Value of ultrasound-guided aspiration of hip arthroplasties performed in an orthopedic clinic by orthopedic surgeons.

: Total joint arthroplasties continue to increase as do periprosthetic joint infections (PJIs). Ultrasound-guided aspiration can yield useful synovial fluid for analysis while avoiding radiation exposure. This study presents a high-yield, ultrasound-guided technique with analysis of aspiration results.

The effect of tourniquet use on postoperative strength recovery after arthroscopic meniscectomy.

The purpose of this prospective study was to determine the effect of pneumatic tourniquet use during arthroscopic meniscectomy on postoperative recovery of quadriceps and hamstring strength. Thirty-four patients with no ligamentous instability underwent arthroscopic meniscectomy after random assignment to the tourniquet or no tourniquet group. Tourniquet pressure was determined with a nomogram that considered thigh circumference and systolic blood pressure at time of induction.

[Coronary vessel anomalies in adults--harmless variation or changes with clinical significance].

A review of 1097 consecutive coronary angiograms performed for evaluation of angina pectoris or valvular dysfunctions showed 3 patients with arteriovenous fistulas (0.25%), 6 patients with malpositions (0.55%), 29 patients with aneurysms (2.

Heterotopic bone in hip arthroplasties. Cemented versus noncemented.

Sixty-six hip arthroplasties in 55 patients were reviewed to specifically study cemented versus noncemented procedures, as related to heterotopic bone formation (HBF). Other factors considered included the type of arthroplasty, surgical approaches, preoperative and postoperative medicines, preoperative predisposing diagnoses, range of motion, and pain. The overall percentage of heterotopic ossification was 64%.

[Densitometry determination of coronary flow rates using digital subtraction angiography (DSA). Methods, multiple examinations and interobserver comparison].

In invasive diagnostics of coronary heart disease (CHD), three each DSA examinations of the left coronary artery were performed at 2-minute intervals in ten patients subsequent to conventional examination by means of a left-side cardiac catheter and coronary angiography. While placing the patient in left anterior oblique (60 degrees) position, 6 ml each of ionic contrast medium were injected mechanically with a flow of 4 ml/sec at a pacemaker-induced heart rate of 100/min. Examinations were performed according to a standard mode and were evaluated via the image analysing computer APU of the Philips DVI-DSA system.

[Acute and long-term effects of pimobendan (UD-CG 115) in NYHA II and III heart failure. Results of a randomized multicenter double-blind study].

The effects of pimobendan (UD-CG 115) on hemodynamics and exercise capacity after acute (single dose) and chronic (6 month) oral treatment, as well as acute treatment after 6 months were investigated in 67 patients with chronic heart failure of NYHA classes II or III, which had persisted in spite of treatment with diuretics and digitalis. They were treated with pimobendan (2.5 mg bid or 5 mg) or placebo in a randomized, double-blind multicenter trial.

[A densitometric method for the assessment of myocardial perfusion using digital subtraction angiography].

The aim of the method presented is the quantitative description of the perfusion of the myocardium. In the framework of the invasive diagnostics of the coronary heart disease with catheterization of the left heart, ventriculography and coronarography in Seldinger's technique in 50 patients (35 of them well to be evaluated) subsequently DSA-investigations of the left coronary artery (LCA) were performed by means of the DVI-2 CV system (Philips) and densitometrically evaluated with the help of the analytic processing unit (APU). In injection by hand of 4 and 6 ml, respectively, visotrast 370 in each case 10-15 DSA-pictures in LAO 60 degrees-projection were possible.

[Postoperative supraventricular arrhythmias in atrial septal defects].

Before operation as well as over a mean postoperative period of 8.9 years 222 adults with atrial septal defects underwent a follow-up examination concerning frequency and clinical significance of supraventricular dysrhythmias. Thereby disturbances of the formation of stimuli were found before the operative procedure in 60 patients and after the correction in 115 patients.

[Venous digital subtraction angiography of the left ventricle in comparison with conventional angiography].

In 42 patients with coronary heart disease within a left heart catheterization by means of coronarography and conventional angiocardiography in each case before and after GTN digital subtraction angiographies of the left ventricle were performed with central venous injection of 20 ml visotrast with a flow of 16-18 ml/s. A DVI2-CV system of the firm Philips served as investigation device. In general between the angiocardiography and the digital subtraction angiographies the following results were obtained for EF 0.

[In vivo effects of high density lipoprotein rich serum fractions (HDLF) in the human. 2. Effect of repeated HDLF infusions on atherogenic risk factors and arteriosclerotic vascular changes in patients with and without hyperlipoproteinemia].

10 patients with hyperlipoproteinaemia and 4 normolipaemic smokers with angiographically proved arteriosclerosis of different degrees of severity were infused in 2-week intervals 100 ml HDL-rich Cohn-IV-1 fractions each. After the infusion for 5 days essential phospholipids were injected and a permanent medication with cholestyramin and a choleretic drug were prescribed. In the patients with HLP increases of concentration, decreases of concentration, constancy of the plasma lipids and apoproteins independent of the phaenotype of the HLP as well as an improvement of the state of the antioxidant state were observed.

[Hyperthyroidism and its relation to heart function].

The influence of hyperthyreosis on the cardiac function was investigated by means of non-invasive methods (radiocardiography, echocardiography, Tc-99m- und Tl-201-scintigraphy of the myocardium) and invasive methods (coronary angiography). Independent of age an increase of the frequency was always existing, a significant increase of the filling of the ventricle, of SI and HI was shown only by younger patients. With the help of the echocardiography local and global disturbances of kinetics, by means of the Tl-201-scintigraphy of the myocardium disturbances of the myocardial perfusion could be proved.

[Assessment of causality in fatal incidents in relation to coronary angiography].

Among 2,353 coronary angiographies (from 1.10.1984 until 30.

[Determination of global left ventricular functional parameters with intraventricular digital subtraction angiography in coronary disease].

Left heart catheterisation, coronarography and conventional angiocardiography of the left ventricle (ACG) [30 degrees right anterior oblique; 45 ml contrast medium (Visotrast) with a flow of 12 ml per sec.] was performed in 86 patients with coronary heart disease. Additionally intraventricular digital subtraction angiography (DSA) was performed, using a Philips-device (DVI 2 CV).

[Initial experiences with the effect of chronic intermittent electromyostimulation in patients with hyperlipoproteinemias and arterial circulatory disorders].

Metabolic and clinical effects of an original electromyostimulation are explained which induces muscle contractions by changes of the field intensity in the region of microseconds in forms of delivered impulse groups. On account of the good local compatibility due to optimal irritation parameters the muscle stimulator was suitable for a long-term application. Examinations on 23 patients with hyperlipoproteinaemia and mixed HLP (n = 15) and primary hypercholesterolaemia (n = 8) after a 2 times 2 hours/day mutual stimulation of the femoral musculature in a frequency of 2 s-1 lasting four weeks yielded a significant decrease of the triglyceride and cholesterol concentrations as well as an increase of the HDL-cholesterol in mixed HLP-forms.

Selenium in cardiology and angiology.

The effect selenium in the form of sodium selenite on central hemodynamic conditions and coronary artery flow was studied in pig hearts infarcted by a ligature of the ramus interventricularis anterior. Infusions of sodium selenite solutions at levels of 1-3 mg/kg body wt improved the survival of infarcted pigs. Both short-term and long-term protective effects of selenite could be demonstrated.

[Coronary surgery in females].

In the last three years, of a total of 617 patients undergoing surgery for ischemic heart disease, 53 were women (8.6%). With one exception, all were in or shortly before the menopause.

[Behavior of late ventricular potentials in acute experimental myocardial ischemia].

Locally retarded depolarizations of the ischaemic myocardium are regarded as frequent trigger mechanisms of dangerous ventricular arrhythmias. Up to now, however, there are scarcely systematic investigations concerning their concrete developmental conditions in man, since late potentials can be made evident only by means of expensive invasive methods or signal mediation techniques. Therefore, an animal model should be built, which is suitable for the control of new therapy conceptions with antiarrhythmic drugs.

[Application of therapy with atrial controlled ventricular pacemakers with shortened AV delay time].

For the reduction of the functional obstruction of the left-ventricular outflow in hypertrophic obstructive cardiomyopathy since 1978 in selected cases conventional VAT cardiac pacemakers with shortened AV retardation time have been implanted. On the basis of 4 casuistics the insufficient adaptation of these systems to unexpectedly appearing disturbances of the cardiac rhythm is demonstrated. Thus already extreme sinus bradycardias lead to parasystole by the unchangeably given asynchronous basic frequency of the pacemakers.

[Atrial synchronous ventricular stimulation with reduced a.v. delay time as a therapeutic principle in hypertrophic obstructive cardiomyopathy].

For the hypertrophic obstructive cardiomyopathy with left-ventricular pressure gradient in rest a causal therapy is nowadays not yet known. Therefore, it should be tested, in what respect from former observations over reductions of the pressure gradient by an untimely foreign excitation of the ventricles from the apex of the right ventricle a therapy principle can be derived. For this purpose out of a group of 84 patients by left-right heart catheterization, coronarography, computer cardio-tomography and scintigraphy of the myocardium 23 test persons with typical hypertrophic obstructive cardiomyopathy and a left-ventricular gradient in rest greater than or equal to 30 mm Hg were selected for the transitory electrostimulation.

[Case report of Lyell's syndrome].

In Lyell's syndrome a toxic skin erythema is concerned which leads to the epidermal necrolysis and desquamation. An infantile and an adult form are differed; the latter is usually induced by medicaments. Two patients with apparently medicamentously induced Lyell's syndrome are presented.

Cadmium, cobalt, chromium, and experimental myocardial infarction.

In the case of experimental heart muscle infarction, the infarcted tissue of 18 pigs had a cadmium content of 0.38 μg/g dry weight and a cobalt content of 0.45 μg/g dry weight.

[Possibilities of electrotherapy in tachycardial rhythm disorders].

The pacemaker therapy of tachycardiac disturbances of rhythm used a great number of different methods which are applied according to the kind of disturbance of rhythm. A specialised intracardiac diagnostics is frequently necessary in order to select the suitable stimulation technique. A short survey of the different technical stimulation methods is given which are known from literature and for which own experiences are present.