scholarly journals Preoperative warming combined with intraoperative skin-surface warming does not avoid hypothermia caused by spinal anesthesia in patients with midazolam premedication

2007 ◽  
Vol 125 (3) ◽  
pp. 144-149 ◽  
Author(s):  
Simone Maria D'Angelo Vanni ◽  
Yara Marcondes Machado Castiglia ◽  
Eliana Marisa Ganem ◽  
Geraldo Rolim Rodrigues Júnior ◽  
Rosa Beatriz Amorim ◽  
...  
Keyword(s):  
Abdominal Surgery ◽  
Spinal Anesthesia ◽  
Intramuscular Injection ◽  
Randomized Study ◽  
Skin Surface ◽  
Physical Status ◽  
Surface Warming ◽  
American Society ◽  
American Society Of Anesthesiologists ◽  
Midazolam Premedication

CONTEXT AND OBJECTIVE: Inadvertent perioperative hypothermia is common during spinal anesthesia and after midazolam administration. The aim of this study was to evaluate the effects of intraoperative skin-surface warming with and without 45 minutes of preoperative warming in preventing intraoperative and postoperative hypothermia caused by spinal anesthesia in patients with midazolam premedication. DESIGN AND SETTING: Prospective and randomized study at Hospital das Clínicas, Universidade Estadual Paulista, Botucatu. METHODS: Thirty patients presenting American Society of Anesthesiologists (ASA) physical status I and II who were scheduled for elective lower abdominal surgery were utilized. The patients received midazolam premedication (7.5 mg by intramuscular injection) and standard spinal anesthesia. Ten patients (Gcontrol) received preoperative and intraoperative passive thermal insulation. Ten patients (Gpre+intra) underwent preoperative and intraoperative active warming. Ten patients (Gintra) were only warmed intraoperatively. RESULTS: After 45 min of preoperative warming, the patients in Gpre+intra had significantly higher core temperatures than did the patients in the unwarmed groups (Gcontrol and Gintra) before the anesthesia (p < 0.05) but not at the beginning of surgery (p > 0.05). The patients who were warmed intraoperatively had significantly higher core temperatures than did the patients in Gcontrol at the end of surgery (p < 0.05). All the patients were hypothermic at admission to the recovery room (T CORE < 36° C). CONCLUSIONS: Forty-five minutes of preoperative warming combined with intraoperative skin-surface warming does not avoid but minimizes hypothermia caused by spinal anesthesia in patients with midazolam premedication.

scholarly journals Epidural Anaesthesia Saved A Patient With Multiple Co-Morbid Condition

KYAMC Journal ◽  
2017 ◽  
Vol 7 (1) ◽  
pp. 729-730
Author(s):  
Rahena Khatun ◽  
Md Zulfikar Ali
Keyword(s):  
Epidural Anaesthesia ◽  
Postoperative Recovery ◽  
Morbid Condition ◽  
Physical Status ◽  
Uncontrolled Diabetes ◽  
Life Saving ◽  
Diabetic Gangrene ◽  
American Society ◽  
American Society Of Anesthesiologists ◽  
Morbid Conditions

Epidural anaesthesia has been routinely used for many years and widely accepted as an effective mathod of pain relief . The procedure is commonly performed as a sole anaesthesic or in combination with spinal or general anaesthesia. In our case Md. Alauddin, 59 years old male was admitted in KYAMCH with complaints of diabetic gangrene of right foot with features of septicemia and he has a long history uncontrolled diabetes mellitus and hypertension leading to developed ischemia heart disease and CRF. After proper evaluation patient's physical status was graded as ASA (American society of Anesthesiologists) class-IV, and selected for above knee amputation of right lower limb but patient was unfit for anesthesia due to his co morbid conditions. As a life saving procedure the operation was done under epidural anesthesia and per- operative and postoperative recovery was uneventful.KYAMC Journal Vol. 7, No.-1, Jul 2016, Page 729-730

scholarly journals Discordant American Society of Anesthesiologists Physical Status Scoring between Anesthesiologists and Surgeons Is Correlated With Adverse Patient Outcomes: A Retrospective Cohort Study of 46284 Elective Surgical Patients

2021 ◽  
Author(s):  
Charlene Xian Wen Kwa ◽  
Jiaqian Cui ◽  
Daniel Yan Zheng Lim ◽  
Yilin Eileen Sim ◽  
Yuhe Ke ◽  
...  
Keyword(s):  
Cohort Study ◽  
Patient Outcomes ◽  
Real World ◽  
Odds Ratio ◽  
Retrospective Cohort ◽  
Clinical Factors ◽  
Physical Status ◽  
Asa Score ◽  
American Society ◽  
American Society Of Anesthesiologists

Abstract BackgroundThe American Society of Anesthesiologists Physical Status Classification (ASA) score is used for communication of patient health status, risk scoring, benchmarking and financial claims. Prior studies using hypothetical scenarios have shown poor concordance of ASA scoring among healthcare providers. However, there is a paucity of concordance studies using real-world data, as well as studies of clinical factors or patient outcomes associated with discordant scoring. The study aims to assess real-world ASA score concordance between surgeons and anesthesiologists, factors surrounding discordance and its impact on patient outcomes. MethodsThis retrospective cohort study was conducted in a tertiary academic medical center on 46284 consecutive patients undergoing elective surgery between January 2017 and December 2019. ASA scores entered by surgeons and anesthesiologists, patient demographics, and post-operative outcomes were collected. We assessed the concordance of preoperative ASA scoring between surgeons and anesthesiologists, clinical factors associated with score discordance, the impact of score discordance on clinically important outcomes, and the discriminative ability of the two scores for 30-day mortality, 1-year mortality, and intensive care unit (ICU) admission. Statistical tests used included Cohen’s weighted 𝜅 score, chi-square test, t-test, unadjusted odds ratios and logistic regression models. ResultsThe ASA score showed moderate concordance (weighted Cohen’s 𝜅 0.53) between surgeons and anesthesiologists. 15098 patients (32.6%) had discordant scores, of which 11985 (79.4%) were scored lower by surgeons. We found significant associations between discordant scores and anesthesiologist-assessed comorbidities, patient age and race. Patients with discordant scores had a higher risk of 30-day mortality (odds ratio 2.00, 95% confidence interval [CI] = 1.52-2.62, p<0.0001), 1-year mortality (odds ratio 1.53, 95% CI = 1.38-1.69, p < 0.0001), and ICU admission >24 hours (odds ratio 1.69, 95% CI = 1.47-1.94, p< 0.0001), and stratified analyses showed a trend towards higher risk when the surgeons’ ASA score was lower. ConclusionsThere is moderate concordance between surgeons and anesthesiologists in assigning the ASA classification. Discordant ASA scores are associated with adverse patient outcomes. Hence, there is a need for improved standardization of ASA scoring and cross-specialty review in ASA-discordant cases.

scholarly journals Development and validation of a predictive model for American Society of Anesthesiologists Physical Status

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Seshadri C. Mudumbai ◽  
Suzann Pershing ◽  
Thomas Bowe ◽  
Robin N. Kamal ◽  
Erika D. Sears ◽  
...  
Keyword(s):  
Predictive Validity ◽  
Research Quality ◽  
Multinomial Regression ◽  
Physical Status ◽  
Improvement Program ◽  
Variable Model ◽  
Preoperative Status ◽  
American Society ◽  
Key Indicators ◽  
American Society Of Anesthesiologists

Abstract Background The American Society of Anesthesiologists Physical Status (ASA-PS) classification system was developed to categorize the fitness of patients before surgery. Increasingly, the ASA-PS has been applied to other uses including justification of inpatient admission. Our objectives were to develop and cross-validate a statistical model for predicting ASA-PS; and 2) assess the concurrent and predictive validity of the model by assessing associations between model-derived ASA-PS, observed ASA-PS, and a diverse set of 30-day outcomes. Methods Using the 2014 American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) Participant Use Data File, we developed and internally cross-validated multinomial regression models to predict ASA-PS using preoperative NSQIP data. Accuracy was assessed with C-Statistics and calibration plots. We assessed both concurrent and predictive validity of model-derived ASA-PS relative to observed ASA-PS and 30-day outcomes. To aid further research and use of the ASA-PS model, we implemented it into an online calculator. Results Of the 566,797 elective procedures in the final analytic dataset, 8.9% were ASA-PS 1, 48.9% were ASA-PS 2, 39.1% were ASA-PS 3, and 3.2% were ASA-PS 4. The accuracy of the 21-variable model to predict ASA-PS was C = 0.77 +/− 0.0025. The model-derived ASA-PS had stronger association with key indicators of preoperative status including comorbidities and higher BMI (concurrent validity) compared to observed ASA-PS, but less strong associations with postoperative complications (predictive validity). The online ASA-PS calculator may be accessed at https://s-spire-clintools.shinyapps.io/ASA_PS_Estimator/ Conclusions Model-derived ASA-PS better tracked key indicators of preoperative status compared to observed ASA-PS. The ability to have an electronically derived measure of ASA-PS can potentially be useful in research, quality measurement, and clinical applications.

scholarly journals Outcomes after neurosurgical operations in American Society of Anesthesiologists physical status (ASA) class 5 patients

2020 ◽  
Vol 20 ◽  
pp. 100692
Author(s):  
Andreea Seicean ◽  
Sinziana Seicean ◽  
Duncan Neuhauser ◽  
Jamie Fyda ◽  
Ankit Mehta ◽  
...  
Keyword(s):  
Physical Status ◽  
American Society ◽  
American Society Of Anesthesiologists

Regulation of Proprioceptive Memory by Subarachnoid Regional Anesthesia

2000 ◽  
Vol 93 (1) ◽  
pp. 55-61 ◽  
Author(s):  
Sheldon A. Isaacson ◽  
Matthew Funderburk ◽  
Jay Yang
Keyword(s):  
Regional Anesthesia ◽  
Body Schema ◽  
Incorrect Response ◽  
Physical Status ◽  
Position Change ◽  
Limb Position ◽  
Independent Variables ◽  
American Society ◽  
American Society Of Anesthesiologists ◽  
Time Point

Background Patient perception of limb position during regional anesthesia is frequently incorrect. The existing model ascribes this misperception, or phantom sensation, as a reversion to a fixed, slightly flexed, body schema. A model was developed to evaluate the influence of limb position changes on the incidence of incorrect or phantom sensations during regional anesthesia. Methods Forty American Society of Anesthesiologists physical status I-III adult patients undergoing genitourinary procedures under subarachnoid anesthesia were assigned to a lidocaine or bupivacaine treatment group and randomly assigned to one of four time groups (1, 4, 7, and 10 min). After blockade, patients were placed supine and blinded to limb positioning manipulations. One leg was flexed and the contralateral leg extended, with leg positions subsequently reversed at the assigned time point. At 10 min, patients were asked to identify the position of each leg. Percentage of incorrect response was analyzed using a logistic regression model with two independent variables: treatment and time. A supplemental study was undertaken to evaluate the observed difference in incorrect perceptions relative to flexed first versus extended limb first sequencing. Results The inability to perceive a change in limb position under regional anesthesia is dependent on the time after the block that the position change is initiated in relation to the onset characteristics of the local anesthetic. A phantom sensation of an extended leg position clearly exists. The flexed-first limb has a significantly higher incidence of incorrect or phantom perceptions. Conclusion Proprioceptive memory involves a dynamic neuroplastic imprinting process that is influenced by limb or joint position prior to onset of regional anesthesia. This contrasts with previously held beliefs of a purely fixed body schema.

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