A portable infrared photoplethysmograph: heartbeat of Mytilus galloprovincialis analyzed by MRI and application to Bathymodiolus septemdierum.
A portable infrared photoplethysmograph: heartbeat of Mytilus galloprovincialis analyzed by MRI and application to Bathymodiolus septemdierum.
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一种便携式红外光摄影：MRI分析的Mytilus Galloprovincialis的心跳，并应用于shitymodiolus septemdierum。
DOI：
10.1242/bio.020909
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发表时间：
2016-11-15
期刊：
影响因子：
2.4
通讯作者：
Seo Y
中科院分区：
文献类型：
--
作者：
Seo E;Sazi T;Togawa M;Nagata O;Murakami M;Kojima S;Seo Y
同时进行红外光体积图(IR-PPG)和核磁共振成像(MRI)。心率随温度、空气暴露和低氧的变化而变化。在有氧条件下，20℃常可观察到较高的心率(35~20次/分)，典型的IR-−表现为单峰(峰v)。V峰的上斜率和下斜率分别对应于脑室的充盈和收缩。在不同条件下，在较宽的心率范围内(5~35次/−)观察到IR-Ppg的双峰现象。第一个峰v对应于脑室充盈，第二个峰(v‘)的起始点随心率变化。具有噪声水平的平坦IR-PPG代表心脏骤停。尽管贝壳和足部的大幅运动会导致IR-PPG的慢波或基线漂移，但心率可以从v-v间期计算出来。在此基础上，我们组装了一套便携式红外脉搏图记录系统，并在一艘考察船上对采集的深海样本进行了24 h的心跳测量，表明红外脉搏图是一种非侵入性的、经济的、健壮的方法，可用于现场实验。摘要：对Mytilus心脏的红外光体积图进行了磁共振成像分析。便携式光电容积仪为现场实验监测贻贝的心跳提供了一种非侵入性、经济和健壮的方法。
Infrared photoplethysmogram (IR-PPG) and magnetic resonance image (MRI) of the Mytilus galloprovincialis heart were obtained simultaneously. Heart rate was varied by changing temperature, aerial exposure and hypoxia. Higher heart rates (35-20 beat min−1) were usually observed at 20°C under the aerobic condition, and typical IR-PPG represented a single peak (peak v). The upward and downward slopes of the peak v corresponded to the filling and contracting of the ventricle, respectively. A double-peak IR-PPG was observed in a wide range of heart rates (5 to 35 beats min−1) under various conditions. The initial peak v corresponded to the filling of the ventricle, and the origin of the second peak (v’) varied with the heart rate. A flat IR-PPG with a noise-level represented cardiac arrest. Although large movement of the shells and the foot caused slow waves or a baseline drift of the IR-PPG, the heart rate can be calculated from the v-v interval. Based on these results, we assembled a portable IR-PPG recording system, and measured the heartbeats of Bathymodiolus septemdierum (Mytilidae) for 24 h on a research vessel just after sampling from the deep sea, showing that IR-PPG is a noninvasive, economical, robust method that can be used in field experiments. Summary: Infrared photoplethysmogram of Mytilus heart was analyzed by magnetic resonance imaging. Portable photoplethysmographs provide a noninvasive, economical and robust method to monitor the heartbeat of mussels in field experiments.
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DOI：
10.1016/0300-9629(71)90122-8
发表时间：
1971-01-01
期刊：
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY
影响因子：
--
作者：
TRUEMAN, ER;LOWE, GA
通讯作者：
LOWE, GA
DOI：
10.1016/0300-9629(90)90664-e
发表时间：
1990-01-01
影响因子：
2.3
作者：
DEPLEDGE, MH;ANDERSEN, BB
通讯作者：
ANDERSEN, BB
影响因子：
3
作者：
Bakhmet, Igor N.;Fokina, Natalia N.;Nemova, Nina N.
通讯作者：
Nemova, Nina N.
DOI：
10.1016/0022-0981(71)90011-6
发表时间：
1971-01-01
影响因子：
2
作者：
COLEMAN N;TRUEMAN E R
通讯作者：
TRUEMAN E R
影响因子：
--
作者：
Sara, G.;de Pirro, M.
通讯作者：
de Pirro, M.