Cardiac pacemakers in absence of the SA node: responses to exercise and autonomic blockade

1978 ◽  
Vol 234 (4) ◽  
pp. H465-H470 ◽  
Author(s):  
W. C. Randall ◽  
J. Talano ◽  
M. P. Kaye ◽  
D. Euler ◽  
S. Jones ◽  
...  
Keyword(s):  
Surgical Excision ◽  
P Wave ◽  
Cardiac Pacemakers ◽  
Complete Excision ◽  
Sinus Arrhythmia ◽  
Sa Node ◽  
Autonomic Blockade ◽  
Parasympathetic Regulation ◽  
Sympathetic And Parasympathetic Regulation ◽  
Atrial Rhythm

Surgical excision of the sinoatrial node, verified histologically, is followed by a supraventricular (atrial) rhythm in both resting and exercising dog whether anesthetized or conscious. The ECG is characterized by a definitive P wave and associated atrial electrograms. Waxing and waning in heart rate, generally referred to as sinus arrhythmia continues in the awake animal after complete excision of the SA node. This arrhythmia is responsive to both adrenergic and cholinergic interventions, thus indicating the presence of both sympathetic and parasympathetic regulation of subsidiary atrial pacemaking tissues.

scholarly journals Management of recurrent peripheral giant cell granuloma -a case report

2016 ◽  
Vol 4 (2) ◽  
pp. 138
Author(s):  
Santha Kumari Prathypaty ◽  
Santhi Priya Potharaju ◽  
Ravi Kanth Chintala ◽  
Satheesh Kumar Guvvala ◽  
Jai Krishna Srikanth Kolliboyana
Keyword(s):  
Case Report ◽  
Giant Cell ◽  
Chronic Infection ◽  
Tooth Extraction ◽  
Benign Tumor ◽  
Surgical Excision ◽  
Giant Cell Granuloma ◽  
Complete Excision ◽  
Periodontal Membrane ◽  
Peripheral Giant Cell Granuloma

Peripheral giant cell granuloma (PGCG) which is also called as Giant cell Epulis is one of the most common reactive hyperplastic lesions of the oral cavity. There are various etiologies relating PGCG which include local irritation, trauma, tooth extraction, irregular restorations, plaque, calculus, chronic infection & impacted food. One important other etiology of this benign tumor is its origin from periosteum or periodontal membrane. Excision of the lesion completely along with extraction of involved tooth is the option of treatment to prevent recurrence of the lesion in some cases. This case report describes the recurrence of the Peripheral giant cell granuloma even after complete excision in 3 months.Management of recurrent Peripheral giant cell granuloma by surgical excision of the lesion was carried out along with extraction of the associated tooth and curettage of the bone walls. Profuse bleeding after tooth extraction was managed by gel-spun. Periodic recalls doesn’t show any recurrence until one month.

scholarly journals Cavernous Hemangioma of the Tongue

2015 ◽  
Vol 6 (3) ◽  
pp. 109-111 ◽  
Author(s):  
Jatin P Shah ◽  
Ivana Petrovic ◽  
Ben Roman
Keyword(s):  
Cavernous Hemangioma ◽  
Soft Tissues ◽  
Vascular Malformations ◽  
Surgical Excision ◽  
Vascular Anomalies ◽  
Preoperative Imaging ◽  
Vascular Tumors ◽  
Adult Onset ◽  
Complete Excision ◽  
Intramuscular Hemangioma

ABSTRACT Background Vascular anomalies are divided into vascular tumors, hemangiomas being the most common, and vascular malformations. Most vascular anomalies are noticed at birth or occur during infancy, and generally involve skin or subcutaneous soft tissues. Adult onset hemangiomas are rare, and intramuscular location is extremely rare. Surgical excision is recommended for hemangiomas in adults, if they are symptomatic, or manifest growth. Materials and methods We report a rare case of a 51-year-old woman, with an intramuscular hemangioma of the tongue, presenting as a submental mass. Preoperative imaging for assessment of tumor extent was followed by a successful surgical excision. Results Postoperative course was uneventful with primary healing of the wound, and with no functional deficit of tongue function. Conclusion Although a variety of treatment approaches are reported for childhood hemangiomas, surgical excision is the preferred treatment for adult onset symptomatic hemangiomas. Preoperative work up should include imaging preferably with contrast enhanced magnetic resonance imaging (MRI). Embolization may be considered for larger lesions. Intraoperative hypotension should be avoided to ensure identification of the entire lesion to ensure complete excision. How to cite this article Petrovic I, Roman B, Shah JP. Cavernous Hemangioma of the Tongue. Int J Head Neck Surg 2015;6(3):109-111.

scholarly journals Treatment of Facial Nevi with Ideal Design and Splitting Technique

2021 ◽  
Author(s):  
Qiang Sun ◽  
Jiayan Guo ◽  
Siyu Liu ◽  
Mengru Zhu ◽  
Jingyi Feng ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Plastic Surgery ◽  
Surgical Excision ◽  
Added Value ◽  
Complete Excision ◽  
Splitting Technique ◽  
Surgical Methods ◽  
Serial Excision ◽  
Non Surgical Treatment

Abstract Background: The treatment of nevi includes surgical treatment and non-surgical treatment. Non-surgical treatment has many defects in the clinic, whereas surgical treatment is applicable to any type of nevi. However, there is no unified standard for surgical methods. Methods: Patients with facial nevi ( width ≤4 cm) and high requirements for beauty were included. Preoperatively, incision design and resection range based on the recommended wrinkles or folds of each region and principle of plastic surgery. Intraoperatively, a nevus flap was formed, and then equally divided by splitting technique. After the splitting nevus flap was resected, suture without tension was performed. Results: 21 patients underwent surgical excision. 14 patients underwent complete excision, while 7 patients underwent serial excision. The patients were satisfied with the appearance, local sensations were normal, and there were no secondary deformities of the surrounding facial organs without recurrence.Conclusion: This method is of added value, which achieved by the correct assessment of the size and location of facial nevi and designed according to the reference marks in each region and complete or serial excision.

scholarly journals Juvenile Nasopharyngeal Angiofibroma - Excision Through Lateral Rhinotomy and Sublabial Approach - A Case Report

1970 ◽  
Vol 20 (1) ◽  
pp. 78-81
Author(s):  
NK Sinha ◽  
MH Rashid ◽  
MM Shaheen ◽  
DC Talukder ◽  
MAY Fakir ◽  
...  
Keyword(s):  
Surgical Excision ◽  
Complete Removal ◽  
Definitive Treatment ◽  
Surgical Approaches ◽  
Complete Excision ◽  
Nasopharyngeal Angiofibroma ◽  
Male Adolescents ◽  
Large Size ◽  
Complete Surgical Excision ◽  
Sublabial Approach

Juvenile angiofibroma is a rare hypervascular, locally aggressive benign tumour which is exclusively found in the nose and paranasal sinuses of male adolescents. The definitive treatment for this tumour is complete surgical excision. Different surgical approaches are used for complete excision. Most recent development is excision of the tumour using endoscopes. But in certain cases with large size and different extensions, open transfacial approaches are the choice for complete removal and for less operative bleeding, which are the main challenges for surgical excision of this tumour. DOI: http://dx.doi.org/10.3329/jdmc.v20i1.8587 J Dhaka Med Coll. 2011; 20(1) :78-81

scholarly journals Nodular fasciitis of the parotid gland engulfing the facial nerve: a conservative approach

2019 ◽  
Vol 12 (10) ◽  
pp. e231203
Author(s):  
Stephen Bennett ◽  
Kristian Hutson ◽  
Olakunle Ajayi ◽  
Andreas Hilger
Keyword(s):  
Parotid Gland ◽  
Facial Nerve ◽  
Benign Lesion ◽  
Surgical Excision ◽  
Needle Aspiration ◽  
Nodular Fasciitis ◽  
Conservative Approach ◽  
Complete Excision ◽  
Diagnostic Uncertainty ◽  
Accepted Practice

Nodular fasciitis (NF) is a rapidly growing benign lesion rarely reported in the parotid gland. It shares cytological features with other benign and malignant parotid neoplasms and may be difficult to diagnose based on fine needle aspiration cytology alone. Given this diagnostic conundrum, surgical excision for histology is recommended to facilitate definitive diagnosis. A case with significant involvement of the facial nerve is described, which has not previously been reported in the literature. Despite features of potential malignancy, the decision was taken to biopsy the lesion and not proceed to complete excision in an attempt to reduce the risk of facial nerve injury. Expert opinion later diagnosed NF. Contrary to accepted practice, where diagnostic uncertainty remains around the malignant potential of a lesion, risks and benefits of complete excision versus a conservative approach should be carefully weighed especially when the facial nerve is involved and NF is a possible diagnosis.

scholarly journals Asymptomatic nodule on face: Dermoscopic and histopathological clue for diagnosis

2020 ◽  
Vol 17 (1) ◽  
pp. 63-65
Author(s):  
Anisha Joshi ◽  
Deeptara Pathak Thapa
Keyword(s):  
Head And Neck ◽  
Peripheral Nerves ◽  
Neck Region ◽  
Surgical Excision ◽  
Benign Tumors ◽  
Complete Excision ◽  
Head And Neck Region ◽  
The Common ◽  
Slow Growing ◽  
Rare Diagnosis

Schwannomas/ neurilemmomas are benign tumors of nerve sheath arising from Schwann cells that form myelin sheath around peripheral nerves. They are usually solitary, slow growing and encapsulated lesions. Head and neck are the common sites. We report a case of a 38 years old Nepalese female who had presented with a solitary asymptomatic, slow growing nodule on the left side of the chin for the last three years. Dermoscopy of the lesion revealed arborizing vessels with brownish pigmentation overlying a whitish to pinkish background. Complete excision of the lesion was performed. Histopathological evaluation of the lesion revealed schwannoma. Though schwannomas are a rare diagnosis, they should be considered as a differential diagnosis of any unilateral, asymptomatic, slow growing nodule in the head and neck region. Dermoscopy is a useful tool which helps to differentiate schwannoma from other lesions. Histopathology is the gold standard for diagnosis and the treatment of choice is surgical excision.  

scholarly journals Giant Cell Tumor of the Carotid Body: A Rare Tumor in a Novel Location

2019 ◽  
Vol 98 (3) ◽  
pp. 165-168
Author(s):  
Payal Chowdhary ◽  
Gabriel S. Makar ◽  
Thomas Holdbrook ◽  
Thomas C. Spalla
Keyword(s):  
Soft Tissue ◽  
Giant Cell Tumor ◽  
Giant Cell ◽  
Carotid Body ◽  
Soft Tissues ◽  
Surgical Excision ◽  
Cell Tumor ◽  
Biological Behavior ◽  
Complete Excision ◽  
Tissue Equivalent

Primary giant cell tumor of soft tissue (GCT-ST) is a rare entity that is considered the soft tissue equivalent of giant cell tumor of bone. It most commonly arises in soft tissues of the trunk and extremities, with occurrence in the head and neck being extremely rare. We report a case of GCT-ST of the carotid body, the first report of a tumor of this kind arising from this site in the neck. Giant cell tumor of soft tissue is generally considered a benign tumor with low malignant potential; thus, surgical excision is usually curative. However, due to the location and invasive nature of this patient’s tumor, complete excision was not possible. We discuss the implication of this for long-term management of this patient, as well as similarities and differences in clinical presentation, histology, and biological behavior between this case and previously reported cases of GCT-ST.

scholarly journals Congenital Arteriovenous Malformations: A Follow-Up of Treatment

2005 ◽  
Vol 13 (1) ◽  
pp. 23-26 ◽  
Author(s):  
Jh Phillips ◽  
Cl Tang ◽  
D Armstrong ◽  
T De Chalain ◽  
R Zuker
Keyword(s):  
Patient Outcomes ◽  
Arteriovenous Malformations ◽  
Vascular Malformations ◽  
Treatment Strategies ◽  
Parent Satisfaction ◽  
Surgical Excision ◽  
Complete Excision ◽  
Satisfaction With Treatment ◽  
Sick Children

Due to the rarity of arteriovenous malformations (AVMs), there is a paucity of information on the outcomes of various treatments. Presently, the mainstays of treatment of an AVM are embolization, surgical excision or a combination of both. A retrospective study of 26 patients with AVMs treated at the Hospital for Sick Children, Toronto, Ontario between 1985 and 1995 was performed. The treatment strategies and patient outcomes were compared in terms of efficacy, complications and the response of patients and their families to their overall treatment. The overall findings showed that embolization alone was effective in controlling symptoms, but may be associated with an increased AVM size. A partial excision of an AVM does not appear to exacerbate recurrence, as has been previously reported. In fact, even after what appears to be a complete excision of the AVM, recurrence may still occur. Complications from a surgical excision of the AVM are more frequent but less devastating than complications from embolization of the lesion. The overall patient or parent satisfaction with treatment was high with respect to improvement in outcome. It is expected that with an increasing understanding of vascular malformations, and the evolution of interventional radiological techniques, complications will decrease and results as a whole will improve.

scholarly journals Patient reported cosmetic outcome after vacuum assisted excision of benign breast lesions: a cross-sectional study

2020 ◽  
Vol 93 (1114) ◽  
pp. 20190994
Author(s):  
Elles M.F. van de Voort ◽  
Taco M.A.L. Klem ◽  
Gerson M. Struik ◽  
Erwin Birnie ◽  
Renata H.J.A. Sinke ◽  
...  
Keyword(s):  
Tumor Size ◽  
Surgical Excision ◽  
Cosmetic Outcome ◽  
Study Patient ◽  
Breast Lesions ◽  
Benign Lesions ◽  
Complete Excision ◽  
Cross Sectional ◽  
Patient Reported ◽  
Benign Breast Lesions

Objective: Better cosmetic outcome after vacuum assisted excision (VAE) compared to surgical excision of benign breast lesions is suggested in previous studies but has never been evaluated with validated outcome measures. In this study, patient reported cosmetic outcome after VAE was evaluated. Methods: Patients who underwent VAE between July 2017 and December 2018 were invited to complete the cosmetic subscale of the Dutch Breast Cancer Treatment Outcome Scale, comparing the treated with the untreated breast. Response mode ranged from 1 (no difference) to 4 (large difference) and cosmetic outcome was calculated as the unweighted mean. Clinical outcomes included: tumor size, number of cores, complications, residual lesions and recurrences. Results: Response rate was 73.4% (47 of 64 patients). Median tumor size was 15 mm (range 5–51 mm) and median number of cores 6.5 (range 1–85), complete excision was confirmed in all but two patients. Mean cosmetic outcome was good (mean score ≤1.75) in 74% of patients and no patients reported a poor cosmetic outcome (mean score >3.25). A hematoma occurred in five patients (one needed aspiration) and a skin rash in one patient, no patients developed an infection or seroma. Conclusion: In this study VAE is safe and effective for tumors up to 5 cm and patient reported cosmetic outcome was good. Patients with benign lesions could benefit from VAE as an alternative for surgical excision. Advances in knowledge: A formal quantitative measurement of cosmetic outcome after vacuum assisted excision for benign breast lesions was still lacking. This study shows that this cosmetic outcome is overall good in benign lesions up to 5 cm.

scholarly journals Electrocardiographic parameters of the American Miniature Horse: influence of age and sex

2016 ◽  
Vol 36 (6) ◽  
pp. 551-558
Author(s):  
Bianca P. Santarosa ◽  
Maria L.G. Lourenço ◽  
Gabriela N. Dantas ◽  
Carla M.V. Ulian ◽  
Marta C.T. Heckler ◽  
...  
Keyword(s):  
Age Groups ◽  
Frontal Plane ◽  
The Elderly ◽  
P Wave ◽  
Sinus Arrhythmia ◽  
T Wave ◽  
St Segment ◽  
Electrocardiographic Parameters ◽  
Electrocardiogram Ecg ◽  
Age And Sex

Abstract: The veterinary cardiology has growing importance in equine medicine. There are studies of standardization of electrocardiographic parameters of many races, according to their stature and ability. However, no studies are in the literature with the American Miniature Horse. To evaluate the electrocardiogram (ECG) tracing configuration of this breed at rest and to verify the influence of age and sex on ECG parameters, 203 horses including 143 females and 60 males were divided into four age groups (foals, yearlings, adults and elderly). Electrocardiographic parameters were performed by computerized electrocardiogram (TEB), and the parameters were evaluated in six leads of frontal plane (Lead I, II, III, aVR, aVL and aVF) and base-apex (BA). Heart rates (HR) decreased with increasing age were higher in males than in females. Sinus tachycardia followed by sinus arrhythmia was dominant in both sexes. The cardiac axis was higher in males and ranged between 120° and 150° for foals, 30° and 60° for yearlings and adults, and 60° and 90° for the elderly. The P wave was bifid in several animals. The P-wave amplitude and T-wave duration from lead II and BA were larger in males than in females. The majority of the animals exhibited ST segment depression and a negative T-wave. The most common QRS complex morphology was Qr. Differences were observed between the electrocardiographic tracings of males and females, and age influenced the ECG parameters. Therefore, this study established the ECG patterns for the American Miniature Horse breed and could be used to determine the influence of age and sex on several of the studied variables.

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