Morbidity Table 22 provides an outline of all complications and the incidence of each complication type for all RNSH isolated CABG surgery cases in 2021. Factors to note include: • Each case can have multiple complications and returns to theatre (RTT) in the postoperative period. • Each complication within the table has been counted as a separate incident.
Transfusion rate
The transfusion rate for on-pump and off-pump isolated CABG cases was calculated by dividing the number of transfusions by the number of on-pump and off-pump cases.
• For all isolated CABG cases, 63 (36.8%) patients were transfused • For on-pump isolated CABG cases, 50 (39.7%) patients were transfused • For off-pump isolated CABG cases, 13 (28.9%) patients were transfused
Complication
% of isolated CABG
n
On- or off-pump
Transfused
Transfusion rate (%)
n
Return to theatre (RTT) total
14
8.2
Re-op bleeding / tamponade
3
1.8
All
63
171
36.8
Re-op deep sternal wound infection
4
2.3
On-pump
50
126 39.7
Re-op insertion of pacemaker/AICD
2
1.2
Off-pump
13
45 28.9
Re-op other cardiac
2
1.2
Table 20. On- and off-pump comparisons for transfusion rate. Transfusion rate was calculated by dividing the number of transfused by the number of on- and off-pump cases (n).
Re-op other non-cardiac
4
2.3
New renal insufficiency
3
1.8
Post-operative indicators
Pre-/post-operative MI
2
1.2
Pre-/post-operative cardiogenic shock
3
1.8
Post-operative variables
Median (IQR)
Cardiac inotrope or vasopressor use
103
60.2
>4 hours post-operatively
102
59.6
Post-op ICU LOS (hours)
65.9 (47.1, 90.8)
for low cardiac output syndrome
35
20.5
Ventilation (hours)
8.4 (6, 13.3)
for low SVR syndrome
69
40.4
Blood loss (mls)
230 (150, 320)
New cardiac arrhythmia
45
26.3
Table 21. Post-operative indicators for all isolated CABG cases in ICU. Values are expressed as medians and interquartile ranges (IQR).
New neurologic
3
1.8
Stroke permanent
1
0.6
Blood loss
Stroke transient
1
0.6
Median blood loss within the first four hours post-operatively for all isolated CABG cases was 230 mls (IQR: 150, 320 mls).
Continuous coma ≥ 24hrs
1
0.6
Ventilation
New pulmonary
14
8.2
Median ventilation within the first four hours post-operatively for all isolated CABG cases was 8.4 hours (IQR: 6, 13.3 hours).
Ventilation prolonged (>24 hrs)
4
2.3
Pulmonary embolism
1
0.6
Post-operative ICU LOS
Pneumonia
9
5.3
Median post-operative LOS in ICU for all isolated CABG cases was 65.9 hours (IQR: 47.1, 90.8 hours).
Table 22. Complications observed in isolated CABG cases
34
35
Cardiac Surgery Annual Report 2021
Cardiac Surgery Annual Report 2021
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