Arrival In Postanesthesia Care Unit Research Articles

Effect of intraoperative aminophylline infusion on pain intensity after ureteroscopic lithotripsy: A randomized controlled study

ABSTRACT Background Aminophylline relaxes smooth muscle by inhibiting the phosphodiesterase enzyme and activating protein kinase A, and alleviates inflammation by decreasing the production of leukotrienes. We aimed to assess the effect of intraoperative intravenous (IV) aminophylline on postoperative pain in patients undergoing ureteroscopic lithotripsy. Methods A randomized, placebo-controlled trial was conducted on 50 patients who were scheduled for ureteroscopic lithotripsy under general anesthesia. Patients were divided into two equal groups. Group 1 received 4 mg/kg aminophylline diluted in 100 ml saline 0.9% IV over 20 minutes. Group 2 received saline 0.9% with a similar volume and period as the aminophylline group. Visual analogue scale (VAS) score was recorded at arrival to the post-anesthesia care unit (PACU), 1 h, 2 h, 6 h, 12 h, and 24 h after surgery. Catheter-related bladder discomfort (CRBD) was assessed at PACU arrival, 1 h, 2 h, and 6 h postoperatively. Results VAS measurements at arrival to the PACU, 1 h, 2 h, and 6 h postoperative were significantly lower in group 1 than in group 2 (p < 0.05). Total pethidine consumption in the first 24 hours postoperatively was significantly lower in group 1 (43.04 ± 14.52 mg) than in group 2 (59.32 ± 18.34 mg); p = 0.002. Aminophylline significantly decreased the incidence of moderate-to-severe CRBD at PACU arrival and 1 h after surgery (p = 0.005 and 0.007, respectively). There was no significant variation between both groups regarding side effects. Conclusions In patients undergoing ureteroscopic lithotripsy, intraoperative IV aminophylline infusion reduced postoperative pain and opioid consumption. It also decreased the incidence of early moderate-to-severe CRBD without evidence of intraoperative hemodynamic alterations or postoperative side effects.

Characterization of Speech and Language Deficits in the Postanesthesia Care Unit: A Novel, Qualitative Cognitive Assessment

BACKGROUND: Assessing recovery after general anesthesia is complicated because patients must be sufficiently arousable to pay attention to the verbal instructions probing cognitive function. All delirium screens that have been used in the postanesthesia care unit (PACU) rely heavily on a patient’s ability to process language information and respond appropriately. However, postanesthesia effects on speech-language functions have not been specifically evaluated. Here we present a novel, qualitative PACU evaluation for cognitive domains critical for speech-language functions, and we compare this assessment against a multidomain neurocognitive examination: Telephonic Montreal Cognitive Assessment (t-MoCA). This may be used to identify trajectories of neurocognitive recovery after surgery with general anesthesia and provide neuroanatomic correlates for specific deficits. METHODS: We investigated 48 patients undergoing general anesthesia for noncardiac and nonneurologic elective surgeries. Preoperatively, participants were administered our PACU speech-language assessment (PACU-SLA) and t-MoCA. Both assessments were again administered postoperatively in the PACU. Different versions of PACU-SLA were administered pre- versus postoperatively. Twenty-three participants randomly received the same t-MoCA versions (group AA), and 25 participants received different versions (group AB), pre- versus postoperatively. Assessments were administered ≥30 minutes after PACU arrival, and before PACU discharge. Statistical analysis was performed using Wilcoxon-signed-rank tests for nonnormally distributed paired data, analysis of covariance for assessing the impact of group (AA versus AB) and preoperative scores on postoperative scores, and χ2 tests for unpaired categorical data (P &lt; .05 indicating significance). RESULTS: After adjusting for preoperative scores, the postoperative t-MoCA scores of group AB were significantly lower than group AA (F[1–46] = 21.7, P &lt; .001). Similarly, the t-MoCA scores of episodic-memory (delayed-recall) decreased in group AB (F[1–46] = 48.6, P &lt; .001). For PACU-SLA, there were no postoperative changes in auditory-comprehension and object-naming scores, but a decrease was observed in (1) scores of a 9-point narrative-production task of expressive-fluency (n = 48; median [25th–75th]; preoperative: 9[9–9], postoperative: 7[7–8], P &lt; .001), and (2) total words generated in 2 30-second tasks of verbal-fluency (n = 48; median[25th–75th]: preoperative: 23[12.5–33.5], postoperative: 16.5[9.5–26.5], P &lt; .001). Scores on a 4-point sentence-repetition task were also noted to decrease postoperatively (n = 48; median[25th–75th]; preoperative: 4[3–4], postoperative: 4[3–4], P = .04). When grouping participants by preoperative cognitive status (pMCI, n = 9; preoperative normal, n = 39), both groups showed postoperative changes in verbal-fluency (F[1–46] = 6.97, P = .01) and narrative-production scores (F[1–46] = 5.51, P = .02). CONCLUSIONS: The PACU-SLA revealed lower fluency (hypophonia) with relatively intact comprehension, naming, and repetition, during recovery from general anesthesia. These deficits share features with transcortical motor aphasia.

Stir-up Regimen After General Anesthesia in the Postanesthesia Care Unit: A Nurse Led Stepped Wedge Cluster Randomized Control Trial

To implement a standardized Stir-up Regimen (deep breathing, coughing, repositioning, mobilization [moving arms/legs], assessing and managing pain and nausea) within the first 30minutes of arrival in the postanesthesia care unit (PACU), with a goal of decreasing recovery time in the immediate postanesthesia period (Phase I). A pragmatic stepped wedge cluster randomized control trial. Initially, data were collected on time in Phase I in three PACUs (control). Subsequently, the same three units were randomized to sequentially transition to the Stir-up Regimen (intervention). A stepped wedge cluster randomized control trial design was used to implement a standardized Stir-up Regimen in three PACUs in an academic hospital for adult patients who received at least 30minutes of general anesthesia. The measured outcome was the PACU time in minutes from patient arrival to when the patient met Phase I discharge criteria. Differences between intervention and control groups were evaluated using a generalized mixed-effects model. Nurses were educated about the Stir-up Regimen in team huddles, in-services, video demonstrations, email notifications and reminders, and immediate feedback at the bedside. Implementation science principles were used to assess the adoption of the Stir-up Regimen through a presurvey, postsurvey and spot-check observations in all three PACUs. A total of 5,809 PACU adult patient admissions were included: control group (n=2,860); intervention group (n=2,949); males (n=2,602), and females (n=3,206). The intervention was associated with a reduction in overall mean Phase I recovery time of 4.9minutes (95% CI: -8.4 to -1.4, P=.007). One PACU decreased time by 9.6minutes (95% CI: -15.3 to -4.0, P<.001). The other units also reduced Phase I recovery time, but this did not reach statistical significance. The spot-check observations confirmed the intervention was adopted by the nurses, as most interventions were nurse-initiated versus patient-initiated during the first 30minutes in PACU. Standardization of a Stir-up Regimen within 30minutes of patient PACU arrival resulted in decreased Phase I recovery time.

General anesthesia techniques reducing the time to satisfy phase I post-anesthesia care unit discharge criteria: Narrative review of randomized clinical trials and cohort studies studying unit bypass, supplemented with computer simulation

We performed a narrative review of bypass of the phase I post-anesthesia care unit (PACU) following general anesthesia to gain insight into ways to reduce the time until patients are ready for PACU discharge following general anesthesia. Web of Science and PubMed literature searches were performed. Publications’ references and citations were examined. The Scale for the Assessment of Narrative Review Articles’ six components were satisfied. The 14 articles included 17 studies, with nearly all patients being adults. Most studies’ patients underwent outpatient surgery with an average surgical duration of less than 100 min . The studies applied several different, but similar, criteria to choose if patients bypass the PACU. Notably, 13 of 17 studies and all five with the largest observed bypass rates used some version of the White-Song fast-track bypass criteria. Propofol was used uniformly for induction of general anesthesia. Most studies included at least one antiemetic prophylactically, a local anesthetic administered by the surgeon, and a non-opioid analgesic. The six studies with the largest observed bypass rates used remifentanil or restricted use of intraoperative opioids. We then considered economics. While achievable PACU bypass rates are insufficient to reduce healthcare costs, reducing mean PACU time markedly can lower the nursing labor costs, the total time until the last patient exits the PACU, and the incidence of patients recovering in operating rooms because of unavailable PACU nurses or beds. We examined probability distributions of brief patient recovery times by using Gas Man, an uptake and distribution software program, simulating times until reaching constant incremental reductions (0.1 %) in vessel-rich concentrations of desflurane and sevoflurane once the vaporizer was set to zero. Results showed that simulated recovery from volatile anesthetics can have recovery times appearing log-normal, as seen empirically. Thus, patients already meeting discharge criteria upon PACU arrival can be the far-left fraction of one population of patients. The implication is that the narrative review results for PACU bypass provide insight into how to have more patients with very brief times to recovery. Therefore, future studies should quantify the effectiveness and economic benefits of anesthesia practitioners aiming not for PACU bypass, per se, but rather that the patients meet PACU discharge criteria by the 5–10 min after unit arrival when the practitioner has completed PACU handoff and finished documentation in the anesthesia record.

Prediction of early postoperative pain using sleep quality and heart rate variability.

Accurate predictions of postoperative pain intensity are necessary for customizing analgesia plans. Insomnia is a risk factor for severe postoperative pain. Moreover, heart rate variability (HRV) can provide information on the sympathetic-parasympathetic balance in response to noxious stimuli. We developed a prediction model that uses the insomnia severity index (ISI), HRV, and other demographic factors to predict the odds of higher postoperative pain. We recruited gynecological surgery patients classified as American Society of Anesthesiologists class 1-3. An ISI questionnaire was completed 1 day before surgery. HRV was calculated offline using intraoperative electrocardiogram data. Pain severity at the postanesthesia care unit (PACU) was assessed with the 0-10 numerical rating scale (NRS). The primary outcome was the model's predictive ability for moderate-to-severe postoperative pain. The secondary outcome was the relationship between individual risk factors and opioid consumption in the PACU. Our study enrolled 169 women. Higher ISI scores (p = 0.001), higher parasympathetic activity (rMSSD, pNN50, HF; p < 0.001, p < 0.001, p < 0.001), loss of fractal dynamics (SD2, alpha 1; p = 0.012, p = 0.039) in HRV analysis before the end of surgery were associated with higher NRS scores, while laparoscopic surgery (p = 0.031) was associated with lower NRS scores. We constructed a multiple logistic model (area under the curve = 0.852) to predict higher NRS scores at PACU arrival. The five selected predictors were age (OR: 0.94; p = 0.020), ISI score (OR: 1.14; p = 0.002), surgery type (laparoscopic or open; OR: 0.12; p < 0.001), total power (OR: 2.02; p < 0.001), and alpha 1 (OR: 0.03; p < 0.001). We employed a multiple logistic regression model to determine the likelihood of moderate-to-severe postoperative pain upon arrival at the PACU. Physicians could personalize analgesic regimens based on a deeper comprehension of the factors that contribute to postoperative pain.

The Effectiveness of Intraoperative Thoracic Epidural Analgesia in Major Abdominal and Thoracic Surgery and Its Prediction of Severe Pain at Discharge from the Post-Anesthetic Care Unit: A Prospective Cohort Study

Objective: To assess the factors associated with ineffective thoracic epidural analgesia (iTEA) in the post-anesthesia care unit (PACU) among patients requiring TEA. Material and Methods: This prospective cohort was conducted on 146 patients requiring post-operative TEA. The verbal numeric rating scale (VNRS) was employed to assess TEA effectiveness on PACU arrival at 10, 20, and 30 minutes after surgery; iTEA was determined if the VNRS score was more than 3 and 4 at rest and during activity, respectively. The patient characteristics, and intra- and post-operative epidural management were collected. The risk factors of iTEA were evaluated using mixed-effects models. Moreover, factors associated with severe pain at PACU discharge were evaluated using logistic regression analyses. Results: The incidence of iTEA on PACU arrival, and at 10, 20, and 30 minutes after PACU arrival were 53.4%, 51.4%, 50.7%, and 36.3%, respectively. Intra-operative intravenous morphine supplementation and the cumulative fentanyl equivalent dose (every 10 mcg) were significantly associated with preventing the risk of iTEA on PACU arrival (OR 0.27; 95% CI=0.07-0.92) and during PACU stay (OR 0.87; 95% CI=0.77-0.97) compared to those who did not receive opioids. Moreover, iTEA on PACU arrival was a significant risk for severe pain at 30 minutes (adjusted OR 4.77; 95% CI=1.57-18.10). Conclusion: This study demonstrates a high incidence of iTEA immediately after surgery, and that intravenous opioid supplementation during and after surgery reduces the risk of iTEA. Lastly, iTEA on PACU arrival is a strong predictor of severe pain at discharge from PACU.

Incidence of postoperative residual neuromuscular blockade - A multicenter, observational study in Portugal (INSPIRE 2).

Although the use of neuromuscular blocking agents (NMBAs) optimizes surgical conditions and facilitates tracheal intubation, it can lead to residual neuromuscular blockade (RNMB), with postoperative complications. This study aimed to assess RNMB incidence and management in Portugal. Prospective observational study of patients admitted for elective surgery requiring general anesthesia with nondepolarizing NMBAs between July 2018 and July 2019 at 10 Portuguese hospitals. The primary endpoint was the proportion of patients arriving at postanesthesia care unit (PACU) with a TOF ratio <0.9. A total of 366 patients were included, with a median age of 59 years, and 89.1% classified as ASA II or III. Rocuronium was the most used NMBA (99.5%). A total of 96.2% of patients received a reversal agent, 96.6% of which sugammadex and 3.4% neostigmine. Twenty patients displayed a TOF ratio <0.9 at PACU arrival, representing an RNMB incidence of 5.5% (95% CI, 3.1%-7.8%). Only two patients displayed a TOF ratio <0.7. RNMB incidence was 16.7% with neostigmine and 5.3% with sugammadex (P = .114). In patients with intraoperative neuromuscular blockade (NMB) monitoring, RNMB incidence was 5% (95% CI, 2%-8%), which varied significantly according to the type of monitoring (P = .018). Incidence of adverse events was 3.3% (2 severe and 10 moderate). The reported overall incidence of 5.5% is numerically lower than results from similar observational studies. An appropriate pharmacological neuromuscular reversal strategy, guided by quantitative neuromuscular monitoring, has the potential to achieve even better results, converting RNMB from an unusual to a very rare or even inexistent event.

Risk factors for postoperative hypoxemia during transport to the postanesthesia care unit and influence of transport monitoring : A retrospective propensity score-matched databank analysis

Within acentral operating room area, after general anesthesia (GA) patients are at risk of hypoxemia during transport to the postanesthesia care unit (PACU); however, specific risk factors have not been conclusively clarified and uniform recommendations for monitoring vital signs during transport within acentral operating room area complex do not exist. The purpose of this retrospective database analysis was to identify risk factors for hypoxemia during this transport and to determine whether the use of transport monitoring (TM) affects the initial value of peripheral venous oxygen saturation (SpO2) in the PACU. This analysis was performed on aretrospectively extracted dataset of procedures in GA within acentral operating room area of atertiary care hospital from 2015 to 2020. The emergence from GA was conducted in the operating room with subsequent transport to the PACU. The transport distance was between 31and 72m. Risk factors for initial hypoxemia in the PACU, defined as peripheral oxygen saturation (SpO2) below 90%, were determined using multivariate analysis. After splitting the dataset into patients without TM (group OM) and with TM (group MM) and propensity score matching, the influence of TM on initial SpO2 and the Aldrete score after arrival in the PACU were examined. From atotal of 22,638 complete datasets included in the analysis, 8 risk factors for initial hypoxemia in PACU were identified: age > 65years, body mass index (BMI) > 30 kg/m2, chronic obstructive pulmonary disease (COPD), intraoperative airway driving pressure (∆p) > 15 mbar and positive endexpiratory pressure (PEEP) > 5 mbar, intraoperative administration of along-acting opioids, first preoperative SpO2 < 97%, and last SpO2 < 97% measured after emergence from anesthesia before transport. At least 1 risk factor for postoperative hypoxemia was present in 90% of all patients. After propensity score matching, 3362 datasets per group remained for analysis of the influence of TM. Patients transported with TM revealed ahigher SpO2 at PACU arrival (MM 97% [94; 99%], OM 96% [94; 99%], p < 0.001). In a subgroup analysis, this difference between groups remained in the presence of one or more risk factors (MM 97% [94; 99%], OM 96% [94; 98%], p < 0.001, n = 6044) but was not detectable in the absence of risk factors for hypoxemia (MM 97% [97; 100%], OM 99% [97; 100%], p < 0.393, n = 680). Furthermore, the goal of an Aldrete score > 8 at PACU arrival was achieved significantly more often in monitored patients (MM 2830 [83%], OM: 2665 [81%], p = 0.004). Critical hypoxemia (SpO2 < 90%) at PACU arrival had an overall low occurrence within propensity matched datasets and showed no difference between groups (MM: 161 [5%], OM 150 [5%], p = 0.755). According to these results, consistent use of TM leads to ahigher SpO2 and Aldrete score at PACU arrival, even after a short transport distance within an operating room area. Consequently, it appears to be reasonable to avoid unmonitored transport after general anesthesia, even for short distances.

Evaluation of a Protocol for the Management of Maintenance and Reversal of Rocuronium Block Using Neostigmine or Sugammadex.

Postoperative residual neuromuscular blockade (PRNB) is defined as an adductor pollicis train-of-four ratio (TOFR) <0.9. It is a common postoperative complication when nondepolarizing muscle relaxants are either not reversed or reversed with neostigmine. PRNB has been reported in 25% to 58% of patients who receive intermediate-acting nondepolarizing muscle relaxants, and it is associated with increased morbidity and decreased patient satisfaction. We conducted a prospective descriptive cohort study during the implementation of a practice guideline that included the selective use of sugammadex or neostigmine. The primary study aim of this pragmatic study was to estimate the incidence of PRNB at arrival to the postanesthesia care unit (PACU) when the practice guideline is followed. We enrolled patients undergoing orthopedic or abdominal surgery requiring neuromuscular blockade. Rocuronium administration was guided by surgical requirements and based on ideal body weight, with dose reductions for women and/or age >55 years. Only qualitative monitoring was available to the anesthesia providers, and selection of sugammadex or neostigmine was guided by tactile assessments of the response to train-of-four (TOF) stimulation by a peripheral nerve stimulator. Neostigmine was administered if no fade was detected in the TOF response at the thumb. Deeper blocks were reversed with sugammadex. The prespecified primary and secondary end points were the incidence of PRNB at arrival to the PACU, defined as a normalized TOFR (nTOFR) < 0.9, and severe PRNB, defined as nTOFR <0.7 on arrival to the PACU. Anesthesia providers were blinded to all quantitative measurements made by research staff. Analysis included 163 patients, and 145 underwent orthopedic and 18 abdominal surgeries. Of the 163 patients, 92 (56%) were reversed with neostigmine and 71 (44%) with sugammadex. The overall incidence of PRNB at PACU arrival was 5 of 163 or 3% (95% confidence interval [CI], 1-7). The incidence of severe PRNB in PACU was 1% (95% CI, 0-4). Three of the 5 subjects with PRNB had TOFR <0.4 at time of reversal but were given neostigmine since anesthesia providers detected no fade by qualitative assessment. The use of a protocol that specifies rocuronium dosing and selective use of sugammadex versus neostigmine based on qualitative assessment of TOF count and fade allowed us to achieve an incidence of PRNB of 3% (95% CI, 1-7) at PACU arrival. Quantitative monitoring may be needed to further reduce this incidence.

Erector Spinae Plane Block With Liposomal Bupivacaine: Analgesic Adjunct in Adult Pectus Surgery

IntroductionPain management may be challenging in patients undergoing pectus excavatum (PE) bar removal surgery. To enhance recovery, opioid sparing strategies with regional anesthesia including ultrasound-guided erector spinae plane block (ESPB) have been implemented. The purpose of this study was to evaluate the safety and efficacy of bilateral ESPB with a liposomal bupivacaine/traditional bupivacaine mixture as part of an enhanced patient recovery pathway. Materials and methodsA retrospective review of adult patients who underwent PE bar removal from January 2019 to December 2020 was performed. Perioperative data were reviewed and recorded. Patients who received ESPB were compared to historical controls (non-ESPB patients). ResultsA total of 202 patients were included (non-ESPB: 124 patients; ESPB: 78 patients). No adverse events were attributed to ESPB. Non-ESPB patients received more intraoperative opioids (milligram morphine equivalents; 41.8 ± 17.0 mg versus 36.7 ± 17.1, P = 0.05) and were more likely to present to the emergency department within 7 d postoperatively (4.8% versus 0%, P = 0.05) when compared to ESPB patients. No significant difference in total perioperative milligram morphine equivalents, severe pain in postanesthesia care unit (PACU), time from PACU arrival to analgesic administration, PACU length of stay, or postprocedure admission rates between groups were observed. ConclusionsIn patients undergoing PE bar removal surgery, bilateral ESPB with liposomal bupivacaine was performed without complications. ESPB with liposomal bupivacaine may be considered as an analgesic adjunct to enhance recovery in patients undergoing cardiothoracic procedures but further prospective randomized clinical trials comparing liposomal bupivacaine to traditional local anesthetics with and without indwelling nerve catheters are necessary.

A comparative study between the use of dexmedetomidine vs. dexamethasone as adjuvants to bupivacaine in ultrasound-guided transversus abdominis plane block for postoperative pain relief in patients undergoing lower abdominal surgeries

Background &amp; objective: Transversus abdominis plane (TAP) block using local anesthetics is associated with relatively shorter duration of action, and thus additional analgesic drugs are required in the postoperative period. We compared the efficacy and duration of postoperative analgesia achieved with using dexmedetomidine or dexamethasone as adjuvants to bupivacaine in TAP block for lower abdominal surgeries.&#x0D; Methodology: We enrolled 45 adult patients aged from 20-60 y, and randomly divided them into three equal groups. Group A received ultrasound guided TAP block with 0.25% bupivacaine 20 ml plus 4 mg dexamethasone on each side. Group B received 0.25% bupivacaine 20 ml plus dexmedetomidine 0.5 µg/kg on each side, and Group C (control group) patients received only 0.25% bupivacaine 20 ml on each side. Postoperative pain was assessed with VAS on arrival in post-anesthesia care unit (PACU), at 2 h, 6 h, 12 h, 18 h, and at 24 h postoperatively. Duration of analgesia was the time from drug injection to the time of first rescue of analgesia was recorded.&#x0D; Results: Mean duration to first dose of rescue analgesia among patients of dexmedetomidine group (Group B) was significantly prolonged as compared to dexamethasone group and bupivacaine only group. Regarding postoperative pain scores there were no statistically significant difference between the three groups; except at 6 h between the A and B groups and the control group. Both dexamethasone group and dexmedetomidine group showed better pain control than bupivacaine only at 6 h interval.&#x0D; Conclusion: Dexmedetomidine added to bupivacaine in ultrasound-guided transversus abdominis plane block for postoperative pain relief in patients undergoing lower abdominal surgeries prolongs the time to initial postoperative pain presented by time to first rescue analgesic demand than dexamethasone added to bupivacaine; the shortest time to first rescue analgesic was observed in bupivacaine alone group.&#x0D; Abbreviations: TAP: Transversus abdominis plane block; LA: Local anesthetic; PACU: Post anesthesia care unit; VAS: Visual Analogue Scale; ASA: American Society of Anesthesiologists; SD: Standard deviation; IQR: Inter quartile range.&#x0D; Citation: Sobhy YS, Gadalla RR, Nofal WH, Saleh MAE, Abdou KM. A comparative study between the use of dexmedetomidine .vs dexamethasone as adjuvants to bupivacaine in ultrasound-guided transversus abdominis plane block for postoperative pain relief in patients undergoing lower abdominal surgeries. Anaesth. pain intensive care 2022;26(5):681–688; DOI: 10.35975/apic.v26i5.2031

The Effect of Non-pharmacological Modalities for Pain, Anxiety and Length of Stay in PACU

<h3>Introduction</h3> Pain and anxiety are common post-operative complications in the Post-Anesthesia Care Unit (PACU) that can have negative implications on both short-term and long-term recovery including increased morbidity, prolonged hospitalization, and prolonged use of opioids ¹. Studies have demonstrated beneficial effects of nonpharmacologic therapies, like soothing music, on post-operative pain and anxiety. The use of perioperative music seems to be safe and patient-friendly ^{2, 3, 4}. <h3>Identification of the problem</h3> In line with current literature, increased pain and anxiety in the post-operative period is a commonly encountered issue in this Midwest teaching hospital's PACU. While pharmacological and non-pharmacological interventions are available for RNs to use to manage patients' pain and anxiety, non-pharmacologic interventions are inconsistently utilized. Additionally, patient-specific music has not been available for use within the PACU. <h3>EBP Question/Purpose</h3> <b>PICO question. Databases utilized</b>. The purpose of this project was to evaluate the effect(s) of relaxation and music on post-operative pain, anxiety, and length of stay (LOS). The following PICO question was investigated: Do patients undergoing vaginal/abdominal hysterectomies and/or urogynecology complex procedures, who use iPads with alternative pain and anxiety management applications, have decreased pain, and/or LOS compared to a control group? Databases CINAHL, Ovid, and Pubmed were searched using the following terms: nonpharmacological interventions and surgical patients and music. Search was limited to articles available online, in English, and published between years 2020-2022. The search yielded 36 articles; 4 were selected as best-evidence to guide this project. <h3>Methods/Evidence</h3> Through grant funding, the study team procured iPads with music, game, and relaxation applications. Between March and August 2021, RNs identified appropriate patients and educated them on iPad use, pre-operatively. Patients' anxiety and pain levels were assessed prior to surgery using a verbal Likert scale. In the PACU, enrolled patients used the iPad in conjunction with current standards of care. Patients' pain and anxiety were assessed upon admission to the PACU and at discharge. LOS was also collected. <h3>Significance of Findings/Outcomes</h3> Pain and anxiety levels were collected and PACU LOS was documented on enrolled patients. Data was compared to a control group matched for surgery type. Control group included retrospective chart audit of similar surgical patients from March-August 2020. Patients enrolled in the iPad group reported lower severity of pain between PACU arrival and PACU discharge compared to the control group (iPad = 38.5% improvement v. control = 19.0 % improvement), suggesting that adjunct nonpharmacological management may impact the severity of pain experienced. No differences were noted in anxiety levels and PACU LOS between the two groups. <h3>Implications for perianesthesia nurses and future research</h3> Findings suggest that music and relaxation applications during the peri-operative period has positive effect on patients' pain. Further investigation into the effects of nonpharmacological modalities on anxiety is needed.

High-dose preoperative glucocorticoid for prevention of emergence and postoperative delirium in liver resection: A double-blinded randomized clinical trial substudy.

BackgroundEmergence delirium (ED) and postoperative delirium (POD) are associated with increased morbidity and mortality and occur in up to one‐third of patients undergoing major non‐cardiac surgery, where the underlying pathogenesis is multifactorial, including increased inflammation. We aimed to assess the effect of pre‐operative high‐ versus low‐dose glucocorticoid on the occurrence of ED and POD.MethodsThis was a substudy from a randomized, double‐blinded clinical trial. Patients ≥18 years, undergoing open liver resection were randomized 1:1 to high‐dose (HD, 10 mg/kg methylprednisolone) or low‐dose (LD, 8 mg dexamethasone) glucocorticoid and assessed for ED and POD for a maximum of 4 days during hospitalization. The 3‐min Diagnostic Interview for CAM‐defined delirium (3D‐CAM) was used for assessment, 15 and 90 min after arrival in the post‐anesthesia care unit (PACU), and subsequently once daily in the ward.ResultsFifty‐three patients were included in this secondary substudy (26 HD‐group and 27 LD‐group). ED occurred in n = 5 HD versus n = 6 LD patients 15 min after PACU arrival. At 90 min after PACU arrival, 4 patients had ED, all from LD‐group, and resulted in significantly longer PACU admission, 273 versus 178 min in ED versus Non‐ED patients. During the first 4 days in the ward, n = 5 patients had at least one occurrence of POD, all from LD‐group.ConclusionsThe primary finding of the current substudy was a lower occurrence of ED/POD in the PACU 90 min after arrival and during the first four postoperative days in patients receiving high‐dose glucocorticoid compared with patients receiving low‐dose glucocorticoid. The two study groups were not evenly balanced concerning known explanatory factors, i.e., age and size of surgery, which calls for larger studies to elucidate the matter.

ABO blood group is not a predictive factor for the amount of early opioid consumption in postanesthesia care unit: a prospective cohort study in 3,316 patients

BackgroundImmediate postoperative pain in the postanesthesia care unit (PACU) is common. Titration of opioid is the most popular strategy for controlling early postoperative pain. ABO blood group has been found to be associated with pain perception. We aimed to find the factors including ABO blood group for predicting the amount of opioid requirement in PACU.MethodsThis prospective cohort study was performed in 3316 patients who underwent various kinds of anesthetic techniques and received immediate postoperative care in PACU. Preoperative, intraoperative and PACU data were collected. A directed acyclic graph (DAG) representing the hypothesized causal pathways of preoperative, intraoperative and PACU data were compiled prior to conducting multinomial logistic regression analysis. Statistical significance in all models was defined as a P-value < 0.05.ResultsFemale sex, body mass index, preoperative use of gabapentin, preoperative anxiety score, anesthetic techniques, type of operation, amount of consumed intraoperative opioids, intraoperative use of paracetamol, parecoxib and ondansetron, duration of anesthesia and surgery, amount of blood loss, pain upon PACU arrival, use of paracetamol and parecoxib in PACU were found to be factors influencing amount of opioid consumption in PACU. ABO blood group was not associated with early postoperative opioid requirement.ConclusionsA significant number of factors are related to amount of opioid requirement in PACU. Some factors can be adjusted to provide better pain relief in early postoperative period. However, ABO blood group is not identified to be a predictive factor for early postoperative opioid consumption in PACU.

This Month in Anesthesiology

This Month in Anesthesiology

Monitoring postoperative lung recovery using electrical impedance tomography in post anesthesia care unit: an observational study

With electrical impedance tomography (EIT) recruitment and de-recruitment phenomena can be quantified and monitored at bedside. The aim was to examine the feasibility of EIT with respect to monitor atelectasis formation and resolution in the post anesthesia care unit (PACU). In this observational study, 107 postoperative patients were investigated regarding the presence and recovery of atelectasis described by the EIT-derived parameters Global Inhomogeneity Index (GI Index), tidal impedance variation (TIV), and the changes in end-expiratory lung impedance (ΔEELI). We examined whether the presence of obesity (ADP group) has an influence on pulmonary recovery compared to normal weight patients (NWP group). During the stay at PACU, measurements were taken every 15 min. GI Index, TIV, and ΔEELI were calculated for each time point. 107 patients were monitored and EIT-data of 16 patients were excluded for various reasons. EIT-data of 91 patients were analyzed off-line. Their length of stay averaged 80 min (25th and 75th quartile 52–112). The ADP group demonstrated a significantly higher GI Index at PACU arrival (p < 0.001). This finding disappeared during their stay at the PACU. Additionally, the ADP group showed a significant increase in ΔEELI between PACU arrival and discharge (p = 0.025). Furthermore, TIV showed a significantly lower value during the first 90 min of PACU stay as compared to the time period thereafter (p = 0.036). Our findings demonstrate that obesity has an influence on intraoperative atelectasis formation and de-recruitment during PACU stay. The application of EIT in spontaneously breathing PACU patients seems meaningful in monitoring pulmonary recovery.

Opioid-Free Anesthesia for Craniotomy.

Perioperative opioids are problematic following craniotomy as they can impede neurological examination because of excessive sedation and mask surgical complications. Multimodal anesthetic techniques including nerve blocks have been used successfully to deliver opioid-free anesthesia in other surgical populations; however, no clinical data evaluating opioid-free anesthesia for craniotomy exists within the current body of literature. Six prospectively identified patients underwent supratentorial craniotomy at Emory University Hospital using a multimodal opioid-free anesthetic (OFA) technique consisting of preoperative scalp block, dexmedetomidine and intravenous acetaminophen. These opioid-free patients were matched by age, sex, incision length, and incision location to 18 retrospectively identified control patients who underwent craniotomy using conventional, opioid-based anesthetic techniques. Postoperative opioid consumption and pain scores were compared and analyzed for noninferiority. Noninferiority of the OFA technique was demonstrated for opioid consumption at all measured intervals from postanesthesia care unit arrival to 24 hours postoperatively. Noninferiority was also demonstrated with respect to average postoperative pain scores from 0 to 12 hours, 0 to 24 hours, as well as length of postanesthesia care unit stay. Noninferiority was not shown for time to first rescue opioid postoperatively, pain scores for the 12 to 24 hours postoperative period, or time to emergence from anesthesia. This pilot study demonstrates the feasibility of an OFA technique for patients undergoing supratentorial craniotomy and suggests that larger prospective randomized controlled trials are indicated to examine the role of multimodal anesthetic techniques for craniotomy.

Incidence of Severe Hypothermia and Its Impact on Postoperative Surgical Complications and Time Delay to Adjunct Treatments in Breast Surgery Cancer Patients: A Case-Controlled Study.

Introduction: Unintended postoperative hypothermia frequently occurs upon arrival in the post anesthesia care unit (PACU). As part of our quality assurance program in anesthesia, we regularly monitor the incidence of this complication through our anesthesia information management system (AIMS). In this case-controlled retrospective study, our goal was to detect the incidence of unintended severe hypothermia in our breast surgery cancer patients, and subsequently to analyze the consequence of this complication in terms postoperative cutaneous infection, as well as its impact on further complementary treatment, such as radiotherapy and chemotherapy. Methods: This study was a retrospective analysis conducted through our AIMS system from 2015 through 2019, with extraction criteria based on year, type of surgery (breast), and temperature upon arrival in PACU. A tympanic temperature of less than 36 °C was considered to indicate hypothermia. Severe hypothermia was considered for patients having a temperature lower than 35.2 °C (hypothermic) (n = 80), who were paired using a propensity score analysis with a control group (normothermic) (n = 80) of other breast cancer surgery patients. Extracted data included time of surgery, sex, age, ASA status, and type and duration of the intervention. Results: The mean incidence of hypothermia was 21% from 2015 through 2019. The body mass index (BMI) was significantly lower in the hypothermia group before matching, 23.5 ± 4.1 vs. 26.4 ± 6.1 kg/m2 in normothermic patients (p < 0.05). The hypothermia group also had significantly fewer monitoring and active warming devices. No difference was noted for wound complications. Time to complementary chemotherapy and or radiotherapy did not differ between groups (52 ± 21 days in group hypothermia vs 49 ± 22 days in the control group). Conclusion: Severe intraoperative hypothermia remains an important quality assurance issue in our breast surgery cancer patients, but we could not detect any long-term effect of hypothermia.

This Month in Anesthesiology

This Month in Anesthesiology

Active versus Passive Voiding Protocols after Same-day Minimally Invasive Hysterectomy

To determine the proportion of patients discharged with a urinary catheter after a same-day benign gynecologic minimally invasive hysterectomy (MIH) according to active vs passive voiding protocols. The secondary objectives included assessing postanesthesia care unit (PACU) duration and postoperative urinary retention (POUR) rate ≤2 weeks of discharge. Retrospective, observational cohort study. Large integrated healthcare system serving approximately 40% of the Northern California population. Patients aged 18 years or older undergoing same-day MIH without urogynecology procedures from 2015 to 2018 were categorized into active or passive voiding trial groups. Active voiding trials were defined as patients arriving in the PACU with a catheter, retrograde filling of the bladder with 300 mL saline then allowing for voiding ≥50% within 30 minutes. If the patients were unable to void this volume, they were discharged with a catheter to be removed within 24 hours. A passive voiding trial involved filling or not filling the bladder before PACU arrival without a catheter, then allowing for voiding or performing a straight catheterization if the patients were unable to void. Retrospective cohort study. A total of 1644 (83.2%) patients underwent passive voiding trials, and 333 (16.8%) underwent active voiding trials. The proportion of patients discharged with a catheter was lower in the passive voiding group than in the active voiding group (5.4% vs 10.5%; p=.001). The passive group had a shorter mean PACU time than the active group (218 ± 86 vs 240 ± 93 minutes; p <.001). The crude POUR rates for the passive and active voiding groups were 1.8% and 3.0%, respectively (p=.16). Within an integrated healthcare system, patients who underwent passive voiding trials compared with those who underwent active voiding trials were discharged home from the PACU after a shorter duration. In addition, a larger proportion of the patients who underwent passive voiding trials were discharged home without a urinary catheter. There were no differences in the POUR rates. Our findings suggest that passive voiding trials can be safely used after a benign MIH to reduce hospital duration, optimize healthcare resources, and improve patient experience.