong>of</strong> >150×10 9 /L, and a partial response (PR) as a platelet<br />

count <strong>of</strong> >50×10 9 /L with an increase <strong>of</strong> >30×10 9 /L with respect to <strong>the</strong><br />

pretreatment value. The remaining patients were considered with no<br />

response (NR). Data were analyzed by t test; percentages were compared<br />

by χ 2 test (Fischer exact test for value ″5); a p-value

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