Long-term follow-up and predictive factors of recurrence of anemia in a cohort of 102 very elderly patients explored for iron-deficiency anemia.

AIM: To evaluate long-term follow-up and predictors of relapse of anemia in a cohort of 102 very elderly patients previously explored for iron-deficiency anemia (IDA). METHODS: One hundred and two patients [61 women and 41 men, mean age 82+/-5.8 y (75 to 98)] explored for IDA were prospectively followed up from inclusion (June 2003 to May 2005) until death or May 2006. Survival rate was estimated by the Kaplan-Meier method and compared by the log-rank test. Predictors of recurrence of anemia were identified by multivariate analysis in the 4 following subgroups: unexplained IDA (subgroup 1, n=27), benign lesion (subgroup 2, n=37), cancer treated curatively (subgroup 3, n=28), cancers treated palliatively (subgroup 4, n=10). RESULTS: Median follow-up was 20 months. At baseline, main clinical and laboratory data were not significantly different in the 4 subgroups, especially as regards severe comorbidities. Thirty-three patients died, 10 (30%) of them in the first month. Ten (100%) belonged to subgroup 4 versus, respectively, n=7 (26%), n=8 (22%), and n=8 (29%) of patients from subgroups 1, 2, and 3 (P<0.001). No death was directly related to recurrence of anemia. Survival rate at 1 year was 10% in subgroup 4, significantly lower than the other 3 subgroups (subgroup 1: 84%; subgroup 2: 86%; subgroup 3: 78%; log-rank test, P<0.0001). Anemia recurred in 18 cases, and required red cell transfusion in 13 cases. Predictive factors of recurrence of anemia [odds ratio (confidence interval 95%), P] were cancers treated palliatively [14.9 (3-72), P<0.01] and angiodysplasias [4.5 (1.1-18.2), 0.035]. CONCLUSIONS: In a cohort of very elderly patients explored for IDA, the mortality rate and the long-term survival were not different for patients with IDA related to a cancer treated curatively than those with unexplained IDA and those with IDA related to a benign lesion. Angiodysplasias and cancers treated palliatively were associated with recurrence of anemia. These results suggest interventionist strategies (including endoscopic investigation and appropriate surgery) for elderly patients with IDA.

Management and predictors of early mortality in elderly patients with iron deficiency anemia: a prospective study of 111 patients.

OBJECTIVES: Iron deficiency anemia (IDA) is common in the elderly. It usually results from gastrointestinal (GI) bleeding and requires endoscopic exploration of the gastrointestinal tract. The aim of this prospective study in elderly patients was to evaluate the feasibility of endoscopy, the therapeutic impact, and identify predictors of early mortality. METHODS: From June 2003 to May 2005, all patients over 75 years, hospitalized for anemia were screened for iron deficiency. Clinical (including serious comorbidities), biological, endoscopic and therapeutic data were collected. One month after treatment, a follow-up was carried out to assess the tolerance of such investigation and treatment. RESULTS: One hundred and eleven patients (69 women, 82.3 +/- 6.4 years) had IDA, 102 (92%) underwent an upper endoscopy and 91 (82%) a colonoscopy. Nine (8%) patients were not investigated because of poor clinical condition (N=4) or dementia (N=5). Of the 75 (68%) patients with an identified source of bleeding, 12 (11%) had a synchronous lesion, 43 (39%) a colorectal source including 31 (72%) colorectal cancer, and 44 (40%) an upper GI source. Sixty-nine (92%) of the 75 patients received at least one of the following treatments: medical (N=27), endoscopic (N=20), and surgical (N=31). Surgery was curative in 28/31 (90%) cases of which 25/27 were colorectal cancers. One month after treatment, overall mortality was 11/111 (10%) and 4/31 (13%) after surgery. Predictors of early mortality (Odd ratio, 95% Confidence Interval) were: a malign cause (42; 3-588), no specific treatment (34; 3-423), at least 2 co-morbidities (20; 1-400). CONCLUSION: In an unselected hospitalized population of elderly patients with IDA, endoscopy was generally feasible, allowing identification of a source of bleeding, especially colorectal cancer. A specific treatment was usually possible and proved curative without increase in early mortality.

Predictive factors of GI lesions in 241 women with iron deficiency anemia.

OBJECTIVES: GI blood loss is the most common cause of iron deficiency anemia (IDA) in postmenopausal women and menstrual blood loss in premenopausal women. We aimed to evaluate the diagnostic yield of endoscopy in women with IDA and to define predictive factors of a GI lesion. METHOD: Clinical, biological, endoscopic, and histological data from patients with IDA were systematically collected on a computer. Multivariate analysis (logistic regression) was performed to determine whether these data were associated with a GI lesion. RESULTS: Between January, 1989 and June, 1999, 241 consecutive women had endoscopies for IDA (mean age = 52.3 +/- 21.8 yr). A substantial GI lesion was detected in 119 patients (49.4%). Ten patients (4%) had both upper and lower GI lesions. A source of IDA was revealed by upper endoscopy in 86 cases (35.6%) and by colonoscopy in 33 (13.7%). The most common upper lesions were peptic ulceration (42/241 [17.4%]), esophagitis (15/241 [6.2%]), and cancer (9/241 [3.7%]). Colonic cancer (15/241 [6.2%]) and polyps (10/241 [4.1%]) were the most frequent lesions detected by colonoscopy. Predictive factors (odds ratio, 95% CI) of GI lesions diagnosed by endoscopy were abdominal symptoms (8.3, 3.9-17.2), age > 50 yr (4.4, 2.1-9.2), and Hb < 9 g/dl (3, 1.5-6.1). Thirty-one women (13%) had none of these predictive factors; in this group only two lesions were identified (one esophagitis and one duodenal ulcer). The positive predictive value of these three independent predictors was 87%, and the negative predictive value was 93.5%. CONCLUSION: Endoscopy revealed a source of IDA in 49.4% of cases. Three predictive factors of GI lesion were identified. Endoscopic investigation should be avoided in women without these three predictive factors. Conversely, these factors are strongly associated with a GI lesion.

Helicobacter pylori-associated chronic gastritis and unexplained iron deficiency anemia: a reliable association?

BACKGROUND AND AIM: About 35% of iron deficiency anemia cases remain unexplained after a gastrointestinal evaluation. An association between Helicobacter pylori and iron malabsorption has been suggested. The aim of this study was to determine whether H. pylori-associated chronic gastritis is linked to unexplained iron deficiency anemia in adults. METHODS: From 1996 to 2001, we identified 105 patients with unexplained iron deficiency anemia after upper endoscopy, colonoscopy, small bowel radiographic examination and duodenal biopsies. Two biopsies were obtained from the gastric antrum and two from the corpus of each patient. Gastritis status was described according to the Sydney System and H. pylori infection was assessed by an immunohistochemical test on biopsy specimens. This group was compared to a control group matched for sex and age. RESULTS: There were 76 women and 29 men (mean age 57.4 +/- 21.4 years) examined in the study. A H. pylori-associated chronic gastritis was identified in 63 cases (60%) vs. 45 cases (43%) cases in the control group (p <.01). Atrophic gastritis was significantly associated with iron deficiency anemia compared with the control group [16 (15%) vs. 6 (6%); p <.03]. In the unexplained iron deficiency anemia group, (1) patients with chronic gastritis were significantly younger (52 +/- 22 vs. 64 +/- 20 years; p <.005), and (2) chronic gastritis was not linked to sex [sex ratio (male/female): 0.5 vs. 0.34, p =.34]. The prevalence of H. pylori infection was similar between premenopausal and postmenopausal women [28 (27%) vs. 26 (25%); p =.7] with iron deficiency anemia. CONCLUSION: H. pylori infection and chronic gastritis, especially atrophic gastritis, are significantly associated with unexplained iron deficiency anemia. Relationships between H. pylori-associated chronic gastritis and unexplained iron deficiency anemia should be considered.