Open Repair versus Endovascular Repair of Blunt Traumatic Thoracic Aortic Injuries : Short- and Mid-Term Outcomes / 日本心臓血管外科学会雑誌

Objective : The mainstream strategy for blunt traumatic thoracic aortic injuries (BTAI) has been shifting from conventional open repair (OR) to thoracic endovascular aortic repair (TEVAR). Accordingly, we reviewed the short- and mid-term outcomes following surgical procedures of BTAI, comparing OR with TEVAR. Methods : We retrospectively collected data of consecutive cases of BTAI in a single institution from March 2001 to August 2019. Results : Eighteen cases were identified. Of these, 7 patients (38.9%, mean age 62.0±15.2 years) were treated with OR and 11 (61.1%, mean age 61.8±21.3 years) were treated with TEVAR. There was significant reduction in the mean operative duration (OR 444±145 vs TEVAR 65±14 min ; p＜0.001), the mean intraoperative blood loss (OR 2,787±1,578 vs TEVAR 210±376 ml ; p＜0.001), the volume of blood transfusions (OR 5,042±2,219 vs TEVAR 929±751 ml ; p＜0.001), and the mean dose of heparin infusion (OR 20.3±4.1 vs TEVAR 7.9±8.5 ml ; p＜0.01). Postoperative 30-day mortality of OR and TEVAR were 28.6 and 0% (p＝0.14), respectively. There was no endoleak, 1 case of paraparesis, and 1 case of bilateral cerebellar infarction in the TEVAR group. There was no significant difference in the length of stay in the intensive care unit, the duration of hospital stay, the rate of home discharge, or the mid-term mortality and re-intervention rate (average follow-up period of 42.0±56.9 months). Conclusions : Compared with OR, TEVAR took less operative time with less bleeding, and required less blood transfusions and heparin. The short- and mid-term outcomes following TEVAR for BTAI was favorable and TEVAR appears to be applicable as a first-line treatment for BTAI.

Open versus laparoscopic repair of perforated duodenal ulcer: a comparative study

Background: Surgery is the mainstay of the treatment for perforated duodenal ulcer by closing the perforation with or without omental patch. There are no controversies in the surgical treatment of perforated duodenal ulcer but the best approach to surgery is still debatable. Advances in minimal access surgery has made it possible to close the perforated duodenal ulcer laparoscopically. The present study was conducted to compare the results of open and laparoscopic repair of perforated duodenal ulcer in terms of operative time, postoperative pain, hospital stay, and post-operative complications etc.Methods: The study was conducted in Dr. V. M. Government Medical College and Hospital located in Solapur (Maharashtra) from December 2008 to December 2010. It was a prospective comparative study. Patients were randomly divided into 2 groups alternately where group A and B were operated by conventional and laparoscopic techniques respectively and their outcomes were compared.Results: Most commonly affected age in this study was 51 to 60 years with male preponderance. Post-operative pain, analgesic requirement, wound infection, hospital stay, was significantly less in laparoscopic group as compared to open group (p<0.05).Conclusions: Laparoscopic repair of perforated duodenal ulcer is safe and feasible in properly selected patients and has superior results as compared to open surgery.

The risk factors of laparoscopic and open repair surgery of inguinal hernia in a tertiary care center

Background: The purpose of the present study to investigate the incidence of inguinal hernia and risk factors of laparoscopic and open repair surgery.Methods: The present study contained 3 bilateral,17 right-sided and 7 left-sided hernia in the laparoscopic group and 2 bilateral, 19 right-sided and 6 left-sided hernia in open repair group. A total of 54 patients had an inguinal hernia, 27 underwent open repair and 27 underwent laparoscopic to open repair.Results: The age group of patients of open repair is 51-60 years, whereas 41-50 years in laparoscopic repair. The mean age was 47 years in open repair against 43 years in the laparoscopic repair.Conclusions: Among them, eight patients from open repair (1-COPD, 3-asthma,1-hypertension, 3-smoking) and five patients with the laparoscopic repair (2- COPD, 2-asthma, 1-hypertension) had one of the above-mentioned risk factors.

Outcomes after Surgical Repair of Thoracoabdominal Aortic Aneurysm with Distal Aortic Dissection:DeBakey Type Ⅰ versus Type Ⅲ / 中国医学科学院学报

To evaluate the early and mid-term results after surgical repair of thoracoabdominal aortic aneurysm(TAAA)in patients with DeBakey typeⅠor Ⅲ aortic dissection. The clinical data of 130 patients who underwent TAAA repair for chronic DeBakey typeⅠ(groupⅠ, =47)or type Ⅲ(group Ⅲ, =83)aortic dissections in our center between January 2009 and December 2017 were retrospectively analyzed.Early postoperative results,midterm survival,and re-interventions were compared between these two groups. The 30-day mortality rate was 6.9%(=9)in the overall cohort,with no statistic difference between groupⅠand group Ⅲ(10.6% 4.8%;=0.803, =0.370).The incidence of major adverse events(38.3% 51.8%;=2.199, =0.138),5-year actuarial survival rate [(81.7±5.9)% (87.2±4.2)%;=0.483, =0.487],and 5-year actuarial freedom from all reinterventions [(84.5±6.7)% (85.5±4.8)%;=0.010, =0.920] showed no significant differences between these two groups. The early and mid-term outcomes after surgical repair of TAAA are similar for DeBakey typeⅠ and type Ⅲ patients.However,studies with larger sample sizes are still required.

Comparative Study between Open Repair and Laparoscopic Repair Incision Hernia

Incisional hernias mostly manifest after considerable delay following the initial surgery. The incidence of hernia development shows a linear curve. Thus, there is much more than the technique of wound closure that contributes to the formation of these hernias. Methods: Two comparative group were taken in this study .One was open repair group and another one laparoscopic repair group. In both study 76 cases were included. All cases were subjected under preoperative evaluation. Results: In this study found that open repair group 31.5% cases suffered from wound infection while in another group nobody were suffered from such type of wound infection. Conclusion: This study conclude that laparoscopic group patients can resume their work early. In comparison to open repair, laparoscopic approach has shown promising results and is being widely accepted.

Comparative Study of Clinical Outcome of Three Surgical Techniques in the Achilles Tendon Rupture: Open Repair, Percutaneous Repair, and Minimal Incision Repair by Achillon / 대한족부족관절학회지

PURPOSE: This study compared the clinical outcomes of open repair, percutaneous repair, and minimal incision repair by Achillon in ruptured Achilles tendon. MATERIALS AND METHODS: The outcomes of 12 patients with open repair (group 1), 8 patients with percutaneous repair (group 2), and 10 patients with minimal incision repair by Achillon (group 3) from February 2013 to March 2016 were analyzed retrospectively. The postoperative clinical evaluations were done by the American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot score, Arner-Linholm scale, mid-calf circumference difference, one-leg heel raise difference, visual analogue scale (VAS) for postoperative scarring, time to return to work, and complications. RESULTS: No significant difference in the AOFAS ankle-hindfoot score, Arner-Linholm scale, and time to return to work was observed among three groups (p=0.968, 0.509, and 0.585). The mean differences in the mid-calf circumference in groups 1, 2, and 3 were 1.09, 0.73, and 0.58, respectively; groups 2 and 3 were significantly higher than group 1 (p=0.002). In addition, the mean VAS scores for postoperative scarring in groups 1, 2, and 3 were 7.0, 9.1, and 9.1, respectively; groups 2 and 3 were significantly higher than group 1 (p=0.001). The mean differences in one-leg heel raising in groups 1, 2, and 3 were 2.03, 1.91, and 1.33, respectively; group 3 was significantly higher than groups 1 and 2 (p=0.010). The complications encountered were one case of deep infection in group 1 and one case of sural nerve hypoesthesia in group 2. CONCLUSION: Minimal incision repair by Achillon is recommended as an effective surgical treatment for Achilles tendon rupture because it minimizes the risk of complications, leads to an improved tendon strength and healing, and achieves cosmetic satisfaction.

A Comparative Study of Surgical Treatment Result in the Ruptured Achilles Tendon: Minimal Incision Percutaneous Repair and Open Repair / 대한정형외과학회잡지

PURPOSE: To compare and analyse the clinical outcomes between minimal-incision percutaneous repair and open repair among the surgical treatments for Achilles tendon ruptures. MATERIALS AND METHODS: We retrospectively analyzed and compared the outcomes between 25 patients with minimal incision percutaneous repair (group 1) and 30 patients with open repair (group 2), from January 2006 to June 2014. The postoperative clinical evaluations were done by Arner-Lindholm scale, American Orthopedic Foot and Ankle Society (AOFAS) ankle-hindfoot score, overall patient's satisfaction, and cosmetic satisfaction of scar. RESULTS: There were statistically significant differences between the two groups with respect to AOFAS hind foot score, mid-calf circumference differences, overall patient's satisfaction, and satisfaction of scar; the group 1 showed better achievement. There was no statistical difference between two groups in regards to other clinical outcomes. In group 1, there were 2 cases of sural nerve hypoesthesia, which fully recovered spontaneously at about 6 months after the surgery. In group 2, there were 3 cases of deep vein thrombosis, re-rupture, and deep infection. CONCLUSION: We recommend minimal incision percutaneous repair as one of the effective surgical treatment options for Achilles tendon ruptures.

Síndrome compartimental abdominal en el contexto de ruptura de aorta abdominal: posibles factores de manejo terapéutico que aumenten incidencia de este síndrome / Abdominal compartment syndrome in the context of ruptured abdominal aorta: possible therapeutic management factors that increase incidence of this syndrome

El síndrome compartimental abdominal (SCA) es cuando la presión intaabdominal (PIA) es sostenida mayor a 20 mmHg asociada con nuevo fallo/disfunción de órganos. Este síndrome se puede presentar por causas primarias abdomino-pélvicas o causas secundarias. Una de las causas primarias es la presencia de aneurisma de aorta abdominal, su ruptura y complicaciones como hematomas retroperitoneales. Se ha discutido sobre la ventaja de realizar reparación endovascular (RE) en el contexto de ruptura de aneurisma de aorta abdominal (RAAA) versus la tradicional reparación por cirugía abierta (CA), tanto en reducción de mortalidad como de complicaciones postquirúrgicas. En cuanto a causas secundarias, estas están relacionadas con el manejo perioperatorio del paciente con RAAA. Se ha evidenciado que una correcta monitorización y manejo del paciente en el pre, trans y postoperatorio, indistintamente de la técnica quirúrgica empleada, tiene mayor incidencia en la disminución de SCA.

Abdominal compartment syndrome (ACS) happens when the intra-abdominal pressure maintains above 20 mmHg with new organ failure. This syndrome has primary abdominal pelvic causes or secondary causes. One of the primary etiologies can be the presence of an abdominal aorta aneurysm, its rupture and complications such as retroperitoneal hematoma. It has been discussed about the advantage of endovascular repair (EVAR) in patients with rupture of abdominal aorta aneurysm (RAAA) vs open repair (OR), reducing mortality and complications after surgery. About de secondary etiologies of ACS, these have been linked with perioperative treatment of patients with RAAA. It has been stablished that the right monitoring and treatment of the patient in the pre, trans and postoperative time, regardless of the surgery technique, has a better influence diminishing the incidence of SCA.

Thoracic aorta aneurysm open repair in heart transplant recipient; the anesthesiologist’s perspective.

Many years following transplantation, heart transplant recipients may require noncardiac major surgeries. Anesthesia in such patients may be challenging due to physiological and pharmacological problems regarding allograft denervation and difficult immunosuppressive management. Massive hemorrhage, hypoperfusion, renal, respiratory failure, and infections are some of the most frequent complications related to thoracic aorta aneurysm repair. Understanding how to optimize hemodynamic and infectious risks may have a substantial impact on the outcome. This case report aims at discussing risk stratification and anesthetic management of a 54‑year‑old heart transplant female recipient, affected by Marfan syndrome, undergoing thoracic aorta aneurysm repair.

Comparacion entre la cirugia abierta y el metodo minimamente invasivo para roturas agudas del tendon de aquiles / Comparison between open surgery and the minimally invasive method for acute achilles tendon ruptures

Introducción: La reparación quirúrgica puede realizarse mediante cirugía abierta o por técnicas mínimamente invasivas. La técnica percutánea combina las ventajas del tratamiento quirúrgico abierto con el tratamiento ortopédico. El objetivo de este trabajo es comparar la técnica mínimamente invasiva de Dresden descrita por Amlang con la cirugía abierta convencional. Materiales y Métodos: Entre marzo de 2010 y septiembre de 2013, 45 pacientes fueron operados, 15 casos con técnica abierta convencional y 15 casos con la técnica percutánea de Dresden. Se dividió a los pacientes en dos grupos según el método quirúrgico utilizado y, luego, se analizaron comparativamente los resultados. El criterio de elección del método quirúrgico fue al azar, siempre que se realizara dentro de los siete días de la rotura. Resultados: Se mencionan los resultados comparativos del tiempo quirúrgico, el trofismo, la longitud de la cicatriz, la diferencia comparativa en el perímetro del gemelo. El puntaje de la AOFAS a los 5 meses fue 90 para el grupo A y 95 para el grupo B. Tiempo promedio de retorno a la actividad laboral: grupo A, 7 meses; grupo B, 3.53 meses. Media del retorno a la actividad deportiva: grupo A, 12.22 meses; grupo B, 6.53 meses. Conclusiones: La reparación percutánea de Dresden es una buena opción para las roturas del tendón de Aquiles; la evolución clínico-funcional es buena y se minimizan los riesgos de otra rotura y lesiones del nervio sural.

Introduction: Surgical repair can be performed by open or minimally invasive surgery techniques. The percutaneous technique combines the advantages of the open treatment with orthopedic surgery. The aim of this study is to compare minimally invasive Dresden technique described by Amlang with conventional open surgery. Methods: Between March 2010 and September 2013, 45 patients were surgically treated using conventional open surgery (15 cases) or percutaneous Dresden technique (15 cases). Patients were divided into two groups according to the surgical method used and then the results were comparatively analyzed. Surgical method was selected at random, provided that it was performed within 7 days after rupture. Results: Comparative results of surgical time, muscle trophism, length of scar, and comparative difference in the twin perimeter calf are reported. AOFAS score at 5 months: 90 in group A and 95 in group B. Average time to return to work: group A, 7 months; group B, 3.53 months. Mean time to return to sport activity: group A, 12.22 months; group B, 6.53 months. Conclusions: Dresden technique is a good option for Achilles tendon ruptures; with good clinical and functional outcome minimizing the risk of rupture and sural nerve injury.

Treatment of Massive Defect in Achilles Tendon with Tendon Allograft: A Case Report / 대한족부족관절학회지

Deep infection of Achilles tendon is one of the serious complications that occur after open repair of the tendon. It sometimes leads to a very large tendon defect during the course of treatment. We report on a case of massive defect in Achilles tendon, which was successfully treated with Achilles tendon allograft and flexor hallucis longus tendon transfer.

Open Repair of Triangular Fibrocartilage Complex Type 1B Tear

Most common traumatic type 1B tear of triangular fibrocartilage complex (TFCC), according to the Palmer's classification, may lead to the loss of the stability of distal radioulnar joint and is known to be one cause of the persisted ular side wrist pain. Recently as the knowledge of the anatomical structures of the TFCC accumulates and the deep fiber of the distal radioulnar ligament is recognized to play a central role, an attempt to repair it to the original ulnar fovea insertion site has been done and reported successful results. Since the introduction of open technique, numerous arthroscopic technique has been developing. Here careful considerations ought to be given during open repair will be taken with review of the related articles.

Minimally invasive surgery in infants with congenital diaphragmatic hernia: outcome and selection criteria / 대한외과학회지

PURPOSE: The aim of the study was to determine clinical indications for performing minimally invasive surgery (MIS) with acceptable results by reviewing our experience in congenital diaphragmatic hernia (CDH) repair and comparing outcomes of MIS with open surgery. METHODS: Medical records of patients who underwent CDH repair were reviewed retrospectively between January 2008 and December 2012, and outcomes were compared between MIS and open repair of CDH. RESULTS: From 2008 to 2012, 35 patients were operated on for CDH. Among these patients, 20 patients underwent open surgery, and 15 patients underwent MIS. Patients with delayed presentations (60.0% [9/15] in the MIS group vs. 20.0% [4/20] in the open surgery group; P = 0.015) and small diaphragmatic defect less than 3 cm (80.0% [12/15] in the MIS group vs. 0.0% [0/20] in the open surgery group; P < 0.001) were more frequently in the MIS group than the open surgery group. All 10 patients who also had other anomalies underwent open surgery (P = 0.002). Moreover, nine patients who needed a patch for repair underwent open surgery (P = 0.003). Patients in the MIS group showed earlier enteral feeding and shorter hospital stays. There was no recurrence in either group. CONCLUSION: CDH repair with MIS can be suggested as the treatment of choice for patients with a small sized diaphragmatic defect, in neonates with stable hemodynamics and without additional anomalies, or in infants with delayed presen tation of CDH, resulting in excellent outcomes.

Surgical Treatment of Achilles Tendon Rupture with Absorbable Suture Materials Only / 대한족부족관절학회지

PURPOSE: To report the clinical results from using absorbable suture materials instead of nonabsorbable materials which have been used more commonly to repair Achilles tendon. MATERIALS AND METHODS: We retrospectively reviewed 21 cases of acute Achilles tendon rupture, treated surgically from 2004 to 2011. Mean follow-up period is 6 months. We repaired Achilles tendon using size 1 Vicryl (Polyglactin 910, Ethicon) for core suture and size 3-0 Vicryl for epitendinous suture. At three months after surgery, we evaluated clinical results with single heel raise height by centimeters, differences of calf circumference and passive range of motion of ankle joint, compared to contralateral side. Also we recorded clinical results with subjective satisfaction grades. RESULTS: At three months after surgery, 20 of 21 patients were able to perform single heel raise over 5 cm in height. Calf circumference differences were less than 1 cm in 12 cases, between 1 cm to 3 cm in 5 cases, more than 3 cm in 4 cases. There was no difference in range of passive motion in 19 cases. All patients satisfied with daily activity except 2 cases with mild discomfort. There was no complication such as rerupture, elongation or infection. CONCLUSION: We experienced excellent clinical results from repairing Achilles tendon with using absorbable suture materials in terms of functional outcomes and patient's satisfaction without any complication. So we may consider using absorbable suture materials instead of nonabsorbable materials to repair Achilles tendon.

A Comparative Study of Surgical Treatment in the Ruptured Achilles Tendon: Minimal incision and Open repair / 대한족부족관절학회지

PURPOSE: The purpose of this study was to compare and analyse the clinical outcomes of minimal incision repair and open repair in ruptured Achilles tendon. MATERIALS AND METHODS: We retrospectively analyzed the outcomes of 10 patients with minimal incision repair (group 1) and 19 patients with open repair (group 2) from February 2007 to June 2011. The postoperative clinical evaluations were done by Arner-Lindholm scale, AOFAS score, overall patient's satisfaction and cosmetic satisfaction of scar. RESULTS: There was no statistical difference between two groups in Arner-Lindholm scale, AOFAS score, overall patient's satisfaction (p=1.21, 0.87, 1.07). There was statistically high rate of cosmetic satisfaction in group 1(p<0.001). There were no complications in group 1. Complications occurred in three patients (deep infection, rerupture, deep vein thrombosis) of group 2. CONCLUSION: Treatment of minimal incision repair in Achilles's tendon ruptures showed high rate of cosmetic satisfaction and low rate of complication's, but there were no significant differences with open repair in other clinical outcomes. The minimal incision repair could be recommended as one of the effective treatment for the Achilles's tendon ruptures.

Open Repair of Acute Tibial Avulsion Injury of Posterior Cruciate Ligament: Clinical Outcomes and Usefulness of Preoperative 3-D CT / 대한정형외과학회잡지

PURPOSE: To evaluate the clinical outcome of open repair of acute tibial posterior cruciate ligament (PCL) tibial avulsion injury using the posteromedial approach, and to examine the usefulness of pre-operative 3D-computed tomography (CT) imaging. MATERIALS AND METHODS: From July 2004 onwards, among the 33 patients with acute tibial avulsion injury of the PCL, 22 patients were available for a 1-year follow-up. Patients underwent internal fixation using screws, pullout sutures or staples through the posteromedial approach. Clinical evaluations were performed using the posterior drawer test, posterior drawer stress x-ray, range of motion and Tegner score. In addition, size of the fragment, visibility, comminution, displacement and presence of extension were studied and were compared to the pre-operative X-ray and 3D-CT imaging. RESULTS: Four cases demonstrated 10-degree restriction in flexion and 1 case demonstrated 10-degree restriction in extension compared to the unaffected side. Except for the 2 cases which had Grade I posterior instability on the posterior drawer test, the results of the post-operative joint stability were negative and the posterior drawer stress X-ray using the Telos device showed an average of 0.57+/-0.4 mm. Like the average pre-operative Tegner score of 6.7+/-0.9, the Tegner score was restored to 6.2+/-0.7 (p>0.05) at the last follow-up. 3D-CT showed an improved accuracy in visibility (55.6%), comminution (50%) and displacement (44.4%) compared to the simple X-ray. CONCLUSION: The acute tibial avulsion injury treated with the appropriate internal fixation through the posteromedial approach based on the fracture size demonstrated exellent outcomes. The pre-operative 3D-CT was useful for identifying the fracture pattern and choosing the appropriate internal fixation.

Surgical Treatment of the Ruptured Achilles Tendon: A Comparative Study between Percutaneous and Open Repair / 대한족부족관절학회지

PURPOSE: The purpose of the present study was to compare and analyze the clinical outcomes of the percutaneous and open repair of acute Achilles tendon ruptures. MATERIALS AND METHODS: We performed a retrospective study on 24 patients (group 1) managed with percutaneous repair, and 21 patients (group 2) managed with open repair for acute Achilles tendon rupture. The postoperative evaluations were done by an Arner-Lindholm scale and AOFAS score. Postoperative overall satisfaction and cosmetic satisfaction were also evaluated. RESULTS: By Arner-Lindholm scale and AOFAS score, there was no difference between two groups (p<0.05). As for postoperative overall satisfaction, 5 cases were very satisfied, 16 cases were satisfied and 3 cases were fair in group 1. In group 2, 12 cases were very satisfied, 9 cases were satisfied. For postoperative cosmetic satisfaction, 13 cases were satisfied, 11 cases were fair in group 1. In group 2, 9 cases were very satisfied, 12 cases satisfied. In open repair group, a case of deep wound infection and three cases of skin necrosis were reported as complication. 2 cases of sural nerve injury were seen in percutaneous repair group and were recovered within 3 months. CONCLUSION: Percutaneous repair of acute Achilles tendon ruptures have high level of cosmetic satisfaction compared with open repair without any significant difference in clinical outcomes.

The Radiologic and Clinical Changes after Open Complete Repair of Massive Rotator Cuff Tears

PURPOSE: This study evaluated the preoperative and postoperative radiologic findings of patients with complete repairs after massive rotator cuff tears along with the incidence of re-tear and the clinical outcomes. MATERIALS AND METHODS: This study evaluated 33 cases who had open complete repairs for massive rotator cuff tears and these patients were followed up for more than 24 months. The clinical evaluation was performed according to the shoulder joint function test of the American Shoulder and Elbow Surgeons (ASES), and the degree of arthritis related to the massive rotator cuff tears was evaluated using the Hamada classification. RESULTS: The ASES scores improved from 37.6 preoperatively to 85.6 postoperatively. The mean preoperative acromio-humeral interval (AHI) score was 6.5 mm, which increased to 9.3 mm immediately after surgery, and there was a decreased to 6.5 mm noted at the last follow up. The lower radiology stages of arthritis according to the classification showed better preoperative and postoperative results. CONCLUSION: An open complete repair as the surgical treatment for a massive rotator cuff tear showed satisfactory results for pain relief and an improvement in the shoulder joint function though re-tear after surgery.

Delayed Open Repair for Persistent Type I Endoleak after EVAR: A Case Report

Endovascular aneurysm repair (EVAR) is used with increasing frequency in the management of high-risk abdominal aortic aneurysm (AAA) patients. We report a delayed open repair for a persistent type I endoleak after EVAR in a patient with co-morbidities. An infrarenal AAA with a transverse diameter of 9.86 cm was detected on CT angiography; it extended from 8 mm below the renal artery to both common iliac arteries. The infrarenal angle was 90 degrees. After insertion of a Zenith stent graft (COOK, USA), a type I endoleak was detected on aortography, and several balloon dilatations were performed. The procedure was finished with a sustained type I endoleak. The endoleak persisted after 5 days on Doppler ultrasound, so open repair was performed. Total operative time was 240 minutes, and the duration of supra-celiac aorta clamping was approximately 35 minutes. The patient suffered an acute myocardial infarction on postoperative day 7 and recovered with conservative management. The patient was discharged on postoperative day 29.