Volume 23, Number 5—May 2017
Research
Invasive Nontuberculous Mycobacterial Infections among Cardiothoracic Surgical Patients Exposed to Heater–Cooler Devices1
Table 2
Descriptive characteristics of case-patients with invasive extrapulmonary NTM infections and control-patients among patients who underwent cardiothoracic surgery, York, Pennsylvania, USA, 2015*
Characteristic |
Case-patients, n = 11 |
Control-patients, n = 48 |
p value† |
Demographics | |||
Age, y, mean (range) | 69 (47–84) | 64 (20–84) | 0.33 |
Male sex | 9 (82) | 27 (56) | 0.17 |
White race |
11 (100) |
45 (94) |
1.00 |
Predisposing medical condition | |||
Chronic lung disease | 4 (36) | 8 (17) | 0.21 |
COPD | 1 (9) | 8 (17) | 1.00 |
Sarcoidosis | 3 (27) | 0 | 0.005 |
Diabetes | 1 (9) | 15 (31) | 0.26 |
Immunocompromised | 3 (27) | 10 (21) | 0.69 |
HIV | 0 | 0 | NA |
Transplant | 0 | 0 | NA |
Chemotherapy | 2 (18) | 9 (19) | 1.00 |
Steroid treatment | 0 | 2 (4) | 1.00 |
Hematologic malignancy‡ | 2 (18) | 1 (2) | 0.09 |
*Values are no. (%) patients except as indicated. COPD, chronic obstructive pulmonary disease; NA, not applicable; NTM, nontuberculous mycobacteria.
†Fisher exact test for categorical variables or two 2-sample t tests with pooled variance.
‡Among cases, hematologic malignancy included chronic lymphocytic leukemia and myelodysplastic syndrome. Among controls, hematologic malignancy included Hodgkin’s lymphoma.
1Preliminary results from this study were presented at the Epidemic Intelligence Service conference, May 2–5, 2016, Atlanta, Georgia, USA; and the American Society for Microbiology Microbe conference, June 16–20, 2016, Boston, Massachusetts, USA.