Post-ROSC peripheral perfusion index discriminates 30-day survival after out-of-hospital cardiac arrest.

BACKGROUND: Prognostication after an out-of-hospital cardiac arrest (OHCA) remains a challenge. The peripheral-derived perfusion index (PI) is a simple and non-invasive way to assess perfusion. We sought to assess whether the PI was able to discriminate the prognosis of patients resuscitated from an OHCA. METHODS: All the reports generated by the manual monitor/defibrillator (Corpuls 3 by GS Elektromedizinische Geräte G. Stemple GmbH, Germany) used for all the OHCAs who achieved ROSC treated by our Emergency Medical Service from January 2015 to December 2018 were reviewed. The mean PI value of each minute after ROSC was automatically provided by the device and the mean value of 30 min of monitoring (MPI30) was calculated. Pre-hospital data were collected according to the Utstein 2014 recommendations. RESULTS: Among 1,909 resuscitation attempts, ROSC was achieved in 346 and it was possible to calculate an MPI30 in 164. MPI30 was higher in the patients who survived at 30 days [1.6 (95% CI 1.2-2.1) vs 1 (95% CI 0.8-1.3), p = 0.0017]. At the multivariable Cox regression model, after correction for shockable rhythm, witnessed status, bystander CPR, age, and blood pressure, MPI30 was found to be an independent predictor of both 30-day mortality [RR 0.83 (95% CI 0.69-0.99), p = 0.036] and 30-day mortality or poor neurologic outcome [RR 0.85 (95% CI 0.72-0.99), p = 0.04]. Overall 30-day survival with good neurologic outcome was significantly different in the three tertiles [T1: 0.1-0.8; T2: 0.9-1.8 and T3: 1.82-7.8, log-rank p = 0.007]. CONCLUSION: The post-ROSC peripheral perfusion index was found to be an independent predictor of 30-day mortality or poor neurologic outcome. It could help prognostication in OHCA patients.

Positioning issues of spinal surgery during pregnancy.

BACKGROUND: Albeit rarely, different spinal pathologies may require surgical treatment during pregnancy. The management of such cases poses a series of challenges, starting with adequate body positioning. OBJECTIVE: To illustrate limits and indications of the different surgical positioning strategies for pregnant women undergoing spine surgery. METHODS: We performed a systematic review of literature about the described surgical positioning strategies used for spinal surgery during pregnancy, discussing advantages, indications, and limits. We also describe of a novel three-quarters prone positioning for dorsal pathology. RESULTS: The surgical strategy may vary according to several factors, such as the location and the nature of the underlying pathology, the stage of the pregnancy, and the clinical condition of mother and fetus. During the second trimester, the habitus begins to raise issues about both the abdominal and the aortocaval compressions. The third trimester implies neonatal and ethical challenges: both fetal monitoring and the possibility of urgently proceeding to delivery should be guaranteed. The prone position is feasible during the second trimester provided an adequate frame is supplied. The lateral or three-quarters prone positioning may offer the safest option in the last stages of pregnancy, whereas both supine and sitting positionings are anecdotal. CONCLUSIONS: Gestational age, surgical comfort and maternofetal safety should be balanced by a multidisciplinary team to tailor an adequate positioning plan for each individual case. The early third trimester is the more limiting period because of the womb hindrance favoring lateral or three-quarters positionings.

EA-DIVA score (Enhanced Adult DIVA score): A new scale to predict difficult preoperative venous cannulation in adult surgical patients.

INTRODUCTION: Providing peripheral intravenous access is one of the most commonly performed technical procedures in hospitals and it is mandatory for all patients undergoing surgery. Obtaining peripheral intravenous access may be difficult and this may cause delays in patient management, increased risk of adverse events and hospitalization costs. The aim of this study is to develop and validate a scale to identify patients at risk of peripheral difficult intravenous access, applicable to any adult patient undergoing surgery. METHODS: A monocentric, observational study was conducted on adult surgical patients between September 2015 and April 2016. The primary outcome was the identification of parameters that could detect peripheral difficult intravenous access. Several parameters were taken into consideration, including patient details, healthcare professionals, and setting. The sample data were randomly divided into two subsets: a multivariate analysis was performed on the first one to define the Enhanced Adult DIVA score; the second subset was used for its validation. RESULTS: We included 1006 patients (607 in the derivation, 399 in the validation cohorts respectively). The peripheral intravenous access was difficult in 127 patients (12.6%). The EA-DIVA score was devised with a score ranging from 0 to 12. The receiver operating characteristic (ROC) curve area under the curve (AUC) in the validation subset was 0.94. The validation study suggested a cut-off score of 8, which maximizes sensitivity (85.5%) and specificity (89.2%) in detecting difficult peripheral intravenous access, with a positive predictive value of 56% and a negative predictive value of 97.5%. DISCUSSION: The EA-DIVA score is a simple tool to identify patients at high risk of peripheral difficult intravenous access. Its implementation is recommended in order to optimize peripheral intravenous access procedures.