Acid Base Disorder

This study aims to better understand how mechanical ventilation settings affect patients admitted to the coronary care unit after cardiac arrest or with cardiogenic shock. These patients often require mechanical ventilation, but current guidelines provide limited evidence on the best approach. Improper ventilation settings can lead to acid-base imbalances, such as respiratory acidosis or alkalosis, which may worsen patient outcomes. The retrospective analysis will include 100 adult patients (50 post-cardiac arrest and 50 with cardiogenic shock) who were mechanically ventilated upon admission. The study has two main objectives: Determine how often acid-base disorders occur in these patients and describe their characteristics. Compare the initial ventilator settings chosen by clinicians with those suggested by VentilO, a decision-support algorithm. The investigators will evaluate the potential effect of the VentilO recommendations on the first arterial (or capillary) blood gases compared to the real settings. This information will help refine the algorithm and guide future research on improving ventilation strategies for critically ill cardiac patients. Participation does not involve any intervention, as the study uses existing medical records.

Pneumoperitoneum during laparoscopic bariatric surgery induces carbon dioxide absorption and may lead to perioperative alterations in acid-base balance. Serum bicarbonate (HCO₃-) plays a central role in metabolic compensation; however, the clinical relevance of perioperative bicarbonate changes remains insufficiently defined. This prospective observational study aims to evaluate the association between pneumoperitoneum duration and perioperative serum bicarbonate change (ΔHCO₃-), and to investigate whether ΔHCO₃- is associated with early discharge readiness at 48 hours (DR-48) following laparoscopic bariatric surgery. Patients undergoing laparoscopic sleeve gastrectomy or Roux-en-Y gastric bypass will be enrolled consecutively. No alteration of routine clinical care will occur.

The goal of this study is to test a prototype genomic blood analysis for identifying rare diseases in infants hospitalized in the neonatal intensive care unit (NICU). The main question it aims to answer is: Does the prototype accurately identify genetic variation(s) associated with an infant's health condition? Researchers will compare the prototype's gene identification to traditional genome sequencing methods of gene identification. Participants will be asked to provide a very small (one-tenth of a teaspoon) sample of blood, one-time.