Infections and outcomes after cardiac surgery-The impact of outbreaks traced to transesophageal echocardiography probes.

BACKGROUND: Infections are a frequent complication of cardiac surgery. The intraoperative use of transesophageal echocardiography (TEE) may be an underrecognized risk factor for post-operative infections. The aim of this study was to investigate infection rates and outcomes after cardiac surgery in a nationwide cohort, especially in relation to periods where surface damaged TEE probes were used. METHODS: This was a retrospective, observational study at Landspitali University Hospital. All consecutive cardiac surgery patients from 1 January 2013 to 31 December 2017 were included. Patients' charts were reviewed for evidence of infection, post-operative complications or death. RESULTS: During the study period, 973 patients underwent cardiac surgery at Landspitali and 198 (20.3%) developed a post-operative infection. The most common infections were: Pneumonia (9.1%), superficial surgical site (5.7%), bloodstream (2.8%) and deep sternal wound (1.7%). Risk factors for developing an infection included: The duration of procedure, age, insulin-dependent diabetes, EuroScore II, reoperation for bleeding and an operation in a period with a surface damaged TEE probe in use. Twenty-two patients were infected with a multidrug resistant strain of Klebsiella oxytoca, 10 patients with Pseudomonas aeruginosa and two patients developed endocarditis with Enterococcus faecalis. All three pathogens were cultured from the TEE probe in use at respective time, after decontamination. The 30-day mortality rate in the patient cohort was 3.2%. CONCLUSIONS: The intraoperative use of surface damaged TEE probes caused two serious infection outbreaks in patients after cardiac surgery. TEE probes need careful visual inspection during decontamination and probe sheaths are recommended.

[Clinical aspects and follow up of suicide attempts treated in a general intensive care unit at Landspitali University Hospital in Iceland 2000-2004]. / Sjálfsvígstilraunir medhöndladar á gjörgaesludeildum Landspítala árin 2000-2004.

OBJECTIVE: To gather information on patients admitted to an intensive care unit (ICU) after a serious suicide attempt (SA). METHODS: Retrospective analysis and follow up of admittances to ICUs of Landspitali University Hospital after SA years 2000-2004. RESULTS: Admittances because of SA were 251 (4% of ICU admissions, 61% females, 39% males, mean age 36 yr +/- 14 ). Ten percent were admitted more than once and 61% had prior history of SA. Drug intoxication was the most prevalent type of SA (91%) and the most frequent complication was pneumonia. Following ICU stay 36% of the patients were admitted to psychiatric wards and 80% received psychiatric follow up. The main psychiatric diagnosis was addiction (43%). Majority of patients were divorced or single and the rate of unemployment was high. Mortality during ICU stay was 3%. During 3-7 year follow up 21 patients died (10 %), majority due to suicide. In a survival analysis only the number of tablets taken, APACHE II score and number of somatic diseases predicted risk of death. CONCLUSION: The patient group is young (36 yr), majority are women (61%), repeated attempts are frequent, social circumstances are poor and death rate after discharge from hospital is high (10%) even though the vast majority (80%) receives psychiatric follow up.This raises the question if the offered treatment is effective enough. Key words: Suicide attempt, suicide, drug poisoning, intensive care, mental health care.