Proportion of redo operations Re-operations are relatively uncommon after a previous cardiac surgery procedure; however, for a small percentage of patients this is required. These procedures are classified in this report as a “re-do” operation and are defined as cases where a patient has returned or presented to RNSH for a repeat cardiac surgery procedure (regardless of where the first procedure was performed). The 352 RNSH cardiac surgery cases reported for 2021 included 24 re-do operations, accounting for 6.8% of total cardiac surgery cases (Figure 6). In previous analyses of RNSH cardiac data, re-do surgery was approximately 8–10% of all cases. The proportion of re-do operations in 2021 has remained relatively constant when compared to previous reporting periods before 2009.
Blood loss and transfusion The ANZSCTS Program reports on the cumulative blood products given within the intra-operative and postoperative period.
In 2021, 45.7% of all cardiac surgery cases received a blood product intra-operatively and/or post-operatively.
Table 5 and Figure 7 show the proportion of transfused cardiac cases by procedure type.
Procedure type
Transfused
Transfusion rate (%)
n
All
161
352 45.7
Isolated CABG
63
171
36.8
Isolated valve
26
57 45.6
Valve + CABG
16
28 57.1
Aortic (± CABG/valve)
37
45 82.2
Other (± CABG/valve)
19
51
37.3
Table 5. Transfusion rate for each procedure type. Transfusion rate is calculated by dividing the number of transfused cases by the number of cases in each procedure type (n).
Aortic (± CABG/valve) surgery cases had the highest transfusion rate, with 82.2% receiving a blood product intra-operatively and/or postoperatively. In comparison, isolated CABG cases had the lowest transfusion rate for at 36.8%.
Figure 6. Proportion of redo cases
Figure 7. Transfusion rate for each procedure type
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Cardiac Surgery Annual Report 2021
Cardiac Surgery Annual Report 2021
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