Table 1 Preoperative assessment protocol for patients with previous COVID-19 based on the type of surgery and the severity index of the disease [51]
Step/test | Minor surgery | Major surgery | ||
|---|---|---|---|---|
Asymptomatic | Symptomatic | Asymptomatic | Symptomatic | |
Chest X-ray | No, if SpO2 is normal | No, if SpO2 is normal | Yes | Yes |
ECG | Yes | Yes | Yes | Yes |
Echocardiography | No, when clinical condition is normal | No, when clinical condition is normal | No, if the results of cardiological tests are normal | Determined by H&P |
Complete metabolic order | Yes | Yes | Yes | Yes |
Complete blood count with formula | Yes | Yes | Yes | Yes |
PTT | No | Based on clinical severity | Yes | Yes |
D-dimer | No | Yes | Yes | Yes |
Fibrinogen | No | Based on clinical severity | Yes | Yes |
NT-proBNP | No | Yes | Yes | Yes |
LDH, ferritin, prealbumin | No | Based on clinical severity | No | Based on clinical severity |