Incidence Of Hypotension In Patients With Multiple Myeloma During High Dose Chemotherapy and Autologous Stem Cell Rescue

• Published in: Blood 2013-11, Vol.122 (21), p.3324-3324
• Main Authors: Sehgal, Priya, Biran, Noa, Sahni, Gagan, Chari, Ajai
• Format: Article
• Language: English
• ISSN: 0006-4971; 1528-0020
• DOI: 10.1182/blood.V122.21.3324.3324

The median age of patients diagnosed with multiple myeloma (MM) is 69. Up to 60-80% of patients in this age group have hypertension (HTN) (Burt VL et al. Hypertension 1999), and are on anti-hypertensive medications. A standard treatment for MM is high dose melphalan (HDM) chemotherapy with autologous stem cell transplant (ASCT), which often results in gastrointestinal complications that can result in hypovolemia. The combined effect of anti-HTN agents and ASCT-related complications may result in blood pressure (BP) ranges that are precariously low. To date, the incidence of hypotension in the setting of ASCT for MM is unknown. In this case series of 102 patients who received ASCT for MM, we compare the characteristics of those who became hypotensive with those who did not. We reviewed the charts of 102 consecutive MM/AL amyloid patients admitted for HDM chemotherapy with ASCT at Mount Sinai Hospital between May 2011 and June 2013. May 2011 was chosen as the date of inclusion because at this time, electronic medical records were implemented, allowing for detailed review of vital signs and other clinical data. Patients were classified into two groups. Patients included in group 1 demonstrated a drop in BP which was defined as meeting at least 1 of the following criteria: A) One or more anti-HTN medications were discontinued during ASCT B) Although normotensive on admission for ASCT, the median systolic or diastolic blood pressure (SBP or DBP) on date of discharge was ≤ 100 or 60 mm Hg respectively C) A decrease in SBP of ≥ 20 mm Hg was observed between admission and discharge Patients who did not meet any of the above criteria were classified into group 2. Baseline and peri- SCT characteristics of the two groups were compared using the chi square test. Of the 102 patients analyzed, 6 had AL amyloid and the remaining 96 had MM. 43 met at least one inclusion criteria for group 1 and the remaining 59 were classified as group 2. Specifically, of the patients in group 1, 18 met inclusion criteria A, 21 met inclusion criteria B, and 23 met inclusion criteria C. Among the patients in group 1 who met 2 criteria: 4 patients met criteria A and B, 4 patients met criteria A and C, and 9 patients met criteria B and C. Baseline characteristics including median age (64 and 63), gender distribution (55.8% and 47.5% females respectively), and a history of HTN (41.9% vs. 37.3%) were comparable in both groups (p>0.05). The median length of stay was 17 days in both groups. The