Abstract:
BACKGROUND:One method of countering chronic lung donor shortages is the practice of donation after cardiac death (DCD). However, this technique inevitably leads to pulmonary dysfunction related to warm ischemia. One promising method of alleviating this problem is ventilation. However, it can rarely be initiated from the onset of cardiac arrest, particularly in uncontrolled DCD donors. We investigated the protective effect of the last 60 min of ventilation during a 240-min warm ischemic time. METHODS:We rendered donor dogs cardiac dead and left them at room temperature. Six dogs received ventilation with 100% oxygen for 60 min starting at 180 min after cardiac arrest (ventilation group). Eight dogs received no ventilation. Lungs were harvested 240 min after cardiac arrest, then transplanted into recipient dogs. At 60 min after reperfusion, the right pulmonary artery was ligated, and the function of the left transplanted lung was evaluated. RESULTS:In the ventilation group, all six animals survived for 240 min after reperfusion, whereas in the nonventilation group, only four of eight survived. The ventilation group demonstrated significantly better pulmonary oxygenation, shunt fraction, and wet-to-dry weight ratio. Furthermore, the ventilation group revealed significantly higher levels of high-energy phosphates in the lung tissues, fewer apoptotic cells, lower levels of tumor necrosis factor-α and interleukin-8 messenger RNA in the lung tissues, and lower levels of interleukin-6 messenger RNA in the serum. CONCLUSION:Our results suggest that ventilation during the late phase of the preprocurement period may ameliorate ischemia-reperfusion injury in DCD donors.
journal_name
Transplantationjournal_title
Transplantationauthors
Sakamoto J,Chen F,Yamada T,Nakajima D,Ohsumi A,Kikuchi R,Zhao X,Fujinaga T,Shoji T,Sakai H,Bando T,Date Hdoi
10.1097/TP.0b013e31822d87c6subject
Has Abstractpub_date
2011-10-27 00:00:00pages
864-70issue
8eissn
0041-1337issn
1534-6080journal_volume
92pub_type
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