Anatomy Sector, Department of Basic science, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
Department of Surgery and Radiology, Faculty of Veterinary medicine, University of Tehran, Tehran, Iran.
Vet Med Sci. 2024 Sep;10(5):e1563. doi: 10.1002/vms3.1563.
One of the special anatomical structures in sturgeons is the pericardioperitoneal canal (PPC), which has not been studied much. Considering that the presence and absence of this channel and its morphometry have not been investigated in this type of fish, this study was conducted.
The purpose of present study was to obtain a complete understanding about anatomical features and ultrasonography of PPC in the heart of immature beluga species in order to provide standard approaches for performing sonography and echocardiography on this sturgeon species.
Ten immature belugas (Huso huso) were used to perform ultrasonography with Sonosite MicroMaxx ultrasonography machine of ventral approach between two pectoral fins. After performing the steps of ultrasonographic study, gross anatomical studies were also performed, and the morphometric measurement of the canal was also performed.
A small PPC was observed, which communicated between the pericardial cavity, and the peritoneal (coelomic) cavity. The cranial part of this channel, which was located immediately after the transverse septum, was on the midline of the body and was seen in midsagittal ultrasonograms. On average, the length of this canal was 3.23 ± 0.05 cm, and its diameter (cranial part) was 0.24 ± 0.04 cm.
In the present study on immature beluga, it was observed that the canal is located behind the sinus venosus and is caudoventral to it, though behind the transverse septum. It has been mentioned that this PPC establishes a connection between the pericardial cavity and the peritoneal cavity, so this connection is between the peritoneal cavity and the space between the two layers of the pericardium and has no connection with the pericardial sac (the space where the heart is located). In this study, the anatomical structure and morphometry of the PPC in immature beluga were investigated, and some approaches were presented to observe the canal in ultrasonography.
鲟鱼的一个特殊解剖结构是心包腹膜管（PPC），但对其研究甚少。考虑到这种鱼类尚未研究过该通道的存在与否及其形态测量，因此进行了本研究。
本研究的目的是全面了解未成年白鲸心脏中心包腹膜管的解剖结构和超声表现，为该鲟鱼种进行超声检查和超声心动图检查提供标准方法。
使用 Sonosite MicroMaxx 超声机通过腹侧途径在两个胸鳍之间对 10 只未成年白鲸（Huso huso）进行超声检查。在进行超声研究步骤后，还进行了大体解剖学研究，并对该通道进行了形态测量。
观察到一个小的 PPC，它在心包腔和腹膜腔（体腔）之间沟通。该通道的颅部分，位于横隔之后，位于身体的中线上，在正中矢状超声图像中可见。该通道的平均长度为 3.23±0.05cm，其直径（颅部分）为 0.24±0.04cm。
在本研究中，观察到在未成年白鲸中，该通道位于窦房结后面，并且在其尾侧下方。已经提到，PPC 在心包腔和腹膜腔之间建立了连接，因此该连接是在腹膜腔和心包的两层之间，与心包囊（心脏所在的空间）没有连接。在本研究中，研究了未成年白鲸的 PPC 的解剖结构和形态测量，并提出了一些方法来观察超声中的通道。
