[Motility of the colon: electric and manometric description of the mass movement].
"Mass movement" was described at the beginning of the century by radiologists, who occasionally observed during exploration a sudden transport of barium from one section of the colon to another. In this paper we focused our attention on the electromechanical factors that accompany evacuation through a colostomy, since we thought that these would be the myoelectrical and pressure translation of the "mass phenomenon" described by radiologists. We used an electromyographic recording probe to which a conventional microtransducer probe was affixed by suction. Using this method we made 24-hour recordings in 8 patients with sigmoid colostomy. We observed five large evacuations. When the electrical and pressure phenomena that occurred a few minutes before evacuation were analyzed, two clearly differentiated phases were apparent. The first, which we called the "previous phenomenon", consisted of a succession of contractions and spike potentials over a mean period of 5.6 min. (sigma = 2.22), after which a "large contraction" appeared, with a mean pressure value of 127 mmHg (sigma = 38.77) and a mean electrical value of 10.6 mv. The mean duration of this phenomenon was 24.93 sec (sigma = 6.19) and it was recorded almost synchronically in the three recording points studied. Undoubtedly, these electrical-pressure phenomena resulted from mass transport since in all 5 cases a large discharge through the colostomy was seen.
García Olmo
D
D
Servicio de Cirugía General, Hospital Virgen de la Arrixaca, Murcia.
Hita Villaplana
G
G
Mompeán Morales
B
B
Hernández López
A
A
Pelliçer Franco
E
E
Morales Cuenca
G
G
Parrilla Paricio
P
P
D003106:Colon / Q000502:physiology*; D003125:Colostomy; D004576:Electromyography; D005769:Gastrointestinal Motility; D006801:Humans; D008365:Manometry; D010528:Peristalsis; D011312:Pressure
Motilidad del colon: descripción eléctrica y manométrica del movimiento de masa.