Sodium-glucose cotransporter 2 inhibitor-associated perioperative ketoacidosis: a systematic review of case reports.

Although the recommended preoperative cessation period for sodium-glucose cotransporter 2 inhibitors (SGLT2is) changed in 2020 (from 24 h to 3-4 days preoperatively) to reduce the risk of SGLT2i-associated perioperative ketoacidosis (SAPKA), the validity of the new recommendation has not been verified. Using case reports, we assessed the new recommendation effectiveness and extrapolated precipitating factors for SAPKA. We searched electronic databases up to June 1, 2022 to assess SAPKA (blood pH < 7.3 and blood or urine ketone positivity within 30 days postoperatively in patients taking SGLT2i). We included 76 publications with 99 cases. The preoperative SGLT2i cessation duration was reported for 59 patients (59.6%). In all cases with available cessation periods, the SGLT2is were interrupted < 3 days preoperatively. No SAPKA cases with > 2-day preoperative cessation periods were found. Many case reports lack important information for estimating precipitating factors, including preoperative SGLT2i cessation period, body mass index, baseline hemoglobin A1c level, details of perioperative fluid management, and type of anesthesia. Our study suggested that preoperative SGLT2i cessation for at least 3 days could prevent SAPKA. Large prospective epidemiologic studies are needed to identify risk factors for SAPKA.

Venoarterial extracorporeal membrane oxygenation for septic cardiomyopathy caused by Pasteurella multocida infection: a case report.

Pasteurella is a gram-negative coccobacillus that is commonly transmitted through cat and dog bites and causes various diseases in humans. In the present case, kissing an animal caused Pasteurella multocida infection, leading to sepsis and cardiogenic shock. We used venoarterial extracorporeal membrane oxygenation (VA-ECMO) to support the cardiovascular system until recovery. A 62-year-old man with no relevant history was referred to our hospital with a 1-day history of sore throat and fever. He was diagnosed with cervical cellulitis and later developed septic shock, which necessitated catecholamine administration and intubation. It was subsequently revealed that the patient had Pasteurella multocida bacteremia and kept a pet dog at home. In addition to sepsis, the patient experienced refractory cardiogenic shock and was unresponsive to medical treatment; therefore, VA-ECMO was initiated. After its introduction, the patient's hemodynamic status improved, and he was weaned from extracorporeal circulation after 6 days. He was discharged home and resumed his former life 50 days later. Pasteurella multocida infection can cause sepsis followed by severe cardiac dysfunction in healthy adults. Therefore, VA-ECMO may be a useful treatment option in patients with sepsis-induced myocardial dysfunction and refractory cardiogenic shock.

Use of electrical muscle stimulation body massager (EMS-BMs) improves deep venous blood flow.

We investigated whether using electrical muscle stimulation body massagers (EMS-BMs) for the passive contraction of the lower extremity muscles reduces venous stasis in the deep veins of the lower extremities. In this randomized crossover design study of 20 healthy volunteers between November 2018 and February 2019, we measured both the popliteal and femoral vein peak velocities (PV, cm/s) and blood flow volumes (BFV,mL/min), using pulsed-wave Doppler ultrasound at rest (baseline), and at 2 and 10 min after starting EMS-BM use. Two EMS types: types A (two small pads) and B (one large pad) devices respectively, were examined. The PVs of the femoral (A: 23±7, B: 25±8) and popliteal (A: 26±12, B: 27±12) veins and BFV of types A (107±46) and B (141±88) of the femoral vein were significantly increased compared to the baseline (PV of femoral vein: 19±9, PV of popliteal vein: 14±5, BFV of popliteal vein: 81±46) (P<0.01). No significant differences occurred between the devices in the PV or BFV at either 2 or 10 min. Regardless of the type of stimulation or the shape of the pad, contraction of the lower limb muscles by EMS-BM effectively reduces venous stasis in the lower limb.

A combination of molecular probe-tandem electrospray ionization mass spectrometry: a technique for tracing structural changes in phospholipid hydroperoxides.

An ethyl-labeled phosphatidylcholine hydroperoxide (PC-OOH/Et 2) was synthesized as a molecular probe for naturally occurring PC-OOH 1. Applying the precursor ion scan mode in tandem ESI mass spectrometry at m/z 198, a signal of the PC-OOH/Et 2 alone could be selectively detected even in the presence of a large excess of a complex mixture of phospholipids in the blood. Furthermore, molecular species that formed from PC-OOH/Et 2 by its degradation in the blood were also observed in the same spectrum. Since the molecular probe-and-mass spectrometry-assisted analytical method presented herein requires no separation process by HPLC or TLC and is speedy, requiring less than 1 h, it may be useful in lipid analysis.