Does the pleth variability index have any predictive value for intraoperative respiratory problems in bariatric surgery?

Background/aim: We aimed to search the relationship between the preoperative PVI (pleth variability index) and intraoperative respiratory parameters to reveal whether PVI can be used as a prediction tool in bariatric surgery.

Materials And Methods: Forty patients undergoing bariatric surgery were included. Noninvasive pleth variability index measured via finger probe before induction of general anesthesia.

Can chin-nape circumference and the ratio of neck circumference to chin-nape circumference predict difficult mask ventilation or difficult intubation in obese patients?

We aimed to evaluate the success of the ratio of chin-nape circumference (CNC) and neck circumference (NC) to CNC in predicting difficult mask ventilation (DMV) or difficult intubation (DI). Eighty-seven obese patients (body mass index ≥ 30) were evaluated between September 15, 2019 and September 15, 2020. Mallampati score, mouth opening, upper lip bite test, distance between incisors, thyromental distance (TMD), sternomental distance (SMD), and thyromental height were recorded.

Comparison of two sedation protocols on intraocular pressure and hemodynamic responses during colonoscopy.

Objective: Colonoscopy is one of the most frequently performed interventional endoscopic procedures for diagnosis and treatment. During the procedure, the increase in intraabdominal pressure can cause undesirable spikes in intraocular pressure. In the literature, there are no studies on agent combinations that cause the least effect on intraocular pressure and hemodynamic response in colonoscopic procedures, which are performed more frequently in the elderly, the patient group at the greatest risk for glaucoma.

Effect of Uterine Fundal Pressure on Maternal Intraocular Pressure in Cesarean Delivery: Comparison of Regional and General Anesthesia.

Purpose: To evaluate the intraocular pressure (IOP) changes accompanying fundal pressure during a cesarean-section procedure under both regional and general anesthesia.

Methods: In total, 60 women scheduled for elective cesarean section, none of them diagnosed with ocular problems, were enrolled in the study. Patients underwent cesarean section under either general (group G, n=30) or regional anesthesia (group S, n=30) according to their choice.