Decline in pulmonary function in patients with breast cancer receiving dose-dense chemotherapy: a prospective study.

Abstract

BACKGROUND:

Prompted by complaints of dyspnea in breast cancer patients receiving adjuvant dose-dense chemotherapy (DDC), we sought to evaluate the possible association of DDC with pulmonary dysfunction.

PATIENTS AND METHODS:

A total of 34 consecutive patients receiving adjuvant DDC were enrolled. The chemotherapy regimen consisted of i.v. doxorubicin 60 mg/m(2) and cyclophosphamide 600 mg/m(2) (AC) every 14 days x4 with growth factor support followed by weekly i.v. paclitaxel 80 mg/m(2) x12. The following parameters were prospectively measured before and after the AC protocol (P1, P2) and at completion of paclitaxel treatment (P3): presence of dyspnea, blood pressure, pulse rate, hemoglobin, erythrocyte sedimentation rate, C-reactive protein level, cardiac ejection fraction, and pulmonary function. Repeated measures analysis was used to evaluate differences among the time points, and paired t-test was used to evaluate differences between consecutive time points.

RESULTS:

Although only five patients (15%) complained of dyspnea, there was a significant decrease in mean carbon monoxide diffusing capacity (DLCO), in all patients from P1 (22.09 ml/min/mmHg) to P3 (15 ml/min/mmHg) and in 29 of 32 patients (90.6%) from P1 to P2 (15.96 ml/min/mmHg) (P<0.001).

CONCLUSIONS:

DDC is associated with a statistical significant reduction in DLCO. Awareness of this potential toxicity may be important in women with preexisting lung disease.

• Authors: R Yerushalmi, M R Kramer, S Rizel, A Sulkes, K Gelmon, T Granot, V Neiman, S M Stemmer
• Journal: Annals of oncology : official journal of the European Society for Medical Oncology (Ann Oncol) Vol. 20 Issue 3 Pg. 437-40 (Mar 2009) ISSN: 1569-8041 [Electronic] England
• PMID: 19139179 (Publication Type: Journal Article)

Topics

• Aged
• Breast Neoplasms (drug therapy, physiopathology)
• Dose-Response Relationship, Drug
• Humans
• Prospective Studies
• Respiratory Function Tests