Ventricular septal defect in infants and children with increased pulmonary vascular resistance and pulmonary hypertension - surgical management leaving an atrial level communication

To evaluate the surgical and medical efficacy of the patients operated for Ventricular Septal Defect [VSD] with Pulmonary Hypertension and Pulmonary Vascular Resistance [PVR]. Infants and children with elevated PVR and Pulmonary Hypertension are associated with significant mortality and morbidity after surgical closure. Circulatory assist devices and sophisticated medicines may not be available to help in the management of infants and children with elevated Pulmonary artery pressure and resistance. We left Patent Foramen Ovale [PFO] or made atrial communication to decrease the morbidity and mortality associated with the closure of large VSD in this risky group. Sixteen infants and children were operated with median age of 12 months, operated by the same surgeon [IU], from January' 2004 to December' 2005. They were with large VSD of elevated PVR [3.9+0.3] and underwent VSD closure leaving PFO or artificial ASD [5mm]. Surgical approach was through right atrium. Post operatively, all the patients were electively ventilated for 36 hours. They were given intravenous dilators [Glyceral Trinitrate + Phentolamine] and oral Sildenafil up to 1mg /Kg, six hourly. Five cases went into acute pulmonary hypertensive crisis postoperatively, and were rescued by Prostacycline Nebulization. Sixteen patients had VSD as the primary lesion that underwent operation. The overall early mortality was 6.25% [1/16]. There have been no late deaths. Closure of large VSD with elevated PVR can be performed, leaving PFO or artificial ASD, with acceptable mortality and morbidity

Role of carotid doppler in coronary artery disease

To find out the Intima media thickness [IMT] of carotid artery disease in coronary artery disease and to identify hemodynamically significant stenosis [i.e.>70%] in patients undergoing coronary artery bypass surgery. A descriptive study. The study was conduct at AFIC and MH Rawalpindi from 2003 to 2004. One hundred patients of triple, double and single vessel coronary artery disease were studied. There were 85 male and 15 female patients, ranging from 35 to 77 years. The patients were studied by Toshiba Ultrasound Machine equipped with high frequency linear transducers. In 10 patients having more that 70% ICA stenosis, conventional angiography was done. Intima-media thickness of common carotid artery was increased in 92 patients with mean value of 1.1 mm. Plaques were seen in 92 patients with commonest location at carotid bifurcation with extension into the origin of ICA. 15 patients has >70%, 10 patients > 50% stenosis and 67 patients in the range of 1-50% stenosis. 6 patients showed normal intima-media thickness with no evidence of plaque. In two patients ultrasound could not locate bifurcation of CCA. Doppler ultrasound showed 98% sensitivity in diagnosis of > 70% stenosis. Doppler ultrasound is a non-invasive imaging modality of choice in evaluation of extra-cranial carotid artery disease

Radial artery as a grafting surgery: Early experience at AFic / NIHD

The long-term patency of vein grafts in the coronary circulation has been poor. By contrast, the left internal thoracic artery [LITA] graft to left anterior descending coronary artery [LAD] has been associated with excellent patency and good clinical results. The revival of radial artery [RA] as a graft has offered another source of arterial conduit in addition to the use of right internal thoracic artery [RITA]. We evaluated our early experience with the use of RA as a conduit for coronary artery bypass grafting [CABG] surgery to establish its safety and efficacy. we studied 606 consecutive patients from January 2003 to December 2003 who underwent CABG surgery at our institute. Radial artery was used as a conduit 'in 214 patients. Data was collected prospectively. In the radial artery group, the age range was 27 - 72 years, mean age 49.5 years. 136 [64%] of the patients had diabetes, only 7 [3.27%] patients were females. 8 [3.73%] patients had left ventricular ejection fraction of less than 30%, 146 [68.22%] patients had EF of 30-45% and rest were with good left ventricular function. 23 [10.74%] patients were classified as unstable/urgent. The conduits included were 206 left internal thoracic arteries, 26 right internal thoracic arteries and 214 radial arteries and 170 were vein grafts. Average number of grafts per patient was 2.87. Top ends of the free arterial grafts as well as all the vein grafts were anastamosed directly to the ascending aorta. Patients were followed up to 6 weeks, 24 weeks and then 6 monthly thereafter. Complications included intra operative or post operative myocardial infarction in 6 [2.8%] patients, sternal wound infection in 4 [1.86%] patients, reoperation for excessive bleeding 17 [7.94%] patients. 14 [6%] patients required intra aortic balloon pump support, 46 [21%] required inotropic support. The incidence of hand complication was 7% [15 patients]. The overall mortality rate in radial artery group was not much different from the non-radial artery group of patients undergoing CABG surgery in our settings. Conclusions: Radial artery may be used as a conduit for coronary artery bypass grafting operation with confidence as regards its safety