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Biotelemetry and patient monitoring最新文献

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Intracranial pressure telemetry system. I. Hardware development. 颅压遥测系统。一、硬件开发。
Biotelemetry and patient monitoring Pub Date : 1981-01-01
W H Ko, A Leung, E Cheng, R J Lorig
{"title":"Intracranial pressure telemetry system. I. Hardware development.","authors":"W H Ko,&nbsp;A Leung,&nbsp;E Cheng,&nbsp;R J Lorig","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Results in the development of intracranial pressure(ICP) telemetry systems are reported. Included are a single-channel ICP system and a two-channel ICP and temperature system. The unit used hybrid-integrated circuits housed in a Kovar flatpack and packaged with polyurethane or Hysol epoxy. Battery and radio frequency (RF) induction power supplies were tested. The two-channel systems used RF power at 3.5 MHz and transmitted signals around 120 MHz. The package measures 3 x 2 x 0.8 cm and weighs 9 g. The pressure range is -20 to +100 mm Hg with accuracy to 1.0 mm Hg. The implant measures absolute pressure and has a baseline stability of better than +/- 2 mm Hg/month. 17 dogs and 4 goats were used for in vivo evaluation. A summary of results is presented. Detailed evaluation is given in section II of this paper.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"8 3","pages":"131-50"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18309207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ambulatory monitoring of arterial blood pressure. Comparison between blood pressure measurements obtained with the Remler M 2000 portable recorder and by radiotelemetry under laboratory conditions and during everyday activities. 动脉血压动态监测。在实验室条件下和日常活动中，用Remler M 2000便携式记录仪和无线电遥测获得的血压测量值的比较。
Biotelemetry and patient monitoring Pub Date : 1981-01-01
K Bachmann, G Bäuerlein
{"title":"Ambulatory monitoring of arterial blood pressure. Comparison between blood pressure measurements obtained with the Remler M 2000 portable recorder and by radiotelemetry under laboratory conditions and during everyday activities.","authors":"K Bachmann,&nbsp;G Bäuerlein","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Simultaneous indirect and direct arterial blood pressure measurements were performed with a Remler M 2000 (RM) portable recorder and by radiotelemetry (RT) in 21 subjects under various conditions such as rest in the supine position and in an 80 degree upright position on a tilting table, during bicycle ergometry, physical exercise on the terrain and under the emotional stress of driving a car. There is a good correlation between semiautomatic pressure measurements carried out with the RM portable recorder and radiotelemetric data. The differences observed are basically due to the auscultation method. But the RM has an advantage over the auscultation method in that it objectively registers the Korotkov sounds and records them on a tape, not only under laboratory conditions but also during everyday activities.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"8 1-2","pages":"47-55"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18309198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Telemetry of cardiac left ventricular pressure in conscious dogs. 有意识犬心脏左心室压遥测。
Biotelemetry and patient monitoring Pub Date : 1981-01-01
M Gerold, R Eigenmann, H Wolfgang
{"title":"Telemetry of cardiac left ventricular pressure in conscious dogs.","authors":"M Gerold,&nbsp;R Eigenmann,&nbsp;H Wolfgang","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A fully implantable telemetric system for the measurement of cardiac left ventricular pressure and derived parameters in conscious dogs is presented. It provides the following advantages: ethical acceptability, scientific relevance, economical experimentation, avoidance of stress-induced situations for the animal, experiments without anaesthesia or sedation. The system has an operation time which allows the sequential pharmacological evaluation of a great number of drugs in individual dogs as has been shown by testing the effect of the positive inotropic agent, dobutamine, and the calcium antagonists, verapamil and nifedipine.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"8 1-2","pages":"28-32"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18310200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A mercuric iodide detector unit implantable and externally powered for use in radionuclide tracer studies in small animals. 一种可植入和外部供电的碘化汞探测器装置，用于小动物的放射性核素示踪剂研究。
Biotelemetry and patient monitoring Pub Date : 1981-01-01
B Singh, S Vadstrup, G Pearce, R W Bunce, J Bojsen
{"title":"A mercuric iodide detector unit implantable and externally powered for use in radionuclide tracer studies in small animals.","authors":"B Singh,&nbsp;S Vadstrup,&nbsp;G Pearce,&nbsp;R W Bunce,&nbsp;J Bojsen","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A small externally powered implantable gamma-radiation detector unit (35 X 12 mm diameter containing a mercuric iodide detector (HgI2), charge amplifier, radiotransmitter and an inductive power supply has been constructed. Since the total weight of the device is 5 g, it is suitable for implantation in laboratory animals such as rats or hamsters. A comparison between the implanted HgI2 detector unit and a conventional stationary 2 X 2 inch NaI(TI) detector has been performed by simultaneous measurements of the 133Xe clearance from a depot. Using 125I-iothalamate a kidney function study of an unrestrained hamster is shown as an example of measurements in the unrestrained animal.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"8 4","pages":"204-12"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18348299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Behavior of heart rate and incidence of arrhythmia in swimming and diving. 游泳、跳水时心率变化及心律失常发生率。
Biotelemetry and patient monitoring Pub Date : 1981-01-01
K Jung, W Stolle
{"title":"Behavior of heart rate and incidence of arrhythmia in swimming and diving.","authors":"K Jung,&nbsp;W Stolle","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Heart rate behaviour and the incidence of arrhythmia were recorded in 29 young subjects aged between 16 and 20 years using radiotelemetry equipment. The study consisted of four regimens: 100m freestyle swimming with and without an aqualung, up to 50m under water swimming without a breathing apparatus (skin diving) and 100m under water swimming with an aqualung (scuba diving). In the course of the swimming experiments the heart rate tracing exhibits three phases, namely: (a) a sharp rise in the first 10 s; (b) a reduction in the rate of increase, and (c) a constant plateau at approximately 184 bpm without an aqualung and 168 bpm with an aqualung. During apnoeic diving there is a slight increase in heart rate, followed by a rapid drop (vasovagal diver's bradycardia) and finally a plateau at approximately 55 bpm. Diver's bradycardia does not occur when the diver uses an aqualung; the heart rates then correspond to those observed during swimming (maximal rate approximately 169 bpm). Cardiac arrhythmia occurred in 18 instances (3 each during swimming with and without a breathing apparatus, 5 during diving with an aqualung and 7 during diving without an aqualung). 15 were cases of supraventricular extrasystoles, 12 occurred in the plateau phase. A man with a thorough endurance training exhibited in addition to supraventricular extrasystoles a transient bigeminy, substitutive AV systoles and an electric alternans during diving without an aqualung. He experienced no subjective feeling of impairment of performance, nor was there any objective reduction in efficiency.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"8 4","pages":"228-39"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18348301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A microminiature hybrid multichannel implantable biotelemetry system. 一种微型混合多通道植入式生物遥测系统。
Biotelemetry and patient monitoring Pub Date : 1981-01-01
J D Pauley, M Reite
{"title":"A microminiature hybrid multichannel implantable biotelemetry system.","authors":"J D Pauley,&nbsp;M Reite","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"8 3","pages":"163-72"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17846805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Implantable telemetry systems. 植入式遥测系统。
Biotelemetry and patient monitoring Pub Date : 1981-01-01
{"title":"Implantable telemetry systems.","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"8 3","pages":"121-88"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18309204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Continuous recording of intra-arterial blood pressure during graded bicycle ergometry and stair climbing in essential hypertension. 高血压患者分级骑行和爬楼梯时动脉内血压的连续记录。
Biotelemetry and patient monitoring Pub Date : 1981-01-01
M W Millar-Craig, S Mann, V Balasubramanian, A Lahiri, E B Raftery
{"title":"Continuous recording of intra-arterial blood pressure during graded bicycle ergometry and stair climbing in essential hypertension.","authors":"M W Millar-Craig,&nbsp;S Mann,&nbsp;V Balasubramanian,&nbsp;A Lahiri,&nbsp;E B Raftery","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Ambulatory intra-arterial blood pressure monitoring was used to record blood pressure during graded exercise on a bicycle ergometer and during stair climbing in 6 normotensive subjects, 19 patients with untreated uncomplicated hypertension and 8 patients with untreated hypertension and ECG evidence of left ventricular hypertrophy. Exercise was performed on the bicycle ergometer at 250, 400, 700 and 1,000 kpm/min and each subject also climbed a maximum of 160 stairs. Bicycle ergometry was associated with an increase in systolic and diastolic blood pressure, and in patients with uncomplicated hypertension the levels of pressure attained were high. Stair climbing produced an increase limited mainly to systolic blood pressure, and in some subjects was followed by a secondary increase in both systolic and diastolic pressure during the recovery period. The blood pressure response to bicycle ergometry and stair climbing was generally similar in normotensive and hypertensive subjects but the increase in pressure was greatest in the patients with uncomplicated hypertension.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"8 1-2","pages":"33-46"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18309197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessment of circadian rhythm of blood pressure and heart rate in ambulatory patients. 非卧床病人血压和心率昼夜节律的评估。
Biotelemetry and patient monitoring Pub Date : 1981-01-01
A Hauff, G Schultze
{"title":"Assessment of circadian rhythm of blood pressure and heart rate in ambulatory patients.","authors":"A Hauff,&nbsp;G Schultze","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Blood pressure recorded telemetrically over 24 h revealed a distinct circadian rhythm, in good accordance with the results of other investigators, measuring intra-arterially, but show much higher amplitudes and earlier acrophases as obtained by indirect blood pressure measurements. Telemetry which allowed measurements when subjects were sleeping proved to be an appropriate tool for the assessment of circadian rhythms of blood pressure and heart rate.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"8 1-2","pages":"106-12"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18310197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of treatment on circadian rhythms of blood pressure. 治疗对血压昼夜节律的影响。
Biotelemetry and patient monitoring Pub Date : 1981-01-01
E B Raftery, M W Millar-Craig, S Mann, V Balasubramanian
{"title":"Effects of treatment on circadian rhythms of blood pressure.","authors":"E B Raftery,&nbsp;M W Millar-Craig,&nbsp;S Mann,&nbsp;V Balasubramanian","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Clinical trials of beta-blocking drugs in hypertensive subjects have shown that these drugs do not affect blood pressure significantly at night or during the early morning. Labetalol, which is a combined alpha- and beta-blocking agent, reduces mean blood pressure levels at all times. These studies strongly support the hypothesis of a circadian rhythm of alpha-receptor-mediated-sympathetic activity.</p>","PeriodicalId":75603,"journal":{"name":"Biotelemetry and patient monitoring","volume":"8 1-2","pages":"113-20"},"PeriodicalIF":0.0,"publicationDate":"1981-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18310198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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