Pain Levels Experienced With Activities After Cardiac Surgery

Pain Intensity After Cardiac Surgery and its Association With Kinesiophobia: A Descriptive Study

PURPOSE

Severe pain and fear of pain may decrease physical activity and restrict movements after cardiac surgery. This study aimed to determine pain intensity after cardiac surgery and its association with kinesiophobia.

DESIGN

This was a descriptive and correlational study.

METHODS

The study was conducted with cardiac surgery patients (n = 170). The sample size was calculated by using the G*POWER 3.1 program. According to the power analysis, the sample size was calculated as 170, taking into account the dependent variable with the largest sample size (kinesiophobia) and 20% loss. The outcome measures were pain and kinesiophobia collected using the Visual Analog Scale and Tampa Kinesiophobia Scale.

FINDINGS

Married patients were at the greatest risk for kinesiophobia, higher than that for single patients (β = -3.765, β = -3.609; P < .05). Obese patients were at the greatest risk for kinesiophobia higher when compared to patients of normal weight (β = -2.907, P < .05). No statistically significant correlation was found between the pain intensity and kinesiophobia scores (P > 0.05).

CONCLUSIONS

Kinesiophobia was higher in patients after cardiac surgery. Married and obese patients were predictors of kinesiophobia; however, pain was not associated with kinesiophobia.

To Study the Efficacy of Ultrasound Guided Pecto-Intercostal Fascial Plane Block in Patients Undergoing Midline Sternotomy in Open Cardiac Surgery: A Randomized Prospective Comparative Study

BACKGROUND

The incidence of acute poststernotomy pain after cardiac surgery is 80%1. Pecto-intercostal fascial plane block (PIFB) adjacent to the sternum anesthetizes the anterior cutaneous branches of the intercostal nerves and may provide effective analgesia after sternotomy.

METHODOLOGY

A randomized controlled, double-blinded, prospective comparative trial was conducted at a tertiary care center on patients of midline sternotomy between 18 and 65 years and NYHA Class 2 and 3 for open cardiac surgery with the primary aim to evaluate analgesia on deep breathing after 3 hours of PIFB block bilaterally. A total of 60 patients were enrolled and randomly divided into three groups. PIFB was administered bilaterally before extubation, with 15 ml 0.125% bupivacaine plain (Group B), and bupivacaine+ clonidine 0.25 mcg/kg (Group B+C). Group C did not receive any intervention. All patients received acetaminophen 1 gram three times a day and injectable tramadol 1 mg/kg as a rescue analgesic.

RESULTS

Baseline characteristics were similar among all the groups. The Numeric Rating Scale (NRS) for pain was statistically lower (P < 0.05) in Groups B and B+C compared to Group C at rest, deep breathing, and coughing at 3, 6, and 12 hours after extubation. NRS on deep breathing in Groups B, B+C, and C was {(2.3, 1.5, 4.4) at 3 hours, (2.3, 1.6, 4.3) at 6 hours, (2.8, 2.1, 3.9) at 12 hrs, and {(4.3, 3.5, 3.6)} at 24 hours after extubation. The peak expiratory flow rate was the highest in Group B. Rescue analgesia was not required in Group B.

CONCLUSION

PIFB reduces sternotomy pain compared to the control group on deep breathing at 3 hours after block, with delayed requirement of rescue analgesia and improved respiratory mechanics in terms of peak expiratory flow rate at all time points. There is no benefit from adding clonidine.

Efficacy of parasternal peripheral nerve catheters versus no block for median sternotomy: a single-centre retrospective study

Background

Sternal pain after cardiac surgery results in considerable discomfort. Single-injection parasternal fascial plane blocks have been shown to reduce pain scores and opioid consumption during the first 24 h after surgery, but the efficacy of continuous infusion has not been evaluated. This retrospective cohort study examined the effect of a continuous infusion of local anaesthetic through parasternal catheters on the integrated Pain Intensity and Opioid Consumption (PIOC) score up to 72 h.

Methods

We performed a retrospective analysis of patients undergoing cardiac surgery with median sternotomy at a single academic centre before and after the addition of parasternal nerve catheters to a standard multimodal analgesic protocol. Outcomes included PIOC score, total opioid consumption in oral morphine equivalents, and time-weighted area under the curve pain scores up to 72 h after surgery.

Results

Continuous infusion of ropivacaine 0.1% through parasternal catheters resulted in a significant reduction in PIOC scores at 24 h (-62, 95% confidence interval -108 to -16; P<0.01) and 48 h (-50, 95% CI -97 to -2.2; P=0.04) compared with no block. A significant reduction in opioid consumption up to 72 h was the primary factor in reduction of PIOC.

Conclusions

This study suggests that continuous infusion of local anaesthetic through parasternal catheters may be a useful addition to a multimodal analgesic protocol in patients undergoing cardiac surgery with sternotomy. Further prospective study is warranted to determine the full benefits of continuous infusion compared with single injection or no block.

Immediate effects of upper limb exercises with and without deep breathing on lung function after cardiac surgery - a randomized crossover trial

BACKGROUND

Open heart surgery, involving median sternotomy, may cause diminished chest wall motion and restrictive pulmonary function in the early postoperative period. Thoracic and upper extremity range of motion (ROM) exercises are often recommended after surgery but have not been evaluated regarding effect on lung volumes and oxygenation. The objective of this study was to evaluate the immediate effect of upper limb elevations, with or without simultaneous deep breathing, on lung function after cardiac surgery.

METHODS

In a randomized 2 × 2 crossover trial, 22 adult patients (> 18 years old) were assessed during one of the first days after surgery in the spring of 2022 at Örebro University Hospital, Sweden. Exercises involving five bilateral upper limb elevations, performed either with simultaneous deep breathing (ROM-DB) or without (ROM), while sitting in an upright position at the edge of the bed, were evaluated. Peripheral oxygen saturation (Rad-5v; Masimo, Irvine, USA) was the primary outcome. Tidal volume and respiratory rate were recorded continuously during the exercises (Spiropalm; Cosmed, Rome, Italy). Heart rate, pain, exertion and dyspnoea were evaluated before and after the exercises.

RESULTS

Both ROM-DB and ROM momentarily increased peripheral oxygen saturation (+ 1% ± 1, p = 0.004 and + 1% ± 1, p < 0.001, respectively), with no significant differences between these exercises (p = 0.525). ROM-DB significantly increased the VT compared with ROM (798 ± 316 vs. 602 mL ± 176, p = 0.004). However, ROM-DB induced more pronounced pain (p = 0.012), exertion (p = 0.035) and dyspnoea (p = 0.013) than ROM.

CONCLUSIONS

Upper limb elevations improved oxygenation momentarily, both performed with and without simultaneous deep breathing, with no significant differences between these exercises. The additive deep breathing improved tidal volume compared with upper limb elevations alone, but induced more pain, exertion and dyspnoea during the performance of exercise.

TRIAL REGISTRATION

ClinicalTrials.gov (NCT05278819).

Transversus Thoracic Muscle Plane Block For Postoperative Pain in Pediatric Cardiac Surgery: A Systematic Review And Meta-Analysis of Randomized And Observational Studies

OBJECTIVES

Pediatric patients undergoing cardiac surgery usually experience significant surgical pain. Additionally, the effect of poor surgical analgesia creates a pain continuum that extends to the postoperative period. Transversus thoracic muscle plane block (TTMPB) is a novel plane block technique that can provide analgesia to the anterior chest wall. The analgesic role of TTMPB in pediatric cardiac surgery is still uncertain. A meta-analysis was conducted to determine the analgesic efficacy of this procedure.

DESIGN AND SETTING

Systematic review and meta-analysis. PubMed, Embase, Web of Science, CENTRAL, WanFang Data, and the China National Knowledge Infrastructure were searched to November 2023, and the Grading of Recommendations Assessment, Development, and Evaluation approach was followed to evaluate the certainty of evidence.

PARTICIPANTS

Eligible studies enrolled pediatric patients from 2 months to 12 years old scheduled to undergo cardiac surgery, and randomized them to receive a TTMPB or no block/sham block.

MEASUREMENTS AND MAIN RESULTS

Six studies that enrolled 601 pediatric patients were included. Low-certainty evidence from randomized trials showed that, compared with no block or sham block, TTMPB in pediatric patients undergoing cardiac surgery may reduce postoperative modified objective pain score at 12 hours (weighted mean difference [WMD] -2.20, 95% CI -2.73 to -1.68) and 24 hours (WMD -1.76, 95% CI -2.09 to -1.42), intraoperative opioid consumption (WMD -3.83, 95% CI -5.90 to -1.76 μg/kg), postoperative opioid consumption (WMD -2.51, 95% CI -2.84 to -2.18 μg/kg), length of intensive care unit (ICU) stay (WMD -5.56, 95% CI -8.30 to -2.83 hours), and extubation time (WMD -2.13, 95% CI -4.21 to -0.05 hours). Retrospective studies provided very low certainty that the results were consistent with the randomized trials.

CONCLUSION

Very low- to low-certainty evidence showed that TTMPB in pediatric patients undergoing cardiac surgery may reduce postoperative pain, opioid consumption, ICU length of stay, and extubation time.

Randomized clinical trial of continuous transversus thoracis muscle plane block for patients undergoing open heart valve replacement surgery

The optimal analgesia regimen after open cardiac surgery is unclear. The aim of this study was to investigate the beneficial effects of continuous transversus thoracis muscle plane (TTMP) blocks initiated before surgery on open cardiac surgery outcomes. A group of 110 patients were randomly allocated to either receive bilateral continuous TTMP blocks (TTP group) or no nerve block (SAL group). The primary endpoint was post-operative pain at 4, 8, 16, 24, 48 and 72 h after extubation at rest and exercise. The secondary outcome measures included analgesia requirements (sufentanil and flurbiprofen axetil administration), time to extubation, incidence of reintubation, length of stay in the ICU, incidence of post-operative nausea and vomiting (PONV), time until return of bowel function, time to mobilization, urinary catheter removal and length of hospital stay. The length of stay in the ICU and length of hospital stay were significantly longer in the SAL group than in the TTP group. NRS scores at rest and exercise were significantly lower in the TTP group than in the SAL group at all time points. The TTP group required significantly less intraoperative and post-operative sufentanil and post-operative dynastat consumption than the SAL group. Time to extubation, time to first flatus, time until mobilization and time until urinary catheter removal were significantly earlier in the TTP group than in the SAL group. The incidence of PONV was significantly lower in the TTP group. Bilateral continuous TTMP blocks provide effective analgesia and accelerate recovery in patients undergoing open heart valve replacement surgery.

Deep Parasternal Intercostal Plane Block for Intraoperative Pain Control in Cardiac Surgical Patients for Sternotomy: A Prospective Randomized Controlled Trial

OBJECTIVES

Sternotomy pain is common after cardiac surgery. The deep parasternal intercostal plane (DPIP) block is a novel technique that provides analgesia to the anterior chest wall. The aim of this study was to investigate the analgesic effect of bilateral DPIP blocks on intraoperative pain control in cardiac surgery.

DESIGN

This is a double-blinded, prospective randomized controlled trial (Oct 2020-Dec 2022).

SETTINGS

This study was conducted in a single institution, which is an academic university hospital.

PARTICIPANTS

Eighty-six elective cardiac surgical patients with median sternotomy were recruited.

INTERVENTIONS

Patients were randomly divided into DPIP or control group. Either 20ml 0.25% levobupivacaine or 0.9% normal saline was injected for the DPIP under ultrasound guidance after induction of general anaesthesia.

MEASUREMENTS AND MAIN RESULTS

The primary outcome was intraoperative opioids consumption and hemodynamic changes at sternotomy. Secondary outcomes included postoperative morphine consumption, postoperative pain and time to tracheal extubation. Intraoperative opioids requirement was reduced from a median (IQR) intravenous morphine equivalence of 21.4mg (13.8-24.3mg) in control group to 9.5mg (7.3-11.2mg) in the DPIP group (P<0.001). Hemodynamic parameters were more stable in DPIP group at sternotomy, as evidenced by lower percentage increase in systolic, diastolic and mean arterial blood pressure from baseline. No difference was observed in time to tracheal extubation, postoperative morphine consumption, postoperative pain score and spirometry.

CONCLUSIONS

Bilateral DPIP block provides effective intraoperative analgesia and opioid-sparing. It may be included as part of the multimodal analgesia for enhanced recovery in cardiac surgery.

Effects of parasternal intercostal block on surgical site wound infection and pain in patients undergoing cardiac surgery: A meta-analysis

This study aimed to assess the effect of parasternal intercostal block on postoperative wound infection, pain, and length of hospital stay in patients undergoing cardiac surgery. PubMed, Embase, Cochrane Library, China National Knowledge Infrastructure, VIP, and Wanfang databases were extensively queried using a computer, and randomised controlled studies (RCTs) from the inception of each database to July 2023 were sought using keywords in English and Chinese language. Literature quality was assessed using Cochrane-recommended tools, and the included data were collated and analysed using Stata 17.0 software for meta-analysis. Ultimately, eight RCTs were included. Meta-analysis revealed that utilising parasternal intercostal block during cardiac surgery significantly reduced postoperative wound pain (standardised mean difference [SMD] = -1.01, 95% confidence intervals [CI]: -1.70 to -0.31, p = 0.005) and significantly shortened hospital stay (SMD = -0.40, 95% CI: -0.77 to -0.04, p = 0.029), though it may increase the risk of wound infection (OR = 5.03, 95% CI:0.58-44.02, p = 0.144); however, the difference was not statistically significant. The application of parasternal intercostal block during cardiac surgery can significantly reduce postoperative pain and shorten hospital stay. This approach is worth considering for clinical implementation. Decisions regarding its adoption should be made in conjunction with the relevant clinical indices and surgeon's experience.

Transversus thoracic muscle plane block for pain during cardiac surgery: a systematic review and meta-analysis

STUDY OBJECTIVE

The role of transversus thoracic muscle plane blocks (TTMPBs) during cardiac surgery is controversial. We conducted a systematic review to establish the effectiveness of this procedure.

DESIGN

Systematic review. We searched PubMed, Embase, Web of Science, CENTRAL, WanFang Data, and the China National Knowledge Infrastructure to June 2022, and followed the GRADE approach to evaluate the certainty of evidence.

STUDY ELIGIBILITY CRITERIA

Eligible studies enrolled adult patients scheduled to undergo cardiac surgery and randomized them to receive a TTMPB or no block/sham block.

MAIN RESULTS

Nine trials that enrolled 454 participants were included. Compared to no block/sham block, moderate certainty evidence found that TTMPB probably reduces postoperative pain at rest at 12 h [weighted mean difference (WMD) -1.51 cm on a 10 cm visual analogue scale for pain, 95% CI -2.02 to -1.00; risk difference (RD) for achieving mild pain or less (≤3 cm), 41%, 95% CI 17-65) and 24 h (WMD -1.07 cm, 95% CI -1.83 to -0.32; RD 26%, 95% CI 9-37). Moderate certainty evidence also supported that TTMPB probably reduces pain during movement at 12 h (WMD -3.42 cm, 95% CI -4.47 to -2.37; RD 46%, 95% CI 12-80) and at 24 h (WMD -1.73 cm, 95% CI -3.24 to -0.21; RD 32%, 95% CI 5-59), intraoperative opioid use [WMD -28 milligram morphine equivalent (MME), 95% CI -42 to -15], postoperative opioid consumption (WMD -17 MME, 95% CI -29 to -5), postoperative nausea and vomiting (absolute risk difference 255 less per 1000 persons, 95% CI 140-314), and intensive care unit (ICU) length of stay (WMD -13 h, 95% CI -21 to -6).

CONCLUSION

Moderate certainty evidence showed TTMPB during cardiac surgery probably reduces postoperative pain at rest and with movement, opioid consumption, ICU length of stay, and the incidence of nausea and vomiting.

Evaluation of the Effect of New Multimodal Analgesia Regimen for Cardiac Surgery: A Prospective, Randomized Controlled, Single-Center Clinical Study

Objective

To investigate the feasibility of multimodal regimen by paracetamol, gabapentin, ketamine, lidocaine, dexmedetomidine and sufentanil among cardiac surgery patients, and compare the analgesia efficacy with conventional sufentanil-based regimen.

Design

A single-center, prospective, randomized, controlled clinical trial.

Setting

One participating center, the cardiovascular center of the major integrated teaching hospital.

Participants

A total of 115 patients were assessed for eligibility: 108 patients were randomized, 7 cases were excluded.

Interventions

The control group (group T) received conventional anesthesia management. Interventions in the multimodal group (group M) were as follows in addition to the standard of care: gabapentin and acetaminophen 1 hour before surgery; ketamine for induction and to maintain anesthesia with lidocaine and dexmedetomide. Ketamine, lidocaine, and dexmedetomidine were added to routine sedatives postoperatively in group M.

Measurements and Main Results

The incidence of moderate-to-severe pain on coughing made no significant difference (68.5% vs 64.8%, P=0.683). Group M had significantly less sufentanil use (135.72µg vs 94.85µg, P=0.000) and lower rescue analgesia rate (31.5% vs 57.4%, P=0.007). There was no significant difference in the incidence of chronic pain, PONV, dizziness, inflammation index, mechanical ventilation time, length of stay, and complications between the two groups.

Conclusion

Our multimodal regimen in cardiac surgery is feasible, but was not superior to traditional sufentanil-based regimen in the aspects of analgesia effects; however, it did reduce perioperative opioid consumption along with rescue analgesia rate. Moreover, it showed the same length of stay and the incidences of postoperative complications.

Implementation of Bilateral Rectus Sheath Blocks in Conjunction With Transversus Thoracis Plane and Pectointercostal Fascial Blocks for Immediate Postoperative Analgesia After Cardiac Surgery

Pain continues to be a well-known complication of cardiac surgery in the postoperative period and intravenous opioid analgesia has traditionally been employed to manage cardiac surgical pain. However, both components have contributed to a multitude of undesirable adverse effects which can further exacerbate delays in recovery. Often overlooked in the analgesic plan, chest tube pain contributes significantly to the overall postoperative pain from cardiac surgery. Novel regional anesthetic blocks have shown great promise as analgesic adjuncts for cardiothoracic anesthesia but preliminary investigations focus primarily on management of sternotomy pain. Reduction of chest tube pain should be considered while implementing regional blocks to control surgical pain. This study presents a case where the rectus sheath block minimized chest tube pain after aortic valve replacement in conjunction with intercostal nerve blocks and a multimodal analgesic plan.

Effect of listening to music on anxiety, pain, and cardiorespiratory parameters in cardiac surgery: study protocol for a randomized clinical trial

BACKGROUND

Preoperative anxiety and postoperative pain are frequent in cardiac surgeries and constitute important stressors for patients, which can cause several complications. One strategy that aims to alleviate these phenomena is listening to music as a non-pharmacological intervention. The aim of this study is to evaluate the effect of listening to music on preoperative state-anxiety, postoperative pain, at rest and when instructed to cough, and cardiorespiratory parameters in patients undergoing cardiac surgery.

METHODS

A randomized, parallel, simple masking clinical trial will be conducted with patients 18 years of age or older who have undergone elective cardiac surgery by sternotomy, who agree to participate in the research and sign a free and informed consent form. Study participants will be randomly divided, in a 1:1 ratio, to one of the two groups: experimental (subjected to listening to music for 20 min in the pre- and postoperative period) or control (standard care in the pre- and postoperative period), using a randomization scheme generated by the Randomization.com website. The sample size calculation was obtained after conducting a pilot study.

DISCUSSION

The results of the study may contribute to the implementation of non-pharmacological interventions in health services, highlighting the protocols for listening to music, to minimize anxiety and pain in cardiac surgery.

TRIAL REGISTRATION

ReBEC RBR-8mdyhd . Posted on December 10, 2019.

Continuous Pecto-Intercostal Fascial Block Provides Effective Analgesia in Patients Undergoing Open Cardiac Surgery: A Randomized Controlled Trial

BACKGROUND

The optimal analgesia regimen after open cardiac surgery was unclear. The aim of this study was to investigate the beneficial effects of continuous Pecto-Intercostal Fascial Block (PIFB) blocks initiated before surgery on outcomes following open cardiac surgery.

METHODS

A group of 116 patients were randomly allocated to either receive bilateral continuous PIFB (PIF group) or the same block with saline (SAL group). The primary endpoint was postoperative pain at 4, 8, 16, 24, 48, and 72 h after extubation at rest and exercise. The secondary outcome measures included analgesia requirements (sufentanil and flurbiprofen consumption), time to extubation, length of stay in the ICU, incidence of postoperative nausea and vomiting (PONV), time until return of bowel function, time to mobilization, urinary catheter removal and the length of hospital stay.

RESULTS

The length of stay in the ICU (29 ± 7 h vs 13 ± 4 h, p < 0.01) and length of hospital stay (8.9 ± 0.9 d vs 6.5 ± 1.1 d, p < 0.01) was significantly longer in the SAL group than in the PIF group. Resting pain scores (2 h after extubation : 1.1 vs 3.3, p < 0.01; 4 h after extubation : 1.0 vs 3.5, p < 0.01; 8 h after extubation : 1.2 vs 3.7, p < 0.01; 16 h after extubation : 1.3 vs 3.7, p < 0.01; 24 h after extubation : 1.4 vs 2.8, p < 0.01; 48 h after extubation : 0.9 vs 2.2, p < 0.01; 72 h after extubation : 0.8 vs 2.1, p < 0.01) and dynamic pain scores (2 h after extubation : 1.4 vs 3.7, p < 0.01; 4 h after extubation : 1.3 vs 3.8, p < 0.01; 8 h after extubation : 1.4 vs 3.5, p < 0.01; 16 h after extubation : 1.2 vs 3.4, p < 0.01; 24 h after extubation : 1.1 vs 3.1, p < 0.01; 48 h after extubation : 1.0 vs 2.9, p < 0.01; 72 h after extubation: 0.9 vs 2.8, p < 0.01) were significantly lower in PIF group compared with SAL group at all time points. The PIF group required significantly less intraoperative (123 ± 32 μg vs 63 ± 16 μg, p < 0.01) and postoperative sufentanil (102 ± 22 μg vs 52 ± 17 μg, p < 0.01) consumption, postoperative flurbiprofen consumption (350 ± 100 mg vs 100 ± 100 mg, p < 0.01) than the SAL groups. Time to extubation (8.9 ± 2.4 h vs 3.2 ± 1.3 h, p < 0.01), time to first flatus (43 ± 6 h vs 30 ± 7 h, p < 0.01), time until mobilization (35 ± 5 h vs 24 ± 7 h, p < 0.01), time until urinary catheter removal (47 ± 9 h vs 31 ± 4 h, p < 0.01) was significantly earlier in the PIF group than in the SAL group. The incidence of PONV was significantly lower in the PIF group (9.1% vs 27.3%, p < 0.01).

CONCLUSION

Bilateral continuous PIFB reduced the length of hospital stay and provided effective postoperative pain for three days.

Delirium Prevention in Postcardiac Surgical Critical Care

This review provides an overview for health care teams involved in the perioperative care of cardiac surgery patients. The intention is to summarize key determinants of delirium, its impact on short- and long-term outcomes as well as to discuss effective management strategies. The first component of this review examines the prevalence and the factors associated with an increased risk of postoperative delirium. A multitude of predisposing (eg, baseline vulnerability and comorbidities) and precipitating (eg, type of cardiac surgery and postoperative care) factors that contribute to the occurrence of delirium are discussed.

Cardiac Enhanced Recovery After Surgery: Early Outcomes in a Community Setting

BACKGROUND

Enhanced Recovery After Surgery (ERAS) programs have demonstrated improved outcomes in non-cardiac surgery. More recently, ERAS has been applied to cardiac surgery with promising results. We have implemented cardiac ERAS at our community-based program, aiming to improve all phases of care, and now report our early results.

METHODS

We retrospectively analyzed 73 consecutive patients treated with ERAS care compared to 74 patients treated prior to implementing ERAS. Our ERAS program consisted of 6 perioperative care bundles including enhanced patient education, shortened preoperative fasting period and oral carbohydrate load, postoperative nausea prophylaxis, multimodal opioid-sparing analgesia, early extubation, and early mobilization.

RESULTS

ERAS patients required significantly less opioids captured as total milligram morphine equivalents (MME; median: 35.0 versus 75.3, P < .001), less nausea as determined by fewer total ondansetron rescue doses (median 0 versus 0.5, P = .011), and less lightheadedness (P = .028) compared with pre-ERAS patients. Postoperative mobility was significantly better (POD 4: 95% vs 81%, P = .013) and postoperative length of stay was lower for ERAS care, but did not reach statistical significance (median 4 vs 5 days, P = .06). There was no difference in pain or glucose control or in early extubation.

CONCLUSIONS

Cardiac ERAS significantly decreased opioid use, nausea, lightheadedness and improved functional outcome for cardiac surgical patients in a community hospital.

Trajectories of Pain After Cardiac Surgery: Implications for Measurement, Reporting, and Individualized Treatment

BACKGROUND

Postoperative pain after cardiac surgery is a significant problem, but studies often report pain value as an average of the study cohort, obscuring clinically meaningful differences in pain trajectories. We sought to characterize heterogeneity in postoperative pain experiences.

METHODS

We enrolled patients undergoing a cardiac surgery at a tertiary care center between January 2019 and February 2020. Participants received an electronically-delivered questionnaire every 3 days for 30 days to assess incision site pain level. We evaluated the variability in pain trajectories over 30 days by the cohort-level mean with confidence band and latent classes identified by group-based trajectory model. Group-based trajectory model estimated the probability of belonging to a specific trajectory of pain.

RESULTS

Of 92 patients enrolled, 75 provided ≥3 questionnaire responses. The cohort-level mean showed a gradual and consistent decline in the mean pain level, but the confidence bands covered most of the pain score range. The individual-level trajectories varied substantially across patients. Group-based trajectory model identified 4 pain trajectories: persistently low (n=9, 12%), moderate declining (initially mid-level, followed by decline; n=26, 35%), high declining (initially high-level, followed by decline; n=33, 44%), and persistently high pain (n=7, 9%). Persistently high pain and high declining groups did not seem to be clearly distinguishable until approximately postoperative day 10. Patients in persistently low pain trajectory class had a numerically lower median age than the other 3 classes and were below the lower confidence band of the cohort-level approach. Patients in the persistently high pain trajectory class had a longer median length of hospital stay than the other 3 classes and were often higher than the upper confidence band of the cohort-level approach.

CONCLUSIONS

We identified 4 trajectories of postoperative pain that were not evident from a cohort-level mean, which has been a common way of reporting pain level. This study provides key information about the patient experience and indicates the need to understand variation among sites and surgeons and to investigate determinants of different experience and interventions to mitigate persistently high pain.

Seven-year follow-up of persistent postsurgical pain in cardiac surgery patients: A prospective observational study of prevalence and risk factors

BACKGROUND

Our aim was to describe the long-term prevalence, risk factors and impact on quality of life of persistent postsurgical pain (PPP) following cardiac surgery.

METHODS

All patients undergoing sternotomy in a single centre over 6 months were prospectively interviewed by telephone at six months and seven years following surgery.

RESULTS

We analysed data from 174 patients at six months and 146 patients at seven years following surgery, revealing a PPP prevalence of 39.7% (n = 69) and 9.6% (n = 14) respectively. At six post-operative months, younger age, higher acute pain score, intraoperative remifentanil infusion and more prolonged surgery were associated with sternotomy-site PPP. These variables, in combination, predict PPP in this study group with area under the receiver operating curve of 0.91 (95% CI 0.86-0.94) at 6 months and 0.74 (95% CI 0.57-0.86) at 7 years. Quality of life scores were significantly lower with PPP (median change in EQ-5D score = -0.23 [-0.57, -0.09] compared to 0.00 [0-0.24] without PPP at 7 years, p < 0.001). At7 years, younger age, prolonged surgery and intraoperative remifentanil infusion were associated with sternotomy-site PPP.

CONCLUSIONS

To the best of our knowledge, this is the longest follow-up of PPP across all surgical specialities and certainly within cardiac surgery. Prevalence of PPP and impact on QOL after cardiac surgery are high and associated with young age, high acute pain score, use of remifentanil and long operative time. We present a predictive score to highlight patients at risk of developing PPP.

SIGNIFICANCE

Seven years after cardiac surgery, almost 10% of patients in this cohort described persistent pain in and around the incision. While higher than previous reports in the literature (limited to up to five post-operative years), this assessment was made following three maximal coughs and therefore is movement or function evoked. High incident of persistent postsurgical pain may adversely affect long-term quality of life which is measured using a validated tool.

Lidocaine for postoperative pain after cardiac surgery: a systematic review

OBJECTIVE

Lidocaine is one of the most widely used local anesthetics with well-known pharmacological properties. The purpose of this systematic review is to investigate the effects of lidocaine on postoperative pain scores and recovery after cardiac surgery.

METHODS

A comprehensive database search was conducted by a reference librarian for randomized clinical trials (RCT) from January 1, 1980 to September 1, 2019. Eligible study designs included randomized controlled trials of lidocaine for postoperative pain management in adults undergoing cardiac surgery. After removal of duplicates, 947 records were screened for eligibility and 3 RCTs met inclusion criteria.

RESULTS

Sources of bias were identified in 2 of 3 RCTs. Lidocaine was administered intravenously, topically, and intrapleurally. Key findings included [1] 2% lidocaine placed topically on chest tube prior to intraoperative insertion was associated with significantly lower pain scores and lower cumulative doses of fentanyl; and [2] 2% lidocaine administered intrapleurally was associated with significantly lower pain scores and significant improvements in pulmonary mechanics. Lidocaine infusions were not associated with significant changes in pain scores or measures of recovery. No significant associations were observed between lidocaine and overall mortality, hospital length of stay or ICU length of stay. No data were reported for postoperative nausea and vomiting or arrhythmias.

CONCLUSIONS

Due to the favorable risk profile of topical lidocaine and the need for further advancements in the postoperative care of adults after cardiac surgery, topically administered lidocaine could be considered for incorporation into established postoperative recovery protocols.

Bilateral transversus thoracis muscle plane block provides effective analgesia and enhances recovery after open cardiac surgery

BACKGROUND

The mid-sternum is the main source of pain after open cardiac surgery. The aim of this study was to investigate the effect of bilateral transversus thoracis muscle plane (TTMP) blocks on open cardiac surgery.

METHODS

Sixty patients were randomly divided into two groups: bilateral TTMP blocks (TP group) or no nerve block (CO group). The primary endpoint was perioperative sufentanil consumption. The secondary outcome measures included postoperative pain, flurbiprofen axetil administration, quality of sleep after extubation, time to extubation, time to the return of gastrointestinal function, time to drain removal, the Intensive Care Unit (ICU) stay time, and hospital stay.

RESULTS

The TP group reported significantly less sufentanil and flurbiprofen axetil consumption than the CO group. The CO group had higher Numerical Rating Scale (NRS) pain scores at 1, 2, 6, 12, and 24 h after extubation both at rest and during movement than the TP groups. Compared with the CO group，time to extubation, time to the first bowel movement, ICU stay time, and hospital stay were significantly decreased in the TP group. The TP group was rated as better in the quality of the two nights of sleep after extubation.

CONCLUSION

Bilateral TTMP blocks can provide good perioperative analgesia for patients undergoing open cardiac surgery and promote postoperative recovery.

[Unresolved issues in the prevention of bronchopulmonary complications in a cardiac surgery patient from the standpoint of a rehabilitation therapist]

Bronchopulmonary complications are one of the leading causes of morbidity after cardiac surgery; they lengthen a patient's hospital stay and increase the cost of treatment. The most common postoperative bronchopulmonary complications include pneumonia, atelectasis, respiratory failure, pneumothorax, and bronchospasm. These complications are the consequences of anesthesia and surgical trauma aggravated by the presence of risk factors in the patient in the preoperative period such as any chronic disease involving the lungs, smoking history, persistent cough and / or wheezing, chest and spinal deformities, obesity, senior age. In addition, the presence of chronic heart failure, diabetes mellitus, and chronic kidney disease also increase the risk of developing bronchopulmonary complications. In the prevention and treatment of bronchopulmonary complications the clinical effectiveness of rehabilitation programs after coronary artery bypass grafting is undeniable. The effectiveness of the programs has been proven on the basis of both domestic and foreign long-term in-practice and scientific research. However, despite the significant advances in cardiac rehabilitation there are a number of unresolved issues. Is it possible in a short period of time of the first stationary rehabilitation stage to form the patient's skill to perform breathing exercises and, accordingly, to obtain the maximum effect in the prevention of bronchopulmonary complications? What factors can affect the speed of motor skill formation in the patient's mastering of breathing exercises? What should be the frequency of procedures per day and the number of exercises when a physical therapy instructor works with a patient to increase the effectiveness of the prevention of bronchopulmonary complications in the postoperative period? What category of patients is strictly required for the pre-rehabilitation stage? How should the pre-rehabilitation stage be organized and how long should it take? All these questions require the work-out and implementation of scientifically grounded individual rehabilitation programs with a step-by-step algorithm for managing the patient by a rehabilitation multi-team from the first hours after surgery with the mandatory inclusion of pre-rehabilitation and taking into account the social, anamnestic, clinical and psychological characteristics of the patient.

Nonopioid Analgesics in Postoperative Pain Management After Cardiac Surgery

Opioid analgesia is still considered the standard of practice for cardiac surgery. In recent years, combinations of several nonnarcotic analgesics and regional analgesia have shown promise in restricting opioid use during and after cardiac surgery. Ketamine infusion, dexmedetomidine infusion, acetaminophen, ketorolac, and gabapentin are useful adjuvants in cardiac anesthesia practice and have opioid-sparing properties. The beneficial effects of nonnarcotic multimodal analgesia on intraoperative stress response, recovery profile, postoperative pain, and persistent opioid use after cardiac surgery are yet to be established, and further randomized clinical trials are required.

Enhanced recovery and early extubation after pediatric cardiac surgery using single-dose intravenous methadone

Background/Aims:

Methadone may offer advantages in facilitating early extubation after cardiac surgery, but very few data are available in the pediatric population.

Setting/Design:

Community tertiary children's hospital, retrospective case series.

Materials and Methods:

We performed a retrospective analysis of all pediatric cardiac surgical patients for whom early extubation was intended. A multimodal analgesic regimen was used for all patients, consisting of methadone (0.2–0.3 mg/kg), ketamine (0.5 mg/kg plus 0.25 mg/kg/h), lidocaine (1 mg/kg plus 1.5 mg/kg/h), acetaminophen (15 mg/kg), and parasternal ropivacaine (0.5 mL/kg of 0.2%). Outcome variables were collected with descriptive statistics.

Results:

A total of 24 children [median = 7 (interquartile range = 3.75–13.75) years old, 23.7 (14.8–53.4) kg] were included in the study; 22 (92%) had procedures performed on bypass and 11 (46%) involved a reentry sternotomy. Methadone dosing was 0.26 (0.23–0.29) mg/kg. None of the children required intraoperative supplemental opioids; 23 (96%) were extubated in the operating room. The first p_aCO₂ on pediatric intensive care unit admission was 51 (45–58) mmHg. Time to first supplemental opioid administration was 5.1 (3.5–9.5) h. Cumulative total supplemental opioids (in intravenous morphine equivalents) at 24 and 72 h were 0.2 (0.09–0.32) and 0.42 (0.27–0.68) mg/kg. One child required postoperative bilevel positive airway pressure support, but none required reintubation. None had pruritus; three (13%) experienced nausea.

Conclusion:

A methadone-based multimodal regimen facilitated early extubation without appreciable adverse events. Further investigations are needed to confirm efficacy of this regimen and to assess whether the excellent safety profile seen here holds in the hands of multiple providers caring for a larger, more heterogeneous population.

Intranasal Fentanyl for Intervention-Associated Breakthrough Pain After Cardiac Surgery

Background

Cardiac bypass surgery patients have early postoperative interventions that elicit breakthrough pain. We evaluated the use of intranasal fentanyl for breakthrough pain management in these patients.

Methods

Multimodal analgesia (paracetamol 1 g three times a day, oxycodone 2–3 mg boluses with a patient-controlled intravenous pump) was used in 16 patients (age 49–70 years, weight 59–129 kg) after cardiac bypass surgery. Intranasal fentanyl 100 µg or 200 µg was used to manage breakthrough pain on the first and third postoperative mornings in a randomised order. Blood samples were collected for up to 3 h after fentanyl administration, pain was assessed with a numeric rating scale of 0–10. Plasma fentanyl concentration was assayed using liquid chromatography-mass spectrometry. Body composition was measured with a bioelectrical impedance device.

Results

Bioavailability of intranasal fentanyl was high (77%), absorption half-time short (< 2 min) and an analgesic plasma concentration ≥ 0.5 ng/mL was achieved in 31 of 32 administrations. Fentanyl exposure correlated inversely with skeletal muscle mass and total body water. Fentanyl analgesia was effective both on the first postoperative morning with chest pleural tube removal and during physiotherapy on the third postoperative morning. The median time of subsequent oxycodone administration was 1.1 h after intranasal fentanyl 100 µg and 2.1 h after intranasal fentanyl 200 µg, despite similar oxycodone concentrations (median 13.8, range 5.2–35 ng/mL) in both fentanyl dose groups.

Conclusions

Intranasal fentanyl 100 µg provided rapid-onset analgesia within 10 min and is an appropriate starting dose for incidental breakthrough pain in the first 3 postoperative days after cardiac bypass surgery.

Clinical Trial Registration

EudraCT Number: 2018-001280-22.

Supplementary Information

The online version contains supplementary material available at 10.1007/s40262-021-01002-4.

Location and Patterns of Persistent Pain Following Cardiac Surgery

OBJECTIVES

To investigate the specific clinical features of pain following cardiac surgery and evaluate the information derived from different pain measurement tools used to quantify and describe pain in this population.

METHODS

A prospective observational study was undertaken at two tertiary care hospitals in Australia. Seventy-two (72) adults (mean age, 63±11 years) were included following cardiac surgery via a median sternotomy. Participants completed the Patient Identified Cardiac Pain using numeric and visual prompts (PICP), the McGill Pain Questionnaire-Short Form version 2 (MPQ-2) and the Medical Outcome Study 36-item version 2 (SF-36v2) Bodily Pain domain (BP), which were administered prior to hospital discharge, 4 weeks and 3 months postoperatively.

RESULTS

Participants experienced a high incidence of mild (n=45, 63%) to moderate (n=22, 31%) pain prior to discharge, which reduced at 4 weeks postoperatively: mild (n=28, 41%) and moderate (n=5, 7%) pain; at 3 months participants reported mild (n=14, 20%) and moderate (n=2, 3%) pain. The most frequent location of pain was the anterior chest wall, consistent with the location of the surgical incision and graft harvest. Most participants equated "pressure/weight" to "aching" or a "heaviness" in the chest region (based on descriptor of pain in the PICP) and the pain topography was persistent at 4 weeks and 3 months postoperatively. Each pain measurement tool provided different information on pain location, severity and description, with significant change (p<0.005) over time.

CONCLUSION

Mild-to-moderate pain was frequent after sternotomy, improved over time and was mostly located over the incision and mammary (internal thoracic) artery harvest site. Persistent pain at 3 months remained a significant problem in the community within this surgical population.

Postoperative Multimodal Analgesia in Cardiac Surgery

Multimodal pain management of cardiac surgical patients is a paradigm shift in postoperative care. This promising approach features complementary medications and techniques that spare opioids and improves symptomatic and functional recovery. Although the specific elements remain to be defined, the collaboration of the health care team and patient and continuous iterative programmatic improvements are important pillars of this approach.

Effects of Education on Nurses' Knowledge and Attitudes of Pain Management in a Postoperative Cardiovascular Unit

BACKGROUND

This project explores the impact of an educational in-service on nurses' knowledge and attitudes toward pain on a postoperative cardiovascular unit.

METHOD

A convenience sample of nurses employed on the postoperative cardiovascular intensive care unit (n = 82) were asked to participate in this project, with 74 nurses attending the in-service training. Surveys that were 70% complete were used for analysis (preeducation, n = 22; posteducation, n = 24).

RESULTS

The results from this project demonstrated that the use of a brief educational in-service is effective and efficient in increasing nurses' knowledge and attitudes related to pain management in this group of nurses. Posteducation survey scores were significantly higher than preeducation survey scores (p < .001).

CONCLUSION

These findings suggest that a brief educational in-service on pain management can improve nurses' knowledge and attitudes on pain management in this postoperative cardiovascular unit. [J Contin Educ Nurs. 2020;51(8):377-383.].

Pectointercostal Fascial Block (PIFB) as a Novel Technique for Postoperative Pain Management in Patients Undergoing Cardiac Surgery

OBJECTIVE

To determine the efficacy of pectointercostal fascial block in relieving postoperative pain in patients undergoing cardiac surgery.

DESIGN

Single-blinded, prospective, randomized controlled trial.

SETTING

Single-center tertiary care teaching hospital.

PARTICIPANTS

A total 40 participants undergoing cardiac surgery aged 18 to 80 years.

INTERVENTIONS

Subjects were categorized into 2 groups of 20 each. In group 2 participants (interventional group), bilateral pectointercostal fascial block was given using ropivacaine injection 0.25% after completion of surgery, before shifting to the intensive care unit.

MEASUREMENTS AND MAIN RESULTS

Postoperative pain was measured after extubation at 0, 3, 6, and 12 hours, using a numeric rating scale. Pain in group 2 was significantly less and lasted for a longer duration than in group 1. Fentanyl requirement was significantly higher in group 1 (1.06 ± 0.12 µ/kg) than in group 2 (0.82 ± 0.19 µ/kg).

CONCLUSIONS

Pectointercostal fascial block is an easy and efficient technique to reduce postoperative pain after cardiac surgery.

Effect of Cold Application on Chest Incision Pain Due to Deep Breathing and Cough Exercises

BACKGROUND

We determined the effect of cold application after coronary artery bypass graft surgery on chest incision pain due to deep breathing and coughing exercises. Thoracotomy performed for coronary artery bypass graft surgery is one of the most painful surgical procedures. This pain prevents deep breathing and effective coughing. These problems increase the risk of morbidity in the postoperative period.

AIMS

This study aimed to determine the effect of cold application after CABG surgery on chest incision pain due to deep breathing and cough exercises.

DESIGN

Experimental study with control group and repeated measurements.

SETTINGS

Patients were selected through convenience sampling in the Cardiovascular Surgery Intensive Care Unit at a hospital.

PARTICIPANTS

The study was conducted with 57 patients who underwent open heart surgery (29 and 28 in the experimental and control groups, respectively).

METHODS

Repeated pain assessment was performed before, immediately after, and 5 min after deep breathing and coughing exercises performed in 4 periods at 2-h intervals. The first pain assessment was performed 24 h postoperatively. In the first and third assessments of the experimental group, pain was recorded before the exercise; the exercise was performed 15 min after cold gel pack application to the incision area. Pain was assessed before, immediately after, and 5 min after exercise using the Short- Form McGill Melzack Pain Questionnaire.

RESULTS

Reduction in pain severity within and between the groups was statistically significant in the first and third evaluations (p = .001).

CONCLUSIONS

The results provide evidence to support the use of cold gel pack.

Factors Associated with Postoperative Pain among Patients after Cardiac Surgery in the Tertiary Care Teaching Hospital of Karachi, Pakistan

Background

Pain is the subjective feeling of an individual, which affects the overall recovery of patients after cardiac surgery. Postoperative pain is the most inadequately managed symptom of cardiac surgery. Subsequently, there are many factors that can either hinder or facilitate pain management, including patients' beliefs, cultural values, physiological features, hospital policies, and healthcare providers' knowledge and beliefs. The purpose of this research was to identify factors associated with postoperative pain and its management, after cardiac surgery, among patients in a tertiary care hospital in Karachi, Pakistan.

Methods

Quantitative correlational study design was employed to attain the study purpose. Data were collected from 136 adult cardiac surgery patients admitted in the Cardiothoracic Surgery (CTS) Department, of tertiary care hospital. A self-developed questionnaire tool was used to gather information from patients. Data was then analyzed on SPSS version 19. Mann-Whitney U, Kruskal Wallis, and Spearman tests were applied to find the associations between the pain levels and of the independent variables.

Results

The mean pain scores of the first, second, and third postoperative days were found to be 2.98, 2.96, and 2.98, respectively. The findings also showed that BMI and the types of surgery were significantly associated with postoperative pain. Patients' beliefs regarding drug dependency, fear of adverse effects, and postoperative physical activities were also associated with pain. Furthermore, the nurses' education level and reluctance in medication administration due to fear of adverse effects were found to be significant too.

Conclusion

The study identified some of the important factors that were associated with postoperative pain. The results suggest the need for the enhancement of patients' education on drug dependency, adverse effects, and physical activity, before cardiac surgery. The nurses should be educated on pain management keeping the patients' culture and other perceptions of pain in mind.

Transversus thoracis muscle plane block in cardiac surgery: a pilot feasibility study

Introduction

Cardiac surgery patients often experience significant pain after median sternotomy. The transversus thoracis muscle plane (TTP) block is a newly developed, single-shot nerve block technique that provides analgesia for the anterior chest wall. In this double-blind pilot study, we assessed the feasibility of performing this novel block as an analgesic adjunct.

Methods

All patients aged 18–90 undergoing elective cardiac surgery were randomized to the block or standard care control group on admission to the intensive care unit after surgery. Under ultrasound guidance, patients in the block group received the TTP block with 20 mL of either 0.3% or 0.5% ropivacaine bilaterally, based on weight. The control group did not receive any injections. All blocks were performed by a single anesthesiologist, and data collection was performed by blinded assessors. The primary feasibility outcomes were rate of recruitment, adherence, and adverse events. The rate of recruitment was defined as the ratio of patients giving informed consent to the number of eligible patients who were approached to participate. Secondary outcomes included 12-hour and 24-hour Numeric Rating Scale (NRS) pain scores, 24-hour hydromorphone and acetaminophen requirements, time to extubation, time to first opioid administration, and patient satisfaction (on a yes/no questionnaire) at 24 hours.

Results

Twenty patients were approached for this study and 19 were enrolled. Eight patients received the intended intervention in each group. The recruitment rate was 95% of all approached eligible patients, and the adherence rate to treatment group was 94%. There were no block-related adverse events. The mean (SD) NRS pain scores at rest were 3.3 (3.2) in the block group vs 5.6 (3.2) in the control group at 12 hours. At 24 hours, the pain scores were 4.1 (3.9) vs 4.1 (3.3) in the block and control group, respectively. The mean (SD) 24-hour hydromorphone administration was 1.9 (1.1) mg in the block group vs 1.8 (0.9) mg in the control group.

Discussion

The TTP block is a novel pain management strategy poststernotomy. The results reveal a high patient recruitment, adherence, and satisfaction rate, and provide some preliminary data supporting safety.

Trial registration number

NCT03128346.

The Impact of Using Ice on Quality of Pain Associated with Chest Drain Removal in Postcardiac Surgery Patients: An Evidence-Based Care

Background:

Patients undergoing cardiothoracic surgery require the placement of at least one chest drain. Chest Drain Removal (CDR) has been considered to be a painful event in patient’s postoperative recuperation.

Objective:

This study aimed to evaluate the impact of using ice on quality of pain associated with CDR in adult patients undergoing cardiac surgery

Materials and Methods:

This randomized, observer-blind, crossover trial was done on 51 post-cardiac surgery patients who had two chest drains in the Mashhad Heart Center in Iran. The patients were assigned to ice, placebo, and control groups. Ice and placebo bags were used over the region around the chest drains for 20 minutes prior to CDR. The quality of pain was assessedviaShort-Form McGill Pain Questionnaire (SF-MPQ) before and after CRT. The data were analyzed through the SPSS software using ANOVA, Kruskal-Wallis, and Chi-square tests.

Results:

The study findings revealed that the three groups were not significantly different regarding pain quality before CDR (p=0.24). However, the ice bag group (4.6±4.4) was significantly different from the placebo (8.1±6.9) and control groups (7.1±5.3) concerning the pain quality score immediately after CDR (p<0.05). The results of chi-square test also showed that the three groups were significantly different regarding “hot-burning” (p=0.009). However, no significant differences were observed with regard to other items of SF-MPQ.

Conclusion:

The results indicated that ice bag application could be used as an effective, safe, and inexpensive non-pharmacological intervention to reduce patients’ pain and increase their comfort during CDR.

Pain process of patients with cardiac surgery-Semantic annotation of electronic patient record data

AIMS AND OBJECTIVES

To describe and compare the pain process of the patients' with cardiac surgery through nurses' and physicians' documentations in the electronic patient records.

BACKGROUND

Postoperative pain assessment and management should be documented regularly, to ensure optimal pain care process for patients. Despite availability of evidence-based guidelines, pain assessment and documentation remain inadequate.

DESIGN

A retrospective patients' record review.

METHODS

The original data consisted of the electronic patient records of 26,922 patients with a diagnosed heart disease. A total of 1,818 care episodes of patients with cardiac surgery were selected from the data. We used random sampling to obtain 280 care episodes for annotation. These 280 care episodes contained 2,156 physician reports and 1,327 days of nursing notes. We developed an annotation manual and schema, and then, we manually conducted semantic annotation on care episodes, using the Brat annotation tool. We analysed the annotation units using thematic analysis. Consolidated criteria for reporting qualitative research guideline was followed in reporting where appropriate in this study design.

RESULTS

We discovered expressions of six different aspects of pain process: (a) cause, (b) situation, (c) features, (d) consequences, (e) actions and (f) outcomes. We determined that five of the aspects existed chronologically. However, the features of pain were simultaneously existing. They indicated the location, quality, intensity, and temporality of the pain and they were present in every phase of the patient's pain process. Cardiac and postoperative pain documentations differed from each other in used expressions and in the quantity and quality of descriptions.

CONCLUSION

We could construct a comprehensive pain process of the patients with cardiac surgery from several electronic patient records. The challenge remains how to support systematic documentation in each patient.

RELEVANCE TO CLINICAL PRACTICE

The study provides knowledge and guidance of pain process aspects that can be used to achieve an effective pain assessment and more comprehensive documentation.

Validation of the Fitbit Flex in an Acute Post-Cardiac Surgery Patient Population

Purpose: This study examined the validity of the Fitbit Flex activity monitor for step count and distance walked among post-cardiac surgery patients. Method: Participants (n=20) from a major urban cardiac surgery centre were recruited 1-2 days before hospital discharge. The Fitbit Flex step count and distance walked outputs and video recording of each participant performing the 6-minute walk test were collected. Fitbit Flex output was compared with criterion measures of manual step count obtained from the video recording and manual measurement of distance walked. Statistical analysis compared the output and criterion measures using paired sample t-tests, Pearson correlation coefficients, Lin's concordance correlations, and Bland-Altman plots. Sub-analysis compared slower walking (<0.8 m/s; n=11) and faster walking (≥0.8 m/s; n=8) group speeds (1 participant was excluded from analysis). Results: Steps counted and distance walked were significantly different between the Fitbit Flex outputs and criterion measures (p<0.05). The Fitbit Flex steps counted and distance walked showed moderate association with manual measure steps counted (r=0.67) and distance walked (r=0.45). Lin's concordance coefficients revealed a lack of agreement between the Fitbit Flex and the criterion measurement of both steps counted (concordance correlation coefficient [CCC]=0.43) and distance walked (CCC=0.36). The percentage of relative error was -18.6 (SD 22.7) for steps counted and 25.4 (SD 45.8) for distance walked. Conclusions: The Fitbit Flex activity monitor was not a valid measure of step count and distance walked in this sample of post-cardiac surgery patients. The lack of agreement between outputs and criterion measures suggests the Fitbit Flex alone would not be an acceptable clinical outcome measure for monitoring walking progression in the early postoperative period.

Bilateral sternal infusion of ropivacaine and length of stay in ICU after cardiac surgery with increased respiratory risk: A randomised controlled trial

BACKGROUND

The continuous bilateral infusion of a local anaesthetic solution around the sternotomy wound (bilateral sternal) is an innovative technique for reducing pain after sternotomy.

OBJECTIVE

To assess the effects of the technique on the need for intensive care in cardiac patients at increased risk of respiratory complications.

DESIGN

Randomised, observer-blind controlled trial.

SETTING

Single centre, French University Hospital.

PATIENTS

In total, 120 adults scheduled for open-heart surgery, with one of the following conditions: age more than 75 years, BMI >30 kg m, chronic obstructive pulmonary disease, active smoking habit.

INTERVENTION

Either a bilateral sternal infusion of 0.2% ropivacaine (3 ml h through each catheter; 'intervention' group), or standardised care only ('control' group). Analgesia was provided with paracetamol and self-administered intravenous morphine.

MAIN OUTCOME MEASURES

The length of time to readiness for discharge from ICU, blindly assessed by a committee of experts.

RESULTS

No effect was found between groups for the primary outcome (P = 0.680, intention to treat); the median values were 42.4 and 37.7 h, respectively for the control and intervention groups (P = 0.873). Similar nonsignificant trends were noted for other postoperative delays. Significant effects favouring the intervention were noted for dynamic pain, patient satisfaction, occurrence of nausea and vomiting, occurrence of delirium or mental confusion and occurrence of pulmonary complications. In 12 patients, although no symptoms actually occurred, the total ropivacaine plasma level exceeded the lowest value for which neurological symptoms have been observed in healthy volunteers.

CONCLUSION

Because of a small size effect, and despite significant analgesic effects, this strategy failed to reduce the time spent in ICU.

TRIAL REGISTRATION

EudraCT (N°: 2012-005225-69); ClinicalTrials.gov (NCT01828788).

Is it safe and practical to use a Foley catheter as a chest tube for lung cancer patients after lobectomy? A prospective cohort study with 441 cases

OBJECTIVE

This study was conducted to explore the feasibility and safety of postoperative chest drainage with a Foley catheter for lung cancer patients undergoing a video-assisted thoracoscopic surgery (VATS) lobectomy.

METHODS

Data from lung cancer patients who underwent a VATS lobectomy with insertion of a catheter (Foley catheter or 28-F chest tube) were analysed. A total of 441 patients were included preoperatively for participation, with 208 patients in the Foley catheter group and 233 in the 28-F group.

RESULTS

In the Foley catheter group, a shorter mean number of days was required until chest tube removal after lobectomy (2.6 ± 1.3 vs. 3.5 ± 2.0 d, P < 0.001) and postoperative length of stay was shorter (3.8 ± 2.5 vs. 5.2 ± 4.1 d, P < 0.001); The 28-F group had a higher average VAS score than did the Foley catheter group at 6 h (P = 0.025), and 48 h (P < 0.001) after VATS lobectomy as well as at 6 h, 24 h, 48 h, 72 h, 30 days and 90 days after chest tube removal (P < 0.001). Regarding postoperative pulmonary complications (PPCs) and chest tube removal-related complications, the rate of PPCs was not found to be significant, and a significantly higher proportion of disordered wound healing at the drainage site was observed in the 28-F group (5.8%, 12/208 vs. 11.6%, 27/233; P = 0.043).

CONCLUSION

The study indicated that placement of Foley catheter vs. 28-F chest tube was associated with a statistically significant but clinically modest reduction in pain, with shorter mean days until chest tube removal after lobectomy, shorter in-hospital stay, and a smaller proportion of disordered wound healing at the drainage site. These results indicate the feasibility and safety of postoperative chest drainage with a Foley catheter for lung cancer patients undergoing VATS lobectomy.

CLINICAL REGISTRATION NUMBER

ChiCTR1800014816.

Physiotherapy mobility and walking management of uncomplicated coronary artery bypass graft (CABG) surgery patients: a survey of clinicians' perspectives in Australia and New Zealand

Background: This study aimed to determine current mobility and walking management by physiotherapists of patients undergoing coronary artery bypass graft (CABG) surgery, the clinical milestones expected and physiotherapists' perception of the severity of pain experienced by patients after surgery. Design: Cross sectional study using a questionnaire. Methods: All hospitals in Australia and New Zealand that perform cardiac surgery (n = 54) were invited to complete a questionnaire. Findings: Forty-one questionnaires were returned and analysed (response rate 76%). Walking distance was a clinical milestone after CABG surgery. Walking and transferring patients from bed to chair required the most time of physiotherapists during one treatment session. Physiotherapists perceived that patients experienced most pain on day one after surgery [mean (SD)] visual analogue scale (VAS) 41 (16) mm and this reduced by day four to VAS 15 (10) mm. Patients' pain was perceived to be significantly higher after physiotherapy sessions compared with before (p < 0.01). Thirty-seven respondents (90%) believed that patients' pain was well managed for physiotherapy treatments. A majority of the respondents (68%) believed that pain was not a limiting factor in the distance patients walked in a physiotherapy session and most (90%) believed that general fatigue limited walk distance. Conclusion: This research provides current mobility and walking management by physiotherapists of patients undergoing CABG surgery in Australia and New Zealand.

Impact of intrathecal morphine analgesia on the incidence of pulmonary complications after cardiac surgery: a single center propensity-matched cohort study

Background

Acute pain and systemic opioids may both negatively impact respiratory function after cardiac surgery. This study analyzes the local practice of using intrathecal morphine analgesia (ITMA) with minimal parenteral opioid administration in cardiac surgery, specifically the impact on postoperative pulmonary complications (PPCs).

Methods

Data from adult patients who underwent elective cardiac surgery between January 2002, and December 2013 in a single center were analyzed. Propensity scores estimating the likelihood of receiving ITMA were used to match (1:1) patients with ITMA and patients with intravenous analgesia (IVA). Primary outcome was PPCs, a composite endpoint including pneumonia, adult respiratory distress syndrome, and any type of acute respiratory failure. Secondary outcomes were in-hospital mortality, cardiovascular complications, and length of stay in the intensive care unit (ICU) and hospital.

Results

From a total of 1′543 patients, 920 were treated with ITMA and 623 with IVA. No adverse event consequent to the spinal puncture was reported. Propensity score matching created 557 balanced pairs. The occurrence of PPCs in patients with ITMA was 8.1% vs. 12.8% in patients with IVA (odds ratio, 0.6; 95% CI, 0.40–0.89; p = 0.012). Fewer patients with ITMA had a prolonged stay in the ICU (> 4 days; 16.5% vs. 21.2%, p = 0.047) or in the hospital (> 15 days; 25.5% vs. 31.8%. p = 0.024). In-hospital mortality and cardiovascular complications did not differ significantly between the two groups.

Conclusion

In this study involving cardiac surgical patients, ITMA was safely applied and was associated with fewer PPCs.

Electronic supplementary material

The online version of this article (doi:10.1186/s12871-017-0398-z) contains supplementary material, which is available to authorized users.

Nurse and patient factors that influence nursing time in chest tube management early after open heart surgery: A descriptive, correlational study

PURPOSE

Determine nurse characteristics and patient factors that affect nurses' time in managing chest tubes in the first 24-hours of critical-care stay.

DESIGN

Prospective, descriptive.

METHODS

Cardiovascular critical-care nurses and post-operative heart surgery patients with chest tubes were enrolled from a single center in Ohio. Nurses completed case report forms about themselves, comfort and time in managing chest tubes, chest tube placement and management factors. Analysis included correlational and comparative statistics; Bonferroni corrections were applied, as appropriate.

RESULTS

Of 29 nurses, 86.2% were very comfortable managing chest tubes and oozing/non-secure dressings, but only 41.4% were very comfortable managing clogged chest tubes. Of 364 patients, mean age was 63.1 (±12.3) years and 36% had previous heart surgery. Total minutes of chest tube management was higher with≥3 chest tubes, tube size <28 French, and when both mediastinal and pleural tubes were present (all p<0.001). In the first 4-hours, time spent on chest tubes was higher when patients had previous cardiac surgeries (p≤0.002), heart failure (p<0.001), preoperative anticoagulant medications (p=0.031) and reoperation for postoperative bleeding/tamponade (p=0.005).

CONCLUSIONS

Time to manage chest tubes can be anticipated by patient characteristics. Nurse comfort with chest tube-related tasks affected time spent on chest tube management.

[Perioperative gabapentin and pregabalin in cardiac surgery: a systematic review and meta-analysis]

OBJECTIVES

Sternotomy for cardiac surgeries causes significant postoperative pain and when not properly managed may cause significant morbidity. As neuropathic pain is a significant component here, gabapentin and pregabalin may be effective in these patients and may reduce postoperative opioid consumption. The purpose of this systematic review was to find out efficacy of gabapentin and pregabalin in acute postoperative pain after cardiac surgery.

METHODS

Published prospective human randomized clinical trials, which compared preoperative and/or postoperative gabapentin/pregabalin with placebo or no treatment for postoperative pain management after cardiac surgery has been included in this review.

RESULTS

Four RCTs each for gabapentin and pregabalin have been included in this systematic review. Three gabapentin and two pregabalin studies reported decrease in opioid consumption in cardiac surgical patients while one gabapentin and two pregabalin studies did not. Three RCTs each for gabapentin and pregabalin reported lower pain scores both during activity and rest. The drugs are not associated with any significant complications.

CONCLUSION

Despite lower pain scores in the postoperative period, there is insufficient evidence to recommend routine use of gabapentin and pregabalin to reduce opioid consumption in the cardiac surgical patients.

Osteopathic Manipulative Treatment Improves Heart Surgery Outcomes: A Randomized Controlled Trial

BACKGROUND

Controlling sternal pain after heart surgery is important to reduce the risk of postoperative complications, but pain is often undertreated because of contraindications and side effects of analgesic drugs. Recently, osteopathic manipulative treatment (OMT) was demonstrated to reduce pain in different clinical contexts, suggesting its potential utility after cardiac surgery. The aim of this open-label, controlled study is to assess whether OMT contributes to sternal pain relief and improves postoperative outcomes.

METHODS

Eighty post-sternotomy adult inpatients were randomly allocated one to one to receive a standardized cardiorespiratory rehabilitation program alone (control group) or combined with OMT. Pain intensity and respiratory functional capacity were quantified by the Visual Analogue Scale score and by a standardized breathing test, at the start and end of rehabilitation.

RESULTS

At the start of rehabilitation, the control group and the OMT group had similar Visual Analogue Scale median scores (controls 4, interquartile range [IQR]: 2 to 5; OMT 4, IQR: 3 to 5; p = not significant) and mean inspiratory volumes (controls 825 ± 381 mL; OMT 744 ± 291 mL; p = not significant). At the end of rehabilitation, the OMT group had a lower Visual Analogue Scale median score (controls 3, IQR: 2 to 4; OMT 1, IQR: 1 to 2; p < 0.01) and higher mean inspiratory volume (controls 1,400 ± 588 mL; OMT 1,781 ± 633 mL; p < 0.01). The analgesic drug intake was similar in the two groups. The hospitalization was shorter in the OMT group than in the control group (19.1 ± 4.8 versus 21.7 ± 6.3 days; p < 0.05).

CONCLUSIONS

The combination of standard care with OMT is effective in inducing pain relief and functional recovery, and significantly improves the management of patients after heart surgery with sternotomy.

Translation and Validation of the Thai Version of a Modified Brief Pain Inventory: A Concise Instrument for Pain Assessment in Postoperative Cardiac Surgery

BACKGROUND

Acute pain after cardiac surgery can be assessed using validated instruments such as the modified interference subscale of the Brief Pain Inventory (mod-BPI). Despite the available knowledge, the Thai version of a mod-BPI has not yet been presented.

OBJECTIVES

To translate a mod-BPI into the Thai language (BPI-T) and to validate it in acute pain after cardiac surgery.

METHODS

This multisetting, cross-sectional study was done from 4 cardiac centers. With a convenience sampling technique, 132 cardiac surgery patients were enrolled during the first 72 postoperative hours. A BPI-T composed of 4 items on the intensity subscale and 6 items on the interference subscale was translated following Brislin's model. Convergent validity against the numeric rating scale (NRS), confirmatory factor analysis (CFA), and internal consistency reliability were examined.

RESULTS

Of the total sample, 70% experienced moderate to severe pain (cutoff points of worst pain ≥ 4/10), and 65% had moderate to severe interference with deep breathing and coughing, 53% with general activity, and 49% with walking. The CFA confirmed the 2-factor structure of intensity and interference subscales consistent with the original version (root-mean-square error of approximation = 0.08, comparative fit index = 0.95, χ² = 39.00, df = 27, χ² /df = 1.44, P = 0.06). The physical and mental subdimensions under the interference subscale were determined (standardized factor loading = 0.70 and 0.42, respectively). The BPI-T also has good internal consistency (Cronbach's alpha coefficients 0.76 and 0.85). Pearson's correlation coefficients at 0.35 to 0.70 supported the convergent validity to the NRS.

CONCLUSIONS

The BPI-T is a concise instrument for pain assessment in postoperative cardiac surgery.