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H C Koennecke

Publications and source records attributed to H C Koennecke.

25 records · Page 2Linked to original sources
PubMed1989

[Improvement in the diagnosis of scrotal diseases using color-coded duplex sonography].

Two hundred and twenty-two patients with abnormalities of their scrotal contents were examined with colour-coded duplex sonography. The aim of this prospective study was to evaluate this new procedure for the investigation of the scrotal organs. Differentiation between testicular torsion and inflammation by colour-coded duplex sonography achieved 95% accuracy. The diagnosis of varicoceles was simplified and expedited (accuracy = 99%). In other abnormalities of the scrotum, particularly testicular tumours, a knowledge of the blood flow did not provide any important additional diagnostic information compared with conventional sonography.

Acute Disease↗
PubMed1989

[Diagnosis of arterial vascular diseases of the lower extremities with color-coded duplex sonography].

Fifty-three patients with chronic arterial disease were examined with colour-coded duplex sonography and the results compared with those of arteriography. In those vessels where direct demonstration was possible, there was complete agreement regarding the localisations and severity of lesions. There was some difficulty in evaluating distal high-grade stenoses and occlusions. The results indicate that by means of colour-coded duplex sonography, rapid and accurate evaluation of the vessels in the lower extremities can be achieved. The new method represents a significant improvement in noninvasive diagnosis, particularly as compared with traditional duplex sonography.

Adult↗
PubMed1989

[Diagnosis of deep venous thrombosis of the leg using color-coded duplex sonography].

One hundred and twenty-nine lower limbs in 103 patients with suspected deep leg vein or pelvic vein thrombosis were examined by colour-coded duplex sonography and the results compared with phlebography. The deep veins could be demonstrated from the popliteal to the distal external iliac vein and internal structure and blood-flow could be evaluated. The procedure can diagnose not only occluding thrombus, but also thrombus with surrounding blood flow and post-thrombotic changes. Fresh venous thromboses can be recognised with a sensitivity of 96% and a specificity of 97%. Colour-coded duplex sonography is a simple, rapid and reliable method in all patients with suspected deep vein thrombosis. Our experience suggests that it can replace phlebography for the above-mentioned venous territories and problems.

Adult↗
PubMedDate not supplied

Frequency and determinants of microembolic signals on transcranial Doppler in unselected patients with acute carotid territory ischemia. A prospective study.

BACKGROUND AND PURPOSE: Few data exist regarding to the occurrence of microembolic high-intensity transient signals (HITS) on transcranial Doppler ultrasound (TCD) in unselected acute stroke patients. The aim of this study was to investigate prospectively the frequency and determinants of HITS in acute carotid territory ischemia. We hypothesized that carotid artery disease, cardiac abnormalities, and nonlacunar infarcts were independent predictors of HITS in acute stroke. METHODS: We investigated 145 consecutive patients with acute internal carotid artery territory ischemia. The median time interval between stroke and TCD examination was 2 days. TCD monitoring was performed for 30 min on each middle cerebral artery. The frequency of HITS was cross-classified with carotid artery status, potential cardiac sources of embolism, and nonlacunar infarct subtype. Multivariate logistic regression models determined the independent relationship of these variables to HITS. RESULTS: Microembolic signals were detected in 35 patients (24.1%), Ipsilateral carotid artery disease was significantly and independently associated with HITS (odds ratio 3.3, 95% confidence interval 1.4-7.8, p = 0.007), whereas potential cardiac sources (OR 1.07, 95% CI 0.48-2.4, p = 0.84) and infarct subtype (OR 0.84, 95% CI 0.29-2.4, p = 0.75) were not. CONCLUSIONS: High-intensity transient signals can be found in almost 25% of patients with acute anterior cerebral circulation ischemia and are significantly more prevalent among those with symptomatic carotid artery disease. Future clinical studies are required to determine whether HITS are a marker of increased stroke recurrence and can help to clarify stroke etiology in patients with competing stroke mechanisms.

Aged↗