《脉经》云∶怀妊六七月，脉实大牢强弦紧者生，沉细者死。脉匀细生易产，大浮缓气
散难
产。《脉诀》云∶欲产之妇脉离经，沉细而滑也同云。夜半觉痛应分诞，来朝日午定知生。
身重体热寒又频，舌下之脉黑复青。反舌上冷子当死，腹中须遣母归冥。面赤舌青细寻看，
母
活子死定应难。唇口俱青沫又出，子母俱死总教KT 。面青舌赤沫出频，母死子活定知真。
《大全》云∶饮食过度，触风冷，阴阳不和，清浊相干，谓之霍乱。其间或先吐，或腹
痛吐
利，是因于热也。若头痛体疼发热，是挟风邪也。若风折皮肤，则气不宣通，而风热上冲为
头痛。若风入肠胃则泄利呕吐，甚则手足逆冷，此阳气暴竭，谓之四逆。妊娠患之，多致伤
胎也。万密斋曰∶霍乱者，阳明胃经之病名也。盖因平日五味肥酿，腐积成痰，七情郁结，
气
盛为火，停蓄胃中，乍因寒热之感，邪正交争，阴阳相混，故令心腹绞痛，吐利并作，挥霍
变乱，故名霍乱。如邪在上脘，则当心而痛，其吐多。邪在下脘，则当脐而痛，其利多。邪
在中脘，则当腹而痛，吐利俱多。吐多则伤气，利多则伤血，血气受伤不能护养其胎，况邪
气鼓击胎元，母寿未有不殒者矣。此危恶之症，不可不亟治也，宜香苏散加藿香主之。
《脉经》说：怀孕六七月时，如果脉象实大、牢强、弦紧，说明母体正气充足，胎儿可生；若脉象沉细，则预后不良，可能导致死亡。脉象匀细柔和的，生产顺利容易分娩；脉象大浮而缓散的，气机涣散，难产。
《脉诀》说：临产的妇女，脉象会偏离常度（离经之脉），表现为沉细而滑。半夜开始腹痛，预计天亮时分就会分娩。如果身体沉重、发热且频繁发冷，舌下静脉呈现黑色兼青色，这是凶兆。如果舌头卷缩上冷，胎儿将会死亡；腹部疼痛剧烈，母亲也将面临死亡的危险。面色赤红而舌色青紫，仔细诊察可知，母亲存活而胎儿死亡的几率极小。如果嘴唇和口唇都发青，且流出泡沫，母子双亡的可能性极大。如果面色青紫而舌色赤红，且频繁流出泡沫，则是母亲死亡而胎儿存活的明确征象。
《妇人大全良方》说：饮食过量，又受风冷侵袭，导致阴阳失调，清气与浊气相互干扰，这就称为霍乱。其中有的先出现呕吐，有的腹痛并伴有吐泻，这是由于热邪所致。如果伴有头痛、身体疼痛、发热，这是兼夹风邪。如果风寒束缚皮肤，导致气机不能宣通，风热上冲头部引起头痛。如果风邪侵入肠胃，则会导致泄泻和呕吐，严重时手足逆冷，这是阳气突然衰竭的表现，称为“四逆”证。孕妇患此病，大多会损伤胎儿。
万密斋说：霍乱是足阳明胃经的疾病名称。大概是因为平时饮食五味肥甘厚味，腐败积聚形成痰湿，加上七情郁结，气盛化火，停滞蓄积在胃中，忽然受到寒热外感的诱发，邪气与正气交争，阴阳混乱，所以导致心腹绞痛，呕吐和腹泻同时发作，挥霍变乱，因此命名为霍乱。如果邪气在上脘，则心窝部疼痛，呕吐症状为主；邪气在下脘，则肚脐周围疼痛，腹泻症状为主；邪气在中脘，则腹部疼痛，呕吐和腹泻都很严重。呕吐过多会耗伤气，腹泻过多会耗伤血，气血受伤后无法护养胎儿，再加上邪气冲击胎元，母亲的生命很难保全。这是危急恶毒的病证，不可不紧急治疗，适宜用香苏散加藿香来主治。
The *Mai Jing* (Pulse Classic) states: During the sixth or seventh month of pregnancy, if the pulse is solid and large (*Shi Da*), firm and strong (*Lao Qiang*), wiry and tight (*Xian Jin*), it indicates vitality and the fetus will survive; if the pulse is deep and fine (*Chen Xi*), it indicates death. A uniform and fine pulse suggests easy delivery; a large, floating, and slow pulse with scattered qi indicates difficult delivery.
The *Mai Jue* (Pulse Rhymes) states: For women in labor, the pulse deviates from the normal pattern (*Li Jing*), appearing deep, fine, and slippery. Pain felt at midnight predicts birth by noon the next day. If the body feels heavy, there is fever, and frequent chills occur, along with blackish-green sublingual veins, these are ominous signs. If the tongue becomes cold and curled up, the fetus will die; severe abdominal pain portends the mother's demise. If the face is red but the tongue is cyanotic, careful examination reveals that while the mother may survive, the fetus likely will not. If both lips and mouth turn cyanotic and froth is expelled, both mother and fetus are likely to die. If the face is cyanotic but the tongue is red, with frequent frothing, it definitively indicates maternal death with fetal survival.
The *Da Quan* (Great Compendium) states: Overeating combined with exposure to wind and cold causes disharmony between yin and yang, leading to the interference of clear and turbid qi, a condition termed Huoluan (Cholera-like disorder). Some cases present with vomiting first, or abdominal pain with vomiting and diarrhea, indicating heat pathogenesis. If accompanied by headache, body ache, and fever, it involves wind pathogens. If wind-cold constricts the skin, qi fails to circulate freely, and wind-heat rushes upward causing headache. If wind enters the stomach and intestines, it causes diarrhea and vomiting; in severe cases, cold extremities appear due to sudden exhaustion of yang qi, known as "Si Ni" (Four Coldness). In pregnant women, this condition often damages the fetus.
Wan Mizhai stated: Huoluan is a disease name of the Foot-Yangming Stomach Meridian. It arises because daily consumption of rich flavors and fatty foods leads to rotting accumulation and phlegm formation, compounded by emotional stagnation transforming qi into fire, which stagnates in the stomach. Suddenly triggered by external cold or heat, evil and righteous qi contend, and yin and yang mix chaotically, causing severe colic in the heart and abdomen, simultaneous vomiting and diarrhea, and chaotic disruption, hence named Huoluan. If the pathogen is in the Upper Wan, pain centers on the epigastrium with predominant vomiting; if in the Lower Wan, pain centers on the umbilicus with predominant diarrhea; if in the Middle Wan, abdominal pain occurs with both severe vomiting and diarrhea. Excessive vomiting injures qi, excessive diarrhea injures blood. Once qi and blood are injured, they cannot nourish the fetus. Furthermore, the pathogenic factor agitates the fetal origin, making it unlikely for the mother to survive. This is a critical and malignant syndrome requiring urgent treatment, preferably managed with Xiangsu San (Fragrant Perilla Powder) added with Huoxiang (Agastache Herba).