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Table 2 PPC risk index

From: Effectiveness and pulmonary complications of perioperative laryngeal mask airway used in elderly patients (POLMA-EP trial): study protocol for a randomized controlled trial

Independent risk factors

Risk score

Age > 70 years

1

Cough and sputum production

1

Diabetes

1

Smoker (or patient quit within the past 6 months)

1

COPD

1

BMI > 27 kg/m2

1

FEV1 < 80% and FEV1/FVC < 70%

2

  1. COPD chronic obstructive pulmonary disease, BMI body mass index, FEV1 forced expiratory volume in 1 s, FVC forced vital capacity