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The menopause
Published in Michael J. O’Dowd, The History of Medications for Women, 2020
Heart ‘One of the most common complaints is paroxysmal tachycardia ... these attacks generally do not depend upon organic cardiac disease, but upon local congestion of the heart-center in the medulla oblongata, doubtless a reflex, in the majority of cases, from the alimentary tract’.
The cardiovascular system
Published in C. Simon Herrington, Muir's Textbook of Pathology, 2020
Mary N Sheppard, C. Simon Herrington
The conducting system consists of specialized cardiac myocytes that initiate the heartbeat in the sinoatrial node and conduct the impulse through the atrioventricular (AV) node and then through the common AV bundles (bundles of His) and the left and right bundle branches to the apex of the ventricles, which is the first region to contract. Disturbances of rhythm complicate many types of heart disease: some are due to damage to the conducting system, its most vulnerable regions being the AV bundle and the left and right bundle branches; however, many arrhythmias, such as extrasystoles, paroxysmal tachycardia, and fibrillation, are due to spontaneous ‘impulses’ or irregularities arising in the myocardium itself.
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Published in Anton Sebastian, A Dictionary of the History of Medicine, 2018
Lown–Ganong–Levine Syndrome Condition consisting of shortened PR interval and normal QRS on ECG associated with paroxysmal tachycardia. Described in 1952 by three American cardiologists, Bernard Lown (b 1921) of Brigham Hospital, Boston, William F. Ganong (b 1924) of the University of California, San Francisco, and Samuel Albert Levine (1891–1966).
Hospitalization rate of paroxysmal supraventricular tachycardia in Sweden
Published in Annals of Medicine, 2018
Per Rosengren, Xinjun Li, Jan Sundquist, Kristina Sundquist, Bengt Zöller
The advantages of the present study include nationwide coverage in a country with universal access to medical services of high diagnostic standards and surveilled by the National Board of Health and Welfare [25]. The main discharge diagnosis is defined in ICD-9 and ICD-10 as the main condition treated or investigated during the relevant episode. In Sweden, the Hospital discharge diagnosis should be confirmed and is always confirmed by a specialist physician (consultant). The Hospital discharge register is also almost 100% complete [25–28]. The overall validity of the Hospital discharge register is around 85–95% for most diagnoses. PSVT diagnosis has not been validated in the hospital discharge register. However, other cardiovascular diagnoses such as atrial fibrillation, myocardial infarction, heart failure and stroke have a validity between 90 and 95% [25–27]. Atrial fibrillation, which is also an ECG-based diagnosis, has a validity of 95–97% [27]. In the present study, only 6.8% had potential differential diagnosis. For instance, few patients had Wolff-Parkinson-White syndrome (WPW-syndrome); it was present only in 0.83% of patients with PSVT. We, therefore, do not believe the validity is very different from other diagnoses and especially other cardiovascular diagnoses in the Hospital Discharge Register. Nevertheless, a limitation is that the PSVT ICD-10 and 9 codes do not differentiate whether the underlying cause of the arrhythmia is atrial paroxysmal tachycardia, atrioventricular paroxysmal tachycardia, atrioventricular re-entrant nodal tachycardia, junctional paroxysmal tachycardia or nodal paroxysmal tachycardia.
Recurrent spontaneous pneumothorax in pregnancy – a case report and review of literature
Published in Journal of Community Hospital Internal Medicine Perspectives, 2018
Noman Lateef, Mustafa Dawood, Karn Sharma, Abubakar Tauseef, Muhammad Asadullah Munir, Erin Godbout
The typical symptoms of spontaneous pneumothorax, regardless of cause, include pleuritic chest pain associated with dyspnoea [2,4,9]. However, these typical symptoms are often attributed to paroxysmal tachycardia, neuralgia, or asthma exacerbation, thus contributing to underreporting of spontaneous pneumothorax [4]. Physical examination may show ipsilateral chest expansion, decreased tactile fremitus, tachycardia, tachypnea, cyanosis, diminished breath sounds, all on affected side.
The effectiveness of methylphenidate in improving cognition after brain injury in adults: a systematic review
Published in Brain Injury, 2020
Six out of the 11 studies included in this review reported no significant or ‘serious’ side effects as a result of methylphenidate treatment. The remaining studies reported side effects including increased heart rate, blood pressure, restlessness, and depressive symptoms. One participant withdrew from a study due to developing paroxysmal tachycardia while taking methylphenidate (50).