Continuous positive airway pressure versus high-flow nasal cannula oxygen therapy for acute hypoxemic respiratory failure: A randomized controlled trial.

BACKGROUND AND OBJECTIVE: The relative effectiveness of initial non-invasive respiratory strategies for acute respiratory failure using continuous positive airway pressure (CPAP) or high-flow nasal cannula (HFNC) is unclear. METHODS: We conducted a multicenter, open-label, parallel-group randomized controlled trial to compare the efficacy of CPAP and HFNC on reducing the risk of meeting the prespecified criteria for intubation and improving clinical outcomes of acute hypoxemic respiratory failure. The primary endpoint was the time taken to meet the prespecified criteria for intubation within 28 days. RESULTS: Eighty-five patients were randomly assigned to the CPAP or HFNC group. Eleven (28.9%) in the CPAP group and twenty (42.6%) in the HFNC group met the criteria for intubation within 28 days. Compared with HFNC, CPAP reduced the risk of meeting the intubation criteria (hazard ratio [HR], 0.327; 95% CI, 0.148-0.724; p = 0.006). There were no significant between-group differences in the intubation rates, in-hospital and 28-day mortality rates, ventilator-free days, duration of the need for respiratory support, or duration of hospitalization for respiratory illness. Pulmonary oxygenation was significantly better in the CPAP group, with significantly lower pH and higher partial pressure of carbon dioxide, but there were no differences in the respiratory rate between groups. CPAP and HFNC were associated with few possibly causal adverse events. CONCLUSION: CPAP is more effective than HFNC at reducing the risk of meeting the intubation criteria in patients with acute hypoxemic respiratory failure.

Association of Advanced Airway Management in Preference to Intravenous Adrenaline on Neurological Outcomes Following Out-of-Hospital Cardiac Arrest.

AIM: To examine the preference for advanced airway management (AAM) or intravenous adrenaline administration (IVAd) provided by emergency medical services (EMS) for out-of-hospital cardiac arrest (OHCA) with shockable or nonshockable rhythms. METHODS: We conducted a retrospective analysis of a nationwide cohort of OHCA patients in Japan. Adult patients with witnessed collapse who were provided AAM and/or IVAd by EMS between June 2014 and December 2019 were divided into the AAM preferred group and IVAd preferred group, according to the initial advanced EMS intervention. The rates of favorable neurological outcomes (cerebral performance category 1 or 2 after 30 days) were compared between groups of patients with initial shockable or nonshockable rhythms. RESULTS: We analyzed 1365 and 9733 patients with initial shockable and nonshockable rhythms, respectively. Of these patients, 1033 (75.7%) with shockable and 7844 (80.6%) with nonshockable rhythms, respectively, were assigned to the AAM preferred group. Favorable neurological outcomes were significantly more frequent in the AAM preferred group than in the IVAd preferred group in patients with a shockable rhythm (13.6% vs 9.3%, respectively; P = 0.039), but not in those with a nonshockable rhythm (1.0% vs 0.8%, respectively; P = 0.509). Preferred AAM was independently associated with a higher probability of favorable neurological outcomes in patients with a shockable rhythm (adjusted odds ratio 1.66, 95% confidence interval 1.08-2.53, P = 0.020), but not in patients with a nonshockable rhythm. CONCLUSIONS: AAM provided by EMS in preference to IVAd was associated with the favorable neurological outcomes of OHCA patients with shockable rhythms.

The OROCHI (Observational Research of Clinical Course After mamusHI) Study: A Prospective, Observational, Multicenter Study on the Efficacy of Mamushi (Gloydius blomhoffii) Antivenom Serum.

BACKGROUND: Evidence on the efficacy of mamushi antivenom serum is limited. OBJECTIVE: To investigate the effectiveness of mamushi (Gloydius blomhoffii) antivenom serum. METHODS: The Observational Research Of the Clinical course after mamusHI bite (OROCHI) study was a prospective multicenter study conducted at 24 hospitals in Japan. Patients hospitalized due to mamushi bite were registered. The primary endpoint was the length of hospital stay. Secondary endpoints were adverse effects, pain (numerical rating scale), and grade of swelling. We performed a cohort analysis to compare outcomes between patients treated with mamushi antivenom serum (antivenom group) and those who were not treated with the serum (no-antivenom group). RESULTS: Overall, 106 patients were registered across 18 hospitals between April 22, 2020, and October 31, 2022. Of these, 92 were eligible for the analyses, with 53 and 39 in the antivenom and no-antivenom groups. The median (interquartile) length of hospital stay was not significantly different between the antivenom and no-antivenom groups (5 (3-6) days vs. 3 (1-8) days, P = 0.369). In multivariable analysis, the adjusted odds ratio for a hospital stay of >4 days was 1.331 in patients treated with mamushi antivenom serum (95% confidence interval (CI) = 0.744‒2.015, P = 0.574) and 6.154 in patients treated with cepharanthine (95% CI = 1.442-26.258, P = 0.014). Pain and the grade of swelling were worse in the antivenom group than in the no-antivenom group up to 24 h after arrival, but there were no differences in these outcomes after 48 h. CONCLUSION: Although the effectiveness of mamushi antivenom serum in reducing the length of hospitalization was not demonstrated, beneficial effects on pain and swelling were observed.

Three cases of neutralization of factor Xa inhibitors with andexanet alfa under rotational thromboelastography monitoring.

Background: Factor Xa inhibitors are direct oral anticoagulants that are extremely useful in clinical applications, safe, and do not require dose adjustment. It is desirable to be able to monitor their effects in the event of hemorrhagic complications requiring neutralization. However, it is difficult to monitor their activity and neutralization using conventional coagulation tests. Case Presentation: We report three patients taking factor Xa inhibitors who underwent rotational thromboelastography (ROTEM) monitoring before and after neutralization with andexanet alfa. All three patients had hemorrhagic complications that required neutralization of their factor Xa inhibitors using andexanet alfa. One ROTEM parameter, the EXTEM clotting time (EXTEM-CT), was immediately shortened after andexanet alfa bolus administration, without subsequent extension of the EXTEM-CT assessed 4 h after the bolus dose. Conclusion: ROTEM parameters, particularly EXTEM-CT, might be useful for monitoring neutralization of factor Xa inhibitors.

Rapid rewarming rate associated with favorable neurological outcomes in patients with post-cardiac arrest syndrome patients treated with targeted temperature management.

Aim: To determine whether the rewarming rate is associated with neurological outcomes in patients with post-cardiac arrest syndrome treated with targeted temperature management (TTM) at 34°C. Methods: We conducted a retrospective analysis of a nationwide cohort study of out-of-hospital cardiac arrest in Japan. Adult patients who experienced a return of spontaneous circulation and completed TTM at 34°C between June 2014 and December 2019 were divided equally into three groups (slow, moderate, and rapid) according to their rewarming rates from 34°C to 36°C. The rates of favorable neurological outcomes (Cerebral Performance Category of 1-2 after 30 days) were compared among the groups, and the adjusted odds ratios for a favorable neurological outcome were calculated for the groups. Results: We analyzed 348, 357, and 358 patients in the slow, moderate, and rapid groups, respectively. The periods of rewarming from 34°C to 36°C were 41.9 ± 10.5, 22.4 ± 1.8, and 12.2 ± 3.6 h, respectively. The number of favorable neurological outcomes after 30 days was 121 (34.8%), 125 (35.0%), and 147 (41.1%), respectively, with no significant differences among the three groups (p = 0.145). Rapid rewarming was independently associated with a favorable neurological outcome compared with slow rewarming (adjusted odds ratio 1.57 [95% confidence interval 1.04-2.37]; p = 0.031). Conclusions: Rapid rewarming after TTM at 34°C was associated with a more favorable neurological outcome than slow rewarming.

Time Course of Coagulopathy Evaluated with Rotational Thromboelastometry in Patients with Severe Coronavirus Disease 2019.

Objectives Coronavirus disease 2019 (COVID-19) reportedly causes thromboembolic complications due to coagulopathy with hypercoagulability and a hypofibrinolytic state. We evaluated the time-course of coagulopathy in patients with severe COVID-19 from admission to discharge from our intensive-care unit (ICU). Methods We conducted a retrospective study of adults with severe COVID-19 admitted to our ICU between January 20, 2021, and March 31, 2022. We obtained clinical information, laboratory data, and rotational thromboelastometry (ROTEM) parameters at admission and discharge. Results Fifteen patients were included. Fibrinogen and D-dimer values did not change significantly but were above the normal ranges at admission and discharge. Regarding ROTEM parameters, the maximum clot firmness in fibrinogen function (FIBTEM), a marker of hypercoagulability, did not change significantly but was above the normal range at admission and discharge [median (interquartile range), admission vs. discharge: 31 (25-34) mm vs. 31 (27-32) mm, p=0.589]. The maximum lysis at 60 minutes in the extrinsic coagulation pathway (EXTEM) and intrinsic coagulation pathway (INTEM), as markers of the fibrinolytic function, were both significantly lower at discharge than at admission [median (interquartile range), admission vs. discharge: EXTEM, 3 (2-4) vs. 1 (0-2), p=0.011; INTEM, 3 (1-6) vs. 1 (0-2), p=0.008]. Conclusion This study revealed a persistent hypercoagulable state at ICU discharge and a worse hypofibrinolytic state at discharge than at admission. These results may contribute to a better understanding of coagulopathies in the acute to subacute phases of severe COVID-19.

Effects of cardiopulmonary resuscitation instructions on the outcomes of out-of-hospital cardiac arrest: An analysis of the JAAM-OHCA registry.

Aim: To determine whether dispatcher-provided cardiopulmonary resuscitation (CPR) instructions improve the outcomes of out-of-hospital cardiac arrest (OHCA). Methods: Cases registered in the Japanese Association for Acute Medicine Out-of-Hospital Cardiac Arrest (JAAM-OHCA) Registry between June 2014 and December 2019 were included. Cases in which the dispatcher provided CPR instructions to the bystander were included in the "Instructions" group", and cases without CPR instructions were included in the "No Instructions" group. The primary outcome was the proportion of patients with a favorable neurological outcome, defined as a Glasgow-Pittsburgh cerebral performance category scale of 1 to 2 at 1 month after OHCA. Results: Overall, 51,199 patients with OHCA were registered in the JAAM-OHCA Registry during the study period. Of these, 33,745 were eligible for the study, with 16,509 in the Instructions group and 17,236 in the No Instructions group. The proportion of patients with a favorable neurological outcome at 1 month after OHCA was inferior in the Instructions group than in the No Instructions group (2.3% versus 3.0%, p < 0.001). After adjustment for patient background characteristics, no association was found between CPR instructions provided by a dispatcher and favorable neurological outcomes at 1 month after OHCA (adjusted odds ratio, 1.000; 95% confidence interval, 0.869-1.151, p = 0.996). Conclusion: The present study found no clear clinical benefit of dispatcher-provided CPR instructions on the neurological outcomes of cases with OHCA.

A case of pulmonary edema due to guanfacine intoxication with measurement of serum guanfacine concentrations.

Guanfacine hydrochloride extended-release (GXR) is used to treat attention deficit hyperactivity disorder. It is a selective α2A-adrenorecepor agonist that was reported to cause QT prolongation and hypotension in the event of overdosing. We report the case of a 17-year-old man who took 226 tablets of GXR 3 mg for attempted suicide. He was found complaining of dyspnea, and emergency medical services were called. When the patient was transferred to our hospital, his Glasgow coma scale was 12 (E4V3M5). He was agitated and hypoxemic. He was intubated for invasive mechanical ventilation under sedation. His chest X-ray and computed tomography scan showed pulmonary edema. Transthoracic echocardiography showed markedly reduced cardiac function. His serum guanfacine concentration peaked on day 3 after admission. His pulmonary edema improved quickly after a decrease in serum guanfacine concentration, but cardiac decompensation persisted for about 1 month. This case reveals that the decline in cardiac function after guanfacine intoxication is prolonged even after its serum concentration has decreased.

Association between increased nonaerated lung weight and treatment failure in patients with de novo acute respiratory failure: Difference between high-flow nasal oxygen therapy and noninvasive ventilation in a multicentre retrospective study.

PURPOSE: To determine the association between lung collapse and treatment failure in high-flow nasal cannula oxygen therapy (HFNC) or noninvasive ventilation (NIV). METHODS: We performed a quantitative analysis of chest computed tomography in patients with de novo acute respiratory failure who received HFNC (HFNC group) or NIV (NIV group) between January 2012 and December 2017. In the HFNC and NIV group, the nonaerated lung weight were compared between patients in whom respiratory treatment succeeded or failed, respectively. We used logistic regression to examine the association between the nonaerated lung weight and treatment failure. RESULTS: Treatment failed in 70/118 (59%) patients in the HFNC group and 66/101 (65%) patients in the NIV group. The nonaerated lung weight was significantly greater in unsuccessfully treated patients than in successfully treated patients in the HFNC group (p = 0.005), but not in the NIV group (p = 0.535). Logistic regression revealed that greater nonaerated lung weight was associated with increased risk of HFNC failure (adjusted odds ratio 1.30 per 5% increase, 95% confidence interval 1.09-1.55, p = 0.003) but not of NIV failure. CONCLUSIONS: Patients with a greater nonaerated lung weight had a higher risk of HFNC failure, but not of NIV failure.

Comparison of high-flow nasal cannula oxygen therapy and non-invasive ventilation as first-line therapy in respiratory failure: a multicenter retrospective study.

AIM: To identify which subgroups of respiratory failure could benefit more from high-flow nasal cannula oxygen therapy (HFNC) or non-invasive ventilation (NIV). METHODS: We undertook a multicenter retrospective study of patients with acute respiratory failure (ARF) who received HFNC or NIV as first-line respiratory support between January 2012 and December 2017. The adjusted odds ratios (OR) with 95% confidence intervals (CI) for HFNC versus NIV were calculated for treatment failure and 30-day mortality in the overall cohort and in patient subgroups. RESULTS: High-flow nasal cannula oxygen therapy and NIV were used in 200 and 378 patients, and the treatment failure and 30-day mortality rates were 56% and 34% in the HFNC group and 41% and 39% in the NIV group, respectively. The risks of treatment failure and 30-day mortality were not significantly different between the two groups. In subgroup analyses, HFNC was associated with increased risk of treatment failure in patients with cardiogenic pulmonary edema (adjusted OR 6.26; 95% CI, 2.19-17.87; P < 0.01) and hypercapnia (adjusted OR 3.70; 95% CI, 1.34-10.25; P = 0.01), but the 30-day mortality was not significantly different in these subgroups. High-flow nasal cannula oxygen therapy was associated with lower risk of 30-day mortality in patients with pneumonia (adjusted OR 0.43; 95% CI, 0.19-0.94; P = 0.03) and in patients without hypercapnia (adjusted OR 0.51; 95% CI, 0.30-0.88; P = 0.02). CONCLUSION: High-flow nasal cannula oxygen therapy could be more beneficial than NIV in patients with pneumonia or non-hypercapnia, but not in patients with cardiogenic pulmonary edema or hypercapnia.

Severe Fever with Thrombocytopenia Syndrome Complicated with Pseudomembranous Aspergillus Tracheobronchitis in a Patient without Apparent Risk Factors for Invasive Aspergillosis.

Severe fever with thrombocytopenia syndrome (SFTS) is a tick-borne infectious disease. A 91-year-old woman was admitted to our intensive-care unit with SFTS, and she developed dyspnea with wheezes 5 days after admission. Bronchoscopy showed scattered white mold in her central airway. An airway tissue biopsy and culture of bronchial lavage fluid revealed fungal hyphae in the necrotic tissue, confirmed as Aspergillus fumigatus. She was thus diagnosed with pseudomembranous aspergillus tracheobronchitis. She had no common risk factors for invasive aspergillosis (IA). Patients with SFTS, even those without apparent risk factors for IA, may be at risk of developing IA.

Hyperoxemia during the hyperacute phase of aneurysmal subarachnoid hemorrhage is associated with delayed cerebral ischemia and poor outcome: a retrospective observational study.

OBJECTIVE: The harmful effects of hyperoxemia have been reported in critically ill patients with various disorders, including those with brain injuries. However, the effect of hyperoxemia on aneurysmal subarachnoid hemorrhage (aSAH) patients is unclear. In this study the authors aimed to determine whether hyperoxemia during the hyperacute or acute phase in patients with aSAH is associated with delayed cerebral ischemia (DCI) and poor neurological outcome. METHODS: In this single-center retrospective study, data from patients with aSAH treated between January 2011 and June 2017 were reviewed. The patients were classified into groups according to whether they experienced DCI (DCI group and non-DCI group) and whether they had a poor outcome at discharge (poor outcome group and favorable outcome group). The background characteristics and time-weighted average (TWA) PaO2 during the first 24 hours after arrival at the treatment facility (TWA24h-PaO2) and between the first 24 hours after arrival and day 6 (TWA6d-PaO2), the hyperacute and acute phases, respectively, were compared between the groups. Factors related to DCI and poor outcome were evaluated with logistic regression analyses. RESULTS: Of 197 patients with aSAH, 42 patients experienced DCI and 82 patients had a poor outcome at discharge. TWA24h-PaO2 was significantly higher in the DCI group than in the non-DCI group (186 [141-213] vs 161 [138-192] mm Hg, p = 0.029) and in the poor outcome group than in the favorable outcome group (176 [154-205] vs 156 [136-188] mm Hg, p = 0.004). TWA6d-PaO2 did not differ significantly between the groups. Logistic regression analyses revealed that higher TWA24h-PaO2 was an independent risk factor for DCI (OR 1.09, 95% CI 1.01-1.17, p = 0.037) and poor outcome (OR 1.17, 95% CI 1.06-1.29, p = 0.002). CONCLUSIONS: Hyperoxemia during the first 24 hours was associated with DCI and a poor outcome in patients with aSAH. Excessive oxygen therapy might have an adverse effect in the hyperacute phase of aSAH.

Variability in Treatment for Carbon Monoxide Poisoning in Japan: A Multicenter Retrospective Survey.

BACKGROUND: The aim of this study was to identify practice differences in the treatment of carbon monoxide (CO) poisoning with or without hyperbaric oxygen (HBO2) therapy in Japan. MATERIALS AND METHODS: Using an online survey website (Google form), we created a questionnaire and invited interested institutions to join the COP-J Study, a prospective observational study of CO poisoning in Japan. RESULTS: Forty-eight (63%) of 76 institutions replied to the questionnaire. Thirty-three institutions (69%) administered HBO2 therapy to patients with CO poisoning, and 15 institutions (31%) did not. Consciousness disturbance on arrival, exposure to CO for a long time, and elevation of arterial carboxyhemoglobin (CO-Hb) were the major indications for HBO2 therapy. The maximum therapeutic pressures were 2.0, 2.5, and 2.8 atmospheres absolute (ATA) at 19 (58%), 6 (18%), and 8 (24%) institutions, respectively. The number of HBO2 sessions on the first day was 1-3, and 1-7 sessions were administered on days 2-7. Seventeen (35%) institutions treated patients with delayed neurological sequelae (DNS) and 15 of them used HBO2 therapy for DNS. CONCLUSIONS: This survey indicates that HBO2 therapy for CO poisoning was varied in both the indications and practice regimens used in Japan.

Early enteral nutrition is associated with reduced in-hospital mortality from sepsis in patients with sarcopenia.

PURPOSE: To determine whether the association of early enteral nutrition (EEN) with mortality from sepsis differs between patients with and without sarcopenia. MATERIALS AND METHODS: We retrospectively reviewed septic patients treated at our centre between January 2010 and August 2017. The skeletal muscle area (SMA) at the level of the third lumbar vertebra was measured with CT on admission, and sarcopenia was defined as SMA < 80% of the predicted value. Patients were divided into two subgroups (sarcopenic and non-sarcopenic patients), and in-hospital mortality was compared in patients treated with and without EEN within each subgroup. We used logistic regression to examine factors associated with in-hospital mortality in each subgroup. RESULTS: EEN was administered to 35/91 sarcopenic patients and 43/100 non-sarcopenic patients. In-hospital mortality did not differ between non-sarcopenic patients with EEN and those without EEN (16% vs 16%, P = 0.947), but was significantly lower in sarcopenic patients with EEN than in those without EEN (9% vs 34%, P = 0.005). Logistic regression showed that EEN was independently associated with reduced in-hospital mortality in sarcopenic patients (OR 0.18, 95% CI 0.05-0.71, P = 0.014), but not in non-sarcopenic patients. CONCLUSIONS: EEN may be more beneficial in sarcopenic patients.

Extent of pleural effusion on chest radiograph is associated with failure of high-flow nasal cannula oxygen therapy.

PURPOSE: The purpose of the study was to determine whether pleural effusion (PE) is associated with a failure of high-flow nasal cannula (HFNC) therapy. MATERIALS AND METHODS: We conducted a single-center retrospective study. Seventy-three patients with acute respiratory failure given HFNC therapy between January 2012 and December 2014 were reviewed. HFNC failure was defined as intubation or noninvasive positive pressure ventilation following HFNC therapy. The numbers of quadrants with consolidation or ground glass opacity were counted on chest radiographs performed within 24 hours before starting HFNC therapy, and the PE score was calculated. PE score was the original score, verified by the computed tomographic images of some of the study patients. RESULTS: Overall, 29 of 73 experienced HFNC failure. PE score was significantly greater in the HFNC failure group, but the number of quadrants with opacity was not significantly different. Age and Sequential Organ Failure Assessment (SOFA) score were significantly greater in the HFNC failure group. The PE (odds ratio, 1.49; 95% confidence interval, 1.10-2.02; P = .01) and SOFA (odds ratio, 1.33; 95% confidence interval, 1.05-1.68; P = .02) scores were independently associated with HFNC failure in multivariate analysis. CONCLUSIONS: The extent of PE on chest radiograph and SOFA score were associated with HFNC failure.

Splenic volume in severe sepsis is associated with disease severity and pneumococcal infection.

Aim: A small spleen, which is occasionally found in patients with pneumococcal sepsis, may increase pneumococcal susceptibility because of splenic malfunction. However, a small spleen may also originate from severe disease. We carried out a retrospective study to evaluate the association between splenic volume and severe pneumococcal sepsis or disease severity. Methods: We reviewed the medical records of 23 patients with severe pneumococcal sepsis treated at our institution between January 2004 and September 2015 (pneumococcal group) and 61 patients with severe non-pneumococcal bacteremia treated between April 2011 and September 2015 (control group). Splenic volume measured by abdominal computed tomography on admission was compared between the two groups. Correlations between Acute Physiology and Chronic Health Evaluation (APACHE) II scores and splenic volume on admission and the change in splenic volume from the non-septic state to admission were also determined. Results: Splenic volume on admission was significantly smaller (P = 0.001) and a small spleen was more frequent (P < 0.001) in the pneumococcal group. The APACHE II score was negatively correlated with splenic volume on admission (r = -0.46, P < 0.001) and the change in splenic volume (r = -0.44, P = 0.004). Pneumococcal infection (odds ratio 13.1, 95% confidence interval 2.6-65.7; P = 0.002) and APACHE II score (odds ratio 1.2, 95% confidence interval 1.1-1.3; P = 0.002) were independently associated with small spleen. Conclusion: Splenic volume decreased with increasing severity of severe sepsis. A small spleen was also associated with severe pneumococcal infection.

Cardiac arrest due to massive hemorrhage from uterine adenomyosis with leiomyoma successfully treated with damage control resuscitation.

Case: A 57-year-old woman was transferred to our emergency department by ambulance with cardiopulmonary arrest caused by massive genital bleeding. Cardiopulmonary resuscitation, including massive transfusion, was carried out and the return of spontaneous circulation was achieved. A giant uterine tumor was considered the source of the bleeding. Although hysterectomy was necessary to achieve definitive hemostasis, the patient was unable to tolerate the operation because of hemodynamic instability, acidosis, and coagulopathy. Therefore, we undertook vaginal gauze packing and uterine artery embolization to attain temporary hemostasis, which resulted in hemodynamic stabilization. Abdominal hysterectomy for definitive hemostasis was carried out 10 h after the embolization. Outcome: The patient made a good post-surgical recovery without any complications. Conclusion: In treating hemorrhagic shock due to uterine leiomyoma, damage-control resuscitation may be useful as a bridge prior to definitive hemostasis through hysterectomy.

Effects of mechanical chest compression device with a load-distributing band on post-resuscitation injuries identified by post-mortem computed tomography.

OBJECTIVE: To determine the effects of cardiopulmonary resuscitation (CPR) with AutoPulse™ (LDB-CPR) on post-resuscitation injuries identified by post-mortem computed tomography (PMCT). AutoPulse™ is a novel mechanical chest-compression device with a load-distributing band (LDB) that may affect post-resuscitation injury identified by PMCT. METHODS: We conducted a retrospective cohort study of non-traumatic adult out-of-hospital cardiac arrest patients whose death was confirmed in our emergency department between October 2009 and September 2014. Patients were divided according to whether LDB-CPR (LDB-CPR group) or manual CPR only (manual CPR only group) was performed. The background characteristics and post-resuscitation injuries identified by PMCT were compared between both groups. Logistic regression was used to identify risk factors for posterior rib fracture and abdominal injury. RESULTS: Overall, 323 patients were evaluated, with 241 (74.6%) in the LDB-CPR group. The total duration of CPR was significantly longer in the LDB-CPR group than in the manual CPR only group. Posterior rib fracture, hemoperitoneum, and retroperitoneal hemorrhage were significantly more frequent in the LDB-CPR group. The frequencies of anterior/lateral rib and sternum fracture were similar in both groups. Pneumothorax tended to be more frequent in the LDB-CPR group, although not significantly. LDB-CPR was an independent risk factor for posterior rib fracture (odds ratio 30.57, 95% confidence interval 4.15-225.49, P=0.001) and abdominal injury (odds ratio 4.93, 95% confidence interval 1.88-12.95, P=0.001). CONCLUSIONS: LDB-CPR was associated with higher frequencies of posterior rib fracture and abdominal injury identified by PMCT. PMCT findings should be carefully examined after LDB-CPR.

Long-lasting response to crizotinib in brain metastases due to EML4-ALK-rearranged non-small-cell lung cancer.

Anaplastic lymphoma kinase (ALK) rearranged non-small-cell lung cancer (NSCLC) is highly responsive to crizotinib, an oral ATP-competitive selective inhibitor of ALK. However, crizotinib exhibits extremely poor blood-brain barrier penetration; therefore, it is considered to play a limited role in the treatment of brain metastases. We present a case of a 50-year-old man with a diagnosis of ALK-rearranged NSCLC with brain metastasis and malignant pleural effusion. Despite the several systemic chemotherapy regimens and whole brain radiotherapy, brain metastasis was refractory; therefore, crizotinib was initiated. A CT scan showed a slight reduction in the brain metastasis and no change in intrathoracic disease 17 weeks after initiating crizotinib. Moreover, CT obtained 12 months after crizotinib treatment revealed brain metastasis without progression. To our knowledge, the present case is the second report of crizotinib-responsive brain metastases due to echinoderm microtubule-associated protein-like 4-ALK (EML4-ALK)-rearranged NSCLC.