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Table 1 Accordion classification system with severity weights

From: The postoperative morbidity index: a quantitative weighing of postoperative complications applied to urological procedures

Grade

Description

Severity weight

1

Treatment of complication requires only minor invasive procedures that can be done at the bedside, such as insertion of intravenous lines, urinary catheters, and nasogastric tubes, and drainage of wound infections. Physiotherapy and antiemetics, antipyretics, analgesics, diuretics, electrolytes, and physiotherapy are permitted.

0.110

2

Complication requires pharmacologic treatment with drugs other than such allowed for minor complications, e.g. antibiotics. Blood transfusions and total parenteral nutrition are also included.

0.260

3

No general anesthesia is required to treat the complication: requires management by an endoscopic, interventional procedure, or reoperation without general anesthesia.

0.370

4

General anesthesia is required to treat complication. Alternately, single-organ failure has developed.

0.600

5

General anesthesia is required to treat complication and single organ failure has developed. Alternately, multisystem organ failure (2 or more organ systems) has developed.

0.790

6

Postoperative death occurred.

1.000