Thomas W. Riggs

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A large intrapericardial tumor with pericardial effusion was diagnosed by ultrasound examination in a 32-week gestation fetus. Serial in utero examinations excluded fetal hydrops and normal labor ensued at 38 1/2 weeks. After delivery by Caesarian section, pericardiocentesis and subsequent successful surgery were performed. The tumor was found to be a(More)
Doppler echocardiograms of the tricuspid and mitral valves were recorded along with the electrocardiogram and respiration in 22 normal full-term neonates. A computer-interfaced digitizer pad was utilized to measure the following: peak E and A velocities (cm/s); E and A areas (the components of the total velocity-time integral in the early passive period of(More)
A functioning immune system and the process of antigen presentation in particular encompass events that occur at multiple length and time scales. Despite a wealth of information in the biological literature regarding each of these scales, no single representation synthesizing this information into a model of the overall immune response as it depends on(More)
In 1998, an outbreak of Campylobacter jejuni infections occurred in Kansas among persons attending a school luncheon; community cases were also reported. In a cohort study of luncheon attendees, 27 (17%) of 161 persons reported illness. Consuming gravy (relative risk [RR], 4.2; 95% confidence interval [CI], 1.5-11.7) or pineapple (RR, 2.4; 95% CI, 1.0-5.7)(More)
We studied 14 premature infants with the clinical diagnosis of peripheral pulmonic stenosis (PPS) and 15 normal full-term neonates by echocardiographic Doppler examinations. The PPS group had an average main pulmonary artery (PA) diameter similar to the control group (0.91 vs 0.96 cm, difference not significant), but had smaller branch PA diameters: right(More)
OBJECTIVES The main goal was to develop new z-score reference ranges for common fetal echocardiographic measurements from a large referral population. METHODS A retrospective cross-sectional study of 2735 fetuses was performed for standard biometry (biparietal diameter (BPD) and femoral diaphysis length (FDL)) and an assessment of menstrual age (MA).(More)
Doppler echocardiograms of the mitral valve were recorded along with electrocardiograms and respirations from 20 diabetics and 16 normal subjects, all aged 10 to 15 years. E and A areas (the components of the total velocity-time integral in the early passive period of ventricular filling [E] and the late active period of atrial emptying [A], respectively),(More)
BACKGROUND Complex ventral hernias remain a challenge. We present a study evaluating outcomes of complex ventral hernia repair using human-derived acellular dermal matrix (AlloDerm) and porcine-derived acellular dermal sheet (Permacol). METHODS A retrospective review of 251 patients undergoing complex hernia repair was performed. Primary outcome was(More)
PURPOSE Lymph node status is important in colorectal cancer. Multiple studies indicate a relationship between the number of nodes harvested and survival. This is important in patients with stage II disease where the role of adjuvant therapy is unclear. This study sought to analyze the impact of lymph node harvest on survival in patients with stage II(More)