Intraoperative collection of autologous platelet-rich plasma from the cardiopulmonary bypass circuit upon initiation of extracorporeal circulation.

OBJECTIVES: The aim of this study is to evaluate the possibility of the autologous platelet-rich plasma (PRP) collection from the cardiopulmonary bypass (CPB) circuit and to evaluate its effect on the aggregative function. METHODS: For seventy-two patients undergoing cardiac surgery with CPB, an autologous PRP was prepared using the Haemonetics Component Collection System® by drawing blood from the CPB circuit immediately after CPB was established. The blood samples were taken at three points for examination, A: beginning of surgery, B: immediately after heparin reversal with protamine following discontinuation of CPB, C: after the collected autologous PRP was returned to the patient. Platelet count and platelet aggregation ability were analyzed. RESULTS: The mean platelet count in autologous PRP was 5.5 (range: 3-14) units. Platelet count decreased by 115.0 (±27.3) × 1000/µl from A to B and increased by 27.3 ± 17.2 (× 1000/µl) from B to C. When platelet aggregation was measured by Adenosine Diphosphate (ADP) 3.0 µM, it decreased by 42.6% ± 12.1% from A to B and increased by 8.7% ± 7.4% from B to C. CONCLUSIONS: Autologous PRP can be safely collected by drawing blood from the CPB circuit, platelet count and aggregation ability significantly decreased after CPB including autologous PRP collection. Some improvement was detected in the number of the platelets count and platelet aggregation ability by administrating an autologous PRP even if autologous PRP is collected from CPB circuit. TRIAL REGISTRATION: UMI-CTR, UMIN000023776 . Registered 1 October 2016.

Treatment of ventricular septal perforation caused by blunt trauma using the right ventricle approach: A case report.

Traumatic ventricular septal perforation (VSP) is a rare condition that can occur following chest trauma and can lead to heart failure. Herein, a case of VSP caused by blunt chest trauma successfully closed using the double-patch technique via the right ventricle after medial sternotomy is presented. This case report highlights the necessity of emergency surgery in the acute phase of traumatic VSP if heart failure is difficult to control. This technique was useful for acute surgery. .

[Initial Clinical Experience of the Herbal Medicine Inchinkoto for Refractory Hyperbilirubinemia Following Open-heart Surgery].

We retrospectively assessed our initial clinical experience of the herbal medicine Inchinkoto for refractory hyperbilirubinemia following open-heart surgery. Six patients developed hyperbilirubinemia in an acute phase after surgery and their maximum total bilirubin levels were 6.4~26.4 mg/dl( mean:13.1± 8.2 mg/dl). They were initially treated with ursodeoxycholic acid and/or Stronger Neo-Minophagen C containing monoammonium glycyrrhizinate, glycine, aminoacetic acid, and L-cysteine hydrochloride hydrate. These treatments, however, were ineffective, and Inchinkoto was introduced at 5~34 day (mean:13.3±11.3 days) after surgery. Hyperbilirubinemia improved in all patients after the introduction of Inchinkoto:1 day after in 1 case, 2 days after in 2 cases, 3 days after in 2 cases, and 4 days after in 1 case. These results indicate the potential of Inchinkoto to attenuate refractory hyperbilirubinemia following cardiac surgery with cardiopulmonary bypass.

Long-Term Results of Obturator Bypass.

OBJECTIVE: We evaluated the long-term outcomes of obturator bypass. MATERIAL AND METHODS: A total of 16 patients (13 males and 3 females; 17 limbs) who underwent obturator bypass surgery at our department between April 1995 and March 2008 were included. RESULTS: Their ages ranged from 50 to 90 with a mean of 74 years. Inguinal infections observed in the 16 patients consisted of vascular graft infections in 13 patients, hemostatic device infections following endovascular therapy in two patients, and femoral artery infections following coronary angiography in one patient. The cumulative patency rate was 69% for 3 years and 43% for 5 years. The cumulative survival rate was 64% for 3 years and 55% for 5 years. CONCLUSION: Obturator bypass surgery was successfully performed with favorable results for arterial infections and vascular graft infections in the inguinal region.

Simple Interrupted Suturing for Redo Mitral Valve Replacement.

BACKGROUND: An evaluation was made of the early clinical outcomes and efficacies of simple interrupted suturing (SIS) for redo mitral valve replacement (MVR). METHODS: Among 336 mitral valve surgery patients at the authors' institution between April 2000 and May 2014, a total of 21 redo MVR using SIS (12 women, nine men; mean age 67±11 years; range 32-80 years) participated in the study. Surgical indications for redo MVR were paravalvular leakage (PVL) in 10 patients, prosthetic valve endocarditis in five, mechanical valve thrombosis in three, and structural valve deterioration (SVD) of the bioprosthesis in three. The number of previous surgeries was one in 10 patients, two in seven, and three in four. With regards to surgical technique, sharp dissection was initially performed on one side of the previous prosthetic sewing cuff, and the overall sewing cuff was thereafter completely removed following leaflet detachment. SIS (mean number of sutures 32.5 ± 3.0; range: 28-40 sutures) was performed to implant the new prosthesis, without exposing the rough surface of the previous mitral valve annulus, thereby allowing for eventual implantation of the same-sized or larger-sized prosthesis. RESULTS: The surgical procedure was successfully performed in all patients without any serious complications. Bioprostheses were selected for 11 patients, and mechanical valves for 10. Sixteen patients (76.2%) received a new prosthesis that was the same size as or larger than the previous prosthesis. Operative mortality within 30 days was 4.8%, which was similar to that of primary MVR in the same period (n = 83; 2.4%; p = 0.57). Recurrent PVL was detected in only one patient, who underwent a fourth surgery for SVD of the bioprosthesis. CONCLUSIONS: SIS for redo MVR may allow for the implantation of larger prostheses, and this novel maneuver may achieve acceptable early clinical outcomes.