Effect of Artificial Intelligence on Nutritional Status of children post cardiac surgery; A Randomized Controlled Trial (Preprint)

BACKGROUND Malnutrition is the most common problem in congenital heart diseases patients. Health based mobile applications play an important role in planning and tracking of diet for better nutritional status OBJECTIVE To assess the effect of artificial intelligence on nutritional status of children post cardiac surgery in comparison to usual care group. To assess usefulness of diet related mobile application in comparison to usual care group. METHODS This is a two arm randomized controlled trial that was conducted at a Tertiary Care Hospital, Rawalpindi. The study duration was 6 months from February 2021 till July 2021. Sample size was calculated to be 88. Intervention group was given a diet related mobile application and usual care group was handed a pamphlet with diet instructions on discharge. RESULTS Mean weight of all participants was 15 ± 5.7 kg at the time of discharge whereas at the end of 8th week mean weight of the participants in usual care group was 16.5 ± 7.2 kg and intervention group was 17.1 ± 5 kg. Average calories consumed by usual care group was 972 ± 252 kcal and 1000.75 ± 210 kcal by intervention group after 8 weeks of discharge. Average proteins consumed by the usual care group was 34.3 ± 12.5 grams and 39± 6.4 grams by intervention group after 8 weeks of discharge. At the end of intervention preferred diet planning tool for 79% of the participants was mobile application. At 8th week 93% of the participants considered the visual cues useful, 80% think that the mobile application language was understandable, 79% of the participants think nutritional goal setting is a useful feature in mobile application and 55% of the participants think the recipes in the application were useful. CONCLUSIONS The study showed strength for the future of scalable modern technology for self-nutrition monitoring. There was slight increase in the weight and nutritional intake of both groups as interventions period was limited. CLINICALTRIAL Study was registered on clinicaltrial.gov website with trial identity number NCT04782635.

Microbiology of Post-Cardiac Surgery Infections in Children with Congenital Heart Diseases, A Single-Center Experience, Mashhad, Iran

Background: Children who have undergone cardiac surgeries due to congenital heart disease are prone to various kinds of infections. Objectives: This study was done to investigate the prevalence of nosocomial infections and microbiology of post-cardiac surgery infections in pediatric patients with congenital heart disease (CHD). Methods: In this cross-sectional study, the epidemiology and microbiology of post-cardiac surgery for pediatric patients with CHD at Imam Reza Hospital of Mashhad University of Medical Sciences between 2014 and 2017 were investigated. Demographic and clinical information was recorded, and the findings were analyzed using SPSS 16. Results: Out of 1128 patients with open heart surgery during the four years of the study, 135 patients, including 80 males (60.1%) and 55 females (39.9%) with a mean age of 8.06 ± 3.86 months, were enrolled in the study. The prevalence of infection was 11.96%. The most common isolated bacteria were Acinetobacter (19/135, 14.1%), Pseudomonas spp. (13/135, 9.6%), and Enterobacter (13/135, 9.6%) as Gram-negative ones and Corynebacterium diphtheria (10/135, 7.4%) and Staphylococcus epidermidis (10/135, 7.4%) as Gram-positive types. Candida albicans (14/135, 10.4%) were also the most frequent fungi. The frequency of infection-causing masses did not differ significantly between different cardiac abnormalities (P = 0.831), sex (P = 0.621), age (P = 0.571), and weight (P = 0.786) groups. Also, the duration of hospitalization, intubation, bypass time, and urinary catheterization in positive culture cases were significantly longer than in negative cases. Conclusions: In our study, the most common infections in children who underwent heart surgery were Acinetobacter, C. albicans, Pseudomonas, and Enterobacter. It is suggested to reduce the hospitalization, intubation, bypass, and urinary catheterization time to reduce nosocomial infections in these patients and decrease treatment costs.

Tight glycaemic control and surgical site infections post cardiac surgery: a systematic review

Objective: Surgical site infection (SSI) is one of the most serious potential complications post cardiac surgery among patients with diabetes and has a number of adverse health outcomes. The literature shows discrepancies regarding the effect of different glycaemic control protocols on reducing adverse health outcomes including SSIs. The aim of this study was to conduct a systematic review that investigated the effect of the optimal range of tight glycaemic control protocols using a continuous insulin infusion on reducing the incidence of SSIs in adult patients with diabetes undergoing cardiac surgery. Method: A systematic review was conducted following the PRISMA statement and guidelines. Search terms were used to identify research studies published between 2000 and 2019 across five key databases, including CINAHL, Medline, PubMed, Cochrane Database and Google Scholar. Results: A total of 12 studies met the review inclusion criteria. The reviewed literature tended to support the implementation of a tight glycaemic control protocol, particularly in the postoperative phase, that demonstrated fewer potential complications associated with cardiac surgery. On the other hand, the literature also supported the application of a moderate glycaemic control protocol in the intraoperative phase to obtain better glycaemic stability with fewer potential complications among those patients with diabetes undergoing cardiac surgery. Conclusion: This analysis concludes that tight glycaemic control is more effective than moderate glycaemic control intraoperatively in terms of glycaemic stability among patients with diabetes undergoing cardiac surgery. Results also emphasised the importance of time-based protocol implementation to ensure better health outcomes and better quality of care for patients.

TROPONIN T AFTER CARDIAC SURGERY: WHAT IS NORMAL? A REVIEW OF THE LITERATURE

It is well established that cardiac biomarkers are universally raised post-cardiac surgery. This is due to various preoperative, intraoperative, and postoperative factors. At present, no reliable tool or model considers intraoperative and postoperative factors to predict morbidity and mortality after cardiac surgery. Troponin T as a single or serial measurement to predict postoperative mortality and morbidity, is an attractive diagnostic tool due to the direct relationship to myocardial damage and the availability of testing. Currently, there is no consensus regarding the expected release of troponin T post-cardiac surgery. From a diagnostic and prognostic point of view, troponin T testing could be beneficial in recognising high-risk patients and any imminent compilations early. Therefore, this review aims to assess the expected release profile and prognostic value of troponin T after cardiac surgery. Keywords: troponin T., CABG, MPM, SAPS

Resistance Index of the Superior Mesenteric Artery: Correlation With Lactate Concentration and Kinetics Prediction After Cardiac Surgery

Objective: This study aimed to measure blood flow changes in the superior mesenteric artery (SMA), using Doppler ultrasound, in post-cardiac surgery patients, to evaluate the correlation between the SMA resistance index (SMA-RI) and lactate concentrations.Methods: The patients' basic hemodynamics, blood gas parameters and lactate concentration were collected at admission. Simultaneously, the SMA blood flow parameters were collected using Doppler ultrasound with the patients in the supine position. The lactate concentrations were measured again at 2, 6, and 12-h time points after the first test. The length of intensive care unit stays and prognoses continued to be monitored.Results: A total of 67 patients were included. The SMA-RI correlated with the admission (r = 0.3117, P = 0.0102), 2-h (r = 0.5091, P < 0.0001), 6-h (r = 0.5061, P < 0.0001), and 12-h (r = 0.2483, P = 0.0428) lactate concentrations. The SMA-RI could predict the 2-h 10% [area under the curve (AUC) = 0.8294, P < 0.0001] and 6-h 40% lactate kinetics (AUC = 0.7708, P = 0.0012). The cut-off value was 0.83. When the SMA-RI was <0.83, the specificity and sensitivity were 86.38 and 75.56%, respectively for the prediction of the 2-h >10% lactate kinetics, and 64.71 and 75.00%, respectively, for the prediction of the 6-h >40% lactate kinetics. The lactate concentrations at admission, 2 and 6-h points were higher in the high-RI group (RI ≥ 0.83) and the intensive care unit stays were significantly longer than in the low-RI group (P = 0.0005).Conclusions: The increase in SMA-RI was associated with higher lactate concentrations and worse lactate kinetics in post-cardiac surgery patients. This may be related to intestinal hypoperfusion. The SMA-RI may be one of the indicators that should be monitored to guide resuscitation in these patients.

Usefulness of the nutrition based mobile application among children post cardiac surgery; A Randomized Controlled Trial (Preprint)

BACKGROUND Malnutrition is the most common problem in congenital heart diseases patients. Nutrition based mobile applications play an important role in planning and tracking of diet for better nutritional status. OBJECTIVE To assess usefulness of the nutrition based mobile application among children post cardiac surgery. METHODS This was a single-center, double-blinded, randomized controlled trial that was conducted at a Tertiary Care Hospital, Rawalpindi. The study duration was 6 months from February 2021 till July 2021. Sample size was calculated to be 88. Intervention group caregivers were provided with a nutrition based mobile application by a dietitian, primary objective of the mobile application was to improve /maintain nutritional status of children. Caregiver’s of children were able to choose their nutritional goals. Nutritional intake was tracked, daily and monthly insight regarding nutrients intake was provided to the user. Usual care group was handed a pamphlet with diet instructions on discharge by a dietitian. RESULTS At the end of intervention preferred diet planning tool for 79% of the participant’s caregiver was mobile application. At 8th week 93% of the caregivers considered visual cues useful, 80% thought that the mobile application language was understandable, 79% thought nutritional goal setting was a useful feature in mobile application and 55% thought the recipes in the application were useful. CONCLUSIONS The study showed strength for the future of scalable modern technology for self-nutrition monitoring. The average income status and education level of the participant’s caregivers in our study was low to average. It represented a population that has been slow to adopt new technology but our participants showed interest in mobile application and used the technology after a brief training session. CLINICALTRIAL Study was registered on clinicaltrial.gov with trial identity number NCT04782635.

A relapsed Pseudomonas stutzeri prosthetic valve endocarditis: a case report and review of the literature

Background Pseudomonas stutzeri is a nonfluorescent denitrifying bacterium widely distributed in the environment, and it has also been isolated as an opportunistic pathogen from humans. It is a Gram-negative bacterium and a common inhabitant of soil and water. Case presentation We report the case of a 51-year-old arab gentleman who has systemic lupus erythematous complicated by lupus nephritis and underwent renal transplantation twice. He underwent mitral valve replacement and 4 years later was diagnosed with prosthetic valve endocarditis caused by Pseudomonas stutzeri. Conclusions Literature review was conducted and revealed that this pathogen may be of a particular medical relevance in immunocompromised patients. Our case proves that early infection and relapse despite optimal antibiotics course are possible outcomes of Pseudomonas stutzeri endocarditis. To the best of our knowledge, this is the second case of fulminant early prosthetic valve endocarditis occurring only 1 month post-cardiac surgery with relapse despite a complete antibiotics course.