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Table 2 Physiological effects and risks in the critically ill morbidly obese patient

From: Clinical review: Ventilatory strategies for obstetric, brain-injured and obese patients

Respiratory Reduced lung volumes
  Atelectasis and ventilation–perfusion mismatch
  Increased work of breathing and oxygen consumption
  Obstructive airways disease (mechanical and asthma)
  Obstructive sleep apnea
  Obesity hypoventilation syndrome
Cardiovascular Coronary artery disease
  Systolic and diastolic left ventricular dysfunction
  Pulmonary arterial hypertension
  Obesity supine death syndrome
Other Diabetes mellitus
  Increased risk of venous thromboembolism
  Increase risk of gastric acid aspiration
  Altered drug pharmacokinetics
  Difficult venous access
  Increased risk of renal failure
  Increased risk of pressure ulcers