Spa therapy relieves knee and shoulder pain:a randomized controlled trial

Objective:To study the effect of spa therapy on relieving knee and shoulder pain.Methods:Participants were randomized to an intervention group(n=26)or a control group(n=23).The intervention group received the hot spring intervention program(1-2 times a day for two weeks),while the control group didn’t receive any intervention.Primary outcomes were assessed by the Western Ontario and McMaster University Osteoarthritis Index(WOMAC)and Shoulder Pain and Disability Index(SPADI).Secondary outcomes were assessed by general physical symptoms and Short Form-36(SF-36)health survey.Results:All parameters before intervention were homogenous between the groups.At baseline,there was no significant difference in WOMAC and SPADI index between the two groups,but there was a statistically significant difference in blurred vision,which was worse in the intervention group than in the control group(P<0.05).After intervention,general physical symptoms were relieved significantly in the intervention group compared with the control group(P<0.05).WOMAC index,SPADI index,social functioning,and general physical symptoms were relieved significantly after intervention in the intervention group(P<0.05).There is a significant difference in the blurred vision before and after the comparison of the control group(P<0.05).Conclusion:Spa therapy may relieve knee and shoulder pain and improve general physical symptoms and quality of life.

Pain management of hemiplegic shoulder pain post stroke in patients from Nanjing,China

We selected 106 hemiplegic patients with shoulder pain hospitalized after stroke from three hospi- tals in Nanjing, China between February 2007 and January 2012. All patients had complete clinical data sets and accounted for 45.5% of the inpatients because of stroke. Results showed that the number of patients with hemiplegic shoulder pain post stroke increased yearly, attacking mainly males 50-69 years of age. Of 106 patients, there were 60 cases （56.6%） of adhesive capsulitis, 19 （17.9%） of shoulder subluxation, 14 （13.2%） of complex regional pain syndrome, and 13 （12.6%） of central pain. The main symptoms were shoulder pain （100%）, limit of shoulder mobility （98.1%）, and adhesion of the scapula （56.6%）. MRI of the shoulder showed tendon and ligament lesions （57.1%） and rotator cuff tear （38.1%）. 53.8% of central pain was related to the thalamus, in addition to the basal ganglia, brain stem, and cerebellopontine angle. Shoulder pain, upper limb motor function, and function independence were significantly improved after comprehensive rehabilitation. In par- ticular, electroacupuncture based on basic physical therapy exhibited efficacy on shoulder subluxa- tion and complex regional pain syndrome. Multiple linear regression results showed a negative re- lationship of efficacy of pain management with the attack period of shoulder pain, involvement of the posterior limb of the internal capsule, and duration between onset and rehabilitation treatment, but a positive correlation with pain-related education, pain regression period, and pain diagnosis.

Type A aortic dissection developed after type B dissection with the presentation of shoulder pain: A case report

BACKGROUND Aortic dissection(AD)is a life-threatening condition with a high mortality rate without immediate medical attention.Early diagnosis and appropriate treatment are critical in treating patients with AD.In the emergency department,patients with AD commonly present with classic symptoms of unanticipated severe chest or back pain.However,it is worth noting that atypical symptoms of AD are easily misdiagnosed.CASE SUMMARY A 51-year-old woman was first diagnosed with scapulohumeral periarthritis due to left shoulder pain.After careful examination of her previous medical history and contrast-enhanced computed tomography angiography,the patient was diagnosed with a new type A AD after chronic type B dissection in the ascending aorta.The patient was successfully treated with surgical replacement of the dissected aortic arch and remains in good health.CONCLUSION New retrograde type A AD after chronic type B dissection is relatively rare.It is worth noting that a physician who has a patient with suspected AD should be vigilant.Both patient medical history and imaging tests are crucial for a more precise diagnosis.

Therapeutic efficacy of acupuncture combined with neuromuscular joint facilitation in treatment of hemiplegic shoulder pain

BACKGROUND Stroke is a type of cerebrovascular disease with high prevalence,mortality,and onset of disability.As a neurodevelopmental therapy,neuromuscular joint facilitation(NJF)is widely used in the treatment of orthopedic and neurological disorders in the clinical practice.It is mainly used for central nervous system diseases or orthopedic diseases,movement disorders,and pain rehabilitation.According to related studies,NJF can also be used as a rehabilitation treatment in patients with hemiplegic shoulder pain(HSP).AIM To investigate the clinical efficacy of acupuncture combined with NJF in patients with HSP.METHODS Forty patients with HSP were randomly divided into a treatment group and a control group.The treatment group was treated with acupuncture combined with NJF and the control group was treated with acupuncture alone.All patients were assessed by using the visual analogue scale(VAS),Fugl-Meyer assessment(FMA),Barthel index(BI),and passive range of motion(PROM)before and after the training.All the clinical data were analyzed using SPSS 20.0 statistical software.RESULTS There was no statistical difference in the general characteristics between the two groups.In the terms of duration of treatment,age,and pre-treatment indicators,the two groups were comparable(P>0.05).After the treatment,VAS,PROM,BI,and FMA scores were significantly improved in the two groups of patients(P<0.05).The VAS,PROM and FMA scores were significantly higher in the treatment group than in the control group(P<0.05).However,there was no significant difference in BI scores between the two groups(P>0.05).CONCLUSION Both acupuncture alone and acupuncture combined with NJF in the treatment of HSP are effective,and can improve the clinical symptoms of patients.Acupuncture combined with NJF can improve the upper limb motor function,relieve pain,and increase joint mobility in patients with HSP.The combination therapy is better than acupuncture alone.However,there is no significant difference in improving the score of patients’self-care ability.

DEVELOPMENT OF CLINICAL STUDIES ON ACUPUNCTURE TREATMENT OF SHOULDER PAIN IN PATIENTS WITH WIND STROKE

In the present paper, the authors review some new results of acupuncture treatment of shoulder pain in stroke patients from ① application of filiform needle with different needling manipulations, ② selection and combination of acupoints, and ③ some special needling methods including point-injection. Generally, if acupuncture therapy is used in combination with other rehabilitation methods, the therapeutic effect of shoulder-pain-relief will be much better. Regarding the acupoint selection, both local acupoints and those of the yang meridians are primarily used in clinical practice. Further studies on treating shoulder pain of hemiplegia based upon the basic theory of TCM are necessary.

The Relationship between Neck and Shoulder Pain and the Sagittal Alignment of the Spine in Standing in Younger Generation

Background: The relationship between chronic neck and shoulder pain and posture remains controversial. The purpose of this study was to investigate the relationship between chronic neck and shoulder pain and spinal sagittal alignment in standing posture in younger generation. Methods: Subjects included 57 females and 32 males (average age, 29.9 ± 5.7 years). All subjects were 20s or 30s. Spinal curvature was assessed using SpinalMouse. The subjects were also divided into a normal group (VAS zero group) and a pain group by VAS results. Statistical analysis was performed by Student’s t-test. Significance was defined as p < 0.05. Results: The normal group and pain group included 29 and 60 subjects, respectively. In terms of location of pain, thirty-one subjects felt neck pain, 50 felt pain above the scapula, and 17 felt pain between the thoracic spine and scapula. Thoracic kyphosis and lumbar lordosis in the pain group were significantly higher than those in the normal group (p = 0.013 and p = 0.020, respectively). Thoracic kyphosis in subjects with neck pain or pain above scapula was significantly higher than that in subjects without pain (p = 0.0075 and p = 0.025, respectively). Lumbar lordosis in subjects with pain above the scapula or interscapula was significantly higher than that in subjects without pain (p = 0.016).

Neural Modulation of Hemiparetic Shoulder Pain by Repetitive Ultrasound-Guided Suprascapularis Nerve Block

Background: Neural blockade is widely used in clinical practice to alleviate acute or chronic pain, including pain during rehabilitation. To date there is little controlled evidence to confirm the efficacy of nerve blocks in hemiparetic shoulder pain after stroke. Design: This study is a prospective, open label, cohort trial reporting result from a cohort of stroke patients affected by shoulder pain. Aim: As a cohort study report, in which it is often firstly reported the possibility of an association between an observed effect and a specific environmental based on detailed clinical evaluations and histories, we aim to firstly provide clues in identifying Suprascapularis Nerve blockade as further valuable approach for shoulder pain after stroke. Population: We studied a cohort of patients affected by hemiparetic shoulder pain after Stroke. Methods: Our protocol foresees nerve blocks to be performed each 3 out of 4 days (treatment lasting 30 days) in conjunction with a rehabilitation program with the first aim to provide the window of opportunity to proceed with effective rehabilitation. 47 potential study subjects fulfilled the study criteria and were enrolled. Twenty-four subjects were randomised to the study Group to receive SSNB for the pain of their hemiparetic shoulder while 23 subjects randomized to the control Group whose member did not receive SSNB. They received serial blocks each 3 out of 4 days during rehabilitation.Results: Both treatment reported a reduction in the intensity of their shoulder pain, according to data collected from day 1 through day 42 (6 weeks). Study Group patients, receiving SSNBs, reported significant improvement from entry through the whole follow-up period. The efficiency data were higher for SSNB Group after 2 weeks and again for SSNb group at the end of treatment. Conclusion: Excellent pain relief was achieved in SSNB without clinically relevant complications, these patients having a better improvement on pain during rehabilitation, than the control subjects. Great efficacy has been achieved by combining a nerve block and rehabilitation. About Clinical Rehabilitation Impact, we believe that Suprascapularis nerve blocks can help the stroke survivors maintain an ambulatory or outpatient treatment status, maintain participation in a physical therapy or rehabilitation program, decrease the need for analgesics and in some cases lead to a complete pain relief.

Shoulder pain after abdominal laparoscopic operation： a multicenter study

Sboulder pain is the most common complication of laparoscopic operations.1 The incidence and severityof shoulder pain has been well documented.2 This complication was commonly regarded as the result of CO2 pneumoperitoneum, which induced extension and stimulation to the diaphragmatic muscle. The incidence and severity of shoulder pain was correlated to the pressure and duration of CO2 pneumoperitoneum.3,4 However, we noticed that in non-pneumoperitoneum laparoscopic operations, patients experienced a higher incidence and more severe post-operative shoulder pain. This was a challenge to the theory that pneumoperitoneum induces shoulder pain. Therefore a more detailed study was required to provide more objective data to explain this phenomenon.

Effectiveness of bee venom acupuncture in alleviating post-stroke shoulder pain: a systematic review and meta-analysis

BACKGROUND：Shoulder pain is a common complication of stroke.Bee venom acupuncture（BVA）is increasingly used in the treatment of post-stroke shoulder pain.OBJECTIVE：To summarize and evaluate evidence on the effectiveness of BVA in relieving shoulder pain after stroke.SEARCH STRATEGY：Nine databases,namely MEDLINE,EMBASE,the Cochrane Library,the China National Knowledge Infrastructure（CNKI）,the Japan Science and Technology Information Aggregator,Electronic（J-STAGE）,and four Korean medical databases,namely,the National Assembly Library,the Research Information Service System,the National Discovery for Science Leaders,and OASIS,were searched from their inception through August 2014 without language restrictions.INCLUSION CRITERIA：Randomized controlled trials（RCTs）were included if BVA was used at acupoints as the sole treatment,or as an adjunct to other treatments,for shoulder pain after stroke.DATA EXTRACTION AND ANALYSIS：Two review authors independently selected trials for inclusion,assessed methodological quality and extracted data.RESULTS：A total of 138 potentially relevant articles were identifi ed,4 of which were RCTs that met our inclusion criteria.The quality of studies included was generally low,and a preponderance of positive results was demonstrated.All four trials reported favorable effects of BVA on shoulder pain after stroke.Two RCTs assessing the effects of BVA on post-stroke shoulder pain,as opposed to saline injections,were included in the meta-analysis.Pain was signifi cantly lower for BVA than for saline injections（standardized mean difference on 10-cm visual analog scale：1.46 cm,95%CI=0.30–2.62,P=0.02,n=86）CONCLUSION：This review provided evidence suggesting that BVA is effective in relieving shoulder pain after stroke.However,further studies are needed to confi rm the role of BVA in alleviating post-stroke shoulder pain.Future studies should be conducted with large samples and rigorous study designs.

Can Ashi Points Stimulation Have Specific Effects on Shoulder Pain? A Systematic Review of Randomized Controlled Trials

Objective： To provide an evidence-based overview regarding the efficacy of Ashi points stimulation for the treatment of shoulder pain. Methods： A comprehensive search [PubMed, Chinese Biomedical Literature Database, China National Knowledge Infrastructure （CNKI）, Chongqing Weipu Database for Chinese Technical Periodicals （VIP） and Wanfang Database] was conducted to identify randomized or quasi-randomized controlled trials that evaluated the effectiveness of Ashi points stimulation for shoulder pain compared with conventional treatment. The methodological quality of the included studies was assessed using the Cochrane risk of bias tool. RevMan 5.0 was used for data synthesis. Results： Nine trials were included. Seven studies assessed the effectiveness of Ashi points stimulation on response rate compared with conventional acupuncture. Their results suggested significant effect in favour of Ashi points stimulation [odds ratio （OR）： 5.89, 95% confidence interval （CI）： 2.97 to 11.67, P〈0.01, heterogeneity： x 2=3.81, P=0.70, 12=0% ]. One trial compared Ashi points stimulation with drug therapy. The result showed there was a significantly greater recovery rate in group of Ashi points stimulation （OR： 9.58, 95% CI： 2.69 to 34.12）. One trial compared comprehensive treatment on the myofascial trigger points （MTrPs） with no treatment and the result was in favor of MTrPs. Conclusions： Ashi points stimulation might be superior to conventional acupuncture, drug therapy and no treatment for shoulder pain. However, due to the low methodological quality of included studies, a firm conclusion could not be reached until further studies of high quality are available.

Clinical Observation on the Post-stroke Shoulder Pain and Blood Viscosity Treated by Acupuncture-moxibustion Therapy

目的：探讨针灸治疗中风后偏瘫肩痛的临床疗效。方法：将90例中风后偏瘫肩痛患者按1：1：1随机分为3组。分别采用针灸、针灸加中药、中药进行治疗。结果：3组间疗效、全血黏度经统计学处理，针灸组、针灸加中药组与中药组相比具有显著性差异（P〈0．01）；而针灸组与针灸加中药组之间无显著性差异（P〉0．05）。结论：针灸治疗对中风后偏瘫肩痛具有良好疗效，对异常全血黏度有近期调节降低作用。

The Effects of Interferential Stimulation on Pain and Motion after Shoulder Surgery: A Prospective Randomized Study

Purpose: The purpose of this study is to determine the effects of interferential stimulation on pain and motion after shoulder surgery. Study Design: Randomized Controlled Trial. Methods: 102 patients undergoing arthroscopic rotator cuff repair or labral repair were prospectively randomized to receive either an interferential stimulation unit immediately after surgery (STIM) or not to receive the unit (NO-STIM). Each patient was measured for the range of motion (ROM) in forward flexion (FF), abduction (ABD), internal rotation (IR) and external rotation (ER). These measurements were taken prior to surgery and at the 6 weeks post-operative time point. Visual Analogue Scale (VAS) scores (0 - 10) and the amount of narcotic taken (standardized to 10 mg equivalents of hydrocodone) were measured and compared between the two groups at 2 days and 4 weeks post-operatively. 51 patients were excluded due to failure to document VAS scores and medication usage, lack of follow-up at the 6 weeks post-operative time point or hospitalization after surgery. This left 27 patients in the STIM group and 24 patients in the NO-STIM group. Results: No difference was found in the amount of narcotic taken after 2 days (STIM 14.37 ± 1.02, NO-STIM 15.88 ± 1.22, p = 0.34) or after 4 weeks (STIM 45.32 ± 4.36, NO-STIM 48.96 ± 5.50, p = 0.60). No difference in mean VAS scores were found at 2 days (STIM 5.56 ± 0.53, NO-STIM 4.63 ± 0.57, p = 0.24) or 4 weeks (STIM 1.68 ± 0.39, NO-STIM 1.38 ± 0.34, p = 0.57). At 6 weeks post-operatively, a difference was found in ER (STIM 62.5 ± 4.09, NO-STIM 50.4 ± 4.09, p = 0.04), and no differences found in FF (STIM 134.2 ± 5.29, NO-STIM 133.3 ± 4.85, p = 0.60), ABD (STIM 124.8 ± 6.22, NO-STIM 119.6 ± 5.42, p = 0.53) or IR (STIM 60.0 ± 3.69, NO-STIM 55.9 ± 3.03, p = 0.39). A post-hoc power analysis performed using an á = 0.05 revealed the study to be 90% powered to identify a difference of one narcotic equivalent between groups and 90% powered to identify a 0.3 difference in VAS scores. Conclusions: The use of an interferential stimulator in the immediate post-operative period had no effect on pain or narcotic usage following arthroscopic rotator cuff repair or labral repair. External rotation was significantly greater in the interferential stimulator group while no differences were found in other motion parameters.

肩部控制训练联合神经松动术对脑卒中偏瘫患者肩痛及上肢功能的效果

目的观察肩部控制训练基础上联合神经松动术治疗脑卒中偏瘫患者肩痛的效果。方法2020年1月至2021年11月,南通市第二人民医院脑卒中偏瘫患者43例,随机分为对照组(n=21)和治疗组(n=22)。对照组采用肩部控制训练,治疗组加用神经松动术。治疗前、治疗4周后,采用疼痛数字表法(NRS)和Fugl-Meyer评定量表上肢部分(FMA-UE)进行评定。结果对照组脱落1例,治疗组脱落2例。两组治疗后NRS和FMA-UE评分显著改善(|t|>7.898,P<0.001),且治疗组优于对照组(|t|>2.337,P<0.05)。结论肩部控制训练联合神经松动术能显著缓解脑卒中偏瘫患者的肩痛,改善其上肢运动功能。

热敏灸联合Maitland松动术治疗卒中后偏瘫肩痛临床观察

目的 探讨热敏灸联合Maitland松动术治疗卒中后偏瘫肩痛(HPS)疗效。方法 104例HSP患者来源2021年1月—2022年12月江西中医药大学附属医院,对照A组用热敏灸治疗、对照B组用Maitland术、观察组二法联合治疗,评价临床疗效、数字评定量表(NRS)、上肢Fugl-Meyer和Barthel指数。结果 3组治疗后NRS评分下降、Fugal-Meyer和Barthel指数上升,观察组较对照A组和B组变化明显,观察组有效率明显优于其他2组,差异有统计学意义(P<0.05)。结论 热敏灸联合Maitland术治疗卒中后HPS临床疗效显著,能有效缓解肩部疼痛和痉挛程度,有助于恢复肩关节功能,改善生活质量,对卒中后康复有指导意义。

小针刀联合关节腔注射玻璃酸钠治疗肩周炎患者的效果

目的:分析小针刀联合关节腔注射玻璃酸钠治疗肩周炎患者的效果。方法:选取2020年3月—2023年2月福建中医药大学附属第二人民医院收治的100例肩周炎患者。根据随机数表法将其分为研究组与参考组,各50例。参考组给予关节腔注射玻璃酸钠治疗,研究组在参考组基础上给予小针刀治疗。比较两组治疗前后肩关节功能、疼痛程度及临床疗效。结果:治疗后,研究组总有效率显著高于参考组,两组活动度、功能、肌力、症状评分均升高,研究组上述指标均高于参考组,研究组视觉模拟评分法(VAS)评分低于参考组,差异有统计学意义(P<0.05)。结论:小针刀联合关节腔注射玻璃酸钠治疗肩周炎患者可以有效减轻疼痛程度,改善肩关节功能。

超声引导下肩胛下肌联合胸大肌A型肉毒毒素注射改善偏瘫后肩痛

目的:探讨超声引导下肩胛下肌联合胸大肌A型肉毒毒素(BoNT-A)注射对偏瘫后肩痛的影响。方法:选取2023年2月至2024年1月在温州市中医院康复科住院确诊为脑梗死和脑出血的患者为研究对象,采用随机对照原则,将符合纳入标准的36例患者随机分成干预组和对照组,每组18例。干预组在超声引导下向肩胛下肌和胸大肌分别注射100 U(2 mL)的BoNT-A,共200 U(4 mL),对照组则使用等量的0.9%氯化钠溶液。观察治疗后2周、1个月、3个月和6个月偏瘫侧肩部的VAS、无痛被动关节活动范围(pROM)、肌张力(MAS)、上肢功能评分(FMA-UE)和日常生活活动能力评分(MBI)的变化,以及治疗后相关不良反应发生情况。结果:36例患者均顺利完成治疗。两组患者的基线值差异无统计学意义(P>0.05),干预组的VAS和MAS在治疗后2周开始低于对照组(P<0.05),pROM在治疗后1个月开始大于对照组(P<0.05),FMA-UE和MBI在治疗后各个时间点的两组间差异均无统计学意义(P>0.05)。结论:超声引导下肩胛下肌联合胸大肌BoNT-A注射可缓解偏瘫患者的肩痛,减少痉挛,改善肩关节活动度。

超声引导下曲安奈德注射联合微波治疗脑卒中后肩痛的效果

目的研究超声引导下曲安奈德注射联合微波治疗脑卒中后肩痛的效果。方法选取2020年10月至2021年8月新乡医学院第一附属医院收治的符合入选标准的56例脑卒中后肩痛患者,应用随机数字法分为A、B两组,每组28例,A组接受常规康复联合超声引导下曲安奈德注射治疗,B组接受常规康复、超声引导下曲安奈德注射及微波治疗。比较两组治疗前与治疗4周后的视觉模拟评分法(VAS)评分、Fugl-Meyer运动功能评定量表(FMA)上肢部分评分及肩关节前屈、外展、外旋被动活动度(PROM)的变化情况。结果治疗4周后,两组VAS评分较治疗前下降,肩关节前屈及外展PROM、FMA均较治疗前升高(P<0.05),B组VAS评分低于A组,肩关节前屈、外展PROM及FMA高于A组(P<0.05),两组治疗后肩关节外旋PROM差异无统计学意义(P>0.05)。结论超声引导下曲安奈德注射联合微波对于脑卒中后肩痛患者的治疗效果较好,能够改善患者上肢功能及日常生活能力。

右侧星状神经节阻滞对腹腔镜胆囊切除术后肩痛的影响

目的探讨右侧星状神经节阻滞(SGB)对腹腔镜胆囊切除术(LC)患者术后肩痛的影响。方法选择2022年4—8月行LC患者104例,男32例,女72例,年龄18~64岁,ASAⅠ或Ⅱ级。将患者随机分为两组:SGB组(S组,n=51)和对照组(C组,n=53)。气管插管后即刻,S组使用0.2%罗哌卡因4 ml进行超声引导下的右侧SGB;C组在相同部位注射生理盐水4 ml。记录术后48 h内腹腔镜术后肩痛(PLSP)例数和PLSP持续时间;记录术毕即刻(T_(1))、术后2 h(T_(2))、6 h(T_(3))、12 h(T_(4))、24 h(T_(5))、48 h(T_(6))PLSP的VAS疼痛评分,评估PLSP程度;记录PCIA泵有效按压次数、补救镇痛例数;记录恶心、呕吐、腹胀等不良反应的发生情况。结果S组PLSP发生率、PLSP持续时间>10 h比例明显低于C组(P<0.05)。T_(3)—T_(5)时S组PLSP程度明显轻于C组(P<0.05)。S组PCIA泵有效按压次数明显少于C组,补救镇痛率明显低于C组(P<0.05)。S组恶心发生率明显低于C组(P<0.05)。结论右侧星状神经节阻滞可以降低LC患者PLSP发生率,缓解PLSP疼痛程度,降低不良反应发生率。

微创经皮钢板内固定技术在锁骨中段粉碎性骨折锁定钢板固定术中应用

目的 探讨微创经皮钢板内固定(MIPPO)技术在锁骨中段粉碎性骨折锁定钢板固定术中的应用价值。方法 回顾性选取2020年6月—2022年6月130例锁骨中段粉碎性骨折的临床资料,根据手术方法分为观察组和对照组,每组65例。对照组行传统切开复位内固定,观察组行MIPPO技术联合锁定钢板治疗。比较2组围术期指标、并发症、手术优良率及手术前后疼痛应激介质、肩关节功能指标。结果 观察组切口长度、骨折愈合时间短于对照组,术中出血量少于对照组,术后1 d疼痛视觉模拟评分法评分低于对照组(P<0.01)。术后1 d,观察组血清P物质、前列腺素E_(2)低于对照组,β内啡肽高于对照组(P<0.05);术后3、6个月,观察组Constant-Murley肩关节功能评分及肩关节前屈、后伸、外旋活动度高于对照组(P<0.05)。观察组并发症总发生率低于对照组,术后6个月手术优良率高于对照组(P<0.05)。结论 MIPPO技术联合锁定钢板治疗锁骨中段粉碎性骨折能显著提高手术优良率,减少术中出血量,促进肩关节功能恢复,抑制疼痛因子释放,缓解术后早期疼痛,还能降低并发症风险。