Background: Postoperative pulmonary complications (PPCs) are a major cause of postoperative morbidity, mortality, and prolonged hospital stays. Previous studies looking at risk factors for PPCs were limited by sampling bias and small sample sizes.
Study design: Prospective, randomized-sample cohort study.
Setting: Fifty-nine participating Spanish hospitals (community, intermediate referral, or major tertiary-care facilities).
Synopsis: Patients undergoing surgical procedures with general, neuraxial, or regional anesthesia were selected randomly. The main outcome was the development of at least one of the following: respiratory infection, respiratory failure, bronchospasm, atelectasis, pleural effusion, pneumothorax, or aspiration pneumonitis. Of 2,464 patients enrolled, 252 events were observed in 123 patients (5%). The 30-day mortality rate was significantly higher in patients suffering a PPC than those who did not (19.5% vs. 0.5%). Additionally, regression modeling identified seven independent risk factors: low preoperative arterial oxygen saturation, acute respiratory infection within one month of surgery, advanced age, preoperative anemia, upper abdominal or intrathoracic surgery, surgical duration more than two hours, and emergency surgery.
The study was underpowered to assess the significance of all potential risk factors for PPCs. Also, given the number of centers involved in the study, variation in assessing development of PPCs is likely.
Bottom line: Postoperative pulmonary complications are a major cause of morbidity and mortality. Seven independent risk factors were identified for the development of PPCs, which could be useful in preoperative risk stratification.
Citation: Canet J, Gallart L, Gomar C, et al. Prediction of postoperative pulmonary complications in a population-based surgical cohort. Anesthesiology. 2010;113(6):1338-1350.
Code Status Orders and Goals of Medical ICU Care
Clinical question: How familiar are patients in the medical ICU (MICU) or their surrogates regarding code-status orders and goals of care, what are their preferences, and to what extent do they and their physicians differ?
Background: Discussions about code-status orders and goals of care carry great import in the MICU. However, little data exist on patients’ code-status preferences and goals of care. More knowledge of these issues can help physicians deliver more patient-centered care.
Study design: Prospective interviews.
Setting: Twenty-six-bed MICU at a large Midwestern academic medical center.
Synopsis: Data were collected from December 2008 to December 2009 on a random sample of patients—or their surrogates—admitted to the MICU. Of 135 eligible patients/surrogates, 100 completed interviews. Patients primarily were white (95%) and from the ages of 41 to 80 (79%).
Only 28% of participants recalled having a discussion about CPR and one goal of care, while 27% recalled no discussion at all; 83% preferred full code status but had limited knowledge of CPR and its outcomes in the hospital setting. Only 4% were able to identify all components of CPR, and they estimated the mean probability of survival following in-hospital arrest with CPR to be 71.8%, although data suggest survival is closer to 18%. There was a correlation between a higher estimation of survival following CPR and preference for it. After learning about the evidence-based likelihood of a good neurologic outcome following CPR, 8% of the participants became less interested.
Discrepancies between patients’ stated code status and that in the medical record was identified 16% of the time. Additionally, 67.7% of participants differed with their physicians regarding the most important goal of care.
Bottom line: Discussions about code status and goals of care in the MICU occur less frequently than recommended, leading to widespread discrepancies between patients/surrogates and their physicians regarding the most important goal of care. This is compounded by the fact that patients and their surrogates have limited knowledge about in-hospital CPR and its likelihood of success.