The Trapped Temporal Horn

Neurosurgery ◽  
1979 ◽  
Vol 5 (2) ◽  
pp. 245-249 ◽  
Author(s):  
Harold Smith ◽  
Dixon Moody ◽  
Marshall Ball ◽  
Wayne Laster ◽  
David L. Kelly ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Right Ventricle ◽  
Brain Stem ◽  
Lateral Ventricle ◽  
Ventricular Wall ◽  
X Ray ◽  
Temporal Horn ◽  
Grade Ii ◽  
Computerized Cranial Tomography ◽  
The Right

Abstract Although the advent of computerized cranial tomography (CT) has decreased the number of pneumoencephalograms performed for the diagnosis of hydrocephalus and lesions of the posterior fossa, brain stem, and ventricles, there are some patients in whom pneumoencephalography should still be done because it adds valuable information to that obtained with CT. When the temporal horn becomes obstructed, the choroid plexus and ependymal surface “upstream” from the obstructing mass continue to produce cerebrospinal fluid (CSF). The temporal horn can thus enlarge enough to appear as a mass on CT because of its reduced x-ray attenuation coefficient. Pneumoencephalography is effective in this situation because air will flow past a mass that obstructs CSF and because the ventricular system dilates during pneumoencephalography. When pneumoencephalography is used in a patient with a trapped temporal horn, the partially trapped horn may enlarge approximately 24 hours later. With that precaution in mind, the neurosurgeon should find pneumoencephalography to be a useful adjunct to CT in delineating the cause of a trapped temporal horn. In the three patients reported here CT had indicated a unilateral trapped temporal horn; pneumoencephalography confirmed that finding and demonstrated both the location and the nature of the lesion. One patient had a Grade II astrocytoma fungating into the atrium of the right lateral ventricle, one had a mass extending into the right ventricle from the medial and superior ventricular wall with nodular encroachment on the ventricle, and one had a meningioma in the atrium of the right lateral ventricle.

Uhl’s anomaly: rare but does exist

2016 ◽  
Vol 26 (7) ◽  
pp. 563-565
Author(s):  
Parveen Kumar ◽  
Hemant Chaturvedi ◽  
Payal Khatri ◽  
Sanjay Khatri
Keyword(s):  
Right Ventricle ◽  
Right Ventricular ◽  
Systolic Dysfunction ◽  
Lower Limbs ◽  
Ventricular Wall ◽  
Ventricular Systolic Dysfunction ◽  
Resonance Imaging ◽  
Right Ventricular Wall ◽  
Thin Walled ◽  
The Right

A 17-year-old boy presented with facial puffiness and swelling in the lower limbs for 6 months and one episode of syncope 15 days earlier. Transthoracic echocardiography showed a dilated right atrium and right ventricle with right ventricular systolic dysfunction. The free wall of the right ventricle was thinned out and devoid of myocardium and trabeculations. Cardiac magnetic resonance imaging showed an extremely dilated thin-walled right ventricle and absence of trabeculations, with no fat signal in the right ventricular wall, in contrast to that seen in arrhythmogenic ventricular dysplasia, which confirmed the diagnosis of Uhl’s anomaly.

scholarly journals A case of hydrocephalus and meningoencephalocele in a rabbit, caused by aqueductal malformation

1974 ◽  
Vol 8 (2) ◽  
pp. 167-176 ◽  
Author(s):  
J. A. G. Geelen
Keyword(s):  
Cerebrospinal Fluid ◽  
Right Ventricle ◽  
Ependymal Cells ◽  
Fluid Circulation ◽  
Cerebrospinal Fluid Circulation ◽  
Csf Pressure ◽  
Developmental Disturbance ◽  
The Right

The hydrocephalic brain of a 3-week-old rabbit with a meningoencephalocele is described. The hydrocephalus is caused by obstruction of cerebrospinal fluid circulation in the aqueduct, which is anomalously formed by several minute tubules surrounded by ectopic ependymal cells. The encephalocele is an atrophied part of the right ventricle forced out of the skull by increased CSF pressure. It is suggested that the aqueductal malformation is caused by an ependymal developmental disturbance.

scholarly journals The cardiac STAT3 intercalated disc specific expression in tail suspension rat

2021 ◽  
Author(s):  
Dongyu He ◽  
Aihua Hu ◽  
Jun Tong ◽  
Chang Zheng ◽  
Yiming Liu ◽  
...  
Keyword(s):  
Right Ventricle ◽  
Right Ventricular ◽  
Ventricular Wall ◽  
Tail Suspension ◽  
Intercalated Disc ◽  
Right Heart ◽  
Microgravity Simulation ◽  
Right Ventricular Wall ◽  
Specific Accumulation ◽  
The Right

Background: The cardiovascular system is significantly agitated by loss of gravity. In microgravity, the body fluids shift toward the thoracic cavity, induced the heart becomes more spherical. This further increased the cardiac preload with an increasing of transmural central venous pressure, affects the right heart ventricles to tolerating the enhanced preload on the right ventricular wall. Method: In this study we investigated the rat right ventricle remodeling in simulating persistent microgravity by using tail-suspension model, examined the remolding of the heart and the specific STAT3 expression in right heart myocardium. Result: The results indicated that microgravity induced heart remodeling included a significant increasing of the ventricular weight in the left. However, the right ventricle was not increased significantly in the microgravity simulation rats. The histological study demonstrated that the outstanding development on right ventricular wall which included the gap junction remodeling and STAT3 signaling protein specific accumulation in the right ventricles. Conclusion: The results existed that the right cardiac ventricle has a distinctive remodeling process during microgravity simulation which was not the muscular hypertrophy and relative weight increasing, but manifested the STAT3 accumulation and the electrical gap junction remodeling. The effect of microgravity induced right ventricle remodeling and the STAT3 specific accumulation can be used for multi-purpose research. Key words: Microgravity simulation; Right ventricle remodeling; Intercalated disc

scholarly journals Ventricular Myocardial Sheet

2018 ◽  
Vol 14 (1) ◽  
pp. 50-57
Author(s):  
Mostafa R. Ali
Keyword(s):  
Left Ventricle ◽  
Right Ventricle ◽  
Muscle Fibers ◽  
Single Layer ◽  
Ventricular Myocardium ◽  
Left Ventricular ◽  
Ventricular Wall ◽  
Myocardial Layers ◽  
Running Pattern ◽  
The Right

Background: Despite the fact that the exact architecture and orientation of ventricular myocardium are critical to cardiac functions either in health or disease, it is still debated. Objectives: Anatomical demonstration of the ventricle myocardium (VM)as a single, long and continuous muscular sheet and this muscular sheet can be dived into 3-segments. As a new anatomical concept the left ventricle is a triple layers wall; whether the right ventricle is a single layer wall.Histological demonstration of different directions of muscle-fibers at each layer of ventricular myocardium. Type of the study: Cross- sectional study. Methods: In this study 100-heart (fish, chicken, goat, sheep and cow) were dissected and analyzed. Dental lacrona and wax knife used majorly in the dissection, boiling of the hearts with distilled water and finally opening them by the “opening-technique”. Results: Ventricular myocardium is a single, long and continuous muscular sheet in 100-samples of different species which had been included in the study (passing from the fish toward the cow). VMS can be divided into 3-segments in (100% of cow, 95% of goat and 85% of sheep). The left ventricle is a triple layers wall; whether the right ventricle is single layer wall, this result observed in (100% of cow, 95% of goat and 85% of sheep).Finally different directions of muscle fibers observed at each layer of ventricular myocardium where the subendocardial layer shows transverse running pattern of muscle fibers, mesocardial layer shows longitudinal running pattern of muscle fibers and subepicardial layer shows mixed running patterns of muscle fibers. Conclusion: Ventricular myocardium is single, long and continuous muscular sheet. This sheet consists of 3-segments. These segments coils in spiral track and form the triple layers left ventricular wall and the single layer right ventricular wall. By histological examination of ventricular myocardial layers different directions of muscle fibers observed at each layer.

scholarly journals ICD-Electrode-Perforation of the Right Ventricle to the Pericardium with and without Pericardial Effusion

2020 ◽  
pp. 1-4 ◽  
Author(s):  
Line Lisbeth Olesen ◽  
Line Lisbeth Olesen
Keyword(s):  
Pericardial Effusion ◽  
Right Ventricle ◽  
Low Voltage ◽  
X Ray ◽  
First Case ◽  
Difficult Time ◽  
Chest X Ray ◽  
Cardiac Silhouette ◽  
The Right ◽  
Electrical Alternans

Two cases are described of iatrogenic traumatic perforation of an ICD electrode through the myocardium in the right ventricle and to the pericardium. The diagnostic gold standard gated CT was not necessary in either case. In the first case the lead insertion was difficult, time-consuming, and complicated by the PostCardiac Injury Syndrome and a slowly accumulating hemorrhagic pericardial effusion causing cardiac tamponade, diagnosed by the clinical picture, elevated CRP, ECG with low voltage and electrical alternans, chest X-ray revealing enlarged cardiac silhouette and echocardiography a large effusion, treated with pericardiocentesis and drainage. In the other case there was painful pericardial irritation and extracardiac pacing and ICD failure with loss of capture, no diagnostic changes in ECG, chest X-ray, and echocardiography; diagnosed by fluoroscopy during replacement at the lead, which went without complications and without pericardial effusion.

scholarly journals Comparative Study Between the Papillary Muscles of the Right Ventricle and the Left Ventricle Papillary Muscles

2018 ◽  
Vol 24 (2) ◽  
pp. 77-81
Author(s):  
Tobă Marius ◽  
Iliescu Dan Marcel ◽  
Bordei Petru ◽  
Popescu-Chiriloaie Cristina ◽  
Gheorghiţescu Jancă Ruxandra
Keyword(s):  
Left Ventricle ◽  
Right Ventricle ◽  
Comparative Study ◽  
Upper Extremity ◽  
Papillary Muscle ◽  
Muscle Group ◽  
Ventricular Wall ◽  
Papillary Muscles ◽  
Chordae Tendineae ◽  
The Right

Abstract We used formalinized heart dissection obtained from forensic laboratory in Constanta, analyzing the papillary muscles and their tendon chordae. We studied at the papillary muscles the number of forms that could be in single or multiple muscular bodies, encountering more than five body muscles in a papillary muscle group. We measured using caliper graduated in millimeters, the height of each papillary muscle body (from the base to its upper end) and its thickness at the base and at its upper extremity. Chordae tendon we examined in terms of their origin and number at the level of each papillary muscle, the dimensions (length and thickness), orientation and how they end at the atrioventricular valves. We noted the presence of „false”chordae tendineae, which were disposed between the papillary muscle and the ventricular wall. The results were compared with data in the literature that I had the opportunity to consult

Pulmonary artery catheterization in the rat

1978 ◽  
Vol 235 (4) ◽  
pp. H452-H454 ◽  
Author(s):  
B. E. Hayes ◽  
J. A. Will
Keyword(s):  
Blood Flow ◽  
Pulmonary Artery ◽  
Right Ventricle ◽  
Ventricular Wall ◽  
Pulmonary Artery Catheterization ◽  
Pulmonic Valve ◽  
Closed Chest ◽  
Flow Through ◽  
The Right

A method of pulmonary artery (PA) catheterization in the closed-chest rat is described. This catheterization is best accomplished with teflon catheters having a (shepherd's crook) tip. Catheter preparation is detailed. The functional advantages of such a PA catheter are: 1) the tip can remain free within the right ventricle (RV) without becoming occluded by contact with the ventricular wall, and 2) entry into the PA is simple and reproducible. Dual catheterization of the RVand PA produced only a small systolic gradient (3 mmHg) across the pulmonic valve. We concluded that the PA catheter does not unduly obstruct blood flow through this valve.

scholarly journals Reconstruction of the right ventricle with diaphragm driven right ventricular wall device.

1982 ◽  
Vol 136 (2) ◽  
pp. 203-214 ◽  
Author(s):  
YUZURU KAGAWA ◽  
TADAYOSHI HONGO ◽  
SHINICHI NITTA ◽  
NAOSHI SATO ◽  
TAKASHI WATANABE ◽  
...  
Keyword(s):  
Right Ventricle ◽  
Right Ventricular ◽  
Ventricular Wall ◽  
Right Ventricular Wall ◽  
The Right

scholarly journals Unusual Needle Migration into the Heart of a Pediatric Patient

2021 ◽  
Author(s):  
Noor Mohamad Noori ◽  
Seyed Hosein Soleimanzadeh Mousavi ◽  
Changiz Azadi Ahmadabadi
Keyword(s):  
Early Detection ◽  
Right Ventricle ◽  
Right Ventricular ◽  
Ct Scan ◽  
Operating Room ◽  
Ventricular Wall ◽  
Right Ventricular Wall ◽  
Life Threatening ◽  
Uncommon Case ◽  
The Right

Sharp-object penetration into the chest is rare and may lead to life-threatening complications, hence the significance of early detection and removal. We present an uncommon case of the accidental penetration of a sewing needle into the chest of a 5-year-old girl, with the needle traveling from the entrance site to the right ventricle through the lung tissue. Due to the possibility of cardiovascular accidents, the patient was transferred to a special ward. For positioning and correct actions, TTE and CT scan of the chest with and without contrast were performed and the presence of a tangential needle with the right ventricular wall and inside the pericardium was reported. The patient was taken to the operating room, and after exploring, a 2 cm needle was inserted into the right ventricle and removed. The patient was discharged after 5 days.

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