3 sentences

1. 我姐姐说我有心脏痉挛。

   wǒ jiě​jie shuō wǒ yǒu xīn​zàng jìng​luán.

   My sister says I have heart spasms.

   Source: OpenSubtitles

2. 医生给病人注射了阿托品来缓解痉挛。

   yī​shēng gěi bìng​rén zhù​shè le ā​tuō​pǐn lái huǎn​jiě jìng​luán.

   The doctor injected the patient with atropine to relieve spasms.

   Source: Dong Chinese Dictionary

3. 游泳前不做热身运动容易导致小腿痉挛。

   yóu​yǒng qián bù zuò rè​shēn yùn​dòng róng​yì dǎo​zhì xiǎo​tuǐ jìng​luán.

   Failing to warm up before swimming can easily lead to calf cramps.

   Source: Dong Chinese Dictionary