Outcomes of emergency endovascular versus open repair for abdominal aortic aneurysm rupture

Purpose@#Ruptured abdominal aortic aneurysm (rAAA) is one of the most common aortic emergencies in vascular surgery and is associated with high operative mortality and morbidity rates despite recent treatment advances. We evaluated operative mortality risks for the outcomes of emergency endovascular aneurysm repair (eEVAR) vs. open repair in rAAA. @*Methods@#Twenty patients underwent eEVAR (n = 12) or open repair (n = 8) for rAAA between 2016 and 2020. We adopted the EVAR first strategy since 2018. Primary endpoints included in-hospital mortality and 1-year survival. The outcome variables were analyzed with Fisher exact, Mann-Whitney test, and linear by linear association. The Kaplan-Meier method was used to estimate survival. @*Results@#There were 13 males (65.0%) and the median age of the study cohort was 78.0 years (range, 49–88 years). Inhospital mortality occurred in 7 patients (35.0%); 5 (50.0%) in the early period and 2 (20.0%) in the later period of this series. According to the procedure type, 4 (50.0%) and 3 (25.0%) in-hospital mortalities occurred in the open repair and eEVAR patients, respectively. In 6 patients (50.0%), eEVAR was performed on unfavorable anatomy. The 1-year survival of eEVAR vs. open repair group was 75% ± 12.5% and 50% ± 17.7%, respectively. On univariate analysis, preoperative highrisk indices, postoperative acute renal failure requiring dialysis, pulmonary complications, and prolonged mechanical ventilation were associated with higher operative mortality. @*Conclusion@#The current data showed relatively superior outcomes with eEVAR vs. open repair for rAAA, even in some patients with unfavorable anatomy supporting the feasibility, efficacy, and safety of EVAR first strategy.

Outcomes of emergency endovascular versus open repair for abdominal aortic aneurysm rupture

Purpose@#Ruptured abdominal aortic aneurysm (rAAA) is one of the most common aortic emergencies in vascular surgery and is associated with high operative mortality and morbidity rates despite recent treatment advances. We evaluated operative mortality risks for the outcomes of emergency endovascular aneurysm repair (eEVAR) vs. open repair in rAAA. @*Methods@#Twenty patients underwent eEVAR (n = 12) or open repair (n = 8) for rAAA between 2016 and 2020. We adopted the EVAR first strategy since 2018. Primary endpoints included in-hospital mortality and 1-year survival. The outcome variables were analyzed with Fisher exact, Mann-Whitney test, and linear by linear association. The Kaplan-Meier method was used to estimate survival. @*Results@#There were 13 males (65.0%) and the median age of the study cohort was 78.0 years (range, 49–88 years). Inhospital mortality occurred in 7 patients (35.0%); 5 (50.0%) in the early period and 2 (20.0%) in the later period of this series. According to the procedure type, 4 (50.0%) and 3 (25.0%) in-hospital mortalities occurred in the open repair and eEVAR patients, respectively. In 6 patients (50.0%), eEVAR was performed on unfavorable anatomy. The 1-year survival of eEVAR vs. open repair group was 75% ± 12.5% and 50% ± 17.7%, respectively. On univariate analysis, preoperative highrisk indices, postoperative acute renal failure requiring dialysis, pulmonary complications, and prolonged mechanical ventilation were associated with higher operative mortality. @*Conclusion@#The current data showed relatively superior outcomes with eEVAR vs. open repair for rAAA, even in some patients with unfavorable anatomy supporting the feasibility, efficacy, and safety of EVAR first strategy.

The Successful Removal of a Foreign Body in the Spleen via Diaphragm Laceration Site by Video-Assisted Thoracoscopic Surgery

A 73-year-old man, who, in an inebriated state, had slipped in a f lowerbed and was wounded on the left f lank, was transferred to Trauma Center, Gil Medical Center, Gachon University College of Medicine. Based on the chest and abdominopelvic computed tomography, he was diagnosed with multiple rib fractures and hemopneumothorax on the left hemithorax and was found to have a bony fragment in the spleen. He had not presented peritonitis and exsanguinous symptoms during the observation period. Seven days later, computed tomography of the abdomen showed suspected diaphragmatic injury and a retained foreign body in the spleen. On exploration by video assisted thoracoc surgery (VATS), a herniated omentum through the lacerated site of the diaphragm was observed. After omentectomy using Endo Gia, the foreign body in the spleen was observed through the lacerated site of the diaphragm. Traumatic diaphragm rupture with a foreign body, in the spleen, was successfully managed by video assisted thoracic surgery via the lacerated site of the diaphragm.

Delayed Surgical Management of Traumatic Pseudoaneurysm of the Ascending Aorta in Multiple Trauma

Traumatic blunt aortic injury especially on proximal ascending aorta is a rare injury with a few reports. Generally emergency surgical management was performed. In this case, however, in multiple trauma with brain injury, emergency surgical management of aortic injury might result in unexpected secondary injury of the brain. Herein, we report a case of a 33-year-old man who was driving a truck was injured in a head-on collision. Evaluation revealed a pseudoaneurysm on his ascending aorta concomitant with epidural hemorrhage. He was treated by surgical management of his ascending aorta after 3 days from accident. There were no postoperative and neurologic complications and the patient was discharged after 18 days.

Upper Extremity Deep Vein Thrombosis after Clavicle Fracture and Immobilization

Upper extremity deep vein thrombosis (DVT) is an unusual condition compared to lower extremity DVT, and it represents about 10% of all DVTs. We report a case of upper extremity DVT after clavicle fracture and immobilization.

Acute Physiology and Chronic Health Evaluation II Score and Sequential Organ Failure Assessment Score as Predictors for Severe Trauma Patients in the Intensive Care Unit / 대한구급학회지

BACKGROUND: The Acute Physiology and Chronic Health Evaluation (APACHE) II scoring system and the Sequential Organ Failure Assessment (SOFA) scoring system are widely used for critically ill patients. We evaluated whether APACHE II score and SOFA score predict the outcome for trauma patients in the intensive care unit (ICU). METHODS: We retrospectively analyzed trauma patients admitted to the ICU in a single trauma center between January 2014 and December 2015. The APACHE II score was figured out based on the data acquired from the first 24 hours of admission; the SOFA score was evaluated based on the first 3 days in the ICU. A total of 241 patients were available for analysis. Injury Severity score, APACHE II score, and SOFA score were evaluated. RESULTS: The overall survival rate was 83.4%. The non-survival group had a significantly high APACHE II score (24.1 ± 8.1 vs. 12.3 ± 7.2, P < 0.001) and SOFA score (7.7 ± 1.7 vs. 4.3 ± 1.9, P < 0.001) at admission. SOFA score had the highest areas under the curve (0.904). During the first 3 days, SOFA score remained high in the non-survival group. In the non-survival group, cardiovascular system, neurological system, renal system, and coagulation system scores were significantly higher. CONCLUSIONS: In ICU trauma patients, both SOFA and APACHE II scores were good predictors of outcome, with the SOFA score being the most effective. In trauma ICU patients, the trauma scoring system should be complemented, recognizing that multi-organ failure is an important factor for mortality.

Acute Physiology and Chronic Health Evaluation II Score and Sequential Organ Failure Assessment Score as Predictors for Severe Trauma Patients in the Intensive Care Unit / 대한중환자의학회지

BACKGROUND: The Acute Physiology and Chronic Health Evaluation (APACHE) II scoring system and the Sequential Organ Failure Assessment (SOFA) scoring system are widely used for critically ill patients. We evaluated whether APACHE II score and SOFA score predict the outcome for trauma patients in the intensive care unit (ICU). METHODS: We retrospectively analyzed trauma patients admitted to the ICU in a single trauma center between January 2014 and December 2015. The APACHE II score was figured out based on the data acquired from the first 24 hours of admission; the SOFA score was evaluated based on the first 3 days in the ICU. A total of 241 patients were available for analysis. Injury Severity score, APACHE II score, and SOFA score were evaluated. RESULTS: The overall survival rate was 83.4%. The non-survival group had a significantly high APACHE II score (24.1 ± 8.1 vs. 12.3 ± 7.2, P < 0.001) and SOFA score (7.7 ± 1.7 vs. 4.3 ± 1.9, P < 0.001) at admission. SOFA score had the highest areas under the curve (0.904). During the first 3 days, SOFA score remained high in the non-survival group. In the non-survival group, cardiovascular system, neurological system, renal system, and coagulation system scores were significantly higher. CONCLUSIONS: In ICU trauma patients, both SOFA and APACHE II scores were good predictors of outcome, with the SOFA score being the most effective. In trauma ICU patients, the trauma scoring system should be complemented, recognizing that multi-organ failure is an important factor for mortality.

Surgical Planning by 3D Printing for Primary Cardiac Schwannoma Resection

We report herein a case of benign cardiac schwannoma in the interatrial septum. A 42-year-old woman was transferred from a clinic because of cardiomegaly as determined by chest X-ray. A transthoracic echocardiography and chest computed tomography examination revealed a huge mass in the pericardium compressing the right atrium, superior vena cava (SVC), left atrium, and superior pulmonary vein. To confirm that the tumor originated from either heart or mediastinum, cine magnetic resonance imaging was performed, but the result was not conclusive. To facilitate surgical planning, we used 3D printing. Using a printed heart model, we decided that tumor resection under cardiopulmonary bypass (CPB) through sternotomy would be technically feasible. At surgery, a huge tumor in the interatrial septum was confirmed. By incision on the atrial roof between the aorta and SVC, tumor enucleation was performed successfully under CPB. Pathology revealed benign schwannoma. The patient was discharged without complication. 3D printing of the heart and tumor was found to be helpful when deciding optimal surgical approach.

Successful Treatment in Fatal Adenovirus Pneumonia with the Use of Extracorporeal Membrane Oxygenation

Severe adenovirus pneumonia that causes acute respiratory failure can occur in infants, children, and immunocompromised patients. However, severe adenovirus pneumonia is rare in adults with a normal immune system. Adenovirus pneumonia may progress to acute respiratory failure in a few hours or a few days, and its clinical course cannot be predicted. In addition, the mortality rate is very high (range, 50% to 66%). However, the optimal treatment of adenovirus pneumonia has not been established. Herein, we report the successful treatment of acute respiratory failure due to adenovirus pneumonia with extracorporeal membrane oxygenation.

Students' Perceptions of Team-Based Learning by Individual Characteristics in a Medical School / 한국의학교육

PURPOSE: The purpose of this study was to examine medical students' perceptions of team-based learning (TBL) according to their individual characteristics: gender, team efficacy, interpersonal understanding, proactivity in problem solving, and academic ability. METHODS: Thirty-eight second-year medical students who took an integrated cardiology course participated in this study; 28 were male and 10 were female. A questionnaire on individual characteristics and a questionnaire on the perception of TBL were administered, and the scores of individual characteristics were grouped into three: high, middle, and low. The data were analyzed by t-test, analysis of variance, and multiple regression analysis. RESULTS: The TBL efficacy perception scale consisted of 3 factors: team skill, learning ability, and team learning. The group of male students and the group of students with high academic ability recognized the effect of TBL on improvements in learning ability more than females and those with low academic ability. The group of students with high team efficacy reported that TBL was effective with regard to team skill improvement. The group of students with high scores on interpersonal understanding and high proactive problem solving tended to perceive the TBL's effect on team skill improvement. Team efficacy and proactivity in problem solving had a positive effect on the perception of TBL. CONCLUSION: Medical students' perceptions of the effectiveness of TBL differ according to individual characteristics. The results of this study suggest that these individual characteristics should be considered in planning of team learning, such as TBL, to have a positive impact and stronger effects.

Early and Mid-term Changes of the Distal Aorta after Total Arch Replacement for Acute Type A Aortic Dissection

BACKGROUND: Total arch replacement (TAR) is being more widely performed due to recent advances in operative techniques and cerebral protective strategies. In this study, the authors reviewed the relationship between TAR and early- and mid-term changes of the false lumen after TAR in acute type A aortic dissection. MATERIALS AND METHODS: Twenty-six patients (aged, 54.7+/-13.3 years) who underwent TAR for acute type A dissection between June 2004 and February 2012 were reviewed. The relationship between the percentage change in the aortic diameter and the false lumen patency status was assessed by examining the early and late postoperative computed tomography imaging studies. RESULTS: There were two in-hospital mortalities, one late death, and three follow-up loses. The mean follow-up duration for the final 21 patients studied was 54+/-19.0 months (range, 20 to 82 months). The incidence of false lumen thrombosis within 2 weeks of surgery in the proximal, middle, and distal thoracic aorta, and the suprarenal and infrarenal abdominal aorta were 67%, 38%, 38%, 48%, and 33%, respectively, and 57%, 67%, 52%, 33%, and 33% for those examined at a mean of 49+/-18 months after surgery, respectively. The false lumen regressed in 11 patients (42.3%). The aortic diameters were larger in the patients with a patent false lumen than those with a thrombosed false lumen at all levels of the descending aorta (p<0.05). CONCLUSION: TAR and a more complete primary tear-resection can be accomplished with a relatively low-risk of morbidity and mortality. Enlargement of the distal aorta significantly correlated with the false lumen patency status.

Change of the Disposal and the Cancellation Ratio after Enforcement of a Precedent Antibody Screening Test / 대한수혈학회지

BACKGROUND: In the clinical setting, for convenience of transfusion, blood is requested in advance, even though 'the type and screen' method has been used for the efficient supply of blood. We employed the precedent antibody screening test method for all patients who were scheduled for surgery, and compared the disposal rate and the clear rate pre and post-activity. METHODS: We evaluated the disposal rate and the cancellation ratio before and after employment of the precedent antibody screening test method for all patients expected to undergo surgery. A comparison of the frequency and type of side effects of transfusion was also performed. RESULTS: The disposal rate and the cancellation ratio showed a decrease, from 1.48% to 1.29%, and from 17.0% to 11.0%. No significant change was observed in the cause of disposal and the side effects of transfusion. CONCLUSION: Enforcement of a precedent antibody screening test resulted in a decrease in the disposal and clear rates. In addition, it aided in reduction of the amount of work performed at the blood bank by establishing the proper utilization of blood and reducing unnecessary cross match testing. There appears to be no problem regarding the stability of transfusion. However, for the sample showing a positive result on the antibody screening test, an effort to decrease the side effects of transfusion, such as exhaustive cross-matching and increasing the rate of identification, would be needed.

Change of the Disposal and the Cancellation Ratio after Enforcement of a Precedent Antibody Screening Test / 대한수혈학회지

BACKGROUND: In the clinical setting, for convenience of transfusion, blood is requested in advance, even though 'the type and screen' method has been used for the efficient supply of blood. We employed the precedent antibody screening test method for all patients who were scheduled for surgery, and compared the disposal rate and the clear rate pre and post-activity. METHODS: We evaluated the disposal rate and the cancellation ratio before and after employment of the precedent antibody screening test method for all patients expected to undergo surgery. A comparison of the frequency and type of side effects of transfusion was also performed. RESULTS: The disposal rate and the cancellation ratio showed a decrease, from 1.48% to 1.29%, and from 17.0% to 11.0%. No significant change was observed in the cause of disposal and the side effects of transfusion. CONCLUSION: Enforcement of a precedent antibody screening test resulted in a decrease in the disposal and clear rates. In addition, it aided in reduction of the amount of work performed at the blood bank by establishing the proper utilization of blood and reducing unnecessary cross match testing. There appears to be no problem regarding the stability of transfusion. However, for the sample showing a positive result on the antibody screening test, an effort to decrease the side effects of transfusion, such as exhaustive cross-matching and increasing the rate of identification, would be needed.

Acute Type A Aortic Dissection Initially Diagnosed with Myocardial Infarction

No abstract available.

Diagnosis of Acute Aortic Dissection by the 2010 American Heart Association Guideline at Emergency Room: Analysis of a Delayed Diagnosis

PURPOSE: Acute aortic dissection is a rare and life-threatening disease, requiring an immediate evaluation and treatment. In 2010, the American College of Cardiology/American Heart Association suggested a new risk score system for the detection of an acute aortic dissection. This system was applied to our known patients with acute aortic dissection. METHODS: 155 patients with acute aortic dissection regardless of the types from January 2000 to June 2012 were examined. The known risk factors and 12 newly proposed risk factors were compared, based on the new guidelines, after dividing them into a delayed diagnosis group and early diagnosis group. The impact of the aortic dissection detection (ADD) risk score on the diagnostic process was assessed. RESULTS: The abrupt onset of pain was the most frequent symptom (65.2%) and only had an impact on an early diagnosis (p=0.021). 83 patients (53.5%) showed a widened mediastinum in the chest X-rays. The diagnosis was delayed in 21 patients (13.8%). According to the new guideline, 149(96.1%) were identified by 1 or more of the 12 clinical markers. 6(3.8%), 88(56.8%) and 61(39.3%) patients were classified as low, intermediate and high risk, respectively. Three of the 6 low risk patients showed mediastinal widening. CONCLUSION: The clinical risk markers and the ADD risk score system in the 2010 guidelines detected patients with high sensitivity. The new risk score system appears to be a valuable diagnostic index at the initial presentation.

Familiar Myxoma with a Positive Genetic Test: A case report / 대한흉부외과학회지

Ten percent of all myxomas are the familial form. Familial myxomas appear to have autosomal dominant transmission. We experienced two siblings with familial myxomas. A left atrial myxoma was surgically removed in a 21-year-old woman. Six years later, other myxomas were found in the right atrium and the left atrium and these were also surgically removed. Right ventricular and right atrial myxomas were surgically excised in her brother. The two siblings were found to have frame-shift mutations in the PRKAR1A gene (c.537delA; p.Gly180GlufsX26), which is the causative gene for Carney complex. Obtaining the genetic diagnosis makes it possible to prepare more effective therapeutic strategies for these patients and the gene carriers. Complete excision, ruling out multicentricity and proper postoperative follow up are all necessary to avoid recurrence of myxoma.

Mitral Valve Repair for Congenital Mitral Regurgitation in Children / 대한흉부외과학회지

BACKGROUND: Surgery for mitral valve disease in children carries both technical and clinical difficulties that are due to both the wide spectrum of morphologic abnormalities and the high incidence of associated cardiac anomalies. The purpose of this study is to assess the outcome of mitral valve surgery for treating congenital mitral regurgitation in children. MATERIAL AND METHOD: From 1997 to 2007, 22 children (mean age: 5.4 years) who had congenital mitral regurgitation underwent mitral valve repair. The median age of the patients was 5.4 years old and four patients (18%) were under 12 months of age. 15 patients (68%) had cardiac anomalies. There were 13 cases of ventricular septal defect, 1 case of atrial septal defect and 1 case of supravalvar aortic stenosis. The grade of the preoperative mitral valve regurgitation was II in 4 patients, III in 15 patients and IV in 3. The regurgitation was due to leaflet prolapse in 12 patients, annular dilatation in 4 patients and restrictive leaflet motion in 5 patients. The preoperative MV Z-value and the regurgitation grade were compared with those obtained at follow-up. RESULT: MV repair was possible in all the patients. 19 patients required reduction annuloplasty and 18 patients required valvuloplasty that included shortening of the chordae, papillary muscle splitting, artificial chordae insertion and cleft closure. There were no early or late deaths. The mitral valve regurgitation after surgery was improved in all patients (absent=10, grade I=5, II=5, III=2). MV repair resulted in reduction of the mitral valve Z-value (2.2+/-.1 vs. 0.7+/-.3, respectively, p<0.01). During the mid-term follow-up period of 3.68 years, reoperation was done in three patients (one with repair and two with replacement) and three patients showed mild progression of their mitral regurgitation. CONCLUSION: Our experience indicates that mitral valve repair in children with congenital mitral valve regurgitation is an effective and reliable surgical method with a low reoperation rate. A good postoperative outcome can be obtained by preoperatively recognizing the intrinsic mitral valve pathophysiology detected on echocardiography and with the well-designed, aggressive application of the various reconstruction techniques.

Surgical Complications in Heart Transplant Recipients: A Single Center Experience / 대한흉부외과학회지

BACKGROUND: As the patients who undergo heart transplantation have achieved better survival in recent years, a growing number of recipients are at a risk for experiencing surgical complications in addition to rejection and infection. In this paper, we report on our experience with the surgical complications that occurred in heart transplant recipients. MATERIAL AND METHOD: From April 1994 to September 2003, 37 heart transplantations were performed at our center by a single surgeon. The indications for transplantation were dilated cardiomyopathy, ischemic cardiomyopathy, valvular cardiomyopathy and familial hypertrophic cardiomyopathy. RESULT: Twenty postoperative complications required surgeries in 15 patients (41%). The types of operations required were; redo-sternotomy for bleeding (5), pericardiostomy for effusion (4), implantation of a permanent pacemaker (1), right lower lobe lobectomy for aspergilloma (1), removal of urinary stone (1), cholecystectomy for gall bladder stone (1), drainage of a perianal abscess (1), paranasal sinus drainage (1), total hip replacement (1), partial gingivectomy due to gingival hypertrophy (1), urethrostomy (1), herniated intervertebral disc operation (1) and total hysterectomy for myoma uteri (1). The locations of the complications were mediastinal in 10 (27%) cases and extramediastinal in 10 (27%) cases. CONCLUSION: The relatively high incidence of extrathoracic complications associated with heart transplantation emphasizes the importance of a multidisciplinary approach to the improve long-term survival when managing those complex patients.

Comparison of Outcomes after Curative Resection of Primary Lung Cancer between 50 Year or Younger and 70 Year or Older Patients / 대한흉부외과학회지

BACKGROUND: Previous series have suggested that younger patients with primary lung cancer exhibit a more aggressive disease course with a worse prognosis, as compared to older patients, although this issue is still debatable. MATERIAL AND METHOD: We reviewed the medical records of 79 patients (32 patients 50 years and younger (Group I) and 47 patients 70 years and older (Group II)) who underwent curative resection for primary lung cancer between July 2000 and June 2008. RESULT: The median age of the patients was 46.5 years in Group I and this was 73 years in Group II. The older patients were more likely to have major comorbidities (44% versus 77%, respectively; p=0.003). Histological examinations identified that the minor histological types (excluding non-small cell lung cancer (NSCLC)) were predominantly found in the Group I patients (16% versus 2%, respectively; p=0.037). For the TNM staging of the NSCLC, with excluding the minor histologic types, a higher proportion of patients had stage III disease in Group I (33% versus 13%, respectively; p=0.038). There was no significant difference in major morbidity (16% versus 30%, respectively; p=0.148) and operative mortality (0% versus 4.3%; p=0.512) between the groups. The mean follow-up interval was 33 months (range: 1~98 months) for patients in both groups. For the patients with NSCLC, the five-year overall survival rate was 52.3% for Group I and 53.7% for Group II (p=0.955). The rate of freedom from recurrence at five years was significantly lower for the Group I patients than for the Group II patients (39.4% versus 70.4%, respectively; p=0.027), and only being a member of Group I impacted recurrence, based on the Cox proportional hazard analysis (p=0.034). Of the patients who had recurrence, four patients in Group I underwent aggressive surgical treatment. All of these patients exhibited long-term survival (range: 46~87 months). CONCLUSION: In our study, the early outcome and long-term survival were similar for the younger and older patients after curative resection of primary lung cancer. However, we think that younger patients require meticulous follow-up as they had a tendency to proceed to surgery with advanced stage disease, a higher recurrence rate than did the older patients and the survival rates were improved, even for the recurred cases, with early aggressive treatment.

In Vitro Effects of Nitroglycerin, Nicardipine, Verapamil, and Papaverine on Rabbit Brachial and Celiac Arterial Tone / 대한흉부외과학회지

BACKGROUND: Vasoconstrictor-induced reduction in arterial graft diameter can cause significant flow deprivation. The aim of this study was to evaluate the effect of vasodilator pretreatment on vasoconstrictor-induced blood vessel spasm in vitro. MATERIAL AND METHOD: Rabbit brachial arteries (BA) and celiac arteries (CA) were cut into rings (3~4 mm) and suspended with a force displacement transducer (TSD 125C(R), Biopac Inc. USA) in a tissue bath filled with 5 mL modified Krebs solution bubbled with 5% CO2 and 95% O2 at 38degrees C. The rings were contracted with vasoconstrictors, and the developed tension changes were considered control values. The rings were then pretreated with 30micrometer nitroglycerin, nicardipine, verapamil, and papaverine, respectively, for 40 minutes and rinsed with the physiologic buffered salt solution three times every 15 min. The vasoconstrictor-induced tension changes after the previous procedure were considered experimental values. Data are expressed as the percentage tension induced by vasoconstrictors before and after pretreatment with vasodilators. RESULT: Nicardipine depressed vasoconstriction induced by norepinephrine, angiotensin II (AII), and U46619 in both the BA and the CA more significantly than did nitroglycerin (p<0.01) and verapamil (p<0.05). Verapamil depressed vasoconstriction induced by 5-hydroxytryptamine (5HT), AII, and U46619 in the BA and by 5HT in the CA more significantly than did nitroglycerin (p<0.01). CONCLUSION: These findings suggest that both nicardipine and verapamil effectively depressed vasoconstrictor action. Nicardipine is thought to be more effective than verapamil for the prevention of vasoconstrictor action.