Israel Medical Association Journal

Background: Acute kidney injury (AKI) is a risk factor for morbidity and mortality during critical illness especially in very old patients admitted to intensive care units.

Objectives: To identify prognostic markers for AKI patients.

Methods: This single-center retrospective study was based on a patient registry of a medical intensive care unit. Hospital records of patients aged 80 years or older admitted between 2005 and 2015 were examined. Patients who developed AKI according to Kidney Disease: Improving Global Outcomes (KDIGO) guidelines within 4 days of admission were included in this study.

Results: The study comprised 96 patients with AKI and 81 age- and sex-matched controls without AKI. Mean acute physiology and chronic health evaluation (APACHE) II score was 30 with an ICU mortality of 27% in very old patients with AKI. The odds ratio of hospital mortality for these patients was 5.02 compared to controls (49% vs. 16%). APACHE II score and fluid balance in the first 2 days of ICU admission were the strongest predictors of ICU mortality with an area under the receiver operating characteristic of 0.76. Of the 47 patients with AKI who survived hospital admission, 30 were discharged home.

Conclusions: Mortality was increased in very old ICU patients with AKI. Among survivors, two-thirds returned home.

Background: In Israel, critically ill patients are ventilated and managed in intensive care units or general wards.

Objectives: To compare the mortality rates and long-term cognitive and functional outcomes of ventilated patients who underwent tracheostomy insertion in the Medical ICU (MICU) versus those cared for in the in-patient wards.

Methods: The study comprised 170 patients who underwent percutaneous dilatational tracheostomy (PDT) over an 18-month period in the MICU (n=102) and in in-patient wards (internal medicine and neurology) (n=68). Telephone interviews were conducted with living patients and/or their relatives at least 6 months after discharge from the hospital.

Results: Ward patients were 10 years older than ICU patients undergoing PDT (P = 0.003). The length of stay (LOS) in the wards was longer than in the ICU (P < 0.001), whereas the total LOS in the hospital was similar (P = 0.43). ICU mortality was lower than in the wards (P = 0.001) but hospital mortality was comparable between the two groups (P = 0.17). At 6 months follow-up more ICU patients were fully conscious, weaned from ventilation, and decannulated. More patients in the ICU group were at home and were independent or had mildly impaired activities of daily living. More patients in the ward group were residing in long-term care facilities with functional limitations.

Conclusions: MICU patients who undergo tracheostomy may have a good long-term functional and cognitive outcome. More studies are needed to further assess long-term outcomes in these patients.